DATA TRANSMISSION NETWORK CORP
10-K, 2000-03-15
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 10-K

(X)      ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934

                  For the Fiscal Year Ended December 31, 1999.

                                       OR

(  )     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934

                         Commission file number 0-15405.

                      DATA TRANSMISSION NETWORK CORPORATION
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

                               Delaware 47-0669375
              ----------------------------------------------------
              (State of Incorporation) (I.R.S. Employer ID Number)

9110 West Dodge Road, Suite 200, Omaha, Nebraska                       68114
- ------------------------------------------------                     ----------
    (Address of principal executive office)                          (Zip Code)


       Registrant's telephone number, including area code: (402) 390-2328

        Securities Registered Pursuant to Section 12(b) of the Act: None

           Securities Registered Pursuant to Section 12(g) of the Act:

                          Common Stock, $.001 Par Value
                          -----------------------------
                                (Title of Class)

         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during the  preceding  12 months and (2) has been  subject to such  filing
requirements for the past 90 days. Yes X        No

         Indicate by check mark if disclosure of delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K [ ].

         The aggregate  market value of voting stock (based upon the "bid" price
as quoted on NASDAQ) of the registrant held by  non-affiliates  on March 1, 2000
was approximately $300,500,000.

         At March 1, 2000, the registrant had outstanding  12,019,986  shares of
its common stock.

                       DOCUMENTS INCORPORATED BY REFERENCE

1.       Portions of the  Registrant's  Annual  Report to  Shareholders  for the
         fiscal year ended December 31, 1999 are  incorporated by reference into
         Parts I, II, and IV.

2.       Portions of the  Registrant's  definitive Proxy Statement filed for the
         Registrant's  Annual Meeting of Shareholders to be held April 26, 2000,
         are incorporated by reference into Part III.


<PAGE>


                                     PART I

ITEM 1.  BUSINESS.

         (a)        General Development of Business:

         Data  Transmission  Network  Corporation  (the  "Company",  "DTN")  was
incorporated on September 17, 1987 to change the name and state of incorporation
of its predecessor company, Dataline, Inc. from Nebraska to Delaware pursuant to
an  Agreement  and Plan of  Merger  dated  October  8,  1987.  The  Company  was
originally  incorporated  in Nebraska on April 9, 1984,  as Scoular  Information
Services,  Inc., a subsidiary of a regional  grain  company,  later changing its
name to Dataline, Inc.

         On December  19, 1985 and January 31,  1986,  in related  transactions,
certain  employees of the Company  purchased all of the outstanding stock of the
company from the regional grain company.

         In January 1987, the Company  completed an initial  public  offering of
common stock selling 698,085 shares at $5.40 per share (pre-stock split).

         On March 3, 2000, the Company entered into a definitive  agreement with
Veronis, Suhler & Associates  Communications Partners III, LP (VS&A III) whereby
VS&A III will  make a tender  offer to all of the  Company's  shareholders  at a
price of $29.00 per share. The tender offer is subject to the tender of at least
90% of the outstanding  shares as of March 1, 2000. Holders of over 50.1 percent
of the Company's  outstanding  shares have agreed to accept the tender offer and
vote to  approve  the  merger.  If less than 90% of the  outstanding  shares are
tendered,  the Company  will merge with an affiliate of VS&A III at the same per
share price. Closing of the transaction is subject to government and shareholder
approvals and other  customary  conditions,  and is expected to occur during the
second quarter of 2000.

         (b)       Financial Information About Industry Segments:

                   Financial information about industry segments for the Company
                   is  on  page  56 of  the  Company's  1999  Annual  Report  to
                   Shareholders and is incorporated herein by reference.

         (c)        Narrative Description of Business:

         Data  Transmission   Network   Corporation  (DTN,  the  Company)  began
operations in April 1984 and continues to provide comprehensive,  time-sensitive
information and communication services primarily for the agricultural,  weather,
financial and energy industries.  DTN grew to 166,900 subscribers throughout the
U.S.  and Canada at the end of 1999. A review of these  industries  and services
with the year's highlights are discussed in this report.

         The  Company's  subscription  services are  targeted at niche  business
markets and designed to be timely,  simple to use and convenient.  The Company's
distribution  technology  provides  an  efficient  means  of  sending  data  and
information  from point to  multi-point.  The  development  and  enhancement  of
cost-effective   distribution  methods  including  the  Internet  and  satellite
delivery,  plus a total commitment to customer  service and information  quality
has enabled the Company to become a major player in the communications industry.

         The Company  continues to take  advantage of  engineering  and software
advancements  for  developing  and  improving  distribution  in an exciting  and
growing  industry.  In 1999,  DTN made great  strides in the area of  e-commerce
which will also be discussed in detail in this report.

                                       2
<PAGE>

Information Distribution Technologies

         DTN supports several information distribution technologies allowing the
distribution,  reception and display of  information.  The primary  technologies
used are small dish Ku-band satellite (Ku) and the Internet.  Other technologies
used are Cable TV (VBI),  e-mail,  FAX, direct leased line circuits and wireless
technology.

         The Company provides the equipment necessary for subscribers to receive
certain services using Ku, FM or VBI technologies. This equipment includes a DTN
receiver,  a video monitor,  FM antenna or a small 30" Ku-band satellite dish. A
keyboard,  mouse and printer may be provided  depending on the  service.  DTN is
responsible for the normal maintenance and repair of subscriber  equipment.  DTN
Internet  subscribers  use their own  personal or business  computers to receive
information and e-commerce services.

         In 1992,  the Company  introduced  the Advanced  Communications  Engine
(ACE)  receiver,  a color graphics  receiver  system.  This system  expanded the
Company's  ability to  provide  information  and  communication  services  using
satellite technology.

         The ACE receiver contains multiple processors. One is dedicated to data
communications  and  storage.  The second  processor is for  manipulating  data,
interacting  with  the  user  and  displaying  high-resolution  color  pictures,
graphics  and text. A third  processor  enables the unit to play audio clips for
weather forecasts,  voice  advertisements or audio alarms set for when a futures
contract or stock price reaches a pre-set price. In addition, this processor can
send and retrieve  information by using an internal  modem  connected to a phone
line. Additional processors may be present, as necessary, based on the method of
information distribution technology used, such as satellite, VBI, etc.

         The  ACE  receiver  can  also  download  information  to a  printer  or
computer.  This  receiver  is  equipped  with an  internal  hard drive  allowing
processed  information  to be stored,  archived and  displayed.  The  receiver's
built-in  control panel,  keyboard or mouse allows  subscribers to  conveniently
view this information.

         One of the unique  aspects of the  Company's  information  distribution
technology  is the computer  software  developed by the Company for use with the
broadcast  system that feeds data to the ACE  receivers.  This software  manages
information from a wide array of input sources,  runs routines,  sets priorities
and then  initiates  transmission  to the satellite.  The software  provides the
capability to individually  address each receiver unit placed with a subscriber.
This  permits  the  Company  to  transmit  specific  information  to a  specific
subscriber or group of subscribers.

         DTN began  offering  services via the Internet in 1995 and now provides
Internet services for the four main divisions - agriculture,  weather, financial
and energy.  In 1998,  the Company  expanded its Internet  initiatives  into the
e-commerce  arena,  adding online  trading  capabilities  to real-time  Internet
financial  service products.  In 1999, the Company began new initiatives  within
the cash grain and  livestock  commodities  and futures  business as well as for
perishable products such as meat, produce and floral. The Company also announced
its interactive, advertising based weather site (WX.COM) in 1999. These and more
will be discussed later in this report.

         In 1998, the Company began delivering  services to customers via direct
leased line  circuits.  This gives  customers  in major  metropolitan  areas the
ability to receive the Company's  information  where options,  such as satellite
dishes, are impractical. In many instances, this technology provides a redundant
delivery method to insure maximum availability of the Company's information.

         The following is a summary of subscribers  by information  distribution
technology at December 31, 1999.

Information Distribution Technologies                         Subscribers
- -------------------------------------------------------------------------
Ku-Band Satellite                                               142,600
Internet                                                         19,000
Leased Lines                                                      1,600
VBI                                                                 800
FM Radio Side Band                                                2,900
                                                             ----------
Total                                                           166,900

                                       3

<PAGE>

         The Company has approximately  15,000 customers  receiving  information
using Fax  technology.  The e-mail business is primarily a subscriber (an e-mail
source)  communicating  specific  messages to a group of subscribers.  There are
over 1,200  e-mail  sources  delivering  over  35,000  pages of  information  to
subscribers daily.

Service and Equipment Revenue

         The Company's  revenue is derived  primarily from six  categories:  (1)
monthly,  quarterly or annual subscriptions,  (2) equipment sales (3) additional
(optional) services, (4) communication services, (5) advertising and (6) service
initiation fees. The percentage of total revenue for each category over the last
three fiscal years was:

                                    1999             1998               1997
- ----------------------------------------------------------------------------
Subscriptions                        80 %            80 %               80 %
Equipment Sales                       4 %             3 %                -
Additional Services                   5 %             5 %                5 %
Communication Services                8 %             7 %                8 %
Advertising                           2 %             3 %                3 %
Service initiation fees               1 %             2 %                4 %

(1)  Subscription  revenue is generated  from monthly,  quarterly or annual fees
     for one of the  Company's  services.  The  Company  offers  a  discount  to
     subscribers who pre-pay their subscription annually. A more detailed review
     of each service is found later in this report.

(2)  A unit of DTN  Kavouras  Weather  Services  generated  equipment  sales  of
     weather  systems,  workstations  and weather  radar  systems as well as the
     manufacturing  of small  and  large  Doppler  radar  systems.  The  Company
     announced the sale of their radar business to Radtec  Engineering,  Inc. in
     December 1999.

(3)  Additional  services are offered to  subscribers  on an "a la carte" basis,
     similar to premium channels on cable TV. A third party provides information
     for these services with DTN receiving a share of the  subscription  revenue
     paid by the subscriber.  Additional  services revenue  continues to grow in
     total dollars at a rate commensurate with the overall growth of the Company
     due, in part, to new technological innovations using the Internet.

(4)  The  Company   sells   communication   services   allowing   companies   to
     cost-effectively  communicate a large amount of timely information to their
     customers or field offices.  This category  includes revenue generated from
     FAX and e-mail services.  Communications revenue continued to grow in total
     dollars and management  believes this area offers  opportunities for future
     growth.

(5)  Advertising  space is sold and  interspersed  among  the  pages of news and
     information,  similar to a  newspaper  or  magazine.  The  advantage  of an
     electronic  advertisement over typical print media is the ability to change
     or replace the  advertising  message  quickly and as  frequently  as market
     conditions dictate.  Advertising revenue was down slightly due primarily to
     the weak ag  economy.  This  was  somewhat  offset  due to  subscriber  and
     subscription  revenue  growth as well as the addition of new services  with
     available advertising space.

(6)  Service   initiation  fees  are  one-time  charges  for  new  subscriptions
     depending on the service and the information distribution  technology.  DTN
     also charges an initiation fee for those subscribers who convert to another
     service (i.e., from a monochrome FM to a Ku color service).

Agricultural Services

                                    1999             1998              1997
                                    ----             ----              ----

Revenues (in millions)              $85.1            $88.3             $87.6
Subscribers at year-end             109,300          113,800           120,500


                                       4
<PAGE>

         The DTN Agricultural  Division consists of five major services:  DTN Ag
Services,  DTNstant,  DTN Fresh (an expansion of DTN  PROduce),  DTNiron and DTN
Cotton Network.  DTN Ag Services,  DTNstant and DTNiron serve DTN's  traditional
agricultural  marketplace,   consisting  of  grain  and  livestock  farmers  and
agribusinesses with interests in the commodity  distribution chain. DTN Fresh is
in the fresh produce and perishable vertical market with initiatives in meat and
floral. DTN Cotton Network serves cotton gins, warehouses and merchants. Because
of the diversity of these  markets,  the ag sales force has been  specialized to
best serve prospects and customers in each area.

         Approximately 80% of DTN ag subscribers are grain farmers and livestock
producers,   with  the  balance   consisting   primarily  of  grain   elevators,
agri-businesses and financial institutions.  Subscribers to DTN Ag Services farm
nearly one third of the nation's  total cropland and market more than 50% of the
nation's cattle and hogs.

         The Internet has altered access to information for ag producers.  DTN's
focus on additional of proprietary content and analysis from a dedicated team of
ag journalists  continues to set DTN apart from "free" services.  Entry into the
e-commerce  arena,  which will be discussed in detail later in this report,  has
opened new doors of opportunity for the company's ag division.

         The main competition to the  agricultural  services is a combination of
printed  advisory  services,  radio,  television,   telephone,  other  satellite
information  services,   free  and  subscription  Internet  services,   and  old
information-gathering habits.

         There  are  over  200  premium   services   available  to  agricultural
subscribers to enhance their  subscription.  These services consist of advisory,
informational and educational products as well as newswire, association and free
add-on services.  Premium services compliment core services and add value to the
subscribers  who use them.  They are  marketed  to current  subscribers  through
telemarketing,  system wide and individual free trials, direct mail, billing and
equipment inserts as well as on screen advertising. Prices range from $2 to $400
per month.

         Communication  services  play an  important  role in  providing  a cost
effective  means  to reach a large  number  of  targeted  customers  daily.  DTN
InfoMail  provides  information  for  elevators,  seed sales reps,  agronomists,
chemical  sales  reps and  technical  advisors,  commodity  brokers,  processing
plants,  auction sale barns,  feedlots and anyone with a need to  communicate to
DTN subscribers. Over 40 new InfoMail providers began messaging in 1999.

         Advertising on DTN Ag Services is another  revenue-generator for the ag
division. The "always on" interactivity, animation and scheduling flexibility of
the DTN systems are very appealing to  agri-businesses  such as seed  companies,
equipment dealers,  and ag chemical and finance businesses.  Advertising revenue
in 1999 topped $2.8 million.

E-Commerce Initiatives

         DTN's Ag  Division  is  poised  to  leverage  its  critical  mass of ag
customers by providing  easy and  affordable  access to Internet  services  with
numerous e-commerce initiatives.

         The DTN Cotton  Network is involved in the  electronic  trade of cotton
for over two years and is a  combination  of DTN's  proprietary  network and the
Internet.

         DTN Fresh  introduced DTN Tradelink,  which is involved with electronic
data interchange  (EDI) in the produce and perishables  industry.  DTN Tradelink
software is used for price discovery and trading.

         In the fourth  quarter of 1999,  an  alliance  with  Ag1.com  created a
program  to provide  inputs,  financing,  marketing  advice  and  insurance  for
producers. This program has been well received in its early stages.

         DTNstant  expanded  its  capabilities  to include  cash  grain  trading
between its customers. The Tradelink software allows  producer-to-elevator grain
trading and will be sold along with InfoMail services.

                                       5
<PAGE>

         In addition,  DTN Ag Services  has  negotiated  an  agreement  with two
brokerage  firms  to  allow  electronic   commodity  futures  order  entry.  The
elevator-to-elevator   transactions   as   well   as  the   producer-to-elevator
transactions can be executed using DTN ACE receivers or the Internet.

         In December 1999, DTN and Photon Research Associates, Inc. (PRA) formed
a  joint-venture  company,  EarthScan  Network,  Inc.  Earthscan  Network is the
culmination  of a three  year  relationship  bringing  the  latest in  satellite
imaging and Internet technology to give the agricultural industry  unprecedented
capability to manage risk and maximize return.

DTN AgDayta

         DTN  Ag  Services'   leading  edge   Internet   service,   DTN  AgDayta
(www.agdayta.com), incorporates editorial content specifically for AgDayta along
with proprietary  content  developed for satellite  services.  Internet delivery
allows additional  functionality and supports  interactivity.  A newly developed
charting  package can be  downloaded  to the user's  personal  computer,  giving
impressive  charting  abilities  for both  futures  and  equities.  An  enhanced
Kavouras weather package offers real-time weather updates.  The result is DTN Ag
Services' most content rich agricultural service.

         DTN  AgDayta  serves  as  the  foundation  of Ag  Services'  e-commerce
initiatives on the Internet. Ag1.com has been integrated with AgDayta to provide
producers with inputs,  financing,  marketing plans, and crop insurance.  Online
cash and futures trading will be available on the AgDayta site. DTN AgDayta will
provide the customer with easy access to virtually every tool needed  throughout
the ag production and marketing cycle.

DTN AgDaily/FarmDayta Satellite Services

         DTN AgDaily is the Company's  flagship service.  Managed on an Advanced
Communications  Engine (ACE)  satellite  receiver,  subscribers  receive delayed
commodity  futures and options  quotes,  charts,  local cash grain and livestock
prices,  selected national,  regional and world weather updates and a variety of
daily analysis, commentary and news affecting grain and livestock prices.

         DTN Pro Series is an advanced version of DTN AgDaily.  Functionality is
enhanced with a high interest  window to view futures  quotes and options on any
page, keyword search,  customization of up to five pages of selected information
and a personal library serving as an archive segment. Packages of weather, news,
charts,  intraday commodity charting or stocks can be added to the core service.
DTN  Commodity  Pro,  Premier  and  Premier  Plus  combine  two or more of these
packages for a more extensive, customized service.

         DTN FarmDayta II offers similar  information using the unique FarmDayta
receiver for its delivery method.

         FarmDayta One service was introduced to fill a special  customer niche.
Content was  developed  to provide a lower price  point for the  first-time  DTN
customer.  This is the most economical color satellite option available from DTN
Ag Services.

         FarmDayta  Elite  and  Elite  Plus  include  all the DTN  FarmDayta  II
features  and  content  with  added  news,  quotes,   weather   information  and
functionality.

DTNstant

         DTNstant is a leader in  providing  delivery of  real-time  futures and
options quotes from the major  commodity  exchanges and headline  commodity news
from multiple sources such as the Associated Press, Reuters,  Futures World News
and Bridge.  The service also provides  market-leading  cash grain and livestock
information,  in-depth charting  capabilities plus all the information available
on the DTN AgDaily color service.

         In addition,  the service provides information for the energy,  metals,
softs (i.e., orange juice, coffee, cocoa), transportation and lumber industries.
DTNstant uses compatible  software to allow the "pass thru" of data and graphics
into an individual's  personal computer or a company's local area network (LAN).

                                       6
<PAGE>

With this  capability,  a DTN ACE  receiver  can feed  information  to  multiple
users/traders  on the LAN. This "pass thru" software has opened many new markets
by  utilizing  information  distribution  within  a  customer's  LAN,  enhancing
analytical capabilities and the manipulation of DTN data in a "PC" environment.

         DTNstant  operates in a very competitive  market with many providers of
instant commodity quotes. The primary subscribers are commercial grain companies
and elevators,  feedlots,  commodity brokers and commodity speculators. No other
product  in the  industry  offers  a more  comprehensive  news  and  information
service.  Due to the  nature of this  industry,  the  Company  provides  on-site
service and installation by professional service technicians.

DTN Fresh (an expansion of DTN PROduce)

         DTN  Fresh   provides   comprehensive   weather,   pricing,   news  and
transportation   information,   as  well  as  e-commerce  and  electronic   data
interchange  (EDI)  solutions  for those  involved  in the buying and selling of
perishable commodities.

         DTN Fresh has two business units. DTN Tradelink provides e-commerce and
EDI  solutions  for buyers  and  sellers of  perishable  commodities.  DTN Fresh
Information  Services  provides an  authoritative  source of  weather,  pricing,
market  information,  news and  transportation  information  for produce,  meat,
floral and other perishable product industries.

DTN Cotton Network

         DTN  Cotton  Network  is an  electronic  communications  system for the
cotton industry designed to operate on a user's personal computer using software
developed  specifically for cotton accounting and marketing.  DTN Cotton Network
sells gin and warehouse bale accounting/management  software and cotton merchant
software designed specifically for these specialized businesses. The combination
of the accounting and marketing  software and the  electronic  marketing  system
provides the cotton  industry with an  integrated  system for moving cotton from
farm to shipper.

         DTN Cotton  Network  serves the Western  Cotton  Belt,  which  includes
Texas,  Oklahoma, New Mexico, Arizona and California from its office in Lubbock,
Texas.  The network  serves its  Eastern  Cotton Belt  customers  in  Louisiana,
Mississippi,  Arkansas,  Tennessee,  Alabama,  Georgia, Florida, South Carolina,
North Carolina and Virginia from its Memphis, Tennessee office.

         Sellers  connect to the Cotton  Network via the Internet to upload bale
ownership information,  down-load cotton bale data and list cotton for broadcast
to prospective  buyers.  Buyers may either receive the broadcast via Internet or
DTN Ku-band satellite,  where the broadcast is passed through a serial port into
personal computers at the buyer locations.

DTNiron

         DTNiron  is  a  cost-effective  communication  resource  for  the  farm
implement,  construction,  truck and trailer dealers which provides an equipment
locator and advertising service for dealers at the wholesale and retail levels.

         A  detailed  implement  listing  remains  on the  DTNiron  system for a
minimum of 30 days,  renewable  at the  dealer's  request.  Subscribers  receive
industry news, financial  information,  economic indicators and information from
the DTN AgDaily service.

         A retail  equipment  listing is  available  on the  service's  web site
(www.DTNiron.com). This allows subscribers to gain additional exposure for their
listings at no additional charge. Internet users can easily locate equipment for
sale by using a drill-down  database  search engine  directing them to DTNiron's
complete web listing.  Dealers can also receive e-mail from potential buyers or,
if they are not e-mail enabled, DTN will call or fax the message to the dealer.

                                       7
<PAGE>



EarthScan Network, Inc.

         EarthScan  Network,   Inc.   (www.earthscan.com)   is  a  newly  formed
joint-venture  company developed through a partnership between DTN and San Diego
based Photon Research  Associates,  Inc. (PRA). This partnership  combines PRA's
expertise  in  the  acquisition,  archiving,  enhancement  and  distribution  of
remotely  sensed images with DTN, the leader in  distribution  of information to
agriculture and agribusinesses.

         EarthScan delivers the most sophisticated satellite images available to
farmers and their  suppliers at an  affordable  cost through the  Internet.  The
remote sensing  service enables the customer to identify and respond faster than
before to problems caused by insects, weather or nutrient deficiencies.  It also
provides  real-time  measurement  and  analytical  capabilities  throughout  the
growing season.

         In  addition  to  agriculture,   EarthScan  Network  sees  new  markets
developing in the future in real estate,  community planning,  mining,  fishing,
forestry and transportation industries.

Weather Services

                                    1999             1998              1997
                                    ----             ----              ----

Revenues (in millions)              $38.5            $25.8             $10.7
Subscribers at year-end             23,400           18,300            13,100


         DTN Weather Services  consists of three major  components,  DTN Weather
Center  Services,  Kavouras,  Inc. and Weather Services  Corporation  (WSC). The
combination of these three DTN companies  creates a leading provider of critical
weather information and meteorological equipment to small businesses,  military,
federal government,  broadcast television, major utilities, Internet portals and
anyone whose business is impacted by weather conditions.

         DTN Weather  Services' future plans includes  expanding its presence in
markets  that rely on DTN  services  for weather  information  by  offering  new
transmission methods, including PC-based products and the Internet. The Internet
provides many  opportunities  for growth such as  advertising  supported  sites,
monthly subscription sites, "pay-per-view" sites, etc.

         DTN Weather Services employs a dedicated weather sales force made up of
nearly 100 sales  professionals for its sales and marketing efforts.  This sales
force is unique to DTN in the  weather  industry  and is a major  reason for the
success of the division.

         Weather   conditions  impact  the  profitability  and  safety  of  many
industries,  and DTN Weather Services is dedicated to becoming the sole solution
for weather  information  needs.  Competition  includes  several  large  private
weather  companies and on a smaller  scale,  television  and the  Internet.  The
competition lacks the timeliness and current local weather  information that DTN
services provide.  DTN Weather Services constantly looks for new and better ways
to provide this critical  information  to its  customers in the  quickest,  most
dependable and cost effective way.

WX.COM

         WX.com  (www.WX.com),  a free  interactive  weather web site,  made its
debut in May of 1999.  WX.com  features TV  quality,  3-D  graphics  and weather
information  including  international  weather,  radar, storm tracking,  current
conditions,  weather  warnings,  and  more.  WX.com  differentiates  from  other
Internet  services in that it provides  viewers  with a dynamic and  interactive
experience including the ability to easily overlay full-motion weather maps with
state and county lines,  highways and other familiar  landmarks to track weather
patterns.  The  technologically  advanced  Triton(tm) RT, which was developed by
Kavouras  Weather  Services in Minneapolis as the world's first fully functional
2-D and 3-D weather graphics system,  powers WX.com. This system provides WX.com
with  state-of-the-art   weather  that  is  both  entertaining  to  viewers  and
meteorologically accurate.

                                       8
<PAGE>

DTN Weather Center

         DTN  Weather  Center  is a  comprehensive  weather  information  system
designed  to meet the  weather  information  needs of many  industries.  Markets
specifically  targeted by DTN Weather Center are golf courses,  turf management,
emergency   management,   state   transportation   departments,   public   works
departments, construction, broadcast and aviation. DTN Weather Center introduced
new products in 1999 designed especially for the aviation and golf industries.

         DTN Weather  Center  provides more than 100  full-color  maps and other
in-depth  weather  information,  from local forecasts and regional radar maps to
national infrared satellite images. The service provides short-range  (immediate
to 48-hour) forecasts, long-range (30-90 day) outlooks and 10-day city forecasts
for more than 550 major cities across the United States. A personal programmable
segment  allows users to customize  maps and the archive  feature  easily stores
maps for future reference.

         DTN Weather  Center  provides the  important  weather  information  and
planning tools to make businesses safer, more profitable and easier to manage.

DTN Aviation Center

         DTN  Aviation  Center  is  a  comprehensive  aviation  weather  package
specially  designed  for pilots,  airports  and Fixed Based  Operators  (FBO's),
supplying them with the extensive flight-plan  information found on many premier
"online"  systems.  This package  includes  U.S. and  regional  depiction  maps,
24-hour  low-level   significant  weather  prognosis,   U.S.  region  winds  and
temperatures   aloft  and  also  METAR  (the   aviation   acronym   for  airport
observations) and TAF (Terminal Aerodome Forecast) information.

         Subscribers use DTN Aviation Center during flight services to visualize
current weather  conditions while creating their flight plans. This service also
aids  in  determining  alternate  route  destinations.  A  new  premium  service
available to Aviation subscribers during 1999 was Flyte Trax, a worldwide flight
tracking system.

         Subscribers  choose  from  the  Level  I  service,   designed  for  the
local/regional  flyers up to 18,000 feet, or the Level II service,  designed for
pilots and airports  flying  nationally up to 45,000 feet.  The Level II service
also provides European flight information.

DTN FlightBrief Online

         In November 1999, DTN purchased  FlightBrief  Online Service,  Inc. The
purchase  included  two  web  sites,   www.weatherconcepts.com   which  provides
real-time  weather  graphics  to  aviation,  marine,  farming  and  construction
subscribers,  and www.flightbrief.com  which provides real-time weather graphics
and interactive flight planning,  weather briefing,  airport databases and other
resources for aviation subscribers.

         In  addition  to  the  web  sites,  DTN  received  approximately  3,300
subscribers.  This purchase allows DTN to target the more than 600,000  aircraft
owners and pilots in the United States.  These sites also offer the  opportunity
for advertisers to reach these niche markets.

DTN Broadcast Weather

         DTN  Broadcast  Weather  is a  weather  and  news  information  service
designed  for the  broadcast  industry.  Along  with  the  comprehensive  local,
regional and national  weather  forecasts and information,  subscribers  receive
National Oceanic and Atmospheric Administration Warnings & Alerts (NOAA).

         Learfield World & National News Summary  provides  hourly  summaries of
international  and national news. The segment  contains 20 pages,  formatted for
about two to three  minutes  of "rip and  read."  Announcers  can  organize  the
material, print it out or read it directly from the DTN screen.

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DTNonline

         DTNonline was added to the DTN Weather Center family of services during
1999.   It   provides   the  same   maps,   forecasts   and   warnings   as  the
satellite-delivered  DTN services,  along with NOAA Warnings and Alerts, via the
Internet.  DTNonline allows subscribers to monitor important weather information
at the  office,  on the job site or at home.  Although  subscribers  prefer  the
reliability,  speed and reception of the satellite service, DTNonline allows the
redundancy  of having a satellite  system  along with an Internet  back up. This
allows  for  continuous  access in the event of rain fade at dish  locations  or
Internet delays due to phone line outages, etc.

DTN Contractor Weather

         DTN Contractor  Weather is designed for the  construction  industry and
includes   construction-related   news  and   information.   The  service  gives
subscribers a competitive  advantage by providing  valuable weather  information
necessary for important day-to-day business decisions.

         Job site  weather  management  options  include the DTN  Weather  Alert
Paging System, which provides immediate  notification of severe weather directly
to the user's alpha pager, and DTNonline  (Weather Center's  Internet  service).
NOAA Weather Wire and Severe Weather Maps are included in DTN Contractor Weather
Level II, along with the subscriber's  choice of the Weather Alert Paging System
or DTNonline.

         The service is a practical tool in improving  employee  safety,  saving
labor and  material  costs,  and  providing  effective  scheduling  and staffing
management for the construction industry.

DTN Forestry Center

         DTN  Forestry  Center  provides  critical  forest fire  information  to
subscribers.  Previously,  district  forest  service  offices  relied on a modem
network  assembled  in the late  1960's for crucial  information  on forest fire
locations and fire weather forecasts. With DTN Forestry Center, forecast service
district  managers  quickly  access fire  weather  text  bulletins  along with a
comprehensive set of weather maps.

         Bulletins provided for the forest service are Forest Weather Forecasts,
Red Flag  Warnings,  Fire Danger  Indexes,  Fire Weather  Observations  and Fire
Weather  Notices.  A special  chapter of fire weather maps  provides  additional
information such as Haines Fire Index,  Current and Forecast Relative  Humidity,
Current and Forecast Wind Speed and Direction,  upper air analysis from 5,000 to
10,000 feet,  and moisture index  information  from both the Crop Moisture Index
and Palmer Drought Index.

DTN Marine Center

         DTN Marine Center provides  satellite-delivered weather information for
all areas of the marine industry. The service provides information necessary for
cost-effective,  efficient decision making regarding towing,  shipping,  salvage
and recreation.  It includes Lake and Marine Text Bulletins,  Buoy Reports, Lake
and Marine Maps and Tide Tables, as well as general weather  information and sea
conditions. Sea Surface Temperatures are also available as an optional service.

DTN Transportation Weather

         DTN Transportation  Weather is designed for anyone responsible for road
maintenance and conditions.  Comprehensive local,  regional and national weather
forecasts  and  information  are  available  to  transportation   professionals,
allowing them to make informed decisions regarding the weather.

         Subscribers  have the choice of the DTN Weather  Alert Paging System or
DTNonline  (DTN Weather  Center's  Internet  service).  The Weather Alert Paging
system provides immediate  notification of severe weather directly to the user's
alpha pager. DTNonline enables the subscriber to make management decisions based
on weather at home or away from the office with a PC.

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         NOAA Weather Wire and Severe  Weather  Maps,  Travel Cast Maps and Road
Conditions,  and EarthSAT Winter Weather  Information are important  features of
this product.

DTN Travel Center

         DTN Travel Center is an  interactive  hotel guest service  designed for
the  hospitality  and travel  industries.  The service targets hotels and motels
with 50+ rooms and includes NEXRAD  Real-Time Radar Maps,  travel  forecasts and
road conditions,  detailed city and national forecasts, national and world news,
sports and sports  scores.  In  addition,  the  service  provides  business  and
financial news and market quotes and indexes.

         DTN Travel Center provides a comprehensive weather and news information
package for both the business and vacation traveler.

DTN Turf Manager

         DTN Turf Manager is available to businesses and individuals involved in
turf-related operations such as golf courses, lawn maintenance,  landscaping and
sod farms. The service provides the weather and chemical  information needed for
effective  turf  management,  making  the  safest,  most  cost-effective  use of
chemicals, labor and other resources.

         Material  Safety Data Sheets  (MSDS) are  available  with Turf Manager,
along with the C&P Press Turf Product  Index,  an  information  database of more
than 275 turf pesticides. Plant Protection Chemical Product Labels were added to
the  service in 1998.  This  important  segment  provides  full  information  on
chemicals used in turf care and management.

         Thor Guard, the only lightning  prediction system  available,  warns of
lightning  strikes  before they happen and is available as an optional  service.
Evapotranspiration Tables provide regional  evapotranspiration rates to plan for
watering and chemical application.

         Golf information,  such as ESPN Sports Ticker, the National Golf Course
Directory, GCSAA News and USGA News, is provided with DTN Turf Manager.

DTN Pro Shop

         DTN Pro Shop was added to the line of Weather Center  products in 1999.
It contains the weather  information golf course  professionals need, along with
the golf and sports  information  their  customers  enjoy.  Regional radar maps,
current  weather  conditions  and city  forecasts  are  included  in the weather
segment.   Golf  and  sports  information   includes  an  interactive   handicap
calculator, an easy-to-use search and sort database of golf courses in the U.S.,
a golf  products  section and a golf news and sports  segment that  provides the
latest  updates on the major  tours and  up-to-the-minute  coverage of all major
sports.

DTN Weather Safety Center

         DTN  Weather  Safety  Center  provides  weather  information  for those
responsible  for  protecting  lives  and  property  from the  hazards  of severe
weather.  NOAA Weather  Wire,  the most  comprehensive  warning and alert system
available  today, is available with the service,  along with radar and satellite
images, local, regional and national outlooks.

         DTN  Weather  Safety  Center is  invaluable  for  emergency  management
professionals. Safety Center subscribers receive a free DTNonline connection for
remote or  emergency  access to weather  information  in  addition  to their DTN
satellite  system.  This enhanced  option assures  continuous  access to weather
information regardless of conditions that could cause reception problems.

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StormSentry PC

         A new product to DTN Weather  Center in 1999 is DTN  StormSentry  PC, a
weather  information  service designed to provide real-time,  single-site NEXRAD
access on a PC. DTN  StormSentry is the ultimate in storm  tracking  technology.
Subscribers  can access the storm tracking  system at an affordable  cost, in an
easy-to-use format. The ease of navigation and the multiple "windows" capability
allows subscribers to simultaneously monitor critical weather conditions, severe
weather,  satellite maps and lightning  conditions.  Users can zoom to the exact
location, as small as a one county area, for in-depth viewing of storm cells.

         StormSentry  takes the guesswork out of severe weather  forecasting and
allows subscribers to be proactive in responding to severe weather.

DTN Kavouras Weather Services

         DTN Kavouras  Weather Services is a total weather  solutions  resource,
providing a full spectrum of advanced  meteorological  information  products and
services  for  weather-dependent  applications  in  industries  and  governments
worldwide. The Minneapolis-based subsidiary of DTN produces real-time PC weather
workstations, comprehensive meteorological training, and a massive international
weather  database.  DTN Kavouras and its 140 employees  offer an expertise level
unmatched in the industry.

         Weather Services Corporation (WSC), based in Lexington,  Massachusetts,
is one of the  largest  sources  for  meteorological  consulting  and  worldwide
commercial  weather  information.  WSC provides  name  awareness for DTN Weather
Services through valuable contracts with high profile customers  including Metro
Networks, TVA (Tennessee Valley Authority) and numerous utilities, broadcasters,
agribusinesses and municipalities.

Triton RT

         Triton  RT is a  real-time  3-D  and  2-D  weather  and  news  graphics
animation  system  focused  on, but not  limited  to, the  broadcast  television
market.  This product uses  weather data to create an  informative  and exciting
weather show.

MetWork FileServer

         MetWork  FileServer  is a  robust  and  dynamic  network  solution  for
real-time dissemination of meteorological information based on the versatile and
efficient NT format,  supporting standard Internet  communications  protocol and
various network configurations.

Storm Pro

         Storm Pro is a workstation  that integrates  real-time  Doppler weather
radar with a geographic  information  data system to create an accurate  display
with  broadcast-quality  appearance.  The  display can be  individualized  for a
unique and defining look important in the television market.

StormWatch

         StormWatch is customizable software that monitors either a weather wire
or a DTN Kavouras MetWork Fileserver to generate color-coded maps and/or a crawl
message for important watch, warning or advisory weather situations.  StormWatch
also allows a television  station to edit and prioritize  information  for their
viewing areas.

SchoolWatch

         SchoolWatch  is  customizable  software  for the  Triton RT that  helps
television stations easily update,  prioritize and display late-start and school
closing information.  This software can also be configured to update information
on a station's web site.

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         Data and Customizable  Forecasting  Services  provides a broad range of
standard data for a variety of markets. In addition, DTN Kavouras staff provides
24-hour,  365 days a year coverage for tailor-made  forecasts to meet customers'
special needs.

Kavouras MetVision

         New in 1999,  the Kavouras  MetVision  service  represents  the highest
resolution  weather  forecast  data  in  the  broadcast   television   industry.
MetVision,  based on a proprietary  numerical weather prediction model developed
by the  Harris  Corporation,  produces  forecasts  of the  future  state  of the
atmosphere in four dimensions. The Kavouras Triton RT workstation transforms the
MetVision data into visualizations of the forecast  information for analysis and
spectacular  on-air displays.  MetVision helps a meteorologist  prepare a better
weather  forecast  and also helps to  graphically  explain  the  forecast to the
average TV viewer. MetVision is an optional Kavouras data product.

Kavouras/RT-SET WxStudio

         Also  new in  1999  is  Kavouras/RT-SET  WxStudio  which  combines  the
Kavouras TritonRT weather workstation with RT-SET's cost-effective,  entry level
Ibis(TM) Virtual Studio System. WxStudio represents the integration of these two
complementing  technologies  and offers the broadcast  television the ability to
make one purchase to deliver virtual studio effects with news,  weather,  sports
and  entertainment  programming from the same integrated  system. In addition to
free-form 3D weather  graphics,  the WxStudio  Virtual Studio System supports an
unlimited number of cameras,  foreground and background images and obstructions,
and instant switching between backgrounds.

Financial Services

                                    1999             1998              1997
                                    ----             ----              ----

Revenues (in millions)              $19.4            $13.4             $10.3
Subscribers at year-end             21,900           15,800            12,900


         DTN Financial Services' core business continues to focus on serving the
exploding number of individual  investors as well as members of the professional
financial industry.  This is accomplished by offering an array of time-sensitive
yet  affordable  information  services,  plus a suite of  business  applications
designed for the  financial  professional.  This strategy is critical due to the
highly competitive nature of the industry.

         DTN Financial  Services  brings together a broad selection of financial
information and has capitalized on the explosive  growth in online  investing by
offering well-conceived and attractively priced Internet services. DTN Financial
Services  continues to integrate  information  from a variety of sources such as
Bridge,  Liberty  Brokerage  and Market News  Service,  UPI, New York Times,  PR
Newswire,  Business Wire,  Futures World News, Dow Jones,  Associated  Press and
others. In the past year, the services began to transition from information only
to services with information and transactional capabilities.

         A la carte, optional services offer subscribers an even greater variety
of  financial  data,  including  stock  selection  and timing  advice,  earnings
estimates,  fundamental  stock  market  data,  U.S.  Treasury  quotes  and other
financial  market-related  services.  These  combinations  allow each service to
maintain a competitive advantage in the market.

         Subscribers   include  individual   investors,   independent   brokers,
financial  advisors and financial  institutions.  With  competition  coming from
sources such as commodity news services, diversified media companies and smaller
niche providers, DTN Financial Services continues to differentiate itself in the
industry by offering new services at competitive prices.

                                       13
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Individual Investors

         With the  growing  number of  online  investors  estimated  to reach 15
million by the end of 2000, DTN Financial Services has strategically  positioned
its two leading, streaming  Internet-delivered  services, DTN.IQ and InterQuote,
to continue to capture  market share among this group.  Aiding this endeavor was
the  incorporation  of  direct  access  to  online  trading  into  both of these
services.

DTN.IQ

         Since its inception in May 1998,  DTN.IQ  (www.DTNIQ.com)  has steadily
outperformed company expectations, and operating results for fiscal 1999 confirm
this trend. A  contributing  factor to the increase in sales during 1999 was the
June integration of direct online trading capabilities.  Through our established
relationships  with several  online  brokerage  firms,  DTN.IQ  subscribers  can
execute  trading  decisions  directly  from  their  quote  screens  in  seconds.
Utilizing  non-browser-based  software,  traders  can place  orders and  receive
return confirmations of their transactions in real-time.

         A vital  consequence  of  trading  integration  is the  ability  of DTN
Financial  Services  to  generate  revenue  from  customers'  trading  activity.
Transactions  by both  DTN.IQ and  InterQuote  customers  became a source of new
revenue during the fourth quarter of 1999.

         In  addition,   the  streaming  real-time  quotes,  news  and  charting
capabilities  provided by DTN.IQ  offers  functionality  critical to  individual
investors and traders using the Internet.

InterQuote

         In May 1999,  DTN  Financial  Services  completed  the  acquisition  of
Paragon  Software,  Inc. in Milwaukee,  Wisconsin.  Paragon's  flagship product,
InterQuote  (www.interquote.com),  delivers  real-time or delayed market data to
individual  investors  via the Internet  and was one of the first such  services
ever offered.  With the acquisition of Paragon,  DTN Financial Services obtained
3,800 subscribers and the ability to round out its offerings for both casual and
extremely active investors.

         InterQuote's unique front-end  application appeals to investors needing
cost  effective,  a la carte  features.  An affordable  yet robust basic service
includes  streaming  quotes  on  stocks,  futures  and  options,   intraday  and
historical  charts,   pager  quotes  and  alerts,  and  an  extensive  array  of
fundamental data.  Subscribers may further enhance the service by adding premium
services  such as Nasdaq Level II pricing,  Dow Jones  Business  News, AP Online
News and custom market scanning tools.  Additional  premium services are planned
for inclusion in 2000.

Other Financial Services

         Other financial  information  services  available to the individual and
professional investor are DTN Real-Time,  DTN SPECTRUM and DTN Wall Street. Each
of these services may be delivered by customer  preference via satellite,  cable
television's VBI (vertical blanking interval) or designated phone line.

         These  services  provide  real-time  or delayed  stock and stock option
quotes,  news and commentary as well as other  time-sensitive  financial  market
data.  All of the  services  include  information  integrated  from a variety of
sources  including  DTN's  commodity  ticker plant,  Bridge,  Standard & Poor's,
Liberty  Brokerage and over 40 newswires  including  Dow Jones and AP.  Optional
services from some of the world's leading  investment service providers are also
available and may be delivered on most platforms.

Financial Professionals

         For   financial   professionals,   the   focus   in  1999   turned   to
Internet-delivered services. In September 1999, National Datamax, Inc., a wholly
owned subsidiary of DTN, introduced an extranet service for Broker/Dealers.


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Rep Center

         The web-based service, RepCenter (www.repcenter.com),  is customized to
resemble the Broker/Dealer's  public web site and gives  representatives  secure
access to commission  reports,  sales  letters,  business  forms and home office
announcements from anywhere.  The service also provides a portal page of quotes,
news and charts.  RepCenter increases National Datamax's presence with financial
professionals  and makes it easy for them to launch National  Datamax's  contact
management, fund analysis or portfolio management software from RepCenter's main
page or purchase products online.

         National  Datamax also  introduced  upgrades to all of its  fundamental
products and expanded the data delivery capabilities for the Mutual Fund, Stock,
Industry and Variable Annuity analysis programs.

         With the  addition of  RepCenter,  National  Datamax has  expanded  its
offerings for financial  professionals by providing a complete business solution
encompassing  prospecting,  client management,  asset management,  reporting and
business management.

Enterprises

         Financial Window Network (FinWin),  a new service introduced in October
1999,  dramatically  broadened the market for DTN Financial  Services to include
any enterprise desiring to enrich their web site with popular financial content.

Financial Window Network or FinWin

         Leveraging  existing  content  and  technology,  in  October  1999  DTN
Financial  Services  launched FinWin  (www.finwin.com),  a financial portal site
that may be customized  for public or private web sites.  FinWin builds  traffic
instantly to site by the addition of market quotes,  news,  interactive  charts,
list of most actives, major indices and custom watchlists and portfolios. FinWin
may be added to a site for free (DTN  retains  advertising  space) or by monthly
subscription without advertising.

         With FinWin,  DTN  Financial  Services  gains from two solid  operating
factors,  the  opportunity  to  extend  product  sales  beyond  the  traditional
financial market and the creation of a viable advertising-based  revenue stream.
A survey of current customers attests to this first phenomenon. FinWin customers
come from a wide range of industries including Internet service providers, local
and  regional  news   organizations,   search   engines,   web  development  and
metropolitan  community  sites, in addition to conventional  financial  services
businesses.

         The establishment of an advertising-based service enables DTN Financial
Services to fully compete in this  prevailing  Internet  business  model,  while
FinWin  customers   receive  the  full  advantage  of  edited  content  from  an
established financial expert.

         Despite a year end release,  FinWin  established  a strong sales record
for the final quarter of 1999 and is beginning to  contribute to operating  cash
flow.

Energy Services

                                    1999             1998              1997
                                    ----             ----              ----

Revenues (in millions)              $18.7            $16.1             $14.3
Subscribers at year-end             8,700            8,400             8,400

         Energy related services include DTNergy for the refined fuels,  natural
gas industries and electric industries. DTNergy provides pricing information and
communication services for the refined fuels industry.  This service consists of
several pages of delayed  energy  futures and options  quotes plus selected news
and financial information.

                                       15
<PAGE>

         DTNergy is designed to connect refiners (producers of refined fuels) to
wholesalers  (distributors  of refined  fuels).  The refiner  sends refined fuel
prices to  wholesalers  authorized to receive this  information.  The refiner is
also   capable  of  sending   terminal   alerts,   electronic   funds   transfer
notifications, invoices, and other communications to the wholesaler. The DTNergy
system  carries  more  than two  million  messages  a month  for this  industry.
Subscribers  can also  select  from a variety  of  optional  services  providing
additional prices or news related to the petroleum industry.

         The  strength of the  DTNergy  Refined  Fuel  service is the ability to
deliver,  within  seconds,  accurate  refiner  terminal  prices and other  vital
communications  to the  wholesalers.  This service is more reliable,  timely and
less  expensive  than  the  competition,   which  utilize  telephone   delivered
printer-only systems and FAX services.

         DTNergy generates revenue from two primary sources,  the wholesaler and
the refiner.  Wholesalers  currently pay a month subscription fee while refiners
pay fees based on the number and length of communications sent to wholesalers.

         Refiners use DTNergy  communications  to link to their wholesalers with
the  implementation  in 1997 of EDI (Electronic Data Interchange) fuel invoices.
EDI/VAN  (Value  Added  Network)  services  help  automate  customers'  business
processes by converting  refiner text invoices into an industry standard format.
Once these  invoices are in a standard  format,  the invoice data is transferred
into a customer's accounting system from the ACE unit.

         DTNergy also  provides an  information  service for the natural gas and
electric industries. Subscribers receive instant or delayed NYMEX energy futures
and options quotes, a comprehensive  weather package and industry  specific news
and market  information.  This service targets energy  producers and generators,
transporters, marketers, utilities and larger energy consumers.

         DTNergy  enjoys  a  strong  position  within  the  energy  marketplace.
Although  there are  technologies  available to petroleum  suppliers  that would
allow these suppliers to communicate directly with their petroleum  wholesalers,
the suppliers have been  unsuccessful in implementing  technologies  such as the
Internet  to  displace  DTNergy.   The  main  reason  for  DTNergy's   continued
proliferation  within the petroleum industry is that most petroleum  wholesalers
purchase  petroleum  products  from more than one  supplier.  DTNergy's  ability
aggregate   supplier  data,  create  standardize  data  formats  for  electronic
processing of supplier data and provide one-stop  customer service for petroleum
wholesalers has added value that no one supplier can offer on there own.

OTHER SERVICES

DTNauto

         DTNauto is an information and  communication  service for professionals
involved in the automotive, finance and insurance industries. The service offers
precision,  time  sensitive  information  for analyzing new and used  automotive
vehicle values.

         In 1999, DTNauto began development of its web site (www.DTNauto.com) to
provide automotive and related industries with time sensitive  wholesale pricing
and market analysis,  portability and enhanced  functionality  via the Internet.
Subscriptions  to  DTNauto.com  will be  available in the first half of 2000 and
will be competitively priced.

DTN Joint Venture Services

         DTN joined forces with several companies to market their services using
DTN technology.  These services are DAT Transportation  Terminal,  TracElectric,
DTN InfoLink and DTN Missing Children Information Center (MCIC).

                                       16
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DTN InfoLink

         DTN  InfoLink  provides  real-time  news,  weather,  sports  and market
information to the grocery and transportation  industries.  With the addition of
the latest card reader terminals and printing  technologies,  unique  promotions
and product offerings can be delivered to public use kiosks.  These kiosks allow
interactive  coupon  redemption,  printing of recipes,  and the  opportunity  to
integrate customer loyalty and frequent user programs.

DAT

         The DAT  (Dial-A-Truck)  Transportation  Terminal  service,  located in
Beaverton, OR, is an information communication system for the trucking industry.
The service provides load and truck matching  performed on a database of 100,000
listings updated daily.

         DAT allows  subscribers  to input their  listings into the DTN receiver
and send this  information to a database using the internal  modem.  The service
provides  subscribers with the ability to perform  extensive  searches to locate
loads and trucks and to set alarms alerting users of a match.

         The service also provides regional radar weather maps of major highways
and  interstate  systems,  transportation  news,  diesel  fuel  prices and other
financial information related to the trucking industry.

         DAT targets all freight  brokers  and  carriers  throughout  the United
States, Canada and Mexico.

TracElectric

         TracElectric  is  an  equipment  locator  service  for  the  electrical
equipment industry. This service provides over 100 pages of new, remanufactured,
surplus and used electrical equipment listings.  The service connects buyers and
sellers throughout the United States and Canada.

Missing Children Information Program

         DTN  Missing  Children   Information  Center  (MCIC)  provides  instant
transmission of data regarding children in danger to local,  regional,  national
and Canadian  outlets.  In an effort to assist parents,  police and the National
Center for Missing and Exploited  Children  (NCMEC) in locating missing children
and the criminals involved,  photos and information regarding these children are
posted as a public service on all DTN color systems.

         As a result of the close working  relationship  with NCMEC,  a national
kiosk  program  has been  developed.  Sponsors  for the kiosk  program are being
identified  and kiosks are being placed in shopping  malls,  airports,  schools,
hospitals, government buildings and other high-pedestrian traffic areas.

                                       17
<PAGE>



Employee Data

         At  December  31, 1999 the  Company  had  approximately  1,100 full and
part-time employees.

         (d)  Financial Information about Foreign and Domestic Operations and
              Export Sales:

              Not applicable

ITEM 2.  PROPERTIES.

         The Company leases its executive and  administrative  offices in Omaha,
Nebraska.  Approximately 108,000 square feet of office space is leased for these
offices for periods up through May 2010. The Company also occupies approximately
19,000  square feet of office  space  located in  Urbandale,  Iowa,  through the
Broadcast Partners  acquisition.  As part of the acquisition of Kavouras,  Inc.,
the Company  acquired a building in  Burnsville,  Minnesota  with  approximately
52,000  square feet which is Kavouras'  headquarters.  The Houston  Company also
leases  office  space  in  Lubbock,  Texas;  Memphis,   Tennessee;   San  Diego,
California;  Milwaukee,  Wisconsin;  Red Bank, New Jersey;  Houston,  Texas; and
Lexington, Massachusetts for business operations related to acquisitions.

         In  addition,  the Company  leases three  distribution  centers for the
purpose  of  storing  and  distributing  the  electronic   equipment  needed  by
subscribers to receive the company's  services.  The main distribution center is
located in Omaha,  Nebraska and occupies  approximately  28,000 square feet. The
Company  also  serves  its  Canadian   subscribers  with  a  2,500  square  foot
distribution  center located in Winnipeg,  Manitoba.  Approximately 7,000 square
feet, located in Urbandale, Iowa, was added to the Company's distribution center
by way of the 1996 acquisition. The leases related to these distribution centers
are for various periods up through December, 2003.

         The  information  set forth in  Footnote  14 "Leases" on page 54 of the
Company's  1999  Annual  Report  to  Shareholders  is  incorporated   herein  by
reference.

ITEM 3.  LEGAL PROCEEDINGS.

         The  Company  is not a  party  to nor is its  property  subject  to any
material  pending  legal  proceedings,  other than ordinary  routine  litigation
incidental to its business.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

         No  matter  was  submitted  to a vote of the  security  holders  of the
Company during the fourth quarter of the fiscal year ended December 31, 1999.

                                       18
<PAGE>



                      EXECUTIVE OFFICERS OF THE REGISTRANT

         Information  on the  current  executive  officers  of the company is as
follows:

<TABLE>
<CAPTION>
                                                                                    Year Joined
          Name                        Title                              Age        the Company
- --------------------------------------------------------------------------------------------------
<S>                       <C>                                            <C>            <C>
Greg T. Sloma             President and Chief                            48             1993
                          Operating Officer

Brian L. Larson           Senior Vice President, Chief                   39             1993
                          Financial Officer and Secretary

James J. Marquiss         Senior Vice President, Director                55             1986
                          of Business Research and Product
                          Development

Roger W. Wallace          Senior Vice President and                      43             1984
                          President, Ag Services Division

Charles R. Wood           Senior Vice President and                      59             1989
                          President, Financial Services Division

William R. Davison        Vice President and                             45             1989
                          President, Ag Services

Scott A. Fleck            Vice President and                             32             1991
                          Director of Engineering

Daniel A. Petersen        Corporate Controller and Treasurer             34             1990

Joseph Urzendowski        Vice President, Operations                     36             1992

</TABLE>

         The executive officers serve annual terms, and are elected by the board
of directors at their annual board of directors meeting in April of each year.

                                       19
<PAGE>



                                     PART II

ITEM 5.  MARKET  FOR THE  REGISTRANT'S  COMMON  STOCK  AND  RELATED  STOCKHOLDER
         MATTERS.

         Information  concerning the market for the Company's  common stock, the
number of stockholders of record and the Company's  dividend history is on pages
57  and  59  of  the  Company's  1999  Annual  Report  to  Shareholders  and  is
incorporated herein by reference.

         The company's most  restrictive  loan covenant  restricts cash dividend
payments to 25% of net income after taxes in the previous four quarters.

ITEM  6. SELECTED FINANCIAL DATA.

         Selected  financial data for the Company is on page 32 of the company's
1999 Annual Report to Shareholders and is incorporated herein by reference.

ITEM 7. MANAGEMENT'S  DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS.

         Management's discussion and analysis of financial condition and results
of operations  is on pages 33 through 42 of the Company's  1999 Annual Report to
Shareholders and is incorporated herein by reference.

Certain Factors That May Affect Future Results

         From time to time, information provided by the Company, statements made
by its employees or information  included in its filings with the Securities and
Exchange  Commission  (including  this Form 10-K and documents  incorporated  by
reference)  may contain  statements  which are not historical  facts,  so-called
"forward-looking statements". These forward-looking statements are made pursuant
to the safe harbor provisions of the Private Securities Litigation Reform Act of
1995. The Company's  actual future results may differ  significantly  from those
stated in any forward-looking  statements.  Forward-looking statements involve a
number of risk and uncertainties, including, but not limited to, product demand,
pricing,  market  acceptance,   inflation,   risks  in  product  and  technology
development,  product competition,  acquisitions,  key personnel, and other risk
factors  detailed in this Annual Report on Form 10-K and in the Company's  other
Securities and Exchange Commission filings.

ITEM  7A.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         Information concerning  quantitative and qualitative  disclosures about
market risk is on page 36 of the Company's  1999 Annual  Report to  Shareholders
and is incorporated herein by reference.

ITEM  8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

         The financial statements of the Company,  together with the Independent
Auditors' Report, are on pages 43 through 56 of the Company's 1999 Annual Report
to Shareholders and are incorporated herein by reference.

         Supplementary  quarterly  financial  information  is on  page 57 of the
Company's  1999 Annual  Report to  Shareholders  and is  incorporated  herein by
reference.

ITEM  9.  CHANGES  IN AND  DISAGREEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND
          FINANCIAL DISCLOSURE.

         None

                                       20
<PAGE>

                                    PART III

         The information  required by this Part III is incorporated by reference
from the registrant's  definitive proxy statement for the 2000 annual meeting of
the registrant's  stockholders  scheduled for April 26, 2000, which involves the
election of directors.  The  definitive  proxy  statement will be filed with the
Securities and Exchange  Commission not later than 120 days after the end of the
year covered by this Form 10-K.


                                     PART IV

ITEM  14.      EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K.

(A)      1.    Financial Statements:

         The Registrant's  financial  statements,  together with the Independent
Auditors' Report, are incorporated herein by reference to the 1999 Annual Report
to Shareholders,  pages 43 through 56. With the exception of the  aforementioned
information and the information  incorporated by reference into Items 2,5,6,7,7A
and 8 of this  report,  the  Annual  Report to  Shareholders  for the year ended
December  31,  1999,  is not to be deemed  filed as a part of this  report.  The
supplemental  financial  information  listed below should be read in conjunction
with the financial  statements in the Annual Report to Shareholders for the year
ended December 31, 1999.

         2.    Financial Statement Schedule:                             Page
                                                                         ----

               Auditors' Report on Financial Statement Schedule           29

               Schedule
                Number                    Description of Schedule
                  II                 Valuation and Qualifying Accounts    30

         All other  schedules are omitted because they are not applicable or not
required,  or because the  required  information  is  included in the  financial
statements or notes thereto.

(B)      Reports on Form 8-K:

         1.    The  Registrant  filed a report on Form 8-K dated  March 12, 1999
               related to the amendment of its shareholder  rights plan to allow
               for  the  purchase  of up to 15% of the  Company's  common  stock
               before the rights under the plan became exercisable.

         2.    The  Registrant  filed a report on Form 8-K dated  March 24, 1999
               related to the  resignation  of Roger R.  Brodersen of all of his
               positions  as  an  officer  and  director  of  the  Company,  the
               resignation  of Scott A.  Fleck,  Richard R.  Jaros,  J.  Michael
               Parks, and Jay E. Ricks as directors of the Company, the election
               of Jay H.  Golding,  Anthony S. Jacobs and Joseph F.  Mazzella as
               directors  of the  Company,  the  amendment  of the Bylaws of the
               Company  to reduce  from 9 to 7 the  number of  directors  of the
               Company,  and to amend the shareholder rights plan to provide for
               such rights to expire on March 24, 1999,  therefore  causing such
               rights to become unexercisable.

         3.    The  Registrant  filed a report on Form 8-K dated  March 10, 2000
               related to the  definitive  agreement  between  the  Company  and
               Veronis,  Suhler &  Associates  Communications  Partners  III, LP
               (VS&A III)  whereby  VS&A III will make a tender  offer to all of
               the Company's shareholders at a price of $29.00 per share.

                                       21
<PAGE>

         No reports on Form 8-K were filed by the  Registrant  during the fourth
quarter of the year ended December 31, 1999.

(C)      Exhibits:

         (3)   (a)       Certificate of Incorporation of Registrant.

               (b)       By-Laws of Registrant.
         (These documents are filed as exhibits to the Registrant's Registration
         Statement on Form S-1 as filed December 4, 1987.)

         (4)   (a)       Specimen certificate  representing shares of Common
                         Stock, $.001 par value, of Registrant.
        (This document is filed as an exhibit to the Registrant's  Registration
         Statement on Form S-1 as filed  November 4,
         1988.)

               (b)       Certificate of Incorporation of Registrant.
         (This document is filed as an exhibit to the Registrant's  Registration
         Statement on Form S-1 as filed December 4, 1987.)

         (10)  (a)       Registrant's Stock Option Plan of 1989.
         (This  document  is included  as an exhibit to the  Registrant's  Proxy
         Statement  for the  Annual  Meeting of  Shareholders  held on April 26,
         1989.)

               (b)       Registrant's Non-employee Directors Stock Option Plan.
         (This  document  is included  as an exhibit to the  Registrant's  Proxy
         Statement  for the  Annual  Meeting of  Shareholders  held on April 26,
         1989.)

               (c)       Form   of   indemnification   agreement   between   the
                         Registrant  and  the  Officers  and  Directors  of  the
                         Registrant.
         (This document is filed as an exhibit to the Registrant's  Registration
         Statement on Form S-1 as filed May 22, 1989.)

               (d)       First Amendment to  Registrant's  Employee Stock Option
                         Plan of 1989.

               (e)       First Amendment to Registrant's  Non-employee Directors
                         Stock Option Plan.
         (These  documents  are included as exhibits to the  Registrant's  Proxy
         Statement  for the  Annual  Meeting of  Stockholders  held on April 25,
         1990.)

               (f)       Second Amendment to Registrant's  Employee Stock Option
                         Plan of 1989.

               (g)       Second Amendment to Registrant's Non-employee Directors
                         Stock Option.
         (These  documents  are included as exhibits to the  Registrant's  Proxy
         Statement  for the  Annual  Meeting of  Stockholders  held on April 24,
         1991.)

               (h)       Third  Amendment to  Registrant's  Stock Option Plan of
                         1989.

               (i)       Third Amendment to Registrant's  Non-Employee Directors
                         Stock Option.

               (j)       Fourth Amendment to Employee Stock Option Plan of 1989.

               (k)       Fourth Amendment to Non-Employee Directors Stock Option
                         Plan.
         (These  documents  are included as exhibits to the  Registrant's  Proxy
         Statement for the Annual Meeting of  Stockholders  to be held April 27,
         1994).

               (l)       Restated  and  amended  Non-Employee   Directors  Stock
                         Option Plan.
                                       22
<PAGE>

         (This  document  is included  as an exhibit to the  Registrant's  Proxy
         Statement for the annual meeting of  stockholders  to be held April 26,
         1995).

               (m)       Senior  Subordinated  Note dated June 30, 1994  between
                         the Registrant and Equitable Capital Private Income and
                         Equity Partnership II, L.P.
         (This  document is included  as an exhibit to the  Registrant's  Annual
         Report on Form 10-K as filed March 28, 1995).

               (n)       Lease   agreement   dated  May  2,  1995   between  the
                         Registrant  and The  Prudential  Insurance  Company  of
                         America.

               (o)       First  Amendment to lease  agreement  dated May 2, 1995
                         between the  Registrant  and The  Prudential  Insurance
                         Company of America.

               (p)       Purchase  and  service  agreement  dated July 13,  1995
                         between the Registrant and Knight-Ridder Financial.

               (q)       Senior   Subordinated   Notes  and   Warrant   Purchase
                         Agreement  dated June 30, 1994 between  Registrant  and
                         Equitable Capital Private Income and Equity Partnership
                         II, L.P.

               (r)       First  Amendment  to  Senior   Subordinated  Notes  and
                         Warrant Purchase  Agreement dated June 30, 1994 between
                         Registrant  and Equitable  Capital  Private  Income and
                         Equity Partnership II, L.P.

         (These  documents are included as exhibits to the  Registrant's  Annual
         Report on Form 10-K as filed March 22, 1997).

               (s)       Independent   Sales   Representative   Agreement  dated
                         September 1, 1997, between  Registrant,  Huston,  Inc.,
                         and Phil Huston.

               (t)       Second  Amendment to the lease  agreement  dated May 2,
                         1995,   between  the   Registrant  and  The  Prudential
                         Insurance Company of America.

               (u)       Third  Amendment  to the lease  agreement  dated May 2,
                         1995,   between  the   Registrant  and  The  Prudential
                         Insurance Company of America.

               (v)       Fourth  Amendment to the lease  agreement  dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (w)       Second Amendment to the Senior  Subordinated  Notes and
                         Warrant Purchase Agreement dated June 30, 1994, between
                         the Registrant and Equitable Capital Private Income and
                         Equity Partnership II, L.P.

         (These  documents are included as exhibits to the  Registrant's  Annual
         Report on Form 10-K as filed March 27, 1997).

               (x)       Fifth Amendment to Employee Stock Option Plan of 1989.
         (This  document  is included  as an exhibit to the  Registrant's  Proxy
         Statement for the Annual  Meeting of  Stockholders  to be held on April
         23, 1997).

               (y)       Purchase and Sale of Assets  Agreement dated January 2,
                         1997,   between  the  Registrant,   and  Northern  Data
                         Communications and Market Quoters, Inc.

               (z)       Purchase and Service  Agreement dated October 24, 1997,
                         between the Registrant and the Arkansas Farm Bureau.

                                       23
<PAGE>

               (aa)      Purchase and Restrictive Covenant Agreement dated March
                         14,   1997,   between   the   Registrant   and   Market
                         Communications Group, LLC.

               (ab)      Asset Purchase  Agreement  dated July 1, 1997,  between
                         the Registrant and Cotton Communications Network, Inc.

               (ac)      Fifth  Amendment  to the lease  agreement  dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (ad)      Sixth  Amendment  to the lease  agreement  dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (ae)      Seventh  Amendment to the lease  agreement dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (af)      Eighth  Amendment to the lease  agreement  dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (ag)      Ninth  Amendment  to the lease  agreement  dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (ah)      Tenth  Amendment  to the lease  agreement  dated May 2,
                         1995,   between  the  Registrant  and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (ai)      1997  Revolving  Credit  Agreement  dated  February 26,
                         1997, between the Registrant and a group of banks.

               (aj)      First Amendment to the 1997 Revolving  Credit Agreement
                         dated  February 26, 1997,  between the Registrant and a
                         group of banks.

               (ak)      Second Amendment to the 1997 Revolving Credit Agreement
                         dated  February 26, 1997,  between the Registrant and a
                         group of banks.

               (al)      1997 Term  Credit  Agreement  dated  February  26, 1997
                         between the Registrant and a group of banks.

               (am)      1997 Security Agreement dated February 26, 1997 between
                         the Registrant and a group of banks.

               (an)      Sixth Amendment to Non-Employee  Directors Stock Option
                         Plan.

               (ao)      Seventh  Amendment  to  Non-Employee   Directors  Stock
                         Option Plan.
         (These  documents are included as exhibits to the  Registrant's  Annual
         Report on Form 10-K as filed March 30, 1998).

               (ap)      Asset Purchase Agreement dated February 5, 1998 between
                         the Registrant and Market Information of Colorado, Inc.

               (aq)      Asset  Purchase  Agreement  dated March 3, 1998 between
                         the Registrant, CDS Group, Inc. and Tim Huggins.

               (ar)       Stock Acquisition Agreement dated March 30, 1998 among
                          the Registrant, Stephen P. Kavouras and the Stephen P.
                          Kavouras   Revocable   Trust  under   agreement  dated
                          September 13, 1995 and the  Irrevocable  GST Trust for
                          Stephen P.  Kavouras  under  agreement  dated July 29,
                          1997.

                                       24
<PAGE>

               (as)       Stock  Purchase  Agreement  dated March 30, 1998 among
                          the Registrant, Stephen P. Kavouras and the Stephen P.
                          Kavouras   Revocable   Trust  under   agreement  dated
                          September 13, 1995 and the  Irrevocable  GST Trust for
                          Stephen P.  Kavouras  under  agreement  dated July 29,
                          1997.

               (at)      License Agreement dated April 6, 1998 between Kavouras,
                         Inc. and Earthwatch Communications, Inc.

               (au)      Option Agreement dated April 6, 1998 between  Kavouras,
                         Inc. and Earthwatch Communications, Inc.

               (av)      Asset Purchase  Agreement  dated April 23, 1998 between
                         the Registrant and SmartServ Online.

               (aw)      Stock Purchase Agreement dated May 27, 1998 between the
                         Registrant and Donald W. Bowles,  Excel  Interfinancial
                         Corporation, Charter Financial Holdings, LLC, Steven L.
                         Reynolds, and Douglas Vanderbilt.

               (ax)      Purchase  Agreement  dated October 14, 1998 between the
                         Registrant, Asset Growth Corporation, Marcia C. Kennedy
                         and Scott L. Brown.

               (ay)       Agreement  and Plan of Merger dated  November 12, 1998
                          between the Registrant,  Weather Services  Corporation
                          and ABRY Broadcast Partners II, L.P.

               (az)       Issue of Common Stock Purchase  Warrant dated December
                          11,  1998  to  Peter  R.  Leavitt,   pursuant  to  the
                          Agreement  and Plan of Merger dated as of November 12,
                          1998  between the  Registrant,  Merger Sub,  WSC,  and
                          ABRY.

               (ba)       Issue of Common Stock Purchase  Warrant dated December
                          11, 1998 to ABRY Broadcast Partners II, LP pursuant to
                          the  Agreement and Plan of Merger dated as of November
                          12, 1998 between the Registrant,  Merger Sub, WSC, and
                          ABRY.

               (bb)      Amendment  dated  January  12,  1999 to Stock  Purchase
                         Agreement dated May 27, 1998 between the Registrant and
                         Donald W.  Bowles,  Excel  Interfinancial  Corporation,
                         Charter  Financial  Holdings,  LLC, Steven L. Reynolds,
                         and Douglas Vanderbilt.

               (bc)       Letter  of  Intent  dated  January  26,  1999 to merge
                          wholly  owned   subsidiary  of  the  Registrant   with
                          SmartServ Online, Inc.

               (bd)       Consent to Prepayment of Subordinated Debt dated March
                          16, 1998 between Registrant and a group of banks.

               (be)       Third Amendment to the 1997 Revolving Credit Agreement
                          dated  February 26, 1997 between the  Registrant and a
                          group of banks.

               (bf)       Fourth   Amendment  to  the  1997   Revolving   Credit
                          Agreement   dated   February   26,  1997  between  the
                          Registrant and a group of banks.

               (bg)       Fifth Amendment to the 1997 Revolving Credit Agreement
                          dated  February 26, 1997 between the  Registrant and a
                          group of banks.

                                       25
<PAGE>

               (bh)       First  Amendment  to the 1997  Term  Credit  Agreement
                          dated February,  26, 1997 between the Registrant and a
                          group of banks.

               (bi)       Second  Amendment  to the 1997 Term  Credit  Agreement
                          dated  February 26, 1997 between the  Registrant and a
                          group of banks.

               (bj)       First  Amendment to the 1997 Security  Agreement dated
                          February 26, 1997 between the  Registrant  and a group
                          of banks.

               (bk)       1998 Revolving Credit Agreement dated December 7, 1998
                          between the Registrant and a group of banks.

               (bl)       First Amendment to the 1998 Revolving Credit Agreement
                          dated  December 7, 1998 between the  Registrant  and a
                          group of banks.

               (bm)       1998 Term  Credit  Agreement  dated  December  7, 1998
                          between the Registrant and a group of banks.

               (bn)      1998 Security  Agreement dated December 7, 1998 between
                         the Registrant and a group of banks.

               (bo)      Subsidiary   Security  Agreement  dated  June  1,  1998
                         between National Datamax, Inc. and a group of banks.

               (bp)      Subsidiary   Security  Agreement  dated  July  1,  1998
                         between Kavouras, Inc. and a group of banks.
         (These  documents are included as exhibits to the  Registrant's  Annual
         Report on Form 10-K as filed March 23, 1999).

               (bq)      Purchase  Agreement  dated January 14, 1999 between the
                         Registrant,   Waterman  Associates,   Inc.,  Thomas  L.
                         Waterman and Louise Waterman

               (br)      Stock Purchase  Agreement  dated March 17, 1999 between
                         the  Registrant,  Asset Growth  Corporation,  Marcia C.
                         Kennedy and Scott L. Brown.

               (bs)       Amendment  to  License  Agreement  dated  May 1,  1999
                          between Registrant and SmartServ Online, Inc.

               (bt)      Common Stock Purchase  Warrant  Agreement  dated May 1,
                         1999 between Registrant and SmartServ Online, Inc.

               (bu)      Funding   Agreement  dated  November  9,  1999  between
                         Registrant and Ag1.com.

               (bv)      Security  Agreement  dated  November  9,  1999  between
                         Registrant and Ag1.com.

               (bw)      Asset  Purchase   Agreement  dated  November  11,  1999
                         between  Registrant,  FlightBrief Online Service,  Inc.
                         and Gregg F. Lewis.

               (bx)      Asset  Purchase and Sale  Agreement  dated  December 8,
                         1999 between Kavouras and Radtec Engineering, Inc.

               (by)      Amendment to Asset  Purchase and Sale  Agreement  dated
                         December  13, 1999  between  Kavouras  Inc.  and Radtec
                         Engineering, Inc.

                                       26
<PAGE>

               (bz)      Series A Preferred  Stock  Agreement dated December 16,
                         1999 between the Registrant,  EarthScan  Network,  Inc.
                         and Photon Research Associates, Inc.

               (ca)      Eleventh  Amendment to the lease agreement dated May 2,
                         1995  between  the   Registrant   and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (cb)      Twelfth  Amendment to the lease  agreement dated May 2,
                         1995  between  the   Registrant   and  LAFP-SF,   Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

               (cc)      Thirteenth  Amendment to the lease  agreement dated May
                         2, 1995  between  the  Registrant  and  LAFP-SF,  Inc.,
                         successors  in  interest  to The  Prudential  Insurance
                         Company of America.

        (12)   Not applicable.
        (13)   Registrant's 1999 Annual Report to Shareholders.
               (This document is hereby incorporated by reference.)
        (16)   None.
        (18)   None.
        (21)   Subsidiaries.
        (22)   None.
        (23)   Consent of Deloitte & Touche LLP.
        (24)   None.
        (27)   Financial Data Schedule.
        (28)   None.
        (99)   Proxy  Statement for the Annual  Meeting of  Shareholders  of the
               Registrant scheduled for April 26, 2000. (This document is hereby
               incorporated  by reference and will be filed with the  Securities
               and Exchange  Commission not later than 120 days after the end of
               the year covered by this Form 10-K.)

                                       27
<PAGE>



                                   SIGNATURES

        Pursuant to the  requirements  of Section 13 or 15(d) of the  Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Data Transmission Network Corporation,
a Delaware Corporation

By:     /s/ Greg T. Sloma
        --------------------------------
        Greg T. Sloma
        President and Chief Operating Officer

Dated March 15, 2000.

        Pursuant to the  requirements  of the  Securities  Exchange Act of 1934,
this  report has been  signed  below by the  following  persons on behalf of the
Registrant and in the capacities and on the dates indicated.

By:     /s/ Greg T. Sloma                                         March 15, 2000
        ---------------------------------------------
        Greg T. Sloma, President, Chief Operating
        Officer and Director

By:     /s/ Peter H. Kamin                                        March 15, 2000
        ---------------------------------------------
        Peter H. Kamin, Chairman of the Board

By:     /s/ Roger W. Wallace                                      March 15, 2000
        ---------------------------------------------
        Roger W. Wallace, Senior Vice President
        President-Ag Services Division and Director

By:     /s/ Brian L. Larson                                       March 15, 2000
        ---------------------------------------------
        Brian L. Larson, Senior Vice President,
        Chief Financial Officer and Secretary

By:     /s/ David K. Karnes                                       March 15, 2000
        ---------------------------------------------
        David K. Karnes, Director

By:     /s/ Jay H. Golding                                        March 15, 2000
        ---------------------------------------------
        Jay H. Golding, Director

By:     /s/ Anthony S. Jacobs                                     March 15, 2000
        ---------------------------------------------
        Anthony S. Jacobs, Director

By:     /s/ Joseph F. Mazzella                                    March 15, 2000
        ---------------------------------------------
        Joseph F. Mazzella, Director

By:     /s/ Daniel A. Petersen                                    March 15, 2000
        ---------------------------------------------
        Daniel A. Petersen, Corporate Controller
        and Treasurer

                                       28
<PAGE>



INDEPENDENT AUDITORS' REPORT

Board of Directors and Shareholders
Data Transmission Network Corporation
Omaha, Nebraska

         We  have  audited  the  consolidated   financial   statements  of  Data
Transmission Network Corporation and subsidiaries (the "Company") as of December
31, 1999 and 1998,  and for each of the three years in the period ended December
31, 1999 and have issued our report thereon dated February9, 2000 (March 3, 2000
as to Note 18); such  financial  statements and report are included in your 1999
Annual Report to  Stockholders  and are  incorporated  herein by reference.  Our
audits also included the financial statement schedule of the Company,  listed in
Item 14(a) 2. This financial  statement  schedule is the  responsibility  of the
Company's  management.  Our responsibility is to express an opinion based on our
audits. In our opinion,  such financial statement  schedule,  when considered in
relation to the basic financial statements taken as a whole,  presents fairly in
all material respects the information set forth therein.

DELOITTE & TOUCHE LLP


Omaha, Nebraska
February 9, 2000
(March 3, 2000 as to Note 18)

                                       29
<PAGE>



                                                                     Schedule II

                      DATA TRANSMISSION NETWORK CORPORATION

                        VALUATION AND QUALIFYING ACCOUNTS

                  YEARS ENDED DECEMBER 31, 1999, 1998, AND 1997


<TABLE>
<CAPTION>
                                    Balance at                       Charged to                      Balance at
                                    Beginning       Charged to         Other                             End
Description                         of  Period       Expenses         Accounts      Deductions       of  Period
- -----------                         ----------       --------         --------      ----------       ----------



Allowance for doubtful
accounts:

Year ended December 31
<S>                               <C>                <C>                             <C>             <C>
1999:                             $1,300,000         $1,480,000          -           $980,000        $1,800,000

Year ended December 31,
1998:                               $810,000         $1,294,000          -           $804,000        $1,300,000

Year ended December 31,
1997:                               $520,000           $842,000          -           $552,000          $810,000



</TABLE>




                                       30
<PAGE>





                               PURCHASE AGREEMENT

         THIS  PURCHASE  AGREEMENT  is made and  entered  into  this 14th day of
January,  1999, by and among Waterman  Associates,  Inc., a Delaware corporation
("Seller"),  Data  Transmission  Network  Corporation,  a  Delaware  corporation
("Buyer"),  and Thomas L. Waterman,  an individual  ("Stockholder"),  and Louise
Waterman, the spouse of Stockholder ("Spouse").

                                    RECITALS:

         A. Seller is engaged in the business of creating, assembling, marketing
and  distributing  information  with  respect  to the  gas and  electric  energy
industries (the "Business").

         B. Seller desires to sell substantially all of the assets used by it in
the conduct of the Business, and Buyer desires to acquire such assets.

         C. Stockholder, as the owner of all of the issued and outstanding stock
of  Seller,  joins  in  this  Agreement  to  confirm  certain   representations,
warranties and agreements of Seller herein and to indemnify  Buyer in connection
with certain matters.

         In  consideration  of the mutual  covenants  and  agreements  set forth
herein,  and  for  other  good  and  valuable   consideration  the  receipt  and
sufficiency of which are hereby  acknowledged,  Seller,  Stockholder  and Buyer,
intending to be legally bound, agree as follows:

         1. Purchase and Sale. Buyer agrees to purchase from Seller,  and Seller
agrees to sell to  Buyer,  the  following  assets of the  Business  (except  the
Excluded Assets as defined at the end of this Paragraph 1), to-wit:

         (a)   All of Seller's motor vehicles, equipment,  inventory,  supplies,
               furniture,  trade fixtures,  leasehold improvements,  promotional
               materials,  and  other  tangible  personal  property  used in the
               conduct of the  Business,  including but not limited to the items
               listed on Schedule 1 attached hereto and  incorporated  herein by
               this reference;

         (b)   All of Seller's  intangible  property used in the Business to the
               extent   assignable,   including   but  not  limited  to  rights,
               privileges,   benefits  and   interests   under  all   contracts,
               agreements,  consents and  licenses;  computer  software  used or
               useful in the Business (including but not limited to the software
               listed on Schedule 1 attached hereto); permits or certificates of
               occupancy;  agreements,  leases and arrangements  with respect to
               intangible or tangible property or interests therein;  copyrights
               and  trademarks;  agreements  with suppliers and  customers;  and
               Seller's  rights in and to the trade names "Btu" and "Natural Gas
               Publications, Inc.";

         (c)   All of  Seller's  prepaid  items,  and  unbilled  costs  and fees
               related to the Business;

                                      -31-
<PAGE>

         (d)   All of Seller's  information,  files,  records,  data, plans, and
               recorded  knowledge,   including  customer  and  supplier  lists,
               related to the Business and similar or related data; and

         (e)   All of  Seller's  goodwill  pertaining  to or arising  out of the
               Business.

The term  "Excluded  Assets"  means (i) any records not relating to the Business
and all corporate, accounting and tax records relating to the Business, (ii) all
of Seller's cash and cash equivalents, in hand or in bank accounts, and Seller's
accounts receivable, and (iii) Seller's rights under this Agreement.

         2. Purchase Price. Buyer agrees to pay, and Seller agrees to accept, as
the entire  aggregate  purchase price for the assets of Seller being acquired by
Buyer pursuant to Paragraph 1, the sum of $350,000  (hereinafter  referred to as
the "Purchase  Price").  The Purchase  Price shall be paid by Buyer to Seller in
cash upon the  execution of this  Agreement,  which  payment may include  checks
payable to the order of Seller and the  holders of liens or  security  interests
perfected  in the  assets  being sold  pursuant  to this  Agreement,  in amounts
agreeable to Seller and Buyer. In the event Stockholder  voluntarily  terminates
his  employment  with Buyer or such  employment is terminated by Buyer for cause
within five years of the date of this Agreement,  Seller, Stockholder and Spouse
jointly  and  severally  agree  to pay to  Buyer a refund  of a  portion  of the
Purchase  Price equal to the product of  multiplying  $5,833.33 by the number of
full  calendar  months in such  5-year  period  following  such  termination  of
employment.

         3. Assumption of Liabilities. Buyer shall assume, agree to perform, and
discharge  when  due  only  those  obligations  of  Seller  arising  out  of the
contracts,  leases and agreements listed on Schedules 7(j) and 7(k) which are or
become  assignable  with  respect to the period  from and after the date of this
Agreement or the date such contract,  lease or agreement becomes assignable,  as
the case may be (the Assumed  Liabilities").  Seller and Buyer agree that, other
than the Assumed  Liabilities,  Buyer does not agree to assume and shall have no
responsibility  for any of the debts,  obligations or liabilities of Seller (the
"Excluded  Liabilities"),  all of which shall remain the sole  responsibility of
and shall be paid and  discharged  by Seller as they  become due.  The  Excluded
Liabilities include without limitation all of the following:

         (a)   Any tax  liability or tax  obligation of Seller,  its  directors,
               officers,  shareholders  and  agents  which  has  been  or may be
               asserted by any taxing authority,  including  without  limitation
               any such liability or obligation  arising out of or in connection
               with this Agreement or the transactions contemplated hereby.

         (b)   Any liability or obligation of Seller whether  incurred prior to,
               at or  subsequent  to the date of this  Agreement for any amounts
               due or which may become due to any person or entity who is or has
               been a holder of any debt or equity security of Seller.

                                       2
                                      -32-
<PAGE>

         (c)   Any  trade  account  payable  or note  payable  of  Seller or any
               contract   obligation   of  Seller   (other   than  the   Assumed
               Liabilities)  whether  incurred prior to, at or subsequent to the
               date of this Agreement.

         (d)   Any liability or obligation arising out of any litigation,  suit,
               proceeding,  action, claim or investigation,  at law or in equity
               or in arbitration,  related to Seller's operation of the Business
               prior to the date of this Agreement.

         (e)   Any claim, liability or obligation,  known or unknown, contingent
               or  otherwise,  the  existence  of  which  is  a  breach  of,  or
               inconsistent  with, any  representation,  warranty or covenant of
               Seller set forth in this Agreement.

         (f)   Any liability or obligation specifically stated in this Agreement
               or the Schedules hereto as not to be assumed by Buyer.

         4.  Transfer  Documents.   Concurrently  with  the  execution  of  this
Agreement, Seller shall sell, transfer, assign, convey, and deliver to Buyer the
assets referred to in Paragraph 1 by duly executed titles, warranty bill of sale
and assignment,  and other good and sufficient  instruments of sale, assignment,
conveyance and transfer as shall be required to effectively vest in Buyer all of
Seller's right, title, and interest in and to such assets, free and clear of all
liens,  encumbrances,  security interests,  actions,  claims and equities of any
kind  whatsoever,  following the closing.  Seller agrees to take such actions as
may be necessary to make available for use by Buyer where  appropriate the trade
names  "Btu" and  "Natural  Gas  Publications,  Inc." Buyer shall be entitled to
possession of such assets upon the execution of this Agreement.

         5.  Additional  Documents.  Concurrently  with  the  execution  of this
Agreement,  Seller shall cause its legal counsel to execute and deliver to Buyer
the opinion of such counsel in the form of Exhibit "A" hereto. Concurrently with
the  execution  of this  Agreement,  Stockholder  and Buyer  shall enter into an
employment agreement in the form of Exhibit B hereto.

         6. Obligations to Employees. Seller agrees that it shall be responsible
for any obligations to any of its employees which  heretofore may have arisen or
hereafter  may arise by  reason  of any  services  rendered  by such  employees,
including  but not  limited  to  salaries,  bonuses,  vacation  pay,  retirement
benefits, and other fringe benefits; and Seller hereby agrees to pay all of such
obligations directly to the employees involved when due. Seller agrees timely to
pay  all  payroll  tax,  withholding,  and  unemployment  compensation  payments
required to be made with respect to the  compensation  of such  employees and to
hold Buyer  harmless  therefrom.  Seller shall furnish to Buyer such evidence of
Seller's  compliance  with the provisions of this paragraph as Buyer  reasonably
may request from time to time.

         7.  Representations and Warranties.  Seller and Stockholder jointly and
severally warrant, represent and covenant to and with Buyer:

         (a)   That  Seller has full right and  lawful  authority  to enter into
               this  Agreement and to sell the items of personal  property to be
               acquired  by Buyer  pursuant  to this  Agreement;  that  Seller's

                                       3
                                      -33-
<PAGE>

               performance  of its  obligations  under this  Agreement  will not
               violate  any  agreement,   document,   trust   (constructive   or
               otherwise),  order, judgment or decree to which Seller is a party
               or by  which  it is  bound;  and  that,  upon  the  transfer  and
               assignment of such property to Buyer as  hereinbefore  mentioned,
               Buyer will acquire good and merchantable title thereto,  free and
               clear of any liens,  encumbrances,  security interests,  actions,
               claims, and equities of any kind whatsoever.

         (b)   That  Seller  is the  sole and  lawful  owner of and has good and
               marketable  title to all of the items of personal  property to be
               acquired by Buyer pursuant to this  Agreement,  free and clear of
               any liens, encumbrances, security interests, actions, claims, and
               equities of any kind whatsoever.

         (c)   All material items of tangible  personal  property to be acquired
               by  Buyer  pursuant  to  this  Agreement  are in  good  operating
               condition, subject to normal wear.

         (d)   That  there  are  no  suits,   arbitrations  or  other  legal  or
               governmental  proceedings  pending or threatened  against  Seller
               which might conceivably affect the title to the items of personal
               property to be acquired by Buyer pursuant to this Agreement.

         (e)   That Seller has duly and timely  filed all  federal,  state,  and
               local tax returns of every kind  whatsoever  required to be filed
               on or before the date of this  Agreement and has paid in full the
               tax liability shown on such returns;  that no unpaid deficiencies
               are in existence  which have been asserted  against Seller by any
               official or agency as a result of the filing of such returns; and
               that there is not now pending any examination with respect to any
               such  returns nor does Seller know of any  impending  examination
               with respect to any such returns.

         (f)   That promptly after the date of this  Agreement  Seller shall pay
               all sales and use taxes imposed on or  collectible  by Seller and
               shall furnish to Buyer  evidence  that all of Seller's  sales and
               use taxes have been paid.

         (g)   The property to be acquired by Buyer  pursuant to this  Agreement
               includes all rights and property  necessary to the conduct of the
               Business  by Buyer in the  manner it is  presently  conducted  by
               Seller  and  no  property   excluded  from   Paragraph  1  hereof
               constitutes property or rights material to the Business.

         (h)   There is no fact,  development,  or threatened  development  with
               respect to the markets, products,  customers, vendors, suppliers,
               operations,  assets or prospects of the Business  which are known
               to Seller which would  materially  adversely affect the business,
               operations  or prospects of the Business  considered  as a whole,
               other than such  conditions  as may affect as a whole the economy
               generally.

         (i)   The financial  statements of Seller furnished to Buyer fairly and
               accurately represent the financial operations of the Business for
               the periods covered thereby.

                                       4
                                      -34-
<PAGE>

         (j)   That Seller has listed on Schedule 7(j) all of Seller's contracts
               (oral or written)  with  customers and suppliers of the Business;
               Seller has no other  contracts  (oral or written) with  customers
               and  suppliers  of the  Business.  Seller has  delivered to Buyer
               true,  correct  and  complete  copies  of all  written  contracts
               relating to the Business,  and written  summaries of the terms of
               all oral  contracts  relating  to the  Business,  and all of such
               contracts  are  presently  in  full  force  and  effect  and  are
               assignable to Buyer,  except as otherwise noted on Schedule 7(j).
               Seller  has not  received  any  notices  from  any  customers  or
               suppliers  of the  Business  that  indicate  that they  intend to
               terminate any of such contracts  and,  except as reflected in the
               copies  delivered to Buyer or on Schedule  7(j),  such  contracts
               have not been  amended  and Seller and the other  parties to such
               contracts  are not in default in any material  respect under such
               contracts.  Seller has not been  apprised and does not  currently
               believe or have reason to believe  that any of the  customers  of
               the  Business  plan to  cancel  or reduce  the  volume  under any
               customer contracts.

         (k)   That  Schedule  7(k)  contains a complete list of all of Seller's
               contracts  (oral and written)  relating to the Business,  if any,
               other than the contracts with  customers and suppliers  listed on
               Schedule  7(j).  Seller has delivered to Buyer true,  correct and
               complete copies of all such other written  contracts  relating to
               the Business and written summaries of the terms of all such other
               oral  contracts  relating  to  the  Business,  and  all  of  such
               contracts  are  presently  in  full  force  and  effect  and  are
               assignable,  except as  otherwise  noted on Schedule  7(k),  and,
               except  as  reflected  in the  copies  delivered  to  Buyer or on
               Schedule  7(k),  such  contracts have not been amended and Seller
               and the other parties to such contracts are not in default in any
               material respect under such contracts.

         8.  Indemnification.  Seller and the Stockholder  jointly and severally
agree to  indemnify  Buyer  and to hold  Buyer  harmless  from any and all loss,
damage, cost, or expense incurred or sustained by Buyer by reason of the failure
of any warranty or representation contained in this Agreement to be true or as a
result of Seller's  failure to abide by any  covenant or  agreement  on its part
contained in this Agreement.

         9. Bulk Sales.  Seller has taken any and all actions required under the
bulk  sales  laws  of the  State  of  New  Jersey,  if  any,  applicable  to the
transactions  contemplated  by this  Agreement and will satisfy on or before the
date of this Agreement (or make  arrangements  satisfactory to Buyer in its sole
discretion to satisfy) all creditor claims, excluding Assumed Liabilities.

         10. Survival.  The  representations,  warranties,  and covenants on the
part of Seller and/or Stockholder  contained in this Agreement shall survive the
closing of this Agreement and shall be binding upon Seller and the  Stockholders
and their heirs, legal representatives, successors and assigns.

         11. Payment of Liabilities.  Following the closing, Seller shall pay as
promptly as possible any and all  liabilities of Seller  existing on the date of
this Agreement and to hold Buyer harmless therefrom. Buyer and Seller agree that
Buyer is not  assuming  and shall have no  responsibility  for any of the debts,
obligations,  or  liabilities  of  Seller,  including  but  not  limited  to any

                                       5
                                      -35-
<PAGE>

liabilities or  obligations  of Seller  (whether  fixed,  absolute,  contingent,
known,  unknown,  direct,  indirect,  or otherwise)  whether incurred or accrued
before  or after  the date of this  Agreement,  which in any way  relate  to the
performance or non-performance of, or any other liability or obligation relating
to any service or product furnished or sold by Seller prior to or after the date
of this Agreement, and Seller hereby agrees to hold Buyer harmless from any cost
or  expense  arising  out of or  relating  to any such  debts,  obligations,  or
liabilities;  provided,  however, such indemnification by Seller does not extend
to any Assumed Liabilities.

         12. Transfer Taxes.  Seller shall pay all sales and other similar taxes
imposed on or  collectible  by Seller or Buyer by reason of the  transfer of the
property being acquired by Buyer pursuant to this Agreement.

         13. Noncompete.  For a period of three (3) years after the date of this
Agreement,  neither  Seller,  Stockholder  or any  of  their  affiliates  shall,
directly or indirectly, whether as a shareholder, partner or investor possessing
any  ownership  interest,  or  as  principal,   agent,   employee,   proprietor,
independent  contractor,  consultant,  information  provider  or  in  any  other
capacity:

         (a)   Solicit for itself or himself or others,  or advise or  recommend
               to any  other  person  that  such  person  solicit,  any  current
               customer of the Business, for the purpose of competing with Buyer
               in the Business.

         (b)   Employ,  solicit for  employment,  or advise or  recommend to any
               other person that such person  solicit for  employment  or employ
               any person employed by or under contract with Buyer.

If any court having  jurisdiction  at any time hereafter  shall hold any of such
restrictive  covenants  to be  unenforceable  or  unreasonable  as to its scope,
territory,  or period of time,  and such court in its  judgment or decree  shall
declare or determine  the scope,  territory,  or period of time which such court
deems to be  reasonable,  then such scope,  territory or period of time,  as the
case may be, shall be deemed automatically to have been reduced to that declared
or determined to be reasonable by such court.  Notwithstanding the foregoing, if
any clause or  provision of this  paragraph  shall be  unenforceable,  then such
clause or provision shall be deemed to be deleted from this paragraph, but every
other  clause and  provision  shall  continue  in full force and  effect.  These
covenants are an integral part of the asset purchase transaction contemplated by
this  Agreement  and Buyer would not have  entered  into this  Agreement  in the
absence  of  such  covenants.   Seller  and  Stockholder  acknowledge  that  the
agreements  contained in this  paragraph are reasonable and necessary to protect
the Business being purchased by Buyer and that any breach thereof will result in
irreparable  injury  to Buyer for which  Buyer  has no  adequate  remedy at law.
Seller  and  Stockholder  therefore  agree  that,  in the  event  either of them
breaches  any of the  agreements  contained  in this  paragraph,  Buyer shall be
authorized and entitled to seek from any court of competent  jurisdiction  (i) a
temporary  restraining order, (ii) preliminary and permanent  injunctive relief,
(iii) an  equitable  accounting  of all profits or benefits  arising out of such
breach, and (iv) direct,  incidental,  and consequential  damages resulting from
such breach.  Such rights or remedies shall be cumulative and in addition to all
other rights or remedies to which Buyer may be entitled.

                                       6
                                      -36-
<PAGE>

         14. Entire Agreement. This document constitutes the entire agreement of
the parties with respect to the subject  matter  hereof and may not be modified,
amended, or terminated except by a written agreement  specifically  referring to
this Agreement and signed by all of the parties hereto.

         15. Binding  Agreement.  This Agreement shall be binding upon and inure
to the  benefit  of  the  parties  hereto  and  their  respective  heirs,  legal
representatives, successors and assigns.

         16. Further  Instruments.  The parties hereto shall execute and deliver
such additional  instruments and documents as may be reasonably requested by any
of them in order to carry out the purposes and intent of this  Agreement  and to
fulfill their respective obligations.

         17.  Further  Actions.  Seller agrees to take such actions from time to
time as may in the  reasonable  judgment of Buyer or its counsel be necessary or
advisable to confirm the title of Buyer to any of the items of property acquired
by Buyer from Seller pursuant to this Agreement.

         18. Governing Law. This agreement shall be construed in accordance with
the laws of the State of Nebraska.

         19.  Severability.  In the  event  that  one or more of the  provisions
contained in this  Agreement  shall for any reason be held  invalid,  illegal or
unenforceable in any respect,  such invalidity,  illegality or  unenforceability
shall not affect any of the other provisions contained in this Agreement,  which
provisions shall remain in full force and effect.

         20.  Counterparts.  This  Agreement  may be  executed  in  one or  more
counterparts and by the different parties hereto in separate counterparts,  each
of which shall be deemed an original but all of which together shall  constitute
one and the same instrument.

         21.  Schedules and Exhibits.  All  references to Schedules and Exhibits
herein,  unless otherwise  stated,  means the schedules and exhibits attached to
this Agreement which are hereby incorporated by reference.

         22.  Spouse  Guaranty.   Spouse  shall  guarantee  all  obligations  of
Stockholder   under  this  Agreement  and  any  ancillary   agreement  and  such
obligations shall be the primary liability of Spouse, not secondary liability.

         23.  Nonassignable  Rights.  Seller and Stockholder  agree to use their
best  efforts  after  closing to obtain the consent of the other  parties to the
contracts  listed on Schedules  7(j) and (k) which are  nonassignable.  Anything
contained  herein to the  contrary  notwithstanding,  this  Agreement  shall not
constitute an agreement to assign any contract,  order,  commitment,  license or
right if an assignment or attempted  assignment  thereof  without the consent of
the other party thereto would constitute a breach thereof or in any material way
affect the rights of Seller  thereunder  or  hereunder  unless  such  consent is
obtained.  If any such consent is not  obtained,  or if an attempted  assignment
would be ineffective and would materially affect Seller's rights thereunder,  so

                                       7
                                      -37-
<PAGE>

that Buyer would not in fact  receive  all such  rights,  the  parties  agree to
cooperate in any reasonable arrangement designed to assure that Buyer shall have
all the benefits, rights,  obligations and duties under such contracts,  orders,
commitments,  licenses and rights,  without further  consideration being paid by
Buyer.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the day and year first above written.

                                      DATA TRANSMISSION NETWORK
                                      CORPORATION, a Delaware corporation


                                      By:/s/ Greg T. Sloma
                                         ---------------------------
                                         Greg T. Sloma
                                      Title: President and COO


                                      WATERMAN ASSOCIATES, INC., a Delaware
                                      corporation


                                      By:/s/ Thomas L. Waterman
                                         ---------------------------
                                         Thomas L. Waterman, President


                                      By: /s/ Louise Waterman
                                          ----------------------------
                                          Louise Waterman

                                       8
                                      -38-
<PAGE>

                                   EXHIBIT "A"

                                January __, 1999

Data Transmission Network Corporation
9110 West Dodge Road, Suite 200
Omaha, NE 68114

ATTN:    Greg T. Sloma, President

Dear Sir:

         I have acted as  corporate  counsel for  Waterman  Associates,  Inc., a
Delaware   corporation   (the   "Company")  in  connection   with  the  sale  of
substantially  all of the  Company's  assets  pursuant to the  provisions of the
Purchase Agreement dated January ___, 1999, (the "Agreement"),  by and among the
Company,   its  sole  shareholder,   the  sole  shareholder's  spouse  and  Data
Transmission  Network Corporation (the "Buyer").  This opinion is being rendered
to you pursuant to Paragraph 5 of the Agreement.  Capitalized  terms used herein
and not  otherwise  defined shall have the same meaning give to such terms as in
the Agreement.

         In connection with this opinion,  I have examined  originals or copies,
certified  or  otherwise  identified  to my  satisfaction,  of  such  documents,
corporate records, certificates, including certificates of public officials, and
other instruments that I have deemed necessary or advisable for purposes of this
opinion,  including those relating to the authorization,  execution and delivery
of the Agreement.  Without  limitation,  I reviewed the following  documents and
agreements:

         (i)   the Agreement;

         (ii)  the Certificate of  Incorporation  of the Company as certified by
               the Secretary of State of the State of Delaware (the "Charter");

         (iii) the Bylaws of the  Company as adopted by the  Company on April 1,
               1993, and certified by the  President/Secretary of the Company on
               December 28, 1998 (the "Bylaws");

         (iv)  the Bill of  Sale,  Assignment  and  Assumption  Agreement  dated
               January  ____,  1999,  executed by the Company and the Buyer (the
               "Bill of Sale"); and

         (iv)  actions taken by the  shareholders  and Board of Directors of the
               Company  to  authorize  the  transactions   contemplated  by  the
               Agreement.

         In such  examination and review,  I have assumed the genuineness of all
signatures,  the legal  capacity of natural  persons,  the  authenticity  of all
documents submitted to us as originals,  the conformity to original documents of
all  documents  submitted  to us as  certified  or  photostatic  copies  and the
authenticity  of the originals of such copies.  As to any facts  material to the

                                       9
                                      -39-
<PAGE>

opinions hereafter expressed which I did not independently  establish or verify,
I  have  relied  without   investigation  upon   certificates,   statements  and
representations  of  representatives  of the  Company.  During  the course of my
discussions with such  representatives  and my review of the documents described
above in  connection  with the  preparation  of these  opinions,  no facts  were
disclosed to me that caused me to conclude that any such certificate,  statement
or representation is untrue. In making my examination of the documents  executed
by entities  other than the Company,  I have assumed that each such other entity
had the power to enter into and perform all its  obligations  thereunder and the
due  authorization  of, and the due execution and delivery of, such documents by
each such entity.

         As  used  in  this  opinion,  the  expression  "to my  knowledge"  with
reference to matters of facts means that after an examination of documents in my
files and  considering  my actual  knowledge of legal matters I have handled for
the Company, without independent investigation or inquiry as to factual matters,
but not including any constructive or imputed notice of any information,  I find
no reason to believe that the opinions expressed herein are factually incorrect.
Beyond that, I have made no independent factual investigation for the purpose of
rendering an opinion with respect to such matters.

         Based upon and  subject to the  foregoing  and  subject to the  further
assumptions,  limitations,  qualifications and exceptions set forth herein, I am
of the opinion that:

         1. The Company is a corporation duly organized, validly existing and in
good  standing  under the laws of the State of  Delaware.  The  Company  has the
corporate  power and  authority  required to conduct the Business and to own and
use the  properties  currently  owned  and used by it.  The  Company  is in good
standing with the State of New Jersey, its state of operation.

         2. The Company has the corporate power and the authority to execute and
deliver the Agreement and to perform its respective obligations thereunder.  The
execution  and delivery of the Agreement by the Company and the  performance  of
its  obligations  thereunder  have  been  duly  and  validly  authorized  by all
necessary   corporate  action  on  the  part  of  the  Board  of  Directors  and
stockholders  of the Company.  The Agreement has been duly and validly  executed
and  delivered  by the  Company  and  constitutes  a legal,  valid  and  binding
obligation of the Company,  enforceable in accordance with its terms, subject to
the   effect  of  (i)   applicable   bankruptcy,   insolvency,   reorganization,
arrangement,  moratorium,  fraudulent  conveyance  and  other  similar  laws  or
judicial  decisions  affecting the validity and enforcement of creditors' rights
generally  and (ii) the  discretion  of any court of competent  jurisdiction  in
awarding equitable remedies, including without limitation,  specific performance
or injunctive relief, and the effect of general principles of equity embodied in
New Jersey statutes and common law.

         3.  Neither  the  execution  and  delivery  of the  Agreement  nor  the
consummation of the  transactions  contemplated  thereby,  (i) conflicts with or
violates any provision of the Charter or Bylaws, (ii) to my knowledge,  requires
on the part of the Company any filing with, or permit, authorization, consent or
approval  of, any  federal  or state  governmental  agency or entity,  except as
specified in the Agreement,  (iii) to my knowledge  conflicts with, results in a
breach  of,  constitutes  (with or  without  notice  or lapse of time or both) a

                                       10
                                      -40-
<PAGE>

default  under,  or requires any notice,  consent or waiver under any  contract,
lease, license, franchise, permit, indenture, agreement or mortgage for borrowed
money or other agreement to which the Company is a party or by which the Company
is bound or to which any of its assets is subject, (iv) to my knowledge violates
any statute,  rule or  regulation,  or (v) to my knowledge,  violates any order,
writ, injunction,  decree, statute, rule or regulation applicable to the Company
or any properties or assets of the Company.

         4. To my knowledge,  the Company (i) is not subject to any  unsatisfied
judgment, order, decree, stipulation or injunction and (ii) is not a party to or
threatened  to be made a  party  to any  complaint,  action,  suit,  proceeding,
hearing or investigation of any court or  administrative  agency of any federal,
state, local or foreign jurisdiction or before any arbitrator.

         5. To my knowledge, all authorizations, consents and approvals, if any,
of all federal,  state and local governmental  agencies and entities required in
order to  permit  consummation  by the  Company  of its  obligations  under  the
Agreement have been obtained.

         6.  Assuming  payment of the Purchase  Price by the Buyer,  the Bill of
Sale is sufficient to transfer all of the Company's right, title and interest in
the  properties  and  assets  of the  Company  to be  acquired  by the  Buyer as
contemplated by the Agreement.

         This opinion relates solely to the laws of the State of New Jersey, the
corporate  laws of the State of  Delaware  and  applicable  federal  laws of the
United  States,  and I  express  no  opinion  with  respect  to  the  effect  or
applicability  of the laws of other  jurisdictions.  I have  assumed that and my
opinions  expressed in paragraph 2 above are based upon my  assumption  that the
internal  laws of the State of New Jersey,  the  corporate  laws of the State of
Delaware and federal laws, as applicable, govern the provisions of the Agreement
and the transactions contemplated thereby.

         I am opining only as to the matters  expressly  set forth herein and no
opinion should be inferred as to other matters.  The opinions  expressed  herein
are  furnished  by me, as counsel for the  Company,  solely for your  benefit in
connection  with the  transactions  contemplated  by the  Agreement and upon the
understanding  that I am not assuming any  responsibility to any other person or
entity  whatsoever.  This  opinion may not be quoted or relied upon by any other
person or entity or used for any other purpose without my written consent.  This
opinion is rendered as of the date hereof and I do not  undertake  to advise you
of  matters  which  occur  subsequent  to the date  hereof  and that  affect the
opinions expressed herein.

                                                      Sincerely,



                                                      Frank C. Capozza, Esq.
                                                      A Professional Corporation


                                       11
                                      -41-
<PAGE>



                                   EXHIBIT "B"

                              EMPLOYMENT AGREEMENT

         This Employment  Agreement is made and entered into as of the _____ day
of  ____________,  199__,  between DATA  TRANSMISSION  NETWORK  CORPORATION (the
"Company"), a Delaware corporation, and THOMAS L. WATERMAN (the "Employee").

                                                        * * *
         WHEREAS, the Company desires to employ the Employee; and

         WHEREAS, the Employee desires to accept such employment.

         NOW,  THEREFORE,  in  consideration  of the foregoing  recitals and the
respective  covenants and agreements of the parties  contained in this document,
the Company and the Employee agree as follows:

         1.  Employment and Duties.  The Company hereby employs the Employee for
work in connection with the natural gas and electrical  product offerings by the
Company (the "Products") with such duties and  responsibilities  as the Board of
Directors of the Company (the  "Board") or a person (other than the Employee) so
authorized by the Board from time to time may assign to the Employee.

         2. Term.  The term of this  agreement  shall  begin on the date of this
agreement and shall continue  thereafter for a period of ten (10) years,  unless
terminated earlier in accordance with this agreement.  The Employee shall remain
an employee  at-will.  Either the  Employee or the  Company  may  terminate  the
employment  relationship at any time, with or without any reason, subject to the
other  provisions  of this  agreement.  Each party shall provide the other party
with sixty (60) days advance written notice of his or its intention to terminate
this agreement,  except in the event of the termination of Employee's employment
pursuant to any of the first three sentences of Section 11 of this agreement.

         3. Place of Employment. During the term of this agreement, the Employee
will perform his duties at the Company's offices in Red Bank, New Jersey, and he
will not be required to relocate or transfer his principal  residence during the
term of this agreement.

         4.  Base  Salary.  For all  services  to be  rendered  by the  Employee
pursuant to this  agreement,  the Company agrees to pay the Employee  during the
term of this  agreement a base  salary (the "Base  Salary") at an annual rate of
$100,000  through  December  31,  1999,  and at an annual  rate of not less than
$100,000  after  December  31, 1999;  provided,  that the Base Salary as then in
effect  shall be  increased  as of  January 1 of each  calendar  year after 1999
during  the term of this  agreement  by at least  the same  percentage  that the
United States Department of Labor Consumer Price Index (All Items) for All Urban
Consumers,  1982-84=100  ("CPI-U") for the November  immediately  preceding such
January 1 increased over the CPI-U for the November one year earlier.  The Board
shall review the Base Salary at least  annually  for the purpose of  determining
whether a Base  Salary  increase  greater  than such  CPI-U  increase  should be

                                       12
                                      -42-
<PAGE>

granted to the Employee for a particular  12-month period. The Employee's annual
incentive  bonus  provided  for in  Section  5 and all  other  compensation  and
benefits  to which the  Employee  is or may  become  entitled  pursuant  to this
agreement shall be in addition to the Base Salary. The Base Salary shall be paid
in periodic  installments  in  accordance  with the  Company's  regular  payroll
practices.

         5. Annual  Incentive  Bonus.  In addition to the Employee's Base Salary
and any other benefits to which the Employee is entitled  under this  agreement,
the Employee  also shall be entitled to receive an annual  incentive  bonus (the
"Bonus")  from the Company of one percent  (1%) of the amount,  if any, by which
the revenues  received  from the Products by the Company for such  calendar year
(which  revenues will  represent only the portion of the revenues of the DTNergy
division  of the  Company  directly  attributable  to the  Products)  exceed the
revenues  from the Products for the calendar year ended  December 31, 1998.  The
Bonus shall be paid to the Employee for each full  calendar year during the term
of this  agreement  promptly  after the revenues from the Products for such year
have been computed by the Company.

         6. Expenses.  During the term of this agreement,  the Employee shall be
entitled to prompt  reimbursement by the Company of all reasonable  ordinary and
necessary travel, entertainment, and other expenses incurred by the Employee (in
accordance  with the policies and procedures  established by the Company for its
employees)  in the  performance  of his duties and  responsibilities  under this
agreement;  provided, that the Employee shall properly account for such expenses
in accordance with Company policies and procedures.

         7. Other  Benefits.  During the term of this  agreement,  the  Employee
shall be entitled to all of the fringe  benefits which are provided to employees
of the Company generally (such as but not limited to the Company's 401(k) plan),
but  excluding  the Company's  discretionary  bonus plan,  stock option plan and
similar programs.

         8.  Vacations  and  Holidays.  The  Employee  shall be entitled to paid
vacations and holidays in accordance with the Company's  policies in effect from
time to time for comparable employees.

         9. Other Activities. The Employee shall devote substantially all of his
working  time and efforts  during the  Company's  normal  business  hours to the
business affairs of the Company and to the diligent and faithful  performance of
the duties and  responsibilities  assigned to him  pursuant  to this  agreement,
except for vacations and holidays.

         10.  Nondisclosure.  During the term of this agreement and  thereafter,
the  Employee  shall not,  without the prior  written  consent of the Board or a
person (other than the Employee) so authorized by the Board, disclose or use for
any purpose (except in the course of his employment  under this agreement and in
furtherance  of the  business  of the  Company or any of its  subsidiaries)  any
confidential  information,  trade secrets, or proprietary data of the Company or
any  of  its  subsidiaries  (collectively,   for  purposes  of  this  agreement,
"Confidential  Information");  provided,  however, that Confidential Information
shall  not  include  any  information  then  known  generally  to the  public or
ascertainable  from public or published  information  (other than as a result of

                                       13
                                      -43-
<PAGE>

unauthorized  disclosure  by the  Employee)  or any  information  of a type  not
otherwise  considered  confidential by persons engaged in the same business or a
business  similar to that conducted by the Company or its  subsidiaries,  as the
case may be.

         11. Termination.  The Employee's  employment under this agreement shall
terminate  upon his  death.  If the  Employee  becomes  incapable  by  reason of
physical  injury,  disease,  or mental illness of  substantially  performing his
duties  and  responsibilities  under  this  agreement  for a  period  of six (6)
continuous  months  or more,  then the  Company  may  terminate  the  Employee's
employment  under this agreement.  The Company also may terminate the Employee's
employment  under  this  agreement  for Cause;  however,  for  purposes  of this
agreement, "Cause" shall mean only (i) confession or conviction of theft, fraud,
embezzlement,  or any other  crime  involving  dishonesty  with  respect  to the
Company or any parent,  subsidiary,  or affiliate of the Company,  (ii) material
violation of the provisions of any confidentiality  agreement or non-competition
agreement in force between the Company or DTN and the Employee,  (iii)  habitual
and material  negligence by the Employee in the  performance of his duties under
or pursuant to this agreement, (iv) material non-compliance by the Employee with
his obligations  under Section 9 (after having  received  written notice thereof
and a right to cure)  or (v)  failure  of the  Employee  to abide by the  lawful
directives  of the  Board  that  are not  inconsistent  with  the  terms of this
Agreement. In the event of the termination of the Employee's employment pursuant
to any of the  first  three  sentences  of this  Section  11 or if the  Employee
voluntarily  terminates  employment  with the Company,  the Employee (or, in the
event of the  Employee's  death,  his  estate)  shall be entitled to retain that
portion of the Base Salary  earned by the Employee up to the  effective  date of
such termination, provided that during any period when the Employee is incapable
by reason of  physical  injury,  disease,  or mental  illness  of  substantially
performing his duties and responsibilities under this agreement, the Company may
subtract  from such Base Salary the amount of any  payments  which the  Employee
receives from Company-sponsored disability insurance as a reimbursement for lost
earnings or wages relating to such period.

         12. Termination Without Cause. If the Company terminates the employment
of the Employee  for any reason other than those  referred to in Section 11, the
Company shall pay the Employee, upon the effective date of such termination, the
then current  present value of all remaining  payments of Base Salary  (computed
assuming  no further  increase in the CPI-U) and  Bonuses  (computed  assuming a
Bonus each year equal to the Bonus for the year preceding the termination)  that
would  have  been  paid  hereunder  but for such  termination,  less  applicable
employee tax withholdings and deductions.  For purposes of the foregoing present
value determination,  a discount rate equal to the prime rate on corporate loans
at large U.S.  money  center  commercial  banks as quoted in the  "Money  Rates"
column of the Wall Street Journal on such  effective date shall be used.  Except
as  provided in Sections 11 and 12 of this  agreement,  the  Employee  shall not
receive  any  additional  severance  pay upon  his  termination  of  employment,
regardless of the Company's  severance policy for its employees  generally.  The
Employee  agrees to accept the payments  provided for in this Section 12 as full
and complete  liquidated damages for any breach of this agreement resulting from
the actual or constructive  termination of the Employee's  employment under this
agreement for a reason other than cause or the  Employee's  death or disability;
and the Employee  shall not have and hereby  waives and  relinquishes  any other
rights or claims in respect of such breach.

                                       14
                                      -44-
<PAGE>

         13.  Successors  and Assigns.  This agreement and all rights under this
agreement shall be binding upon,  inure to the benefit of, and be enforceable by
the  parties  hereto and their  respective  personal  or legal  representatives,
executors, administrators,  heirs, distributees, devisees, legatees, successors,
and assigns. This agreement is personal in nature, and neither of the parties to
this  agreement  shall,  without  the  written  consent of the other,  assign or
transfer this  agreement or any right or obligation  under this agreement to any
other person or entity.

         14.  Notices.  For  purposes  of  this  agreement,  notices  and  other
communications  provided  for in this  agreement  shall be deemed to be properly
given if delivered  personally or sent by United States  certified mail,  return
receipt requested, postage prepaid, addressed as follows:

         If to the Employee:               Thomas L. Waterman
                                           65 Mechanic Street
                                           Red Bank, NJ 07701

         With a Copy to:                   Frank C. Capozza
                                           A Professional Corporation
                                           1120 Market Tower
                                           10 West Market Street
                                           Indianapolis, IN 46204

         If to the Company:                Data Transmission Network Corporation
                                           9110 West Dodge Road, Suite 200
                                           Omaha, NE 68114
                                           Attn:  Greg T. Sloma, President

or to such other  address as either party may have  furnished to the other party
in  writing  in  accordance   with  this   paragraph.   Such  notices  or  other
communications shall be effective only upon receipt.

         15.  Non-Solicitation of Employees.  For a period of one (1) year after
the effective date of the  termination of the Employee's  employment  under this
agreement  for any reason,  whether  voluntarily  or  involuntarily  and with or
without  cause,  without the prior  written  consent of the Company the Employee
agrees (i) not to directly or indirectly employ, solicit for employment,  assist
any  other  person in  employing  or  soliciting  for  employment,  or advise or
recommend  to any other  person  that such other  person  employ or solicit  for
employment  any  person  who then is an  employee  of the  Company or any of the
subsidiaries  of the Company and (ii) not to recommend  to any then  employee of
the Company or any of the  subsidiaries  of the Company that such employee leave
the employ of such employer.

         16.   Post-Termination   Noncompetition.   Because   the   Confidential
Information  known to or developed by the Employee  during his employment by the
Company  encompasses  at the highest  level  information  concerning  the plans,
strategies,   services,  operations,  and  existing  and  prospective  customers
pertaining  to the  Products and could not  practically  be  disregarded  by the
Employee,  the Employee acknowledges that his provision of information and other

                                       15
                                      -45-
<PAGE>

services  to a  competitor  of the  Company  soon after the  termination  of the
Employee's  employment by the Company would inevitably  result in the use of the
Confidential  Information  by the Employee in his  performance of such services,
even if the  Employee  were to use his best  efforts  to  avoid  such use of the
Confidential  Information.  To prevent such use of the Confidential  Information
and the resulting unfair competition and wrongful  appropriation of the goodwill
and other valuable  proprietary  interests of the Company,  the Employee  agrees
that for a period of one (1) year after the termination of his employment by the
Company for any reason, whether voluntarily or involuntarily and with or without
cause, the Employee will not, directly or indirectly:

         (a)      engage, whether as an employee, agent, consultant, independent
                  contractor,  owner, partner, member,  information provider, or
                  otherwise,  in a business  activity  which then  competes in a
                  material  way with the  Products  then  being  offered  by the
                  Company;

         (b)      solicit or  recommend  to any other  person  that such  period
                  solicit any then customer of the Company,  which customer also
                  was a customer  of the  Company at any time during the one (1)
                  year  period  prior  to  the  termination  of  the  Employee's
                  employment  by the Company,  for the purpose of obtaining  the
                  business of such customer in competition with the Products; or

         (c)      induce or attempt to induce any then  customer or  prospective
                  customer  of the  Products  to  terminate  or not  commence  a
                  business relationship with the Company.

The restrictions  contained in this Section 16 are separate from the restrictive
covenants  contained  in the  Purchase  Agreement  among the  Company,  Waterman
Associates,  Inc., Louise Waterman and the Employee,  and such 1-year period may
run concurrently with the period of restriction in such Purchase Agreement.  The
Company and the Employee  acknowledge and agree that the restrictions  contained
in this Section 16 are both  reasonable  and necessary in view of the Employee's
position  with the Company and that the  Employee's  compensation  and  benefits
under this agreement are sufficient  consideration for the Employee's acceptance
of such restrictions. Nevertheless, if any of the restrictions contained in this
Section  16 are found by a court  having  jurisdiction  to be  unreasonable,  or
excessively  broad as to geographic  area or time,  or otherwise  unenforceable,
then the parties  intend that the  restrictions  contained in this Section 16 be
modified  by such  court  so as to be  reasonable  and  enforceable  and,  as so
modified by the court,  be fully enforced.  Nothing  contained in this paragraph
shall be  construed  to preclude  the  investment  by the Employee of any of his
assets in any  publicly  owned  entity so long as the  Employee has no direct or
indirect involvement in the business of such entity and owns less than 2% of the
voting equity securities of such entity.

         17. Injunctive Relief. The Employee  acknowledges that his violation of
the provisions and restrictions contained in Sections 10, 15, and 16 could cause
significant  injury to the Company for which the Company  would have no adequate
remedy  at law.  Accordingly,  the  Employee  agrees  that the  Company  will be
entitled,  in  addition  to any  other  rights  and  remedies  that  then may be
available to the Company,  to seek and obtain  injunctive  relief to prevent any
breach or potential breach of any of the provisions and  restrictions  contained
in Sections 10, 15, or 16.

                                       16
                                      -46-
<PAGE>

         18.  Miscellaneous.  No  provision of this  agreement  may be modified,
waived, or discharged unless such waiver,  modification,  or discharge is agreed
to in writing and is signed by the Employee and an officer of the Company (other
than the Employee) so authorized by the Board. No waiver by either party to this
agreement at any time of any breach by the other party of, or  compliance by the
other party with,  any condition or provision of this  agreement to be performed
by the other  party  shall be deemed to be a waiver  of  similar  or  dissimilar
provisions  or  conditions  at the same or any  prior  or  subsequent  time.  No
agreements  or  representations,  oral or  otherwise,  express or implied,  with
respect to the subject  matter of this  agreement have been made by either party
that are not expressly set forth in this agreement.

         19. Validity.  The invalidity or  unenforceability  of any provision or
provisions of this agreement shall not affect the validity or  enforceability of
any other  provision of this  agreement,  which other  provision shall remain in
full force and effect; nor shall the invalidity or unenforceability of a portion
of any provision of this agreement affect the validity or  enforceability of the
balance of such provision. The provisions of this agreement are severable.

         20.  Counterparts.  This  document  may be  executed  in  one  or  more
counterparts,  each of which shall be deemed to be an original  and all of which
together shall constitute a single agreement.

         21. Headings. The headings of the paragraphs contained in this document
are for  reference  purposes only and shall not in any way affect the meaning or
interpretation of any provision of this agreement.

         22.  Applicable  Law. This agreement shall be governed by and construed
in  accordance  with the internal  substantive  laws,  and not the choice of law
rules, of the State of Nebraska.

         23. Arbitration.  In the event a dispute shall arise as to the parties'
respective rights, duties and obligations under this agreement,  or in the event
of a  claim  for  breach  of  this  agreement  by  either  party  (collectively,
"Dispute"),  the parties agree to utilize arbitration as the exclusive means for
resolution  of the Dispute.  With respect to any such  Dispute,  the  arbitrator
shall be selected  and the  arbitration  conducted in  accordance  with the most
recent  Employment  Dispute   Resolution  Rules  of  the  American   Arbitration
Association.  The arbitration  proceeding shall be held in Omaha,  Nebraska,  or
such other location as may be acceptable to the parties.  The  arbitrator  shall
make  written  findings,  including  any  award,  which  shall be  signed by the
arbitrator.  The award shall be deemed final and binding  thirty (30) days after
the award is made.  The parties agree to abide by and perform any award rendered
by the  arbitrator.  The  arbitrator  shall be bound by the  provisions  of this
agreement in determining  any award.  The parties agree that the proceedings and
any decision by the arbitrator, including the amount of any award, shall be kept
confidential  and not disclosed to any person other than the parties,  witnesses
and their counsel (who also must each agree to maintain the  confidentiality  of
the proceedings and any decision). A party may enforce any award in any court of
competent jurisdiction.

                                       17
                                      -47-
<PAGE>

         IN WITNESS  WHEREOF,  the Company and the Employee  have  executed this
agreement on the day and year first above written.

                                       DATA  TRANSMISSION  NETWORK
                                       CORPORATION, a Delaware corporation



                                       By:/s/ Greg T. Sloma
                                          -----------------------------
                                          Greg T. Sloma
                                       Title: President and COO



                                        /s/ Thomas L. Waterman
                                        ---------------------------------------
                                        Thomas L. Waterman

                                       18
                                      -48-
<PAGE>



                                   SCHEDULE 1

                             List of Certain Assets

"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities and Exchange Commission upon request."

                                       19
                                      -49-
<PAGE>



                                  SCHEDULE 7(j)

                         Customer and Supplier Contracts

"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities and Exchange Commission upon request."

                                       20
                                      -50-
<PAGE>




                                  SCHEDULE 7(k)

                             List of Other Contracts

Ms. Rainey Thynne (Subcontractor)

                                       21
                                      -51-


                            STOCK PURCHASE AGREEMENT

         This STOCK PURCHASE  AGREEMENT (the "Agreement")  dated as of March 17,
1999, by and among Data Transmission Network Corporation, a Delaware corporation
("DTN"), DTN Acquisition,  Inc., a Nebraska corporation ("Buyer"),  Asset Growth
Corporation,   a  Delaware  corporation  (the  "Company"),   Marcia  C.  Kennedy
("Kennedy"),  Scott L. Brown  ("Brown"),  and the  persons  listed in Schedule 1
attached hereto (collectively the "Sellers" and individually a "Seller").

                                    RECITALS:

         WHEREAS,  each Seller is the owner,  beneficially and of record, of the
number of shares of the Common  Stock of the Company set forth  opposite  his or
her name on Schedule 1 attached  hereto,  and  Sellers  are the  owners,  in the
aggregate, of all of the issued and outstanding capital stock of the Company;

         WHEREAS, Buyer wishes to purchase from Sellers and Sellers wish to sell
to Buyer all of the issued and outstanding capital stock of the Company upon and
subject to the terms and conditions set forth herein;

         WHEREAS, DTN, Kennedy,  Brown and the Company are all of the parties to
that  certain  Purchase  Agreement  dated  October 14,  1998,  as amended by the
Amendment to Agreements  (the  "Amendment")  dated  January 1, 1999,  among DTN,
Buyer, Kennedy,  Brown and the Company (such Purchase Agreement,  as modified by
the Amendment, being referred to herein as the "Master Agreement");

         WHEREAS,  Buyer and the Company are all of the parties to that  certain
Management  Agreement  dated  October 14, 1998, as modified by the Amendment (as
amended,  the  "Management  Agreement")  providing for the Company to manage for
Buyer the business conducted by Paragon Software,  Inc., an Illinois corporation
("Paragon"); and

         WHEREAS,  the parties hereto wish to terminate the Master Agreement and
the Management Agreement upon the consummation of the transactions  contemplated
by this Agreement;

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
representations,  warranties and agreements herein contained,  Buyer and Sellers
agree as follows:

                                    ARTICLE I

                                 SALE OF SHARES

         1.01 Sale of Shares. Subject to the terms and conditions herein stated,
each Seller agrees to sell, assign, transfer and deliver to Buyer on the Closing
Date (as  defined  herein),  free and  clear of any and all  liens,  claims  and
encumbrances,  good,  valid and marketable title to all of the shares of capital
stock of the Company owned by such Seller as set forth  opposite his or her name
on  Schedule  1 (all of such  shares  to be sold to Buyer  hereunder  being  the
"Shares"),  and Buyer  agrees to purchase the Shares from Sellers on the Closing
Date. The certificates  representing the Shares shall be duly endorsed in blank,
or accompanied by stock powers duly executed in blank, by Sellers.

                                      -52-
<PAGE>

         1.02  Price.  In full  consideration  for the  purchase by Buyer of the
Shares,  Buyer  shall  at the  Closing  pay to the  Sellers  in good  funds  the
aggregate  amount of $3,744,183 (the "Cash Purchase  Price").  Each Seller shall
receive that  percentage of the Cash Purchase  Price as set forth  opposite such
Seller's  name on  Schedule  1 attached  hereto.  As  additional  consideration,
effective  immediately  prior to the Closing,  DTN hereby  forgives all advances
paid to the Company pursuant to Section 3(b) of the Management Agreement.

         1.03  Closing.  The sale  referred to in Section  1.01 (the  "Closing")
shall  take place at the  office of DTN in Omaha,  Nebraska,  on the date of the
execution of this  Agreement,  or at such later date as the parties hereto shall
by written  instrument  designate.  Such time and date are herein referred to as
the "Closing Date".

                                   ARTICLE II

                    REPRESENTATIONS AND WARRANTIES OF SELLERS

         As of the date hereof (except as otherwise  specified herein) and as of
the Closing Date,  each Seller jointly and severally  represents and warrants to
Buyer as follows:

         2.01 Organization and  Qualification.  At the Closing Date, the Company
will be a  corporation  duly  organized,  validly  existing and in good standing
under the laws of Delaware and will have all  requisite  power and  authority to
own,  lease and operate its properties and to carry on its business as now being
conducted.  Texas is the only  jurisdiction in which the Company is qualified or
licensed to do business.  Buyer has heretofore received true and complete copies
of the  Certificate  of  Incorporation  and  By-laws (or other  similar  charter
documents), as currently in effect, of the Company.

         2.02  Capitalization;  Title to Stock. The authorized  capital stock of
the Company consists of (i) 75,000,000  shares of common stock,  $0.01 par value
per share (the  "Common  Stock"),  of which the  Shares  are the only  shares of
Common Stock issued and  outstanding  as of the date hereof and (ii)  10,000,000
shares of  preferred  stock,  $3.00 par value per share,  of which no shares are
outstanding.  Sellers  are the record  owners of all the  Company's  outstanding
shares of Common  Stock.  All of the  outstanding  shares of Common Stock of the
Company  are duly  authorized,  validly  issued,  fully paid and  nonassessable.
Except for the sale to Buyer as  contemplated  by this  Agreement,  there are no
outstanding  options,  warrants,  calls  or other  rights  to  subscribe  for or
purchase or acquire from the Company or Sellers or any affiliate of the Company,
or any plans,  contracts or  commitments  providing  for the issuance of, or the
granting of rights to acquire  (i) any capital  stock of the Company or (ii) any
securities  convertible  into or  exchangeable  for  any  capital  stock  of the
Company.  The Company is not  contractually  obligated to repurchase,  redeem or
otherwise  acquire any of its outstanding  shares of capital stock.  Each Seller
represents and warrants only with respect to that Seller and not with respect to
any other Seller,  that such Seller (i) has good,  valid and  marketable  title,
beneficially and of record, to the respective Shares set forth opposite his, her
or its  name on  Schedule  1  attached  hereto,  free and  clear  of all  liens,
encumbrances  and rights of others,  (ii) is in rightful  possession of duly and
validly authorized and issued certificates  evidencing his, her or its ownership
of record of such Shares,  and (iii) at the Closing Date,  will have full right,
power  and  authority  to sell,  transfer,  convey  and  deliver  to  Buyer,  in
accordance with the terms of this Agreement,  good, valid and marketable  title,
beneficially  and of record,  to all of such Shares being sold by such Seller to
Buyer hereunder, free and clear of all liens, encumbrances and rights of others.

                                       2
                                      -53-
<PAGE>

         2.03 Subsidiaries. The Company has no subsidiaries. Except as set forth
on Schedule 2.03, there is no corporation,  partnership,  joint venture or other
person or entity in which the Company, directly or indirectly,  has, or pursuant
to any  agreement  or  agreements  has or will have,  a right or  obligation  to
acquire or make by any means,  an interest  or  investment  (including,  without
limitation,  equity  ownership,   proprietary  interest,  loans,  guarantees  of
indebtedness and other similar obligations).

         2.04  Authority  Relative  to the  Transactions  Contemplated  by  this
Agreement.  At the Closing Date, each Seller will have full power,  capacity and
authority  (corporate or otherwise) to execute and deliver this Agreement and to
consummate  the  transactions  contemplated  hereby.  At the Closing  Date,  the
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions  contemplated  hereby will have been duly and validly authorized on
behalf of all Sellers and no other  proceedings on behalf of Sellers are or will
be  necessary  to approve  and  authorize  the  execution  and  delivery of this
Agreement and the consummation of the  transactions  contemplated  hereby.  This
Agreement  has been duly and validly  executed  and  delivered  by Sellers,  and
(assuming the valid  execution  and delivery of this  Agreement by Buyer) at the
Closing Date will  constitute a legal,  valid and binding  agreement of Sellers,
enforceable against Sellers in accordance with its terms, subject to bankruptcy,
insolvency,  reorganization,  moratorium and other laws of general applicability
relating to or affecting creditors' rights and to general principles of equity.

         2.05  Consents  and  Approval;  No  Violation.  Except  as set forth on
Schedule 2.05,  neither the execution and delivery of this Agreement by Sellers,
nor the consummation of the transactions  contemplated hereby, nor compliance by
any Seller  with the  provisions  hereof,  will (i)  require  the Company or any
Seller to file or register with,  notify,  or obtain any permit,  authorization,
consent or approval of, any  governmental  or  regulatory  authority  except for
those  requirements  which become  applicable  to the Company as a result of the
specific  regulatory  status  of Buyer or as a result of any  other  facts  that
specifically relate to the business  activities in which Buyer is engaged;  (ii)
conflict  with or breach any  provision  of the  Certificate  of  Incorporation,
By-laws or trust agreement (or other similar governing documents) of the Company
or any Seller;  (iii)  violate or breach a provision of, or constitute a default
(or an event  which,  with  notice or lapse of time or both would  constitute  a
default)  under,  any of the terms,  covenants,  conditions or provisions of any
note, bond, mortgage,  indenture,  deed of trust,  license,  franchise,  permit,
lease,  contract,  agreement or other  instrument,  commitment  or obligation to
which the  Company  or any  Seller is a party,  or by which the  Company  or any
Seller or any of their  respective  properties  or assets may be bound;  or (iv)
violate  any  order,  writ,  injunction,  decree  or  judgment  of any  court or
governmental  authority  applicable to the Company or any Seller or any of their
material assets.

         2.06  Balance  Sheet.  Sellers have  delivered  to Buyer the  unaudited
balance sheet of the Company as of February 28, 1999 (the "Balance Sheet").  The
Balance Sheet (i) has been prepared in accordance  with the books and records of
the Company,  and (ii) presents fairly the financial  position of the Company as
of such date.

         2.07 Undisclosed Liabilities. Except (i) as provided for in the Balance
Sheet, (ii) as disclosed in Schedule 2.07 or as specifically identified on other
Schedules to this Agreement or (iii) for  liabilities  owed to Buyer or DTN, the
Company has no liabilities  or obligations of any kind or nature,  whether known

                                       3
                                      -54-
<PAGE>

or unknown or secured or unsecured  (whether  absolute,  accrued,  contingent or
otherwise, and whether due or to become due).

         2.08  Absence  of Certain  Changes  or  Events.  Except as set forth in
Schedule 2.08, or as disclosed in the other  Schedules  hereto,  the Company has
not (i)  suffered  any  material  adverse  change  in its  assets,  liabilities,
business, prospects, results of operations or financial condition, (ii) suffered
any damage, destruction or casualty loss adversely affecting any material assets
of the Company, or (iii) entered into any transaction, or conducted its business
or  operations,  other  than in the  ordinary  and  usual  course  of  business,
consistent with past practices.

         2.09 Title and Related Matters. Except for the lease of office space at
Anchor  Executive  Center - River Oaks (the "Office  Lease"),  which  expires on
November, 30 1999, the Company does not own or lease any real property or office
space.  Except for the  assignments of the Office Lease and Furniture  Lease (as
herein defined) to Sellers as provided in this Agreement, all of the properties,
rights  and  assets,  tangible  and  intangible,  now  used in or,  to the  best
knowledge of Sellers,  necessary  for the conduct by the Company of its business
as presently  conducted will be indirectly  transferred to Buyer by its purchase
of the Shares. The interests of the Company in its properties, rights and assets
(whether  owned or as a lessee)  are free and clear of all Liens  other than (i)
Liens for taxes not yet due, (ii) Liens which do not affect the use by, or value
to, the Company of its rights and  assets,  or (iii) Liens set forth on Schedule
2.09.  The  term  "Liens"  shall  mean  any  pledge,  lien,  security  interest,
conditional sale agreement, or other similar encumbrance.

         2.10  Material  Contracts.  Except as set forth in Schedule  2.10,  the
Company  does  not  have  nor is it  bound  by (a) any  agreement,  contract  or
commitment  relating  to the  employment  of any person by the  Company,  or any
bonus, commission, severance or termination pay, deferred compensation, pension,
profit  sharing,  stock option,  employee  stock  purchase,  retirement or other
employee  benefit plan, (b) any agreement,  indenture or other  instrument which
contains  restrictions  with  respect  to  payment  of  dividends  or any  other
distribution  in respect of its capital stock,  (c) any  agreement,  contract or
commitment  relating  to capital  expenditures,  (d) any loan or advance  to, or
investment in, any other person other than cash advances in the ordinary  course
of  business  consistent  with past  practice,  or any  agreement,  contract  or
commitment relating to the making of any such loan, advance or investment except
for cash  advances  in the  ordinary  course of  business  consistent  with past
practice,  (e) any debt  obligation for borrowed money or any guarantee or other
contingent  liability in respect of any  indebtedness or obligation of any other
person (other than the endorsement of negotiable  instruments for collection and
other  similar  transactions  in the  ordinary  course  of  business),  (f)  any
management,  distributorship, sales, service (personal or otherwise), consulting
or any other similar type of contract, (g) any agreement, contract or commitment
limiting  the  freedom of the  Company to engage in any line of  business  or to
compete with any other person or in any area, (h) any other agreement,  contract
or commitment  which is not cancelable  without  penalty within 30 days, (i) any
outstanding  powers of attorney or proxies granted to any person for any purpose
whatsoever, (j) any contract or oral or written agreement for the acquisition of
any other person,  (k) any  agreement as to which the United States  Government,
any state, local or municipal government or any foreign government or any agency
or  instrumentality  of any of the  foregoing is a party,  exclusive of any such
agreement which contains solely the provisions set forth in a form contract used
by the  Company  in its  ordinary  course of  business,  which  forms  have been
previously  made available to Buyer,  or (l) any proposed  contract or agreement
which  upon  acceptance  of a customer  or third  party  would  create a binding

                                       4
                                      -55-
<PAGE>

obligation  upon the Company and which would not be cancelable  without  penalty
within  thirty  (30)  days  (all such  oral or  written  agreements,  contracts,
arrangements  and  commitments  are  hereinafter  referred  to as the  "Material
Contracts").  True,  complete and correct copies of all such written  contracts,
commitments,  agreements  or  arrangements  described on Schedule 2.10 will have
been made available to Buyer prior to Closing. Schedule 2.10 contains a complete
list of all such oral contracts,  agreements,  commitments or  arrangements  and
identifies  which of such  contracts are oral in nature.  Except as set forth on
Schedule 2.10, there is not, under any of the Material Contracts, any default or
event which, with notice or lapse of time or both, would constitute a default on
the part of the  Company.  Neither the Company nor any Seller has  received  any
notice from the other party to such  Material  Contracts of the  termination  or
threatened  termination  thereof and no Seller  knows of the  occurrence  of any
event which would allow such other party to  terminate  such  Material  Contract
except as otherwise  disclosed in the Schedules  hereto.  Except as set forth on
Schedule 2.10 or any other Schedule hereto,  no indebtedness of the Company will
be accelerated by its terms, or result from the consummation of the transactions
contemplated  hereby.  Schedule 2.10 contains a complete list of all  agreements
providing  for the payment of  severance  pay to  employees  of the Company (the
"Termination  Benefits  Agreements").  Except as expressly indicated on Schedule
2.10, no event has occurred  under any of the  Termination  Benefits  Agreements
which  alone or upon the  giving of notice or the  passage of time or both would
obligate the Company to make any payment under any of the  Termination  Benefits
Agreements.

         2.11 Leases. Except for the lease of office furniture from Aaron Rents,
Inc. (the  "Furniture  Lease"),  which  expires on May 23, 1999,  and the Office
Lease,  the Company is not a party (as lessee) to any other lease. All rents and
additional  rent due to the Closing  Date on such leases have and will have been
paid and in each case,  the lessee has been in  peaceable  possession  since the
commencement  of the original  term of such lease or  arrangement  and is not in
default  thereunder.  Except as set forth on Schedule  2.11,  there is not, with
respect  to leases  referred  to above,  any  existing  default,  or an event of
default,  or event which, with or without notice or lapse of time or both, would
constitute a default or an event of default, on the part of the Company.

         2.12 Proprietary  Rights;  Computer  Programs,  Databases and Software.
Schedule 2.12 contains a complete list of all trademarks,  trade names,  assumed
names, service marks, logos, patents, copyrights and copyright registration, and
any  applications  for  registration  therefor  presently  owned  or held by the
Company or with  respect to which the Company owns or holds any license or other
direct or indirect interest  (collectively,  the "Proprietary  Rights");  and no
other  Proprietary  Rights are used in or are  necessary  for the conduct of the
business  of the  Company  as  such  business  is  presently  conducted.  Unless
otherwise  indicated in such  Schedule 2.12 the Company owns  sufficient  right,
title and interest in and to the material  Proprietary Rights for the conduct of
its business.  No material  Proprietary Rights used by the Company conflict with
or infringe the rights of any other person.  No claims have been asserted by any
person  with  respect  to  the  ownership,  validity,  license  or  use  of  the
Proprietary  Rights and no Seller knows of any basis for such claim. The Company
has taken all  measures  which it believes  to be  appropriate  to maintain  and
protect the  Proprietary  Rights.  The Company has the right to use all material
Proprietary  Rights,  to provide and sell the services and products provided and
sold by it, and to conduct its business as heretofore conducted,  and, except as
set forth on Schedule 2.12, the  consummation of the  transactions  contemplated
hereby will not alter or impair any such rights. Except as set forth on Schedule
2.12, no person is known to be infringing on or violating the Proprietary Rights
used by the  Company.  Except in the  ordinary  course of its business or as set

                                       5
                                      -56-
<PAGE>

forth in Schedule 2.12, the Company has not sold, licensed,  leased or otherwise
transferred  or granted any interest or rights to any of its computer  programs,
databases  or software to any other  person.  The  occurrence  in or use by such
computer  programs,  databases and software of dates on or after January 1, 2000
("Millennial  Dates") will not  adversely  affect the  performance  thereof with
respect  to date  dependent  data,  compilations,  output,  or  other  functions
(including but not limited to  calculating,  comparing and  sequencing) and that
such computer programs,  databases and software will create,  store, process and
output  information  related to or including  Millennial  Dates without error or
omissions.

         2.13  Litigation.  Schedule  2.13  sets  forth a  complete  list and an
accurate   description  of  all  claims,   actions,   suits,   proceedings   and
investigations pending and threatened, by or against or involving the Company or
its business. No such pending or threatened claims, actions, suits,  proceedings
or  investigations,  if  adversely  determined,  would,  individually  or in the
aggregate,  materially  adversely  affect  the  business,  financial  condition,
results  of  operations  or  prospects  of the  Company  taken as a whole or the
transactions  contemplated  hereby.  The Company does not know of any reasonable
basis for any other such claim, action, suit,  proceeding or investigation.  The
Company is not subject to any judgment,  order or decree  entered in any lawsuit
or proceeding which may have a material adverse effect on any of its operations,
business practices or on its ability to acquire any property or conduct business
in any area.

         2.14 Employee  Benefit  Matters.  Neither the Company nor any member of
the Control Group (within the meaning of section 414(b) of the Internal  Revenue
Code of 1986, as amended (the "Code")) maintains, has contributed to or has ever
been obligated to contribute to, for, on behalf of or with respect to current or
former  employees  of the  Company,  any  employee  benefit  plan (as defined in
Section 3(3) of the Employee  Retirement Income Security Act of 1974, as amended
("ERISA")),  multiemployer  plan (as  defined  in ERISA  Section  3(37)),  stock
purchase plan,  stock option plan or deferred  compensation  agreement,  plan or
funding arrangement.  There are no employee welfare benefit plans (as defined in
ERISA Section 3(1)) maintained by the Company.

         2.15 Governmental  Authorizations and Regulations.  The Company has all
material licenses,  franchises,  permits and other  governmental  authorizations
necessary to the conduct of its  business,  as presently  conducted and the same
are in full force and effect.  The business of the Company is being conducted in
compliance in all material  respects with all applicable  licenses,  franchises,
permits and other  governmental  authorizations  and, to the best  knowledge  of
Sellers,  in  compliance  in all material  respects  with all  applicable  laws,
ordinances,  rules and regulations of all governmental  authorities  relating to
its  properties or  applicable to its business.  Except as set forth on Schedule
2.15, the Company has not received any notice of any alleged violation of any of
the foregoing.

         2.16  Labor  Matters.  Except as set forth in  Schedule  2.16,  (i) the
Company is in  compliance  in all material  respects  with all  applicable  laws
respecting health and occupational safety,  employment and employment practices,
terms and  conditions  of  employment  and wages and hours  (including,  without
limitation,  the Federal Immigration Reform and Control Act of 1986), (ii) there
is no unfair labor practice  complaint against the Company pending or threatened
before the  National  Labor  Relations  Board,  (iii)  there are no  proceedings
pending or threatened  before the National Labor Relations Board with respect to
the Company,  (iv) there are no  discrimination  charges  (relating to sex, age,
religion, race, color, national origin, ethnicity, handicap or veteran status or
any other basis protected by relevant law) pending before any federal,  state or

                                       6
                                      -57-
<PAGE>

local agency or authority  against the Company or any of its  employees,  (v) no
grievance  which  might  have a  material  adverse  effect  upon the  Company is
currently  pending,  (vi) the Company is not bound by any collective  bargaining
agreement  and  there is no  collective  bargaining  agreement  currently  being
negotiated by the Company and (vii) the Company has not experienced any material
labor difficulty during the past three years.

         2.17  Insurance.  The Company  maintains and has  maintained  insurance
coverage (including without limitation workers compensation  insurance) which is
sufficient for compliance with all  requirements of law and of all agreements to
which the  Company  is a party.  With  respect  to all  policies,  all  premiums
currently  payable or previously  due and payable with respect to all periods up
to and  including  the  Closing  Date  will  have  been  paid and no  notice  of
cancellation  or termination  has been received with respect to any such policy.
Such policies will remain in full force and effect through the respective  dates
set forth in such policies  without the payment of additional  premiums,  unless
called for in its original terms.

         2.18 Tax Matters.  (a) All Federal,  state,  local and foreign  income,
profits,  franchise,  sales,  use,  occupancy,  excise,  withholding,   payroll,
employment and other taxes and  assessments  (including  interest and penalties)
payable  by,  or due  from,  the  Company  have been  fully  paid or  adequately
disclosed and provided for in the Balance Sheet of the Company.

         (b) The  Company  has not  filed any  election  or  caused  any  deemed
election under Section 338 of the Code.

         (c) The  Company is not  delinquent  in the payment of any taxes and no
extensions of time have been granted to the Company to file any return  required
by applicable law to be filed by it prior to or on the Closing Date,  which have
expired or will expire on or before the Closing Date without such return  having
been filed.

         2.19 Environmental Matters. The Company is in material compliance with,
and has not done anything to be in material  violation of any federal,  state or
local laws relating to the environment.

         2.20 Brokers and  Finders.  No Seller has employed any broker or finder
and no broker or  finder is  entitled  to any  brokerage  fees,  commissions  or
finder's fees arising from any act,  representation or promise of any of them in
connection with the transactions  contemplated hereby;  provided,  however, each
Seller so represents  and warrants only with respect to that Seller and not with
respect to any other Seller.

         2.21 Books and Records.  The minute books of the Company, as previously
made available to Buyer,  contain accurate  records in all material  respects of
all  meetings of and  corporate  actions or written  consents by the  respective
stockholders and Boards of Directors of the Company.

         2.22 Bank Accounts.  Sellers will cause the Company to deliver to Buyer
at least 3 business  days prior to the Closing an  accurate  and  complete  list
showing the name and address of each bank in which the Company has an account or
safe  deposit  box, the number of any such account or any such box and the names
of all persons authorized to draw thereon or to have access thereto.

                                       7
                                      -58-
<PAGE>

         2.23 Other Information.  The information  furnished to Buyer by Sellers
or the Company or pursuant to this Agreement, including the exhibits hereto, the
schedules  identified  herein, and in any certificate or other document executed
or delivered  pursuant  hereto by Sellers  (which for purposes of this Agreement
shall be deemed to be representations  and warranties),  is not materially false
or misleading,  does not contain any misstatement of material fact, and does not
omit to state  any  material  fact  required  to be  stated in order to make the
statements therein not misleading in light of the circumstances under which they
were made.

                                   ARTICLE III

                     REPRESENTATIONS AND WARRANTIES OF BUYER

         As of the date hereof and as of the Closing Date,  Buyer represents and
warrants to Sellers as follows:

         3.01  Organization.  Buyer is a  corporation  duly  organized,  validly
existing and in good standing under the laws of the State of Nebraska.

         3.02  Authority  Relative  to this  Agreement.  Buyer  has full  power,
capacity and  authority  (corporate  or  otherwise)  to execute and deliver this
Agreement and to consummate the transactions  contemplated hereby. The execution
and  delivery  of  this  Agreement  and  the  consummation  of the  transactions
contemplated  hereby  have  been  duly and  validly  authorized  by the Board of
Directors  of  Buyer  and no  other  proceedings  on the  part of  Buyer  or its
stockholders  are  necessary to approve and authorize the execution and delivery
of this Agreement or the consummation of the transactions  contemplated  hereby.
This  Agreement  has been duly and validly  executed and  delivered by Buyer and
(assuming  the  valid  execution  and  delivery  of the  Agreement  by  Sellers)
constitutes a legal, valid and binding agreement of Buyer,  enforceable  against
Buyer in accordance  with its terms,  except as the  enforcement  thereof may be
limited  by  bankruptcy  and  other  laws of  general  application  relating  to
creditors' rights and general principles of equity.

         3.03 Consents and  Approvals;  No Violation.  Neither the execution and
delivery  of this  Agreement  by  Buyer  nor the  consummation  by  Buyer of the
transactions  contemplated  hereby,  nor  compliance  by  Buyer  with any of the
provisions  hereof,  will (i) require Buyer to file or register with, notify, or
obtain any permit,  authorization,  consent, or approval of, any governmental or
regulatory  authority except for those  requirements  which become applicable to
Buyer as a result  of the  specific  regulatory  status of the  Company  or as a
result of any other facts that specifically relate to the business activities in
which the Company is or proposes to be engaged; (ii) conflict with or breach any
provision of the Articles of Incorporation or by-laws of Buyer; (iii) violate or
breach any provision of, or constitute a default (or an event which, with notice
or lapse of time or both,  would  constitute a default under,  any of the terms,
covenants conditions or provisions of any note, bond mortgage, indenture deed of
trust,  license,  franchise,   permit,  lease,  contract,   agreement  or  other
instrument,  commitment  or  obligation  to which Buyer is a party,  or by which
Buyer or any of its properties or assets may be bound, except for such breach or
default  which  would not have a  material  adverse  effect on the  transactions
contemplated  by this  Agreement  taken as a whole;  or (iv)  violate any order,
writ,  injunction,  decree,  judgment,  statute,  law or  ruling of any court or
governmental  authority applicable to Buyer or any of its material assets, which
violation would have a material adverse effect on the transactions  contemplated
by this Agreement taken as a whole.

                                       8
                                      -59-
<PAGE>

         3.04  Litigation;  Compliance  with  Law.  Buyer  is not a party to any
action or proceeding which seeks, or is subject to, any outstanding order, writ,
injunction  or  decree,   which   restrains  or  enjoins   consummation  of  the
transactions  contemplated hereby or which otherwise challenges the transactions
contemplated hereby and (ii) there is no litigation, administrative, arbitral or
other  proceeding,  or  petition or  complaint  or, to the  knowledge  of Buyer,
investigation  before any court or governmental or regulating  authority or body
pending or, to the knowledge of Buyer,  threatened  against or relating to Buyer
that  would   materially   adversely  affect  Buyer's  ability  to  perform  its
obligations pursuant to this Agreement.

         3.05 Brokers and  Finders.  Buyer has not employed any broker or finder
and, to Buyer's  knowledge,  no broker or finder is  entitled  to any  brokerage
fees,  commissions  or finder's  fees arising from any act,  representations  or
promise of Buyer, in connection with the transactions contemplated hereby.

         3.06 Purchase for Investment. Buyer will acquire all of the outstanding
stock of the Company to be  purchased  by it  hereunder  for its own account for
investment and not with a view toward any resale or distribution thereof.

                                   ARTICLE IV

                            COVENANTS OF THE PARTIES

         4.01 Expenses.  Whether or not the transactions contemplated hereby are
consummated,  all costs and expenses  incurred in connection with this Agreement
and the  transactions  contemplated  hereby will be paid by the respective party
that  incurred  such cost and expense (it being  understood,  however,  that all
legal and accounting  fees and expenses so incurred by the Company shall be paid
by the Sellers).

         4.02 Transfer Taxes.  All transfer taxes  (including all stock transfer
taxes, if any) incurred in connection  with this Agreement and the  transactions
contemplated  hereby will be borne by Sellers,  and Sellers  will,  at their own
expense,  file all necessary tax returns and other documentation with respect to
all such transfer  taxes,  and, if required by applicable law, the other parties
hereto will (and will cause the Company  to) join in the  execution  of any such
tax returns or other documentation.

                                    ARTICLE V

                               RELATED AGREEMENTS

         5.01  Termination  of Master  Agreement and Management  Agreement.  The
parties hereto agree that effective as of the Closing Date, the Master Agreement
and the  Management  Agreement  shall be  terminated  and of no further force or
effect.

         5.02 Release.  Effective as of the Closing,  Kennedy, Brown and Sellers
do hereby fully and absolutely  release and forever  discharge DTN and Buyer and
their  Affiliates,  officers,  directors,  employees  and agents (the  "Released
Parties")  from any and all  claims,  demands  and  causes of action of any kind
whatsoever,  whether known or unknown at the present time, which any of Kennedy,
Brown and Sellers may have against any of the  Released  Parties with respect to
actions  of any of the  Released  Parties  prior to the date of this  Agreement,

                                       9
                                      -60-
<PAGE>

including  without  limitations  matters relating to the Master  Agreement.  The
foregoing  release is intended  and shall be  construed  as a full and  complete
release of all claims,  demands,  and causes of action  referred to above.  This
release shall inure to the benefit of the Released  Parties and their respective
heirs, representatives, successors and assigns.

         5.03 Assignment and Assumption of Leases.  Effective as of the Closing,
the Company  does hereby  assign all of its right,  title and interest in and to
the Office Lease and  Furniture  Lease to Sellers.  Sellers  hereby  accept such
assignment  and each Seller hereby  jointly and  severally  agrees to assume all
obligations  of the Company under the Office Lease and Furniture  Lease from and
after the Closing Date and to hold Buyer and the Company  harmless  from any and
all liabilities arising under the Office Lease or Furniture Lease from and after
the Closing Date.  Sellers  further  agree that promptly  after the Closing they
will use their best  efforts to obtain the release of the Company by the lessors
under the Office Lease and Furniture Lease.

                                   ARTICLE VI

                          SURVIVAL AND INDEMNIFICATION

         6.01  Survival  of  Representations,   Warranties  and  Covenants.  All
covenants and  agreements of any party hereto set forth herein shall survive the
Closing for the period provided for in such covenant or, if not so provided, for
a period of one year. The  representations and warranties set forth herein shall
survive  the Closing and shall  remain in effect for the  applicable  statute of
limitation.

         6.02 Post-Closing Indemnification. (a) From and after the Closing Date,
Sellers  jointly and severally  shall defend,  indemnify and hold harmless Buyer
and its  affiliates  (including  the  Company)  and  each of  their  successors,
assigns,  officers,  directors  and  employees  (the "Buyer  Indemnitee  Group")
against  and in  respect of any and all  losses,  actions,  suits,  proceedings,
claims, liabilities, damages, causes of action, demands, assessments, judgments,
and  investigations  and any and all costs and expenses  paid to third  parties,
including   without   limitation,   reasonable   attorneys'  fees  and  expenses
(collectively,  "Damages"),  suffered  by any of them as a result of, or arising
from:  (i)  any  inaccuracy  in or  breach  of  or  omission  from  any  of  the
representations or warranties made by Sellers in Article II of this Agreement or
pursuant  hereto,  or  any  nonfulfillment,  partial  or  total,  of  any of the
covenants  or  agreements  made by Sellers in this  Agreement  to the extent not
waived by Buyer in  writing;  or (ii) any claim,  action,  suit,  proceeding  or
investigation  of any kind relating to or arising from events occurring prior to
the Closing  Date,  instituted  by or against or involving the Company or any of
its business or assets (other than those claims, actions, suits, proceedings and
investigations set forth in Schedule 2.13 of the Disclosure Schedule) regardless
of whether such claims, actions,  suits,  proceedings or investigations are made
or commenced before or after the Closing Date, provided that Damages relating to
claims,  actions,  suits,  proceedings and investigations  that relate to events
occurring  both before and after the Closing Date shall be  equitably  allocated
between Buyer and Sellers.

         (b) From and after the Closing Date, Buyer shall defend,  indemnify and
hold harmless Sellers and their heirs, trustees,  successors and assigns against
and in respect  of any and all  losses,  actions,  suits,  proceedings,  claims,
liabilities,  damages, causes of action, demands,  assessments,  judgments,  and
investigations  and  any and all  costs  and  expenses  paid to  third  parties,
including without limitation,  reasonable attorneys' fees and expenses, suffered

                                       10
                                      -61-
<PAGE>

by any of them as a result of, or arising from,  any  inaccuracy in or breach of
or  omission  from any of the  representations  or  warranties  made by Buyer in
Article  III of this  Agreement  or  pursuant  hereto,  or any  non-fulfillment,
partial or total,  of any of the covenants or  agreements  made by Buyer in this
Agreement to the extent not waived by Sellers in writing.

         (c) If a claim by a third party is made against an  indemnified  party,
and if such party  intends to seek  indemnity  with respect  thereto  under this
Article VI, the indemnified  party shall promptly (and in any case within thirty
days of such claim  being  made)  notify the  indemnifying  party of such claim,
provided,  however,  that the failure to so notify the indemnifying  party shall
not discharge the  indemnifying  party of its obligations  hereunder except that
the indemnifying  party shall not be liable for default judgments or any amounts
related  thereto  if the  indemnified  party  shall  not  have so  notified  the
indemnifying party.  Subject to the following  sentence,  the indemnifying party
shall have thirty days after  receipt of such notice to  undertake,  conduct and
control,  through  counsel of its own  choosing  (which is  satisfactory  to the
indemnified party) the settlement or defense thereof,  and the indemnified party
shall cooperate with it in connection  therewith (provided that the indemnifying
party shall permit the  indemnified  party to participate in such  settlement or
defense through counsel chosen by the indemnified party,  provided that the fees
and expenses of such counsel  shall be borne by the  indemnified  party) and the
indemnifying  party shall promptly  reimburse the indemnified party for the full
amount  of any loss  resulting  from  such  claim and all  related  expenses  as
incurred  by  the   indemnified   party  within   limits  of  this  Article  VI.
Notwithstanding  anything herein to the contrary,  the  indemnified  party shall
have the right to conduct and control the defense of any such claim in the event
that such claim (including a claim for equitable  relief) or the continuation of
such claim  could  reasonably  be expected to  materially  adversely  affect the
business,  results  of  operations,  prospects  or  financial  condition  of the
indemnified party or any of its affiliates,  provided,  however, the indemnified
party may not  settle any claim for an amount in excess of $25,000 or consent to
any settlement which imposes equitable remedies on the indemnifying party or its
affiliates  without the prior consent of the indemnifying  party,  which consent
shall not be unreasonably withheld, unless the indemnified party agrees to waive
any right to indemnity  therefor by the indemnifying  party. If the indemnifying
party does not notify the indemnified party within thirty days after the receipt
of the  indemnified  party's  notice of a claim of indemnity  hereunder  that it
elects to  undertake  the defense  thereof or if the  indemnifying  party is not
reasonably  contesting the claim in good faith, the indemnified party shall have
the right to  contest,  settle or  compromise  the claim in the  exercise of its
reasonable judgment, and all losses incurred by the indemnified party, including
all fees and expenses of counsel for the indemnified party, shall be paid by the
indemnifying party.

         (d) Claims for  indemnification  made under this  Section 6.02 shall be
made within a period of three years from the Closing  Date,  provided,  however,
notwithstanding the foregoing,  claims for  indemnification  with respect to any
action, lawsuit,  proceeding or investigation of any kind relating to or arising
out of the matters  referred to in Section  6.02(a)(ii)  may be made within five
years from the Closing Date.

         6.03 Tax  Indemnity,  Etc. (a) Sellers  jointly and severally  shall be
responsible  for  and  pay  all  Taxes   attributable  to  the  Company  or  its
subsidiaries  or for which the  Company is liable for any period or portion of a
period  that ends on or before  the  Closing  Date  which  have not been paid or
adequately  provided for in the Balance Sheet.  Such Taxes shall include but not
be  limited  to the  Taxes of any  member  of an  affiliated  group of which the

                                       11
                                      -62-
<PAGE>

Company  was a member for federal  income tax  purposes or any entity with which
the Company filed a combined return for state or local tax purposes.

         (b) Sellers jointly and severally shall  indemnify  Buyer,  the Company
and their affiliates and their  respective  successors and assigns (each, a "Tax
Indemnified  Party",  and collectively,  "Tax Indemnified  Parties") against and
hold  the Tax  Indemnified  Parties  harmless  on an  after-tax  basis  from all
liability, loss or damage and from all expenses paid to third parties (including
reasonable  attorneys'  fees) with  respect to all such Taxes  described  in the
immediately preceding clause (a).

         (c) All tax allocation,  tax sharing and similar agreements, if any, to
which the  Company is or was a party at any time on or before the  Closing  Date
shall be  terminated  as of the Closing Date with  respect to the  Company.  The
Company shall have no obligation  for the payment of any amount  pursuant to any
such  agreement,  except as  expressly  provided for in the Balance  Sheet.  The
foregoing  indemnity  obligations of Sellers and the covenants and agreements of
the parties  contained  in this  Section  6.03 shall  survive the Closing and be
applicable for the applicable  statute of limitations  (as such may be waived or
extended).

         (d) For  purposes  of this  Agreement,  "Taxes"  shall  mean all taxes,
charges, fees, levies or other assessments,  including,  without limitation, all
net income,  gross income,  gross receipts,  sales,  use, ad valorem,  transfer,
franchise,   profits,  license,   withholding,   payroll,  employment,   excise,
estimated,  severance,  stamp,  occupation,  property  or other  taxes,  customs
duties, fees,  assessments or charges of any kind whatsoever,  together with any
interest and any penalties,  additions to tax or additional  amounts  imposed by
any taxing authority (domestic or foreign) upon the Company or its subsidiaries.

                                   ARTICLE VII

                            MISCELLANEOUS PROVISIONS

         7.01  Amendment  and  Modification.  This  Agreement  may  be  amended,
modified or supplemented only by written agreement of all of the parties hereto.

         7.02 Waiver of Compliance;  Consents.  Except as otherwise  provided in
this Agreement, any failure of any of the parties to comply with any obligation,
covenant,  agreement or  condition  herein may be waived by the party or parties
entitled to the  benefits  thereof  only by a written  instrument  signed by the
party  granting  such  waiver,  but such waiver or failure to insist upon strict
compliance  with such  obligation,  covenant,  agreement or condition  shall not
operate as a waiver of, or estoppel  with  respect to, any  subsequent  or other
failure.  Whenever this Agreement requires or permits consent by or on behalf of
any party hereto,  such consent shall be given in writing in a manner consistent
with the  requirements  for a waiver of  compliance as set forth in this Section
7.02.

         7.03  No  Third  Party  Beneficiaries.   Except  as  provided  in  this
Agreement,  nothing in this Agreement shall confer any rights upon any person or
entity  which  is not a  party  or a  permitted  assignee  of a  party  to  this
Agreement.

         7.04  Notices.  All  notices,   requests,  claims,  demands  and  other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given when  delivered  in person,  by cable,  telegram or telex,  telecopy,

                                       12
                                      -63-
<PAGE>

courier,  express mail delivery  service,  or by  registered  or certified  mail
(postage  prepaid,  return  receipt  requested)  to the  respective  parties  as
follows:

         (a)      if to Sellers, Kennedy, Brown or the Company, to:

                  Ms. Marcia C. Kennedy
                  P.O. Box 270746
                  Houston, TX  77277

                  With a copy to:

                  Looper, Reed, Mark & McGraw
                  1300 Post Oak Blvd, Suite 2000
                  Houston, Texas 77056
                  Attn: Robert James

         (b)      if to Buyer or DTN, to:

                  Data Transmission Network Corporation
                  9110 West Dodge Road, Suite 200
                  Omaha, Nebraska  68114
                  Attn: Charles R. Wood, Sr. Vice President

                  with a copy to:

                  Abrahams Kaslow & Cassman
                  8712 West Dodge Road
                  Suite 300
                  Omaha, Nebraska  68114
                  Attn: R. Craig Fry

or to such  other  address  as the  person  to whom  notice  is  given  may have
previously  furnished  to the others in  writing  in the manner set forth  above
(provided  that  notice of any change of address  shall be  effective  only upon
receipt thereof).

         7.05 Assignment.  This Agreement and all of the provisions hereof shall
be  binding  upon and  inure to the  benefit  of the  parties  hereto  and their
respective  successors and permitted assigns.  Neither this Agreement nor any of
the rights,  interests or obligations  hereunder  shall be assigned by any party
hereto without the prior written consent of the other parties.

         7.06 Governing Law. This Agreement  shall be governed by the law of the
State of Nebraska as to all matters,  including,  but not limited to, matters of
validity,  construction,  effect, performance and remedies without giving effect
to the principles of choice of law thereof.

         7.07  Counterparts.  This  Agreement  may be  executed  in two or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

                                       13
                                      -64-
<PAGE>

         7.08 Interpretation. The article and section headings contained in this
Agreement are solely for the purpose of reference, are not part of the agreement
of the parties and shall not in any way affect the meaning or  interpretation of
this Agreement.

         7.09 Entire  Agreement.  This Agreement,  including the Exhibits hereto
and the documents,  schedules,  certificates and instruments  referred to herein
embodies the entire agreement and understanding of the parties hereto in respect
of the transactions  contemplated by this Agreement.  There are no restrictions,
promises,  representations,  warranties,  covenants or undertakings,  other than
those  expressly  set forth or  referred to herein or  therein.  This  Agreement
supersedes  all prior  agreements  and  understandings  between the parties with
respect to such transactions.

         7.10   Certain Definitions.

         (a) An "affiliate" of a person shall mean any person which, directly or
indirectly,  controls,  is controlled by, or is under common control with,  such
person.

         (b) The term "control" (including,  with correlative meaning, the terms
"controlled  by" and "under common control  with"),  as used with respect to any
person, means the possession,  directly or indirectly, of the power to direct or
cause the  direction of the  management  and  policies of such  person,  whether
through the ownership of voting securities or by contract or otherwise.

         (c)  The  term  "person"  shall  mean  and  include  an  individual,  a
partnership,  a limited liability  company,  a joint venture,  a corporation,  a
trust,  an  unincorporated  organization  and a government or any  department or
agency thereof.

         (d)  The term "day" shall mean a calendar day unless otherwise stated.

         (e) The term  "subsidiary"  when used in  reference to any other person
shall mean any  corporation  of which  outstanding  securities  having  ordinary
voting power to elect a majority of the Board of  Directors of such  corporation
are owned directly or indirectly by such other person.

         (f) Whenever any representation or warranty contained in this Agreement
is qualified by reference to the  knowledge,  information  or belief of a party,
such party confirms that it has made due and diligent  inquiry as to the matters
that are the subject of such representation and warranty.

         IN WITNESS  WHEREOF,  the parties  hereto have  signed,  or caused this
Agreement to be signed by their respective representatives,  as the case may be,
as of the date first above written.

                                   DTN ACQUISITION INC., a Nebraska corporation,
                                   Buyer

                                   By:/s/ Greg T. Sloma
                                      -------------------------------
                                      Greg T. Sloma
                                   Title:President & COO



                                   DATA  TRANSMISSION  NETWORK
                                   CORPORATION, a Delaware corporation


                                   By: /s/ Greg T. Sloma
                                       ------------------------------
                                       Greg T. Sloma
                                   Title:President & COO



                                   ASSET GROWTH CORPORATION.,
                                   a Delaware corporation

                                   /s/ Marcia C. Kennedy
                                   ----------------------------------------
                                   Marcia C. Kennedy, as Seller and Individually


                                   /s/ Scott L. Brown
                                   ----------------------------------------
                                   Scott L. Brown, as Seller and Individually



                                       14
                                      -65-
<PAGE>


                                   SCHEDULE 1

                                    Number of                  Percentage of
Name of Seller                    Shares Owned              Cash Purchase Price
- --------------------------------------------------------------------------------
Marcia C. Kennedy                    100,000                     33 1/3 %

Scott L. Brown                       200,000                     66 2/3 %
                                    --------                    ----------

         TOTALS                      300,000                      100%

                                       15
                                      -66-
<PAGE>



                               DISCLOSURE SCHEDULE

None.

                                       16
                                      -67-


                                    AGREEMENT

         THIS  AGREEMENT  is made and entered into and is effective as of May 1,
1999,  by  and  between  DATA  TRANSMISSION  NETWORK  CORPORATION,   a  Delaware
corporation   (hereinafter  "DTN"),  and  SMARTSERV  ONLINE,  INC.,  a  Delaware
corporation (hereinafter "SmartServ").

                              W I T N E S S E T H:

         WHEREAS,  SmartServ and DTN previously  entered into a Software License
and  Service  Agreement  (the  "License  Agreement")  dated  as of May 1,  1998,
pursuant to which  SmartServ  (i) licensed to DTN certain  proprietary  software
programs known as the Internet  Software (as such term is defined in the License
Agreement) utilized to provide Internet Services (as such term is defined in the
License  Agreement) to DTN's customers and (ii) agreed to provide other services
to DTN;

         WHEREAS, SmartServ and DTN previously entered into a Source Code Escrow
Agreement (the "Escrow  Agreement")  dated as of May 1, 1998,  pursuant to which
SmartServ agreed to place the source code for the Internet Software in escrow to
be  released  to DTN upon  breach of  SmartServ's  obligations  set forth in the
Escrow Agreement or the License Agreement;

         WHEREAS,  SmartServ and DTN previously  entered into a letter of intent
(the "Letter of Intent")  dated  January 26, 1999,  setting  forth the terms and
conditions  upon  which a  wholly  owned  subsidiary  of DTN  would  merge  with
SmartServ;

         WHEREAS,  the  parties  hereto  desire to (i) amend  certain  terms and
provisions of the License  Agreement as specifically set forth in this Agreement
and terminate the Letter of Intent,  (ii) provide for repayment of  indebtedness
previously   advanced  by  DTN  to  SmartServ,   (iii)  provide  for  additional
consideration  to be given by DTN to  SmartServ,  (iv)  provide for  SmartServ's
issuance to DTN of warrants to purchase  300,000  shares of the Common  Stock of
SmartServ  at an  exercise  price of $8.60 per  share,  and (v) agree upon other
matters specifically set forth in this Agreement;

         NOW, THEREFORE, in consideration of the above recitals which are made a
contractual  part  of  this  Agreement,  and  in  consideration  of  the  mutual
agreements, provisions and covenants set forth in this Agreement, the parties do
hereby agree as follows:

                                       1
                                      -68-
<PAGE>



                                    SECTION 1

                                  CONSIDERATION

         1.1 In  consideration  of the parties  entering into this Agreement and
performing  the  obligations  to be performed by them  pursuant to the terms and
provisions  of this  Agreement,  (i)  SmartServ  agrees  to repay to DTN in cash
concurrently  with the execution of this Agreement the cash advances  previously
made to SmartServ in the aggregate  amount of $1,958,300  and (ii) DTN agrees to
pay to SmartServ in cash  concurrently  with the execution of this Agreement the
sum of $5,458,300.

                                    SECTION 2

                         AMENDMENTS TO LICENSE AGREEMENT

         2.1  Defined  Terms.  The  following  definitions  shall be inserted in
alphabetical order in Section 1.1 of the License Agreement:


                  "Internet  Services means those continuous  market  quotations
         and other financial and news information  services offered from time to
         time on the internet by DTN,  which use the Internet  Software to allow
         its customers direct internet access (non-wireless) to such services.

                  Internet  Services  Revenue means (i) the revenue  received by
         DTN from the  Subscribers  for the Internet  Services  which consist of
         initiation fees,  installation fees and periodic subscription fees plus
         (ii) the transaction revenue received by DTN from Subscribers and third
         parties for equities, futures and/or options trading orders executed by
         Subscribers  using an Order  Entry  System  not  owned or  licensed  by
         SmartServ.

                  Object Code means the form of Internet Software resulting from
         the  translation  or  processing  of the Source Code by a computer into
         machine language or intermediate  code in a form that is not convenient
         to human  understanding  but  which is  appropriate  for  execution  or
         interpretation by a computer, together with related user documentation.

                  Order Entry System means an equities,  futures  and/or options
         trading  order entry or routing  software  application  and  electronic
         network directly connected (non-wireless) to the internet that provides
         Subscribers  the ability to effect  equities,  futures  and/or  options
         trades.

                                       2
                                      -69-
<PAGE>

                  SmartServ  Trading  Revenue  means  the  transaction   revenue
         received  by DTN from  Subscribers  and  third  parties  for  equities,
         futures and/or options trading orders executed by Subscribers  using an
         Order Entry System owned or licensed by SmartServ.

                  Source Code means, with respect to the Internet Software,  the
         program  instructions  and codes  written by humans with the  intention
         that the  instructions  and  codes be  compiled  and  interpreted  by a
         computer,  including  all existing  commentary,  explanations,  control
         procedures,  record  layouts for all files and program  listings-source
         codes, design documentation,  user manuals, programmers' guides, system
         guides,   current   compilation   instructions,   and  all  other  user
         documentation and programmer documentation,  including data flows, data
         structures,  control logic, flow diagrams, and principles of operation,
         useful for design, modification and maintenance of the Source Code by a
         programmer.

                  Subscribers  means those  customers  of DTN who  subscribe  to
         Internet Services.

                  Y2K  Compliant  means:  (i)  the  occurrence  in or use by the
         Internet  Software  of dates on or after  January 1, 2000  ("millennial
         dates")  will not  adversely  affect the  performance  of the  Internet
         Software with respect to date-dependent data,  computations,  output or
         other functions  (including but not limited to  calculating,  comparing
         and  sequencing)  and that the Internet  Software  will create,  store,
         process and output information related to or including millennial dates
         without errors or omissions and at no additional cost to DTN."

         2.2 Perpetual License.  Section 2.1 of the License Agreement is deleted
in its entirety and the following is inserted in its place:

                  "2.1 The Licensed Software. SmartServ hereby grants to DTN and
         its  subsidiaries  an  exclusive,  perpetual,  worldwide  license  (the
         "License")  to use the object code of the Internet  Software as part of
         DTN's  and its  subsidiaries'  business  operations  and to  allow  the
         subscribers of DTN and its subsidiaries to use the Internet Software to
         access the Internet  Services.  SmartServ agrees not to license,  sell,
         convey or otherwise transfer to anyone other than DTN any rights in the
         Internet  Software  except  SmartServ  may license the "Order Entry FIX
         Protocol"  software  to the  Bank  of New  York  as  provided  in  this
         paragraph.  In addition,  SmartServ shall not use or allow anyone other
         than DTN to use the  Internet  Software  to compete  with the  Internet
         Services. If during any calendar year ending after year 2000 (the "Base
         Year"), the aggregate  SmartServ Trading Revenue for such calendar year
         does not equal or exceed the aggregate  SmartServ  Trading  Revenue for
         the Base Year plus 30% thereof for each  calendar  year  following  the
         Base Year, to and including  such calendar year,  then the  exclusivity
         with  respect to the License  shall cease and the License  shall become
         nonexclusive  unless DTN pays to SmartServ the difference within thirty
         (30) days after the end of such  calendar  year. If during any calendar
         quarter  ending after the first twelve months of the License Term,  DTN
         does not  obtain  at least 800  subscribers  to the  Internet  Services
         (exclusive  of  renewing  subscribers,   but  not  net  of  terminating
         subscribers) at an average of at least $84.00 per subscriber per month,
         which dollar  amount shall be reduced 4% each year  thereafter  but not

                                       3
                                      -70-
<PAGE>

         below  an  average  of  $65.00  per  subscriber  per  month,  then  the
         exclusivity  with  respect to the  License  shall cease and the License
         shall become nonexclusive; provided, however, in the event of a sale to
         any entity listed in Schedule C to this Agreement or to an affiliate of
         such  entity of (i) all or  substantially  all of the  assets of DTN or
         (ii)  sufficient  stock of DTN to effect a change in control of DTN, by
         whatever   manner   including,    without   limitation,   any   merger,
         consolidation,  sale  of  assets,  sale of  capital  stock  or  similar
         transaction,  the 800  subscribers  requirement  shall  temporarily  be
         raised  to  1200   subscribers  for  the  eighteen  (18)  month  period
         immediately  following  the  occurrence  of such  event.  SmartServ  is
         negotiating  an  agreement  for the license by  SmartServ of its "Order
         Entry FIX  Protocol"  software to the Bank of New York or its affiliate
         which is a permitted  exception  to the  exclusivity  of the License as
         provided  above.  If the Bank of New York or its  affiliate  acquires a
         perpetual  right or  license  to use the  "Order  Entry  FIX  Protocol"
         software,  DTN shall be  entitled  to 30% of the  revenues  derived  by
         SmartServ therefrom.

         2.3 Object  Code.  The first  sentence  of Section  2.2 of the  License
Agreement is deleted in its entirety and the following is inserted in its place:

         "SmartServ  shall  deliver the Internet  Software to DTN in object code
         form for loading and operating by DTN on a back up server at a mutually
         agreeable location.  SmartServ agrees not to unreasonably object to any
         location proposed by DTN."

In  addition,  the  following  is added to the end of Section 2.2 of the License
Agreement:

         "From and after the occurrence of an Escrow Release Event, DTN shall be
         entitled  to modify  the  Internet  Software  and to  develop  software
         derivatives  of or  interfacing  with the Internet  Software.  All such
         modifications  of and software  derivatives  of the  Internet  Software
         developed by DTN shall be and remain the property of DTN, and SmartServ
         shall have no rights or interests therein."

         2.4 Source Code  Escrow.  Subsection  (e) of Section 2.3 of the License
Agreement is deleted in its entirety and the following is inserted in its place:

                  "e. The Source Code Escrow Package shall, upon request of DTN,
         be released from escrow to DTN for use by DTN in  accordance  with this
         Agreement  upon the  occurrence of one or more of the following  events
         (collectively  the "Escrow Release Events" and  individually an "Escrow
         Release Event"):

                           i.  SmartServ is in breach of its  obligations  under
                  the Source Code Escrow Agreement with DTN and Escrow Agent;

                           ii. if SmartServ files a petition for liquidation and
                  dissolution  under  Chapter  7 of the  Bankruptcy  Code of the
                  United  States,  or an  involuntary  petition in bankruptcy is
                  filed against  SmartServ and is not dismissed or converted for

                                       4
                                      -71-
<PAGE>

                  reorganization  under Chapter 11 of the Bankruptcy Code of the
                  United  States  within  sixty  (60) days  thereafter,  or this
                  Agreement is rejected in a proceeding  under Chapter 11 of the
                  Bankruptcy Code of the United States;

                           iii. if  SmartServ  has a negative  net worth for any
                  two consecutive fiscal quarters ending after May 31, 2000;

                           iv. if DTN elects to provide its own  maintenance  of
                  the Internet  Software  and the Hardware  pursuant to the last
                  sentence of Paragraph 4.3;

                           v. in the event of a sale to a DTN competitor  listed
                  in Schedule C to this  Agreement  or to an  affiliate  of such
                  competitor  of (i) all or  substantially  all of the assets of
                  SmartServ  or (ii)  sufficient  stock of SmartServ to effect a
                  change in control of SmartServ by whatever  manner  including,
                  without limitation, any merger, consolidation, sale of assets,
                  sale of capital stock or similar transaction; or

                           vi. if SmartServ  proves unable or otherwise fails to
                  cure a breach of this  Agreement  within the  applicable  cure
                  period set forth in this Agreement."

         2.5 License Fee. Section 3.1 of the License Agreement is deleted in its
entirety and the following is inserted in its place:


                  "3.1 License and Maintenance Fee. Except as otherwise provided
         in this Agreement,  during the License Term, DTN shall pay to SmartServ
         a monthly  license and maintenance fee (the "License Fee") equal to the
         sum of seventy percent (70%) of the SmartServ  Trading Revenue for such
         month  plus an amount  equal to twenty two  percent  (22%) of the first
         $909,091 of  Internet  Services  Revenue for such month plus  seventeen
         percent (17%) of the Internet  Services Revenue above $909,091 for such
         month.  The License Fees shall be paid to SmartServ  within twenty (20)
         days  after the end of the month to which it  relates.  Notwithstanding
         the foregoing, upon the occurrence of one or more of the Escrow Release
         Events,  DTN may at its sole cost elect to provide its own  maintenance
         of the Internet Software and the Hardware, in which case DTN shall have
         no further  obligation to pay the License Fees and SmartServ shall have
         no further obligations under Article 4 of this Agreement. If DTN elects
         to provide its own  maintenance  of the Internet  Software  pursuant to
         this  paragraph,  SmartServ  agrees  not  to  compete  with  any of the
         Internet  Services  for a period  of five  (5)  years  thereafter.  The
         foregoing will not prevent SmartServ from fulfilling its obligations to
         the Bank of New York as permitted under Section 2.1 of this Agreement."

         2.6 Warranties and Indemnification. Sections 6.2 and 6.3 of the License
Agreement are deleted in their  entirety and the following are inserted in their
place:

                  "6.2   Internet   Software.   SmartServ   warrants   that  the
         Documentation  faithfully  and  accurately  reflects the  functionality
         provided by the Internet Software. SmartServ warrants that the Internet

                                       5
                                      -72-
<PAGE>

         Software  (i) is free from  known  material  defects;  (ii)  materially
         performs in accordance with the  Documentation  and (iii) is or will be
         Y2K Compliant by September 30, 1999.

                  6.3 Services. In the event that the Internet Software does not
         perform as warranted in paragraph 6.2 hereof,  SmartServ  agrees to use
         its best efforts to promptly make the Internet  Software  perform as so
         warranted. If SmartServ is unable to make the Internet Software perform
         as so  warranted  upon thirty (30) days'  notice,  DTN (i) may elect to
         provide at its sole cost its own  maintenance of the Internet  Software
         and the Hardware, in which case DTN shall have no further obligation to
         pay the License  Fees  during the  remainder  of the  License  Term and
         SmartServ  shall have no further  obligations  under  Article 4 of this
         Agreement or (ii) may elect to terminate this Agreement."

         2.7 License Term.  Paragraphs 7.1 and 7.2 of the License  Agreement are
deleted in their entirety and the following is inserted in their place:

                  "7.1 Term. The term of this Agreement  shall commence upon the
         Effective Date and, unless  terminated  earlier  pursuant to Article 7,
         shall continue until either party  terminates this Agreement by written
         notice to the other party given at least ninety (90) days in advance of
         such  termination,  provided such  termination may not occur until such
         time as there are fewer than 1000 Subscribers at an average of at least
         $84.00 per subscriber  per month,  which dollar amount shall be reduced
         4% each  year  thereafter  but not  below  an  average  of  $65.00  per
         subscriber per month. Such term is referred to in this Agreement as the
         "License Term".

                  7.2  Termination  for  Cause.  DTN  shall  have  the  right to
         terminate  this  Agreement  upon the  violation,  breach or  default of
         SmartServ, its officers or employees, of any material provision of this
         Agreement,   including  but  not  limited  to  proprietary  rights  and
         confidentiality  obligations.  In addition, DTN shall have the right to
         terminate  this Agreement (i) upon the occurrence of any Escrow Release
         Event;  or (ii) in  accordance  with  Sections  6.3, 6.6 or 7.1 hereof.
         SmartServ shall have the right to terminate this Agreement (i) upon DTN
         becoming  insolvent,  commencing or becoming subject to any proceedings
         under any bankruptcy or insolvency law or making any assignment for the
         benefit of creditors,  suffering or  permitting  the  appointment  of a
         receiver  for its  business or assets or  commencing  the winding up or
         liquidating  its business or affairs,  voluntarily  or otherwise;  (ii)
         upon the failure of DTN to pay the License Fees in accordance with this
         Agreement for any two (2) month period,  subject to the notice and cure
         period  provided in Section  7.3; or (iii) in  accordance  with Section
         7.1."

         2.8 Termination of Service Agreement. Each and every reference to "this
Agreement and/or the License"  contained in Section 7.3 of the License Agreement
shall be changed to "this  Agreement".  In addition,  Section 7.4 of the License
Agreement  shall be deleted in its  entirety and the  following  inserted in its
place:

                                       6
                                      -73-
<PAGE>

                  "7.4 Survival of the License. Notwithstanding any provision to
         the contrary  contained in this  Agreement,  upon  termination  of this
         Agreement,  the License shall continue in perpetuity and the provisions
         of Paragraph 2.1 shall survive the termination of this Agreement."

         2.9 Schedules.  Schedules A and C attached to the License Agreement are
deleted in their  entirety and Schedules A and C attached to this  Agreement are
inserted in their place.

                                    SECTION 3

                                OTHER AGREEMENTS

         3.1  Termination  of The  Letter of Intent.  The  parties  agree  that,
effective  immediately,  the Letter of Intent is terminated and is of no further
force or effect.

         3.2 Release.  SmartServ  does hereby fully and  absolutely  release and
forever  discharge DTN and its affiliates,  officers,  directors,  employees and
agents (the "Released  Parties") from any and all claims,  demands and causes of
action of any kind  whatsoever,  whether  known or unknown at the present  time,
which SmartServ may have against any of the Released  Parties with respect to or
arising  out of the  Letter of Intent or the  transactions  contemplated  by the
Letter of Intent.  The foregoing release is intended and shall be construed as a
full and complete release of all claims,  demands, and causes of action referred
to above.  This release  shall inure to the benefit of the Released  Parties and
their respective heirs, representatives, successors and assigns.

         3.3  Escrow  Agreement.  The  parties  shall  enter  into a new  Escrow
Agreement  pursuant  to which  SmartServ  will  place  the  Source  Code for the
Internet  Software in escrow to be released to DTN upon the occurrence of one or
more Escrow Release Events.  The parties shall complete the new Escrow Agreement
on or before  July 23,  1999 with an Escrow  Agent  mutually  agreeable  to both
parties and upon terms and  conditions  substantially  the same as the  existing
Escrow  Agreement,  with such  changes as may be required by the Escrow Agent or
agreed to by both  parties.  The costs of the escrow  shall be shared by DTN and
SmartServ equally.

                                       7
                                      -74-
<PAGE>
                                    SECTION 4

                               SmartServ Warrants

         4.1  Issuance  of Warrant.  SmartServ  agrees to issue to DTN a warrant
(the  "Warrant") to purchase from  SmartServ  300,000 duly  authorized,  validly
issued,  fully paid and nonassessable shares of Common Stock, par value $.01 per
share,  of  SmartServ  (the "Common  Stock") at the purchase  price per share of
$8.60,  at any time or from time to time prior to April 30, 2003 or the date one
year after the Current Market Price (as hereinafter defined) of the Common Stock
reaches $8.60 per share, whichever is earlier.  SmartServ and DTN shall promptly
negotiate in good faith and execute an agreement  evidencing the Warrant,  which
shall  contain such terms,  conditions  and  adjustments  as may  reasonably  be
requested  by  the  parties,   including,   but  not  limited  to,  antidilution
adjustments  to the number and kind of  securities to be issued upon exercise of
the Warrant and the exercise  price.  In  addition,  the Warrant  shall  contain
registration rights substantially similar to those attached to this Agreement as
Exhibit A. For purposes of this paragraph, "Current Market Price" shall mean, as
of any date, the average daily Market Price (as hereinafter  defined) during the
period of the most recent 20 consecutive  business days ending on such date. For
purposes of this  paragraph,  "Market  Price"  shall mean,  as of any date,  the
amount per share equal to (x) the last sale price of shares of the Common  Stock
on such date or, if no such sale takes  place on such date,  the  average of the
closing bid and asked prices  thereof on such date,  in each case as  officially
reported on the principal national securities exchange on which the Common Stock
is then listed or admitted to trading,  or (y) if no shares of Common  Stock are
then listed or admitted to trading on any national  securities  exchange but the
Common Stock is designated as a national market system security by the NASD, the
last trading  price of the Common Stock on such date,  or if the Common Stock is
not so  designated,  the average of the  reported  closing bid and asked  prices
thereof on such date as shown by the NASDAQ system or, if no shares  thereof are
then quoted in such  system,  as published  by the  National  Quotation  Bureau,
Incorporated  or any successor  organization,  and in either case as reported by
any member firm of the New York Stock Exchange selected by SmartServ.

                                    SECTION 5

                             ADDITIONAL OBLIGATIONS

         5.1 Right of First Refusal.  SmartServ  hereby agrees that,  during the
License  Term (as defined in the License  Agreement),  DTN shall have a right of
first refusal to supply  content to  SmartServ's  products and services which is
not provided directly by SmartServ or its subsidiaries or affiliates. If, during
the License Term,  SmartServ  desires to acquire from third parties  content for
its products or services  which  generally  is of a type  provided by DTN or its
subsidiaries and affiliates, then SmartServ agrees to purchase such content from
DTN upon the same  terms and  conditions  that  SmartServ  would  purchase  such
content from a bona fide and  unrelated  content  provider or vendor;  provided,
however,  such  right of first  refusal is  subject  to  SmartServ's  reasonable

                                       8
                                      -75-
<PAGE>

determination  that DTN can  provide  such  content in a manner and of a quality
equal to that of other third party content  providers or vendors and on a timely
basis.

         5.2  Pending  Developments.  SmartServ  agrees  to  continue  with  due
diligence the development of the CotNet trading software  application  which has
been  discussed  with DTN. The  compensation  arrangements  with respect to such
CotNet  trading  software  application  and any  other  DTN  originated  trading
applications will be agreed upon by the parties on a case by case basis.

         5.3 Administrative  Software.  SmartServ agrees that the Administrative
Software used to administratively control user accounts is to be included in the
Internet Software;  provided,  however, that the License as it relates solely to
such Administrative Software is provided on a non-exclusive basis to DTN for its
internal use only.

         5.4 Additional Products and Services.  The parties agree that SmartServ
is engaged in the  business of providing  software  products and services on the
Internet  referred to as "DTN IQ", "Order Entry Review & Release",  "Order Entry
FIX Protocol" and "BrokerNet"  which are covered by this Agreement.  SmartServ's
other  business  operations  (hereinafter  the "Excluded  Business  Operations")
including but not limited to (i) its telephone screen  services,  (ii) any other
internet  products and services not identified  above,  or (iii) its wireless or
PCS services are not covered by the License granted  herein.  From time to time,
parts of SmartServ's Excluded Business Operations may be available for licensing
to DTN's customers.  Should any of DTN's customers  execute a license to utilize
any portion of SmartServ's  Excluded Business  Operations through DTN, DTN shall
be entitled to 30% of the revenues derived therefrom.

         5.5  Membership  on Board of  Directors.  During the  License  Term (as
defined  in the  License  Agreement),  SmartServ  agrees  to  nominate  a person
designated  from time to time by DTN and  acceptable to the  SmartServ  Board of
Directors as a member of the Board of Directors of SmartServ at the  appropriate
annual meeting of the shareholders of SmartServ held for the purpose of electing
directors of SmartServ.

                                    SECTION 6

                                  MISCELLANEOUS

         6.1 Governing Law. This Agreement  shall be governed by and interpreted
in accordance with the internal laws of the State of Nebraska, without regard to
principles of conflicts of laws.

         6.2 Entire Agreement.  This Agreement,  including the Schedules hereto,
and the License  Agreement  constitute the entire agreement  between the parties
with respect to the subject matter hereof and supersedes all previous proposals,
both oral and written, negotiations, representations,  commitments, writings and
all  other  communications  between  the  parties.  This  Agreement  may  not be

                                       9
                                      -76-
<PAGE>

released,  discharged,  modified or amended  except by an  instrument in writing
signed by a duly authorized representative of each of the parties.

         6.3  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts,  all of which taken  together  shall  constitute  one and the same
instrument  and any of the parties  hereto may execute this Amendment by signing
any such counterpart.

         6.4 Binding  Effect.  This Agreement shall be binding upon and inure to
the benefit of the parties hereto and their respective  successors and permitted
assigns.

         6.5 Superseding.  From and after the date hereof, all references to the
License Agreement (including,  but not limited to, such references in the Escrow
Agreement  and the  Asset  Purchase  Agreement  dated  April 23,  1998,  between
SmartServ  and  DTN)  shall  mean  the  License  Agreement  as  amended  by this
Agreement.

         IN WITNESS WHEREOF,  the parties have executed this Agreement to become
effective as of the day and year first above written.

DATA TRANSMISSION NETWORK           SMARTSERV ONLINE, INC.,
CORPORATION, a Delaware             a Delaware corporation
corporation

By:__________________________       By:____________________________

Title:_________________________     Title:___________________________


                                       10
                                      -77-
<PAGE>



                                   SCHEDULE A

                    [Insert description of Internet Software]

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
schedule to the Securities and Exchange Commission upon request."







                                       11
                                      -78-
<PAGE>




                                   SCHEDULE C

                         List of Prohibited Transferees

Bloomberg L.P.
Bridge Information Systems, Inc.
CBS MarketWatch.com, Inc.
CQG, Inc.
Data Broadcast Corporation
Futuresource/Bridge, L.L.C.
Hoovers, Inc.
Media General Financial Services Inc.
North American Quotations, Inc.
NY Quotes
Omega Research, Inc.
PC Quote, Inc.
Primark Corporation
Quote.com, Inc.
Reuters Group Plc.
Standard and Poor's Comstock, Inc. (S&P Comstock)
Star Data Systems, Inc.
Telekurs Financial Information, Ltd.
Telemet America, Inc.
Telescan, Inc.
The Thompson Corporation
Track Data Corporation
Window on WallStreet, Inc.
Zannett Securities Corporation

                                       12
                                      -79-
<PAGE>



                                    EXHIBIT A

                               REGISTRATION RIGHTS

[Definitions are in Section 2.]

               Section 1. Registration under Securities Act, Etc.


         1.1 Registration on Request.

         (a)  Request.  At any time and from time to time  after  September  30,
1999,  upon the written  request of DTN,  requesting that the Company effect the
registration  under  the  Securities  Act of all or  part of  DTN's  Registrable
Securities  and  specifying  the intended  method of  disposition  thereof,  the
Company  will  use its  best  efforts  to  effect  its  registration  under  the
Securities Act, including by means of a shelf registration  pursuant to Rule 415
under the  Securities  Act if so requested in such request (but in the case of a
shelf  registration  only if the Company is then eligible to use Form S-2-or S-3
(or any successor forms)),  of the Registrable  Securities which the Company has
been so  requested to register by DTN for  disposition  in  accordance  with the
intended  method  of  disposition  stated  in such  request,  all to the  extent
requisite to permit the  disposition  (in accordance  with the intended  methods
thereof  as  aforesaid)  of  the  Registrable  Securities  so to be  registered;
provided  that the  Company  shall not be  required  to effect the  registration
pursuant to this  Section 1.1 of any  Warrants  (but shall be required to effect
the registration of Registrable  Securities  described in clauses (b) and (c) of
the definition of Registrable Securities),  and provided,  further, that DTN, by
written  notice to the Company  within 10  Business  Days after its receipt of a
copy of a notice from the  managing  underwriter  delivered  pursuant to Section
1.1(g),  may  withdraw  such  request  and,  on  receipt  of such  notice of the
withdrawal  of such  request  from DTN, the Company may elect not to effect such
registration.  Subject to  subdivision  (g),  the  Company  may  include in such
registration other securities for sale for its own account or for the account of
any other Person.

         (b) Number of  Registrations.  The  Company  shall not be  required  to
effect more than one  registration  pursuant to this Section 1.1,  provided that
such  registration  shall  permit  the  disposition  of  at  least  80%  of  the
Registrable  Securities  issuable to DTN upon  exercise of all of the  Warrants,
provided,  further,  that if one or more such  registrations,  in the aggregate,
shall not permit the disposition of at least 80% of such Registrable Securities,
the Company shall be required to effect one additional  registration pursuant to
this Section 1.1 so that the aggregate  number of such  Registrable  Securities,
shall be at least 80%.

         (c) Registration  Statement Form. The Company may, if permitted by law,
effect any  registration  requested  under this  Section  1.1 by the filing of a
registration  statement  on Form S-3 (or any  successor  or  similar  short form
registration  statement)  unless, if such registration  involves an underwritten
Public Offering of such Registrable Securities, the managing underwriter of such
Public  Offering  shall notify the Company in writing  that,  in the judgment of
such managing  underwriter,  the use of a more  detailed form  specified in such

                                       13
                                      -80-
<PAGE>

notice is of material  importance to the success of the Public  Offering of such
Registrable Securities, in which case such registration shall be effected on the
form so specified.

         (d)  Expenses.  The  Company  will  pay all  Registration  Expenses  in
connection with any registration and sale effected pursuant to this Section 1.1.

         (e)  Selection  of  Underwriters.  If, in the  discretion  of DTN,  any
offering pursuant to this Section 1.1 shall constitute an underwritten offering,
the underwriter or underwriters  thereof shall be selected,  after  consultation
with the Company, by DTN and shall be acceptable to the Company.

         (f) Effective Registration Statement. A registration requested pursuant
to this  Section 1.1 will not be deemed to have been  effected (x) unless it has
become effective,  provided that a registration  which does not become effective
after the Company has filed a registration statement with respect thereto solely
by reason of the refusal to proceed of DTN shall be deemed to have been effected
by the Company at the request of DTN,  unless DTN shall have  elected to pay all
Registration Expenses in connection with such registration, (y) if, after it has
become  effective,  such  registration  is  interfered  with by any stop  order,
injunction or other order or requirement of the Commission or other governmental
agency  or  court  entered  within  one  year  of  the   effectiveness  of  such
registration  if it is a shelf  registration  pursuant  to Rule  415  under  the
Securities  Act  or  entered  within  90  days  of  the  effectiveness  of  such
registration  if other than a shelf  registration,  or (z) if the  conditions to
closing specified in the underwriting  agreement entered into in connection with
such registration are not satisfied other than by reason of some act or omission
by such Initiating Holders.

         (g) Priority in Requested  Registrations.  If a requested  registration
pursuant to this Section 1.1 involves an underwritten offering, and the managing
underwriter  shall advise the Company in writing  (with a copy to DTN) that,  in
its  opinion,  the total number of  securities  requested to be included in such
registration exceeds the number which can be sold in such offering,  the Company
will  include in any such  registration  to the  extent of the number  which the
Company  is so  advised  can be sold in such  offering  (x)  first,  Registrable
Securities requested to be included in such registration by DTN, (y) second, any
securities  proposed  by the  Company  to be sold for its own  account,  and (z)
third,  other  securities  of  the  Company  proposed  to be  included  in  such
registration, in accordance with the priorities, if any, then existing among the
Company and the holders of such other securities.

                                       14
                                      -81-
<PAGE>

         (h) Company  Request for Delay.  Except with respect to a  registration
statement  covering a shelf  registration,  the  Company  shall be  entitled  to
postpone for a reasonable period of time (but not exceeding 180 days) the filing
of any registration  statement otherwise required to be prepared and filed by it
pursuant  to  this  Section  1.1 if  the  Board  of  Directors  of  the  Company
determines,  in its reasonable  judgment,  that such  registration  and offering
would interfere with any financing,  acquisition,  corporate  reorganization  or
other  material  transaction  involving the Company or any of its affiliates and
promptly  gives DTN written notice of such  determination,  containing a general
statement  of  the  reasons  for  such  postponement  and  approximation  of the
anticipated delay. If the Company shall so postpone the filing of a registration
statement,  DTN shall have the right to withdraw the request for registration by
giving  written notice to the Company within 30 days after receipt of the notice
of postponement and, in the event of such withdrawal,  such request shall not be
counted for  purposes  of the  requests  for  registration  to which  holders of
Registrable Securities are entitled pursuant to Section 1.1.

         (i) Shelf Registration  Statement.  The Company shall be deemed to have
complied  with a request for  registration  made by DTN pursuant to this Section
1.1  if,  at the  time  of such  request,  there  shall  be an  effective  shelf
registration  statement on file with the  Commission  pursuant to Rule 415 under
the Securities Act covering the Registrable  Securities which such holders shall
have requested to be registered,  if such registration  statement  complies with
the  provisions  of this  Section  1.1  and of  Section  1.3 and if the  Company
otherwise  fulfills the  requirements  of Section 1.1 and 1.3 in respect of such
registration.

         1.2      Incidental Registration.

         (a)  Right  to  Include  Registrable  Securities.  Notwithstanding  any
limitation  contained  in Section 1.1, if the Company at any time on or prior to
April 30, 2005 proposes to register any of its  securities  under the Securities
Act (other than by a registration on Form S-4 or S-8 or any successor or similar
forms),  whether or not for sale for its own  account,  in a manner  which would
permit  registration of Registrable  Securities for sale to the public under the
Securities  Act, it will each such time give prompt written notice to DTN of its
intention to do so and of DTN's rights under this Section 1.2.  Upon the written
request of DTN made  within 20 days  after  receipt  of any such  notice  (which
request shall specify the Registrable  Securities  intended to be disposed of by
DTN and the intended  method of disposition  thereof),  the Company will use its
best  efforts  to  effect  the  registration  under  the  Securities  Act of all
Registrable  Securities  which the Company has been so  requested to register by
DTN, to the extent  requisite to permit the  disposition (in accordance with the
intended  methods thereof as aforesaid) of the  Registrable  Securities so to be
registered,  by inclusion of such  Registrable  Securities  in the  registration
statement  which covers the securities  which the Company  proposes to register,
provided that (x) the Company  shall not be required to effect the  registration
pursuant to this  Section 1.2 of any  Warrants  (but shall be required to effect
the registration of Registrable  Securities  described in clauses (b) and (c) of
the definition of Registrable  Securities)  and (y) if, at any time after giving
written  notice of its  intention  to register any  securities  and prior to the
effective  date of the  registration  statement  filed in  connection  with such

                                       15
                                      -82-
<PAGE>

registration,  the Company shall  determine for any reason not to register or to
delay  registration of such securities,  the Company may, at its election,  give
written notice of such determination to DTN and, thereupon, (i) in the case of a
determination  not to register,  shall be relieved of its obligation to register
any Registrable  Securities in connection with such  registration  (but not from
its  obligation  to pay the  Registration  Expenses  in  connection  therewith),
without  prejudice,  however,  to  the  rights  of  DTN  to  request  that  such
registration  be effected as a  registration  under Section 1.1, and (ix) in the
case of a  determination  to  delay  registering,  shall be  permitted  to delay
registering  any  Registrable  Securities  for the same  period  as the delay in
registering such other securities.  No registration  effected under this Section
1.2 shall  relieve  the  Company of its  obligation  to effect any  registration
statement upon request under Section 1.1. The Company will pay all  Registration
Expenses  in  connection  with  each  registration  of  Registrable   Securities
requested pursuant to this Section 1.2.

         (b) Priority in Incidental Registrations. If a registration pursuant to
this Section 1.2 involves an underwritten  offering and the managing underwriter
advises the Company in writing  that,  in its opinion,  the number of securities
requested  to be included in such  registration  exceeds the number which can be
sold in such  offering,  the Company  will include in such  registration  to the
extent  of the  number  which  the  Company  is so  advised  can be sold in such
offering securities determined as follows:

                  (x) if such registration as initially  proposed by the Company
         was solely a primary  registration  of its securities,  (i) first,  the
         securities proposed by the Company to be sold for its own account, (ii)
         second,  any  Registrable  Securities  requested to be included in such
         registration,  and (iii)  third,  any other  securities  of the Company
         proposed to be included in such  registration,  in accordance  with the
         priorities,  if any, then existing among the Company and the holders of
         such other securities, and

                  (y) if such registration as initially  proposed by the Company
         was in whole or in part  requested  by  holders  of  securities  of the
         Company,  other than DTN, pursuant to demand  registration  rights, (i)
         first,  securities  proposed  by the  Company  to be  sold  for its own
         account,  (ii) second,  such securities held by the holders  initiating
         such  registration,  in accordance  with the  priorities,  if any, then
         existing  among the Company and the holders of such  securities,  (iii)
         third,  any  Registrable  Securities  requested  to be included in such
         registration,  and (iv)  fourth,  any other  securities  of the Company
         proposed to be included in such  registration,  in accordance  with the
         priorities,  if any, then existing among the Company and the holders of
         such other securities.

         1.3. Registration  Procedures.  If and whenever the Company is required
to use its best efforts to effect the registration of any Registrable Securities
under the  Securities  Act as provided in Sections 1.1 and 1.2, the Company will
as expeditiously as possible:

                  (a)  prepare  and  file  with  the  Commission  the  requisite
         registration  statement (including such audited financial statements as
         may be  required  by the  Securities  Act or the rules and  regulations
         promulgated  thereunder) to effect such  registration  and use its best

                                       16
                                      -83-
<PAGE>

         efforts  to cause  such  registration  statement  to become  effective,
         provided  that  before  filing  such  registration   statement  or  any
         amendments thereto, the Company will furnish to the counsel selected by
         DTN copies of all such documents  proposed to be filed, which documents
         will be subject to the review of such counsel;

                  (b) prepare and file with the Commission  such  amendments and
         supplements to such  registration  statement and the prospectus used in
         connection  therewith as may be necessary to maintain the effectiveness
         of such registration statement and to comply with the provisions of the
         Securities  Act  with  respect  to the  disposition  of all  securities
         covered by such  registration  statement until the earlier of such time
         as all of such  securities have been disposed of in accordance with the
         intended  methods of disposition  by the seller or sellers  thereof set
         forth in such  registration  statement  and the  expiration  of 90 days
         after  such  registration  statement  becomes  effective,  except  with
         respect to any such  registration  statement filed pursuant to Rule 415
         (or any successor  Rule) under the  Securities  Act, in which case such
         period shall be one year;

                  (c)  furnish to DTN such  number of  conformed  copies of such
         registration  statement  and of  each  such  amendment  and  supplement
         thereto (in each case including all exhibits), such number of copies of
         the prospectus contained in such registration statement (including each
         preliminary  prospectus  and any  summary  prospectus)  and  any  other
         prospectus filed under Rule 424 under the Securities Act, in conformity
         with the  requirements of the Securities Act, and such other documents,
         as DTN may reasonably request;

                  (d)  use  its  best   efforts  to   register  or  qualify  all
         Registrable   Securities   and  other   securities   covered   by  such
         registration  statement under such other securities or blue sky laws of
         such  jurisdictions  as DTN  shall  reasonably  request,  to keep  such
         registration   or   qualification   in  effect  for  so  long  as  such
         registration  statement  remains in effect,  and take any other  action
         which  may be  reasonably  necessary  or  advisable  to  enable  DTN to
         consummate  the  disposition  in such  jurisdictions  of the securities
         owned by DTN, except that the Company shall not for any such purpose be
         required to qualify  generally to do business as a foreign  corporation
         in any  jurisdiction  wherein it would not but for the  requirements of
         this  subdivision  (d) be obligated to be so qualified or to consent to
         general service of process in any such jurisdiction;

                  (e) if  such  registration  includes  an  underwritten  Public
         Offering,  furnish to DTN a signed  counterpart,  addressed to DTN (and
         the underwriters), of

                           (x) an opinion of counsel for the Company,  dated the
                  date  of  any  closing  under  the   underwriting   agreement,
                  reasonably satisfactory in form and substance to DTN, and

                           (y) a "comfort"  letter,  dated the effective date of

                                       17
                                      -84-
<PAGE>

                  such registration  statement and the date of any closing under
                  the underwriting  agreement,  signed by the independent public
                  accountants   who  have  certified  the  Company's   financial
                  statements included in such registration  statement,  covering
                  substantially   the  same   matters   with   respect  to  such
                  registration  statement (and the prospectus  included therein)
                  and, in the case of the accountants'  letter,  with respect to
                  events subsequent to the date of such financial statements, as
                  are customarily covered in opinions of issuer's counsel and in
                  accountants'   letters   delivered  to  the   underwriters  in
                  underwritten  Public  Offerings of securities and, in the case
                  of the accountants'  letter,  such other financial matters, as
                  the underwriters may reasonably request;

                  (f)  immediately  notify  DTN (w) when the  prospectus  or any
         prospectus supplement or post-effective  amendment has been filed, and,
         with  respect  to the  registration  statement  or  any  post-effective
         amendment,  when the same has become  effective,  (x) of any request by
         the  Commission  for  amendments  or  supplements  to the  registration
         statement or the prospectus or for additional  information,  (y) of the
         issuance  by  the   Commission  of  any  stop  order   suspending   the
         effectiveness  of the  registration  statement or the initiation of any
         proceedings  for that  purpose and (z) of the receipt by the Company of
         any notification with respect to the suspension of the qualification of
         the  Registrable  Securities  for  sale  in  any  jurisdiction  or  the
         initiation or threatening of any proceeding for such purpose;

                  (g) use its  reasonable  best efforts to obtain the withdrawal
         of any order suspending the effectiveness of the registration statement
         at the earliest possible time;

                  (h)  immediately  notify  DTN,  at any time when a  prospectus
         relating  thereto is required to be delivered under the Securities Act,
         of the  happening  of any  event as a result  of which  the  prospectus
         included in such registration statement, as then in effect, includes an
         untrue statement of a material fact or omits to state any material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading in the light of the  circumstances  under which
         they were made, and at the request of DTN promptly  prepare and furnish
         to DTN a reasonable number of copies of a supplement to or an amendment
         of such prospectus as may be necessary so that, as thereafter delivered
         to the purchasers of such securities, such prospectus shall not include
         an untrue statement of a material fact or omit to state a material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading in the light of the  circumstances  under which
         they were made;

                  (i)  otherwise  use  its  best  efforts  to  comply  with  all
         applicable rules and regulations of the Commission,  and make available
         to its security holders, as soon as reasonably practicable, an earnings
         statement  covering the period of at least twelve months,  but not more
         than eighteen  months,  beginning  with the first full  calendar  month
         after the effective date of such registration statement, which earnings
         statement  shall  satisfy  the  provisions  of  Section  11(a)  of  the
         Securities  Act,  and not  file any  amendment  or  supplement  to such
         registration statement or prospectus to which DTN shall have reasonably

                                       18
                                      -85-
<PAGE>

         objected on the grounds  that such  amendment  or  supplement  does not
         comply in all material respects with the requirements of the Securities
         Act or of the rules or  regulations  thereunder,  having been furnished
         with a copy  thereof at least three  business  days prior to the filing
         thereof;

                  (j) if and when the Common Stock is so listed,  designated  or
         authorized  as indicated  below,  use its best efforts (x) to cause all
         such Registrable  Securities covered by such registration  statement to
         be  listed  on a  national  securities  exchange  (if such  Registrable
         Securities are not already so listed) and on each  additional  national
         securities  exchange on which similar  securities issued by the Company
         are then listed, if the listing of such Registrable  Securities is then
         permitted  under  the  rules  of  such  exchange,   or  (y)  to  secure
         designation  of  all  such  Registrable   Securities  covered  by  such
         registration  statement as a NASDAQ  "national  market system security"
         within the meaning of Rule llAa2-1 of the  Commission or, failing that,
         secure  NASDAQ  authorization  for  such  Registrable  Securities  and,
         without  limiting the  generality of the  foregoing,  to arrange for at
         least two  market  makers to  register  as such  with  respect  to such
         Registrable Securities with the NASD.

The Company may require DTN to furnish the Company  such  information  regarding
DTN and the distribution of such securities as the Company may from time to time
reasonably request in writing.

         1.4      Underwritten Offerings.

         (a) Requested Underwritten  Offerings. If requested by the underwriters
for any underwritten  offering by holders of Registrable  Securities pursuant to
the  registration  requested  under  Section 1.1, the Company will enter into an
underwriting agreement with such underwriters for such offering,  such agreement
to be  satisfactory  in substance  and form to DTN and the  underwriters  and to
contain such  representations and warranties by the Company and such other terms
as are  customarily  contained in  agreements of this type,  including,  without
limitation, indemnities to the effect and to the extent provided in Section 1.6.
DTN shall be a party to such  underwriting  agreement.  DTN shall be required to
make such  representations  and warranties to and agreements with the Company or
the underwriters as are customarily contained in such agreements.

         (b)  Incidental  Underwritten  Offerings.  If the  Company  at any time
proposes  to  register  any  of  its  securities  under  the  Securities  Act as
contemplated  by Section 1.2 and such  securities  are to be  distributed  by or
through one or more underwriters, the Company will, subject to the provisions of
Section 1.2(b),  if requested by DTN,  request such  underwriters to include the
Registrable  Securities to be offered and sold by DTN among the securities to be
distributed  by such  underwriters.  DTN  shall be a party  to the  underwriting
agreement  between the Company and such  underwriters.  DTN shall be required to
make such  representations and warranties and agreements with the Company or the
underwriters as are customarily contained in such agreements.

         (c) Holdback Agreements. (x) DTN agrees, if so required by the managing
underwriter,  not to effect any public sale or distribution of securities of the
Company  of the  same  class as the  securities  included  in such  Registration
Statement,  during the seven  days  prior to the date on which any  underwritten

                                       19
                                      -86-
<PAGE>

registration pursuant to Section 1.1 or 1.2 has become effective and the 90 days
thereafter,   or  such  longer  period  as  may  be  required  by  the  managing
underwriter.

                  (y) The  Company  agrees (i) not to effect any public  sale or
         distribution of its equity securities or securities convertible into or
         exchangeable or exercisable for any of such securities during the seven
         days prior to the date on which any underwritten  registration pursuant
         to Section 1.1 or 1.2 has become  effective and the 90 days  thereafter
         (or such longer period as may be required by the  underwriter),  except
         as  part of such  underwritten  registration  and  except  pursuant  to
         registrations  on Form S-4 or S-8 or any  successor  or  similar  forms
         thereto.

         1.5  Preparation;  Reasonable  Investigation.  In  connection  with the
preparation and filing of each registration  statement under the Securities Act,
the  Company  will  give DTN,  the  underwriter,  if any,  and  counsel  for the
underwriter,   the  opportunity  to  participate  in  the  preparation  of  such
registration  statement,  each  prospectus  included  therein  or filed with the
Commission, and each amendment thereof or supplement thereto, and will give each
of them such access to its books and records and such  opportunities  to discuss
the  business  of the  Company  with its  officers  and the  independent  public
accountants  who have certified its financial  statements as shall be necessary,
in  the  opinion  of  DTN  and  such   underwriter,   to  conduct  a  reasonable
investigation within the meaning of the Securities Act.

         1.6 Indemnification.  (a) The Company will, and hereby does, indemnify,
to the extent permitted by applicable law, DTN, its officers and directors,  and
each  Person,  if any,  who controls DTN within the meaning of Section 15 of the
Securities Act, against all losses, claims, damages, liabilities (or proceedings
in respect  thereof) and  expenses  (under the  Securities  Act or common law or
otherwise),  joint or several,  caused by any untrue statement or alleged untrue
statement  of a  material  fact  contained  in  any  registration  statement  or
prospectus  (and as amended or  supplemented if the Company shall have furnished
any amendments or supplements  thereto) or any preliminary  prospectus or caused
by any omission or alleged omission to state therein a material fact required to
be stated  therein or necessary to make the statements  therein not  misleading,
except insofar as such losses, claims,  damages,  liabilities (or proceedings in
respect  thereof)  or  expenses  are caused by any untrue  statement  or alleged
untrue  statement  contained  in or by any  omission  or alleged  omission  from
information  furnished  in  writing  to the  Company  by DTN  expressly  for use
therein.  If the offering  pursuant to any registration  statement  provided for
under this Agreement is made through  underwriters,  no action or failure to act
on the part of such underwriters  shall affect the obligations of the Company to
indemnify  DTN or any other Person  pursuant to the preceding  sentence.  If the
offering  pursuant  to  any  registration  statement  provided  for  under  this
Agreement  is made  through  underwriters,  the Company  agrees to enter into an
underwriting  agreement in customary form with such underwriters and the Company
agrees to indemnify such underwriters, their officers and directors, if any, and
each  Person,  if any,  who  controls  such  underwriters  within the meaning of
Section 15 of the  Securities  Act to the same extent as  hereinbefore  provided
with respect to the  indemnification of DTN; provided that the Company shall not
be required to indemnify DTN or any such underwriter, or any officer or director
of DTN or such  underwriter  or any Person who controls DTN or such  underwriter

                                       20
                                      -87-
<PAGE>

within the meaning of Section 15 of the  Securities  Act, to the extent that the
loss,  claim,  damage,  liability (or proceedings in respect thereof) or expense
for which  indemnification  is claimed results from DTN's or such  underwriter's
failure to send or give a copy of the amended or supplemented  final  prospectus
to the Person  asserting  an untrue  statement  or alleged  untrue  statement or
omission or alleged omission at or prior to the written confirmation of the sale
of  Registrable  Securities  to such Person if such  statement  or omission  was
corrected in such amended or supplemented final prospectus prior to such written
confirmation and DTN or the underwriter, as the case may be, was given notice of
the availability of such amended or supplemented final prospectus.

         (b) DTN will indemnify,  to the extent permitted by applicable law, the
Company,  its officers and directors  and each Person,  if any, who controls the
Company  within the  meaning of Section 15 of the  Securities  Act,  against any
losses,  claims,  damages,  liabilities (or proceedings in respect  thereof) and
expenses  resulting from any untrue  statement or alleged untrue  statement of a
material fact or any omission or alleged omission of a material fact required to
be stated in the registration  statement or prospectus or preliminary prospectus
or any  amendment  thereof  or  supplement  thereto  or  necessary  to make  the
statements  therein  not  misleading,  but only to the extent  that such  untrue
statement is contained in or such omission is from  information  so furnished in
writing by such holder  expressly  for use therein,  provided that such holder's
obligations  hereunder  shall be limited to an amount  equal to the  proceeds to
such holder of the  Registrable  Securities  sold pursuant to such  registration
statement.

         (c) Any Person entitled to indemnification under the provisions of this
Section 1.6 shall (x) give prompt notice to the indemnifying  party of any claim
with  respect  to  which  it  seeks  indemnification  (but  the  failure  of any
indemnified  party to give  notice as  provided  herein  shall not  relieve  the
indemnifying  party of its obligations under the preceding  subdivisions of this
Section  1.6,  except to the  extent  that the  indemnifying  party is  actually
prejudiced by such  failure) and (y) unless a conflict of interest  between such
indemnified  and  indemnifying  parties exists in respect of such claim,  permit
such  indemnifying  party to assume the  defense  of such  claim,  with  counsel
reasonably  satisfactory  to the  indemnified  party;  and if such defense is so
assumed, such indemnifying party shall not enter into any settlement without the
consent of the indemnified party if such settlement  attributes liability to the
indemnified  party  and such  indemnifying  party  shall not be  subject  to any
liability  for any  settlement  made  without  its consent  (which  shall not be
unreasonably withheld); and any underwriting agreement entered into with respect
to any  registration  statement  provided  for  under  this  Agreement  shall so
provide.  In the event an  indemnifying  party shall not be entitled,  or elects
not,  to assume the  defense of a claim,  such  indemnifying  party shall not be
obligated  to pay the fees and  expenses  of more  than one  counsel  or firm of
counsel for all parties  indemnified  by such  indemnifying  party in respect of
such claim,  unless a conflict of interest exists between such indemnified party
and any  other of such  indemnified  parties  in  respect  to such  claim.  Such
indemnity shall remain in full force and effect  regardless of any investigation
made by or on behalf of an  indemnified  party,  its officers,  directors or any
Person,  if any, who controls  such party as  aforesaid,  and shall  survive the
transfer of such securities by such holder.

                                       21
                                      -88-
<PAGE>

         (d) If the  indemnification  provided for in this Section 1.6 shall for
any reason be held by a court to be unavailable  to an  indemnified  party under
Section 1.6(a) or (b) hereof in respect of any loss, claim, damage or liability,
or any action in respect  thereof,  then,  in lieu of the amount paid or payable
under Section 1.6(a) or (b), the indemnified  party and the  indemnifying  party
under Section 1.6(a) or (b) shall  contribute to the aggregate  losses,  claims,
damages and liabilities  (including legal or other expenses  reasonably incurred
in  connection  with  investigating  the  same),  (x) in such  proportion  as is
appropriate  to  reflect  the  relative  fault  of  the  Company,  DTN  and  the
underwriters,  if any, which resulted in such loss, claim,  damage or liability,
or action or proceeding in respect  thereof,  with respect to the  statements or
omissions which resulted in such loss, claim, damage or liability,  or action or
proceeding  in  respect  thereof,  as  well  as  any  other  relevant  equitable
considerations  or (y) if the  allocation  provided  by clause  (x) above is not
permitted by  applicable  law, in such  proportion  as shall be  appropriate  to
reflect the relative benefits received by the Company, DTN and the underwriters,
if any,  from  the  offering  of the  securities  covered  by such  registration
statement,  provided,  that for  purposes  of clauses (x) or (y),  the  relative
benefits  received  by DTN shall be deemed not to exceed the amount of  proceeds
received by DTN and DTN shall not be required to contribute any amount in excess
of the amount it could have been required to pay to an indemnified  party if the
indemnity  under  subsection  (a) of this Section 1.6 was  available.  No Person
guilty of fraudulent  misrepresentation  (within the meaning of Section 11(f) of
the Securities  Act) shall be entitled to  contribution  from any Person who was
not guilty of such fraudulent misrepresentation. In addition, no Person shall be
obligated to contribute  hereunder any amounts in payment for any  settlement of
any action or claim effected without such Person's consent,  which consent shall
not be unreasonably withheld.

         1.7  Registration  Rights to Others.  If the Company  shall at any time
after the date of this Warrant  provide to any holder of any  securities  of the
Company rights with respect to the  registration  of such  securities  under the
Securities  Act,  such rights  shall not be in  conflict  with any of the rights
provided in this Section 1 to the holders of Registrable  Securities;  provided,
however, the foregoing shall not preclude the Company from granting registration
rights which are more favorable than those  contained in this Warrant so long as
such rights do not preclude the Company  from  complying  with the terms of this
Warrant.

         1.8 Rule 144. If and when the Common Stock is either listed, designated
or authorized as provided in Section 1.3(j),  the Company shall take all actions
reasonably  necessary to enable DTN to sell such shares of Common Stock issuable
upon exercise of this Warrant  without  registration  under the  Securities  Act
within the limitation of the provisions of Rule 144 under the Securities Act, as
such Rule may be amended from time to time, or any similar rules or  regulations
hereafter adopted by the Commission,  including, without limitation, filing on a
timely  basis all reports  required to be filed  pursuant to the  Exchange  Act.
Notwithstanding  the  provisions  of  Sections  1.1 and 1.2,  the Company has no
obligation to effect the registration of any Registrable  Securities as provided
in such  sections  if DTN can  then  sell  under  Rule  144 all the  Registrable
Securities which otherwise would be registered in accordance with such sections,
as applicable; provided such exception does not preclude DTN from exercising its
registration rights on a future occasion.

                                       22
                                      -89-
<PAGE>

Section 2.        Definitions.

         As used herein,  unless the context otherwise  requires,  the following
terms have the following respective meanings:

         Commission: the Securities and Exchange Commission or any other Federal
agency  at the  time  administering  the  Securities  Act or the  Exchange  Act,
whichever is the relevant statute for the particular purpose.

         Common Stock:  the Company's common stock, par value $.01 per share, as
constituted  on the date  hereof,  any stock into which such common  stock shall
have been  changed  or any stock  resulting  from any  reclassification  of such
common stock, and all other stock of any class or classes  (however  designated)
of the  Company the holders of which have the right,  without  limitation  as to
amount,  either to all or to a share of the  balance  of current  dividends  and
liquidating  dividends after the payment of dividends and  distributions  on any
shares entitled to preference.

         Company: SmartServ Online, Inc., a Delaware corporation.

         DTN:  Data  Transmission  Network  Corporation  or any successor to its
business.

         NASD: the National Association of Securities Dealers.

         NASDAO: the Automated Quotation System of the NASD.

         Other  Securities:  any  stock  (other  than  Common  Stock)  and other
securities of the Company or any other Person (corporate or otherwise) which DTN
at any time shall be  entitled  to  receive,  or shall have  received,  upon the
exercise of the Warrants, in lieu of or in addition to Common Stock, or which at
any time shall be  issuable  or shall  have been  issued in  exchange  for or in
replacement  of Common  Stock or Other  Securities  pursuant to this  Warrant or
otherwise.

         Person: an individual, a partnership,  an association, a joint venture,
a  corporation,  a  business,  a  trust,  an  unincorporated  organization  or a
government or any department, agency or subdivision thereof.

         Public Offering: any offering of Common Stock to the public pursuant to
an effective registration statement under the Securities Act.

         Registrable  Securities:  (a) the  Warrants,  (b) any  shares of Common
Stock or other  Securities  issued or issuable upon exercise of the Warrants and
(c) any securities  issued or issuable with respect to any common Stock or Other
Securities  referred  to in  subdivision  (b) by way of stock  dividend or stock
split or in connection with a combination of shares,  recapitalization,  merger,
consolidation  or  other  reorganization  or  otherwise.  As to  any  particular

                                       23
                                      -90-
<PAGE>

Registrable   Securities,   once  issued  such  securities  shall  cease  to  be
Registrable  Securities  when (x) a  registration  statement with respect to the
sale of such securities shall have become effective under the Securities Act and
such securities shall have been disposed of in accordance with such registration
statement,  (y) they  shall have been sold as  permitted  under Rule 144 (or any
successor  provision) under the Securities Act, or (z) they shall have ceased to
be outstanding.

         Registration   Expenses:   all  expenses   incident  to  the  Company's
performance of or compliance with Section 1, including,  without limitation, all
registration,  filing and NASD fees,  all fees and  expenses of  complying  with
securities  or blue sky laws,  all word  processing,  duplicating  and  printing
expenses, messenger and delivery expenses, the fees and disbursements of counsel
for  the  Company  and of its  independent  public  accountants,  including  the
expenses  of any  special  audits  or "cold  comfort"  letters  required  by the
underwriters  with  respect to such  registration,  premiums  and other costs of
policies of insurance against  liabilities arising out of the public offering of
the Registrable  Securities being  registered and any fees and  disbursements of
underwriters   customarily   paid  by  issuers  of  securities,   but  excluding
underwriting  discounts and commissions and transfer taxes, if any, and the fees
and disbursements of DTN's counsel and accountants.

         Securities  Act: the  Securities  Act of 1933,  or any similar  Federal
statute, and the rules and regulations of the Commission thereunder,  all as the
same shall be in effect at the time of determination.

         Warrants:  the  meaning  specified  in the opening  paragraphs  of this
Warrant.


                                       24
                                      -91-




                             SMARTSERV ONLINE, INC.











                          COMMON STOCK PURCHASE WARRANT

                           Expiring November 17, 2000


                                      -92-
<PAGE>




                                TABLE OF CONTENTS

                                                                            Page

1.       Exercise of Warrant ................................................  1

         1.1.     Manner of Exercise ........................................  1
         1.2.     When Exercise Deemed Effected .............................  2
         1.3.     Delivery of Stock Certificates, Etc. ......................  2
         1.4.     Company to Reaffirm Obligations ...........................  2

2.       Adjustments ........................................................  3

         2.1.     Number of Shares; Warrant Price ...........................  3
         2.2.     Adjustment of Warrant Price ...............................  3
                  2.2.1.   Issuance of Additional Shares of Common Stock.....  3
                  2.2.2.   Extraordinary Dividends and Distributions ........  3
         2.3.     Treatment of Options and Convertible Securities ...........  4
         2.4.     Treatment of Stock Dividends, Stock Splits, Etc. ..........  6
         2.5.     Computation of Consideration ..............................  6
         2.6.     Adjustments for Combinations. Etc. ........................  8
         2.7.     Dilution in Case of Other Securities ......................  8
         2.8.     Minimum Adjustment of Warrant Price .......................  8

3.       Consolidation, Merger, Sale of Assets, Reorganization, Etc. ........  8
         3.1.     General Provisions.........................................  8
         3.2.     Assumption of Obligations .................................  9

4.       Other Dilutive Events .............................................  10

5.       No Dilution or Impairment .........................................  10

6.       Accountants' Report as to Adjustments..............................  10

7.       Notices of Corporate Action .......................................  11

8.       Restrictions on Transfer ..........................................  11
         8.1.     Restrictive Legends.......................................  11
         8.2.     Notice of Proposed Transfer; Opinions of Counsel .........  12
         8.3.     Termination of Restrictions...............................  13

9.       Registration Under Securities Act, Etc. ...........................  13
         9.1      Registration on Request ..................................  13
         9.2      Incidental Registration ..................................  15

                                       2
                                      -93-
<PAGE>

         9.3.     Registration Procedures ..................................  16
         9.4.     Underwritten Offerings ...................................  19
         9.5.     Preparation; Reasonable Investigation ....................  19
         9.6.     Indemnification ..........................................  20
         9.7.     Registration Rights to Others ............................  22
         9.8.     Rule 144 .................................................  22

10.      Availability of Information .......................................  22

11.      Reservation of Stock. Etc. ........................................  22

12.      Listing on Securities Exchange ....................................  23

13.      Ownership, Transfer and Substitution of Warrants ..................  23
         13.1.    Ownership of Warrants ....................................  23
         13.2.    Transfer and Exchange of Warrants ........................  23
         13.3.    Replacement of Warrants ..................................  23

14.      Definitions .......................................................  23

15.      Remedies ..........................................................  28

16.      No Rights or Liabilities as Stockholder ...........................  28

17.      Notices  ............................................................28

18.      Expiration ........................................................  29

19.      Miscellaneous .....................................................  29

                                       3
                                      -94-
<PAGE>


THIS WARRANT AND ANY SHARES  ACQUIRED UPON THE EXERCISE OF THIS WARRANT HAVE NOT
BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933 AND MAY NOT BE  TRANSFERRED
EXCEPT IN COMPLIANCE WITH SUCH ACT AND APPLICABLE  STATE  SECURITIES  LAWS. THIS
WARRANT  AND  SUCH  SHARES  ARE  ALSO   SUBJECT  TO  CERTAIN   RESTRICTIONS   ON
TRANSFERABILITY SET FORTH IN THIS WARRANT.

                          Common Stock Purchase Warrant

                           Expiring November 17, 2000

                                                           Stamford, Connecticut
                                                                January 20, 2000

         SMARTSERV  ONLINE,  INC., a Delaware  corporation (the "Company"),  for
value received, hereby certifies that Data Transmission Network Corporation,  or
registered  assigns,  is  entitled to purchase  from the  Company  300,000  duly
authorized, validly issued, fully paid and nonassessable shares of Common Stock,
par value $.01 per share,  of the Company (the  "Common  Stock") at the purchase
price per share of $8.60,  at any time or from time to time prior to 3 P.M., New
York City time, on November 17, 2000,  all subject to the terms,  conditions and
adjustments set forth below in this Warrant.

         This Warrant is issued pursuant to that certain  Agreement dated May 1,
1999,  between the Company and Data Transmission  Network  Corporation (the "DTN
Agreement").  Certain  capitalized  terms used in this  Warrant  are  defined in
Section 14. If a capitalized term used in this Warrant is not defined in Section
14, or elsewhere in this  Warrant,  such term shall have the meaning  given such
term in the DTN Agreement.

         1. Exercise of Warrant.


               1.1.  Manner of  Exercise.  This  Warrant may be exercised by the
holder hereof, in whole or in part, during normal business hours on any Business
Day prior to the  expiration of this Warrant by surrender of this Warrant,  with
the  form of  subscription  at the end  hereof  (or a  facsimile  thereof)  duly
executed by such  holder,  to the Company at its  principal  office (or, if such
exercise shall be in connection with an  underwritten  Public Offering of shares
of Common Stock (or Other Securities)  subject to this Warrant,  at the location
at which the Company shall have agreed to deliver the shares of Common Stock (or
Other Securities) subject to such offering),  accompanied by payment, in cash or
by certified or official bank check payable to the order of the Company,  in the
amount obtained by multiplying (a) the number of shares of Common Stock (without
giving effect to any adjustment therein) designated in such form of subscription
by (b) the Warrant Price, and such holder shall thereupon be entitled to receive

                                       4
                                      -95-
<PAGE>

the number of duly  authorized,  validly  issued,  fully paid and  nonassessable
shares of Common Stock (or Other Securities)  determined as provided in Sections
2 through 4.

               1.2. When Exercise Deemed Effected. Each exercise of this Warrant
shall be deemed to have been effected immediately prior to the close of business
on the  Business Day on which this Warrant  shall have been  surrendered  to the
Company as  provided in Section  1.1,  and at such time the person or persons in
whose name or names any certificate or  certificates  for shares of Common Stock
(or Other  Securities)  shall be  issuable  upon such  exercise  as  provided in
Section  1.3 shall be deemed to have  become  the  holder or  holders  of record
thereof.

               1.3. Delivery of Stock Certificates,  Etc. As soon as practicable
after the exercise of this Warrant, in whole or in part, and in any event within
ten (10) Business Days  thereafter  (unless such exercise shall be in connection
with an  underwritten  Public  Offering  of  shares  of  Common  Stock (or Other
Securities)  subject to this  Warrant,  in which  event  concurrently  with such
exercise),  the Company at its expense (including the payment by it of any taxes
(other than transfer  taxes)  payable by the Company) will cause to be issued in
the name of and delivered to the holder hereof or, subject to Section 8, as such
holder  (upon  payment  by such  holder of any  applicable  transfer  taxes) may
direct,

               (a)  a  certificate  or  certificates  for  the  number  of  duly
         authorized,  validly  issued,  fully paid and  nonassessable  shares of
         Common  Stock (or  Other  Securities)  to which  such  holder  shall be
         entitled upon such exercise  plus, in lieu of any  fractional  share to
         which such holder would otherwise be entitled,  cash in an amount equal
         to the same fraction of the Market Price per share of such Common Stock
         (or Other  Securities)  on the Business Day next  preceding the date of
         such exercise, and

               (b) in case such  exercise is in part only, a new Warrant of like
         tenor,  calling in the  aggregate on the face thereof for the number of
         shares of Common Stock equal  (without  giving effect to any adjustment
         therein)  to the number of such  shares  called for on the face of this
         Warrant  minus the number of such shares  designated by the holder upon
         such exercise as provided in Section 1.1.

               1.4.  Company to Reaffirm  Obligations.  The Company will, at the
time of or at any time after each exercise of this Warrant,  upon the request of
the holder hereof or of any shares of Common Stock (or Other Securities)  issued
upon such exercise,  acknowledge in writing its continuing  obligation to afford
to  such  holder  all  rights  (including,  without  limitation,  any  right  of
registration of any shares of Common Stock (or Other  Securities)  issuable upon
exercise  of this  Warrant  pursuant  to Section 9) to which such  holder  shall
continue to be entitled after such exercise in accordance with the terms of this
Warrant,  provided  that if any such holder shall fail to make any such request,
the failure shall not affect the continuing  obligation of the Company to afford
such rights to such holder.

                                       5
                                      -96-
<PAGE>




         2. Adjustments.


               2.1.  Number of Shares;  Warrant  Price.  The number of shares of
Common Stock which the holder of this Warrant  shall be entitled to receive upon
each exercise  hereof shall be determined by multiplying the number of shares of
Common Stock which would otherwise (but for the provisions of this Section 2) be
issuable upon such  exercise,  as  designated  by the holder hereof  pursuant to
Section  1.1,  by a fraction  of which (a) the  numerator  is $8.60 and (ii) the
denominator  is the Warrant  Price in effect on the date of such  exercise.  The
"Warrant  Price" shall  initially be $8.60 per share,  and shall be adjusted and
readjusted  from time to time as provided in this  Section 2 and, as so adjusted
or readjusted, shall remain in effect until a further adjustment or readjustment
thereof is required by this Section 2.

               2.2.  Adjustment of Warrant Price.


                     2.2.1.  Issuance of Additional  Shares of Common Stock.  In
case the  Company,  at any time or from time to time after  April 30,  1999 (the
"Initial  Date"),  shall  issue  or  sell  Additional  Shares  of  Common  Stock
(including  Additional  Shares of Common Stock  deemed to be issued  pursuant to
Section 2.3 or 2.4) without  consideration or for a consideration per share less
than the Base Price in  effect,  in each  case,  on the date of and  immediately
prior to such issue or sale,  then,  and in each such  case,  subject to Section
2.8, such Warrant Price shall be reduced,  concurrently with such issue or sale,
to a price  (calculated to the nearest .001 of a cent) determined by multiplying
such Warrant Price by a fraction,

               (a) the  numerator  of which shall be (i) the number of shares of
         Common Stock  outstanding  immediately prior to such issue or sale plus
         (ii)  the  number  of  shares  of  Common  Stock  which  the  aggregate
         consideration  received  by the  Company  for the total  number of such
         Additional  Shares of Common Stock so issued or sold would  purchase at
         the Base Price, and

               (b) the  denominator  of which  shall be the  number of shares of
         Common Stock outstanding immediately after such issue or sale,

provided that, for the purposes of this Section 2.2.1 (x) immediately  after any
Additional  Shares of Common  Stock are deemed to have been  issued  pursuant to
Section 2.3 or 2.4, such  Additional  Shares shall be deemed to be  outstanding,
and (y) treasury shares shall not be deemed to be outstanding.

                     2.2.2.  Extraordinary Dividends and Distributions.  In case
the  Company  at any time or from time to time  after  the  Initial  Date  shall
declare, order, pay or make a dividend or other distribution (including, without
limitation, any distribution of other or additional stock or other securities or
property  or  options  by  way  of  dividend  or   spin-off,   reclassification,
recapitalization or similar corporate  rearrangement) on any Common Stock, other
than (a) a dividend  payable in Additional  Shares of Common Stock or in Options
for Common Stock or (b) a dividend payable in cash, then, and in each such case,

                                       6
                                      -97-
<PAGE>

subject to Section 2.8,  the Warrant  Price in effect  immediately  prior to the
close of business on the record date fixed for the  determination  of holders of
any class of securities  entitled to receive such dividend or distribution shall
be reduced,  effective  as of the close of business  on such record  date,  to a
price  (calculated to the nearest .001 of a cent) determined by multiplying such
Warrant Price by a fraction,

               (x) the  numerator of which shall be the Current  Market Price in
         effect  on such  record  date or,  if the  Common  Stock  trades  on an
         ex-dividend basis, on the date prior to the commencement of ex-dividend
         trading, less the value of such dividend or distribution (as determined
         in good faith by the Board of Directors of the Company)  applicable  to
         one share of Common Stock, and

               (y) the denominator of which shall be such Current Market Price.

               2.3. Treatment of Options and Convertible Securities. In case the
Company at any time or from time to time  after the  Initial  Date shall  issue,
sell,  grant or  assume,  or shall fix a record  date for the  determination  of
holders  of any  class  of  securities  entitled  to  receive,  any  Options  or
Convertible  Securities,  then,  and in each such case,  the  maximum  number of
Additional  Shares of Common  Stock  (as set  forth in the  instrument  relating
thereto,  without  regard to any provisions  contained  therein for a subsequent
adjustment of such number) issuable upon the exercise of such Options or, in the
case of Convertible  Securities and Options therefor, the conversion or exchange
of such  Convertible  Securities,  shall be deemed to be issued for  purposes of
Section 2.2 as of the time of such issue,  sale, grant or assumption or, in case
such a record  date shall have been  fixed,  as of the close of business on such
record date (or, if the Common Stock trades on an ex-dividend basis, on the date
prior to the commencement of ex-dividend trading), provided that such Additional
Shares of Common  Stock  shall not be  deemed  to have been  issued  unless  the
consideration  per share  (determined  pursuant  to Section  2.5) of such shares
would be less than the Base  Price in effect,  in each case,  on the date of and
immediately prior to such issue,  sale, grant or assumption or immediately prior
to the close of business on such record date (or, if the Common  Stock trades on
an  ex-dividend  basis,  on the date prior to the  commencement  of  ex-dividend
trading),  as the case may be, and provided,  further,  that in any such case in
which Additional Shares of Common Stock are deemed to be issued,

               (a) no further adjustment of the Warrant Price shall be made upon
         the  subsequent  issue or sale of Additional  Shares of Common Stock or
         Convertible  Securities  upon  the  exercise  of  such  Options  or the
         conversion or exchange of such Convertible Securities;

               (b) if such  Options or  Convertible  Securities  by their  terms
         provide, with the passage of time or otherwise, for any increase in the
         consideration  payable to the  Company,  or  decrease  in the number of
         Additional  Shares  of  Common  Stock  issuable,   upon  the  exercise,
         conversion or exchange  thereof (by change of rate or  otherwise),  the
         Warrant  Price  computed  upon  the  original  issue,  sale,  grant  or
         assumption  thereof (or upon the occurrence of the record date, or date
         prior to the commencement of ex-dividend  trading,  as the case may be,
         with respect  thereto),  and any subsequent  adjustments based thereon,

                                       7
                                      -98-
<PAGE>

         shall,  upon any such  increase  or  decrease  becoming  effective,  be
         recomputed to reflect such  increase or decrease  insofar as it affects
         such  Options,  or the  rights of  conversion  or  exchange  under such
         Convertible Securities, which are outstanding at such time;

               (c) upon the  expiration  of any such Options or of the rights of
         conversion  or exchange  under any such  Convertible  Securities  which
         shall not have been  exercised  (or upon  purchase  by the  Company and
         cancellation  or  retirement  of any such Options  which shall not have
         been  exercised  or of any such  Convertible  Securities  the rights of
         conversion or exchange under which shall not have been exercised),  the
         Warrant  Price  computed  upon  the  original  issue,  sale,  grant  or
         assumption  thereof (or upon the occurrence of the record date, or date
         prior to the commencement of ex-dividend  trading,  as the case may be,
         with respect  thereto),  and any subsequent  adjustments based thereon,
         shall, upon such expiration (or such cancellation or retirement, as the
         case may be), be recomputed as if:

                           (x) in the case of  Options  for  Common  Stock or of
                  Convertible  Securities,  the only Additional Shares of Common
                  Stock  issued  or sold  were the  Additional  Shares of Common
                  Stock,  if any,  actually  issued or sold upon the exercise of
                  such Options or the conversion or exchange of such Convertible
                  Securities and the consideration  received therefor was (i) an
                  amount equal to (A) the consideration actually received by the
                  Company for the issue,  sale,  grant or assumption of all such
                  Options, whether or not exercised,  plus (B) the consideration
                  actually received by the Company upon such exercise, minus (C)
                  the consideration paid by the Company for any purchase of such
                  Options which were not  exercised,  or (ii) an amount equal to
                  (A) the consideration actually received by the Company for the
                  issue,  sale,  grant or  assumption  of all  such  Convertible
                  Securities  which were actually  converted or exchanged,  plus
                  (B) the additional consideration, if any, actually received by
                  the Company upon such  conversion  or exchange,  minus (C) the
                  consideration  paid by the  Company  for any  purchase of such
                  Convertible  Securities  the rights of  conversion or exchange
                  under which were not exercised, and

                           (y)  in  the   case  of   Options   for   Convertible
                  Securities,  only the Convertible Securities, if any, actually
                  issued or sold upon the  exercise of such  Options were issued
                  at the time of the issue,  sale,  grant or  assumption of such
                  Options, and the consideration received by the Company for the
                  Additional  Shares  of Common  Stock  deemed to have then been
                  issued was an amount equal to (i) the  consideration  actually
                  received  by  the  Company  for  the  issue,  sale,  grant  or
                  assumption of all such Options, whether or not exercised, plus
                  (ii) the  consideration  deemed to have been  received  by the
                  Company  (pursuant  to Section  2.4) upon the issue or sale of
                  the Convertible  Securities with respect to which such Options
                  were actually exercised, minus (iii) the consideration paid by
                  the Company for any  purchase of such  Options  which were not
                  exercised;

                                       8
                                      -99-
<PAGE>

                  (d) no  readjustment  pursuant to subdivision (b) or (c) above
         shall have the effect of  increasing  the Warrant Price by an amount in
         excess  of the  amount of the  adjustment  thereof  originally  made in
         respect of the issue,  sale,  grant or  assumption  of such  Options or
         Convertible  Securities,  except as a result of any intervening  events
         causing adjustments therein; and

                  (e) in the  case of any such  Options  which  expire  by their
         terms not more than 30 days  after  the date of issue,  sale,  grant or
         assumption  thereof,  no  adjustment of the Warrant Price shall be made
         until the  expiration or exercise of all such Options,  whereupon  such
         adjustment  shall be made in the manner  provided  in  subdivision  (c)
         above.

         In case at any  time  after  the  Initial  Date  the  Company  shall be
required to increase the number of Additional  Shares of Common Stock subject to
any Option or into which any  Convertible  Securities  (other than the Warrants)
are  convertible  or  exchangeable  pursuant to the  operation of  anti-dilution
provisions  applicable thereto,  such Additional Shares of Common Stock shall be
deemed to be issued for purposes of Section 2.2 as of the time of such increase.

               2.4. Treatment of Stock Dividends, Stock Splits, Etc. In case the
         Company at any time or from time to time after the  Initial  Date shall
         declare or pay any dividend or other distribution on any class of stock
         of the Company  payable in Common Stock,  or shall effect a subdivision
         of the  outstanding  shares of Common  Stock  into a greater  number of
         shares  of Common  Stock  (by  reclassification  or  otherwise  than by
         payment of a dividend in Common  Stock),  then,  and in each such case,
         Additional  Shares of Common  Stock shall be deemed to have been issued
         (a) in the case of any such  dividend,  immediately  after the close of
         business  on the record  date for the  determination  of holders of any
         class of securities  entitled to receive such  dividend,  or (b) in the
         case of any  such  subdivision,  at the  close of  business  on the day
         immediately  prior to the day upon which such corporate  action becomes
         effective.

               2.5.  Computation  of  Consideration.  For the  purposes  of this
         Section 2:


                  (a) The  consideration for the issue or sale of any Additional
         Shares of Common Stock or for the issue,  sale,  grant or assumption of
         any Options or Convertible  Securities,  irrespective of the accounting
         treatment of such consideration, shall

                           (x) insofar as it  consists  of cash,  be computed at
                  the amount of cash received by the Company,  without deducting
                  any   expenses   paid  or  incurred  by  the  Company  or  any
                  commissions or  compensation  paid or concessions or discounts
                  allowed to underwriters,  dealers or others performing similar
                  services and any accrued  interest or dividends in  connection
                  with such issue or sale,

                           (y)   insofar  as  it   consists   of   consideration
                  (including  securities)  other than cash,  be  computed at the
                  fair  value  thereof  at the time of such  issue  or sale,  as
                  determined  in good  faith by the  Board of  Directors  of the
                  Company,  without  deducting  any expenses paid or incurred by
                  the  Company  for  any  commissions  or  compensation  paid or

                                       9
                                     -100-
<PAGE>

                  concessions or discounts  allowed to underwriters,  dealers or
                  others performing similar services and any accrued interest or
                  dividends in connection with such issue or sale, and

                           (z) in case  Additional  Shares of  Common  Stock are
                  issued or sold or  Convertible  Securities  are issued,  sold,
                  granted or assumed  together with other stock or securities or
                  other assets of the Company for a  consideration  which covers
                  both,  be the  proportion of such  consideration  so received,
                  computed  as  provided  in  subdivisions  (x) and  (y)  above,
                  allocable  to  such  Additional  Shares  of  Common  Stock  or
                  Convertible Securities,  as the case may be, all as determined
                  in good faith by the Board of Directors of the Company.

                  (b) All Options issued, sold, granted or assumed together with
         other  stock  or  securities  or  other  assets  of the  Company  for a
         consideration  which  covers  both  and  which  does  not set  forth an
         allocation  of  such   consideration  in  the  documentation  for  such
         transaction,   all  Additional  Shares  of  Common  Stock,  Options  or
         Convertible  Securities  issued in  payment  of any  dividend  or other
         distribution  on any class of stock of the Company  and all  Additional
         Shares  of  Common  Stock  issued  to  effect  a  subdivision   of  the
         outstanding  shares of Common Stock into a greater  number of shares of
         Common Stock (by  reclassification  or  otherwise  than by payment of a
         dividend in Common  Stock) shall be deemed to have been issued  without
         consideration.

                  (c)  Additional  Shares  of Common  Stock  deemed to have been
         issued for  consideration  pursuant to Section 2.3, relating to Options
         and Convertible  Securities,  shall be deemed to have been issued for a
         consideration per share determined by dividing

                           (x) the total amount, if any, received and receivable
                  by the Company as consideration for the issue,  sale, grant or
                  assumption  of  the  Options  or  Convertible   Securities  in
                  question,  plus the  minimum  aggregate  amount of  additional
                  consideration  (as  set  forth  in  the  instruments  relating
                  thereto, without regard to any provision contained therein for
                  a subsequent adjustment of such consideration)  payable to the
                  Company  upon  the  exercise  in full of such  Options  or the
                  conversion or exchange of such  Convertible  Securities or, in
                  the case of Options for Convertible  Securities,  the exercise
                  of such Options for Convertible  Securities and the conversion
                  or  exchange  of such  Convertible  Securities,  in each  case
                  computing  such  consideration  as provided  in the  foregoing
                  subdivision (a), by

                           (y) the maximum  number of shares of Common Stock (as
                  set forth in the instruments relating thereto,  without regard
                  to any provision contained therein for a subsequent adjustment
                  of such number)  issuable upon the exercise of such Options or
                  the conversion or exchange of such Convertible Securities.

                  (d) Additional Shares of Common Stock issued or deemed to have
         been  issued  pursuant to the  operation  of  anti-dilution  provisions
         applicable to Convertible Securities (other than the Warrants), Options


                                       10
                                     -101-
<PAGE>

         or  other  securities  of  the  Company  (either  as a  result  of  the
         adjustments  provided for by the Warrants or otherwise) shall be deemed
         to have been issued without consideration.

               2.6.  Adjustments for Combinations,  Etc. In case the outstanding
shares of Common Stock shall be combined or consolidated, by reclassification or
otherwise,  into a lesser number of shares of Common Stock, the Warrant Price in
effect   immediately   prior  to  such  combination  or   consolidation   shall,
concurrently  with the  effectiveness of such combination or  consolidation,  be
proportionately increased.

               2.7.  Dilution  in Case of Other  Securities.  In case any  Other
Securities shall be issued or sold or shall become subject to issue or sale upon
the  conversion  or exchange of any Common  Stock (or Other  Securities)  of the
Company (or any issuer of Other  Securities  or any other Person  referred to in
Section 3) or to  subscription,  purchase or other  acquisition  pursuant to any
options  issued or granted by the Company  (or any such other  issuer or Person)
for a consideration  such as to dilute, on a basis consistent with the standards
established  in the other  provisions  of this  Section 2, the  purchase  rights
granted  by  this  Warrant,  then,  and in each  such  case,  the  computations,
adjustments and readjustments provided for in this Section 2 with respect to the
Warrant  Price shall be made as nearly as possible in the manner so provided and
applied to determine the amount of Other Securities from time to time receivable
upon the exercise of this  Warrant,  so as to protect the holder of this Warrant
against the effect of such dilution.

               2.8.  Minimum  Adjustment of Warrant Price.  If the amount of any
adjustment  of the Warrant  Price  required  pursuant to this Section 2 would be
less than  one-tenth  of one percent of the Warrant  Price in effect at the time
such  adjustment  is  otherwise  so  required to be made,  such amount  shall be
carried  forward and  adjustment  with  respect  thereto made at the time of and
together with any subsequent adjustment which, together with such amount and any
other amount or amounts so carried  forward,  shall aggregate at least one-tenth
of one percent of such Warrant Price;  provided that,  upon the exercise of this
Warrant,  all adjustments  carried  forward and not  theretofore  made up to and
including  the  date  of  such  exercise  shall  be  made  to  the  nearest  one
one-hundredth of a cent.

         3. Consolidation, Merger, Sale of Assets, Reorganization. Etc.


               3.1. General Provisions.  In case the Company,  after the Initial
Date, (a) shall consolidate with or merge into any other Person and shall not be
the continuing or surviving  corporation of such consolidation or merger, or (b)
shall permit any other Person to consolidate  with or merge into the Company and
the Company shall be the continuing or surviving  Person but, in connection with
such consolidation or merger,  Common Stock or Other Securities shall be changed
into or exchanged for cash, stock or other securities of any other Person or any
other property, or (c) shall transfer all or substantially all of its properties
and assets to any other Person, or (d) shall effect a capital  reorganization or
reclassification  of  Common  Stock or Other  Securities  (other  than a capital
reorganization or  reclassification  resulting in the issue of Additional Shares
of Common Stock for which adjustment in the Warrant Price is provided in Section
2.2.1 or 2.2.2),  then,  and in the case of each such  transaction,  the Company


                                       11
                                     -102-
<PAGE>

shall give written notice thereof to the holder of this Warrant not less than 30
days prior to the  consummation  thereof and proper  provision  shall be made so
that, upon the basis and the terms and in the manner provided in this Section 3,
the  holder of this  Warrant,  upon the  exercise  hereof at any time  after the
consummation of such transaction, shall be entitled to receive, at the aggregate
Warrant  Price in effect at the time of such  consummation  for all Common Stock
(or other  Securities)  issuable  upon such exercise  immediately  prior to such
consummation,  in lieu of the Common Stock (or Other  Securities)  issuable upon
such exercise prior to such consummation, the highest amount of cash, securities
or other  property to which such holder would  actually  have been entitled as a
shareholder  upon such  consummation  if such holder had exercised  this Warrant
immediately   prior  thereto,   subject  to  adjustments   (subsequent  to  such
consummation) as nearly  equivalent as possible to the adjustments  provided for
in Section 2 and this Section 3, provided that if a purchase, tender or exchange
offer shall have been made to and  accepted by the holders of Common Stock under
circumstances  in which,  upon  completion of such purchase,  tender or exchange
offer, the maker thereof, together with members of any group (within the meaning
of Section  13(d)(3)  of the  Exchange  Act) of which such maker is a part,  and
together  with any  affiliate or associate of such maker  (within the meaning of
Rule 12b-2  under the  Exchange  Act) and any members of any such group of which
any such affiliate or associate is a part, own beneficially  (within the meaning
of Rule 13d-3 under the Exchange Act) more than 50% of the outstanding shares of
Common  Stock,  and if the holder of this Warrant so  designates  in such notice
given to the Company,  the holder of this  Warrant  shall be entitled to receive
the highest  amount of cash,  securities or other  property to which such holder
would actually have been entitled as a shareholder if the holder of this Warrant
had exercised this Warrant prior to the  expiration of such purchase,  tender or
exchange  offer,  accepted  such offer and all of the Common  Stock held by such
holder had been purchased  pursuant to such purchase,  tender or exchange offer,
subject to adjustments (from and after the consummation of such purchase, tender
or exchange offer) as nearly equivalent as possible to the adjustments  provided
for in Section 2 and this Section 3.

               3.2.   Assumption  of   Obligations.   Notwithstanding   anything
contained in this Warrant or the DTN Agreement to the contrary, the Company will
not effect any of the transactions  described in subdivisions (a), (b) or (d) of
Section 3.1 unless, prior to the consummation  thereof,  each Person (other than
the  Company)  which  may be  required  to  deliver  any  cash,  stock  or other
securities  or other  property  upon the  exercise  of this  Warrant as provided
herein  shall  assume,  by  written  instrument  delivered  to,  and  reasonably
satisfactory to, the holder of this Warrant,  (a) the obligations of the Company
under this Warrant (and if the Company  shall survive the  consummation  of such
transaction,  such assumption shall be in addition to, and shall not release the
Company from, any continuing  obligations of the Company under this Warrant) and
(b) the  obligation  to  deliver  to such  holder  such  cash,  stock  or  other
securities or other property as, in accordance with the foregoing  provisions of
this  Section 3, such holder may be entitled to receive,  and such Person  shall
have  similarly  delivered to such holder an opinion of counsel for such Person,
which counsel shall be reasonably satisfactory to such holder, stating that this
Warrant shall thereafter  continue in full force and effect and the terms hereof
(including,  without  limitation,  all of the  provisions  of Section 2 and this
Section 3) shall be applicable to the cash,  stock or other  securities or other
property  which such Person may be required to deliver upon any exercise of this
Warrant or the exercise of any rights pursuant hereto.

                                       12
                                     -103-
<PAGE>

         4. Other Dilutive Events. In case any event shall occur as to which the
provisions of Section 2 or Section 3 are not strictly applicable but the failure
to make any adjustment would not fairly protect the purchase rights  represented
by this Warrant in accordance  with the essential  intent and principles of such
sections,  then,  in  each  such  case,  the  Company  shall  appoint  a firm of
independent public accountants of recognized national standing (which may be the
regular  auditors  of the  Company),  which  shall give their  opinion  upon the
adjustment,  if  any,  on a basis  consistent  with  the  essential  intent  and
principles  established  in Sections 2 and 3,  necessary  to  preserve,  without
dilution,  the purchase rights represented by this Warrant. Upon receipt of such
opinion  the Company  will  promptly  mail a copy  thereof to the holder of this
Warrant and shall make the adjustments described therein.

         5. No Dilution or Impairment. The Company will not, by amendment of its
certificate   of   incorporation   or   through   any   consolidation,   merger,
reorganization,  transfer of assets, dissolution, issue or sale of securities or
any other voluntary action, avoid or seek to avoid the observance or performance
of any of the terms of this Warrant,  but will at all times in good faith assist
in the  carrying  out of all such terms and in the taking of all such  action as
may be necessary or  appropriate in order to protect the rights of the holder of
this  Warrant  against  dilution  or  other  impairment.  Without  limiting  the
generality  of the  foregoing,  the Company (a) will not permit the par value of
any shares of stock  receivable  upon the exercise of this Warrant to exceed the
amount payable therefor upon such exercise, (b) will take all such action as may
be  necessary or  appropriate  in order that the Company may validly and legally
issue  fully paid and  nonassessable  shares of stock upon the  exercise  of all
outstanding warrants issued by the Company (including this Warrant) from time to
time,  and (c) will not take any action which  results in any  adjustment of the
Warrant  Price  if the  total  number  of  shares  of  Common  Stock  (or  Other
Securities)  issuable  after the action  upon the  exercise  of all  outstanding
warrants  issued by the Company  (including this Warrant) would exceed the total
number of shares of Common Stock (or Other  Securities)  then  authorized by the
Company's  certificate of  incorporation  and available for the purpose of issue
upon such exercise.

         6.  Accountants'  Report  as  to  Adjustments.  In  each  case  of  any
adjustment or readjustment  in the shares of Common Stock (or Other  Securities)
issuable  upon the  exercise of this  Warrant,  the Company at its expense  will
promptly compute such adjustment or readjustment in accordance with the terms of
this Warrant,  and will prepare a certificate of the chief financial  officer of
the  Company  setting  forth such  adjustment  or  readjustment  and  showing in
reasonable  detail the method of  calculation  thereof  and the facts upon which
such  adjustment  or  readjustment  is based,  including  without  limitation  a
statement of (a) the consideration received or to be received by the Company for
any  Additional  Shares  of Common  Stock  issued or sold or deemed to have been
issued,  (b) the number of shares of Common  Stock  outstanding  or deemed to be
outstanding, and (c) the Warrant Price in effect immediately prior to such issue
or sale and as adjusted  and  readjusted  (if  required by Section 2) on account
thereof. The Company will forthwith mail a copy of each such certificate to each
holder of a Warrant and will, upon the written request at any time of the holder
of this  Warrant,  furnish to such holder a like  certificate  setting forth the
Warrant Price at the time in effect and showing in reasonable  detail how it was
calculated.  In addition,  with respect to any fiscal year of the Company during

                                       13
                                     -104-
<PAGE>

which any such adjustment or readjustment shall have been made, the Company will
cause the independent public accountants  reporting upon the Company's financial
statements for such fiscal year to verify,  concurrently with their annual audit
of the Company's  financial  statements,  the  computations  made by the Company
during  such  fiscal  year and to  prepare  and to deliver to the holder of this
Warrant a report setting forth substantially the information  described above in
this  Section 6 with  respect to all such  adjustments  and  readjustments.  The
Company  will  also keep  copies of all such  certificates  and  reports  at its
principal  office and will cause the same to be available for inspection at such
office  during  normal  business  hours by the  holder  of this  Warrant  or any
prospective purchaser of this Warrant designated by the holder thereof.

         7. Notices of Corporate Action. In the event of


                  (a) any taking by the  Company  of a record of the  holders of
         any class of  securities  for the  purpose of  determining  the holders
         thereof who are entitled to receive any dividend or other distribution,
         or any right to subscribe for, purchase or otherwise acquire any shares
         of stock of any  class  or any  other  securities  or  property,  or to
         receive any other right, or

                  (b)  any   capital   reorganization   of  the   Company,   any
         reclassification  or  recapitalization  of  the  capital  stock  of the
         Company or any  consolidation  or merger  involving the Company and any
         other Person or any transfer of all or substantially  all the assets of
         the Company to any other Person, or

                  (c) any voluntary or involuntary  dissolution,  liquidation or
         winding-up of the Company,

the Company will mail to the holder of this Warrant a notice  specifying (x) the
date or expected date on which any such record is to be taken for the purpose of
such  dividend,  distribution  or right,  and the amount and  character  of such
dividend,  distribution or right, and (y) the date or expected date on which any
such reorganization, reclassification,  recapitalization, consolidation, merger,
transfer, dissolution,  liquidation or winding-up is to take place and the time,
if any such time is to be fixed,  as of which  the  holders  of record of Common
Stock (or Other Securities) shall be entitled to exchange their shares of Common
Stock (or Other  Securities)  for the securities or other  property  deliverable
upon such  reorganization,  reclassification,  recapitalization,  consolidation,
merger, transfer,  dissolution,  liquidation or winding-up. Such notice shall be
mailed at least 20 days prior to the date therein specified,  in the case of any
date referred to in the foregoing subdivision (x), and at least 30 days prior to
the date therein specified, in the case of the date referred to in the foregoing
subdivision (y).

         8. Restrictions on Transfer.


               8.1. Restrictive  Legends.  Except as otherwise permitted by this
Section 8, each certificate for Common Stock (or Other  Securities)  issued upon
the  exercise  of this  Warrant and each  certificate  issued upon the direct or
indirect  Transfer  of any such  Common  Stock  (or Other  Securities)  shall be

                                       14
                                     -105-
<PAGE>

stamped or otherwise  imprinted  with a legend in  substantially  the  following
form:

         "The shares  represented by this  certificate  have not been registered
         under the Securities  Act of 1933 and may not be transferred  except in
         compliance  with such Act and applicable  state  securities  laws. Such
         shares  are also  subject to certain  restrictions  on  transferability
         imposed by a Common Stock Purchase Warrant expiring  November 17, 2000,
         a copy of which is on file at the offices of the Company."

               8.2. Notice of Proposed Transfer;  Opinions of Counsel.  Prior to
any Transfer of any  Restricted  Securities  which are not  registered  under an
effective registration statement under the Securities Act (other than a Transfer
pursuant to Rule 144 or any comparable  rule under such Act), the holder thereof
will give  written  notice to the Company of such  holder's  intention to effect
such  Transfer and to comply in all other  respects  with this Section 8.2. Each
such notice (a) shall  describe  the manner and  circumstances  of the  proposed
Transfer in sufficient  detail to enable counsel to render the opinions referred
to below, and (b) shall designate counsel for the holder giving such notice (who
may be internal  counsel for such  holder).  The holder  giving such notice will
submit a copy thereof to the counsel  designated  in such notice and the Company
will promptly  submit a copy thereof to its counsel.  The  following  provisions
shall then apply:

                           (x) If in the opinion of such  counsel for the holder
                  the proposed Transfer may be effected without  registration (a
                  copy of which opinion shall be delivered to the Company),  and
                  if such  opinion is  reasonably  satisfactory  to the Company,
                  such holder  shall  thereupon  be  entitled  to Transfer  such
                  Restricted  Securities  in  accordance  with the  terms of the
                  notice  delivered by such holder to the Company.  Each Warrant
                  or certificate, if any, issued upon or in connection with such
                  Transfer  shall bear the  appropriate  restrictive  legend set
                  forth in Section  8.1 unless,  in the opinion of such  counsel
                  and the Company's  counsel,  such legend is no longer required
                  to ensure compliance with the Securities Act.

                           (y) If the opinion of such  counsel for the holder is
                  not to the effect that the  proposed  Transfer  may legally be
                  effected  without  registration of such Restricted  Securities
                  under the Securities Act, such holder shall not be entitled to
                  Transfer such Restricted  Securities (other than in a Transfer
                  pursuant  to  Rule  144  or  any  comparable  rule  under  the
                  Securities Act) until the conditions  specified in subdivision
                  (x) above shall be  satisfied  or until  registration  of such
                  Restricted  Securities  under the  Securities  Act has  become
                  effective.

Notwithstanding the foregoing  provisions of this Section 8.2, the holder of any
Restricted  Securities  shall be  permitted  to  Transfer  any  such  Restricted
Securities  pursuant to Rule 144A under the Securities  Act,  provided that each
transferee  agrees in writing to be bound by all the restrictions on transfer of
such Restricted Securities contained in this Section 8.2.

                                       15
                                     -106-
<PAGE>

               8.3.  Termination of Restrictions.  The  restrictions  imposed by
this Section 8 upon the transferability of Restricted Securities shall cease and
terminate as to any particular  Restricted  Securities (a) when such  securities
shall have been effectively  registered under the Securities Act and disposed of
in  accordance  with  the  registration   statement   covering  such  Restricted
Securities, (b) when, in the opinions of both counsel for the holder thereof and
counsel for the Company,  such  restrictions  are no longer required in order to
ensure  compliance  with the Securities  Act, or (c) when such securities may be
immediately sold by the holder as determined under Rule 144 under the Securities
Act. Whenever such restrictions shall terminate as to any Restricted Securities,
as soon as practicable thereafter and in any event within ten Business Days, the
holder  thereof shall be entitled to receive from the Company,  without  expense
(other than transfer  taxes,  if any),  new securities of like tenor not bearing
the legend set forth in Section 8.1 hereof.

         9. Registration under Securities Act, Etc.


               9.1 Registration on Request.


         (a)  Request.  At any time and from time to time  after  September  30,
1999,  upon the written  request of DTN,  requesting that the Company effect the
registration  under  the  Securities  Act  of  all or  part  of the  Registrable
Securities  and  specifying  the intended  method of  disposition  thereof,  the
Company  will  use its  best  efforts  to  effect  its  registration  under  the
Securities Act, including by means of a shelf registration  pursuant to Rule 415
under the  Securities  Act if so requested in such request (but in the case of a
shelf  registration  only if the Company is then eligible to use Form S-2 or S-3
(or any successor forms)),  of the Registrable  Securities which the Company has
been so  requested to register by DTN for  disposition  in  accordance  with the
intended  method  of  disposition  stated  in such  request,  all to the  extent
requisite to permit the  disposition  (in accordance  with the intended  methods
thereof  as  aforesaid)  of  the  Registrable  Securities  so to be  registered;
provided  that the  Company  shall not be  required  to effect the  registration
pursuant to this  Section 9.1 of any  Warrants  (but shall be required to effect
the registration of Registrable  Securities  described in clauses (b) and (c) of
the definition of Registrable Securities),  and provided,  further, that DTN, by
written  notice to the Company  within 10  Business  Days after its receipt of a
copy of a notice from the  managing  underwriter  delivered  pursuant to Section
9.1(g),  may  withdraw  such  request  and,  on  receipt  of such  notice of the
withdrawal  of such  request  from DTN, the Company may elect not to effect such
registration.  Subject to  subdivision  (g),  the  Company  may  include in such
registration other securities for sale for its own account or for the account of
any other Person.

         (b) Number of  Registrations.  The  Company  shall not be  required  to
effect more than one  registration  pursuant to this Section 9.1,  provided that
such  registration  shall  permit  the  disposition  of  at  least  80%  of  the
Registrable  Securities  issuable to DTN upon  exercise of all of the  Warrants,
provided,  further,  that if one or more such  registrations,  in the aggregate,
shall not permit the disposition of at least 80% of such Registrable Securities,
the Company shall be required to effect one additional  registration pursuant to
this Section 9.1 so that the  aggregate  number of such  Registrable  Securities
shall be at least 80%.

                                       16
                                     -107-
<PAGE>

         (c) Registration  Statement Form. The Company may, if permitted by law,
effect any  registration  requested  under this  Section  9.1 by the filing of a
registration  statement  on Form S-3 (or any  successor  or  similar  short form
registration  statement)  unless, if such registration  involves an underwritten
Public Offering of such Registrable Securities, the managing underwriter of such
Public  Offering  shall notify the Company in writing  that,  in the judgment of
such managing  underwriter,  the use of a more  detailed form  specified in such
notice is of material  importance to the success of the Public  Offering of such
Registrable Securities, in which case such registration shall be effected on the
form so specified.

         (d)  Expenses.  The  Company  will  pay all  Registration  Expenses  in
connection with any registration and sale effected pursuant to this Section 9.1.

         (e)  Selection  of  Underwriters.  If, in the  discretion  of DTN,  any
offering pursuant to this Section 9.1 shall constitute an underwritten offering,
the underwriter or underwriters  thereof shall be selected,  after  consultation
with the Company, by DTN and shall be acceptable to the Company.

         (f) Effective Registration Statement. A registration requested pursuant
to this  Section 9.1 will not be deemed to have been  effected (x) unless it has
become effective,  provided that a registration  which does not become effective
after the Company has filed a registration statement with respect thereto solely
by reason of the refusal to proceed of DTN shall be deemed to have been effected
by the Company at the request of DTN,  unless DTN shall have  elected to pay all
Registration Expenses in connection with such registration, (y) if, after it has
become  effective,  such  registration  is  interfered  with by any stop  order,
injunction or other order or requirement of the Commission or other governmental
agency  or  court  entered  within  one  year  of  the   effectiveness  of  such
registration  if it is a shelf  registration  pursuant  to Rule  415  under  the
Securities  Act  or  entered  within  90  days  of  the  effectiveness  of  such
registration  if other than a shelf  registration,  or (z) if the  conditions to
closing specified in the underwriting  agreement entered into in connection with
such registration are not satisfied other than by reason of some act or omission
by DTN.

         (g) Priority in Requested  Registrations.  If a requested  registration
pursuant to this Section 9.1 involves an underwritten offering, and the managing
underwriter  shall advise the Company in writing  (with a copy to DTN) that,  in
its  opinion,  the total number of  securities  requested to be included in such
registration exceeds the number which can be sold in such offering,  the Company
will  include in any such  registration  to the  extent of the number  which the
Company  is so  advised  can be sold in such  offering  (x)  first,  Registrable
Securities requested to be included in such registration by DTN, (y) second, any
securities  proposed  by the  Company  to be sold for its own  account,  and (z)
third,  Other  Securities  of  the  Company  proposed  to be  included  in  such
registration, in accordance with the priorities, if any, then existing among the
Company and the holders of such other securities.

         (h) Company  Request for Delay.  Except with respect to a  registration
statement  covering a shelf  registration,  the  Company  shall be  entitled  to
postpone for a reasonable period of time (but not exceeding 180 days) the filing

                                       17
                                     -108-
<PAGE>

of any registration  statement otherwise required to be prepared and filed by it
pursuant  to  this  Section  9.1 if  the  Board  of  Directors  of  the  Company
determines,  in its reasonable  judgment,  that such  registration  and offering
would interfere with any financing,  acquisition,  corporate  reorganization  or
other  material  transaction  involving the Company or any of its affiliates and
promptly  gives DTN written notice of such  determination,  containing a general
statement  of  the  reasons  for  such  postponement  and  approximation  of the
anticipated delay. If the Company shall so postpone the filing of a registration
statement,  DTN shall have the right to withdraw the request for registration by
giving  written notice to the Company within 30 days after receipt of the notice
of postponement and, in the event of such withdrawal,  such request shall not be
counted for  purposes  of the  requests  for  registration  to which  holders of
Registrable Securities are entitled pursuant to Section 9.1.

         (i) Shelf Registration  Statement.  The Company shall be deemed to have
complied  with a request for  registration  made by DTN pursuant to this Section
9.1  if,  at the  time  of such  request,  there  shall  be an  effective  shelf
registration  statement on file with the  Commission  pursuant to Rule 415 under
the Securities Act covering the Registrable  Securities which such holders shall
have requested to be registered,  if such registration  statement  complies with
the  provisions  of this  Section  9.1  and of  Section  9.3 and if the  Company
otherwise  fulfills the  requirements  of Section 9.1 and 9.3 in respect of such
registration.

               9.2 Incidental Registration.


         (a)  Right  to  Include  Registrable  Securities.  Notwithstanding  any
limitation  contained  in Section 9.1, if the Company at any time on or prior to
April 30, 2005 proposes to register any of its  securities  under the Securities
Act (other than by a registration on Form S-4 or S-8 or any successor or similar
forms),  whether or not for sale for its own  account,  in a manner  which would
permit  registration of Registrable  Securities for sale to the public under the
Securities  Act, it will each such time give prompt written notice to DTN of its
intention to do so and of DTN's rights under this Section 9.2.  Upon the written
request of DTN made  within 20 days  after  receipt  of any such  notice  (which
request shall specify the Registrable  Securities  intended to be disposed of by
DTN and the intended  method of disposition  thereof),  the Company will use its
best  efforts  to  effect  the  registration  under  the  Securities  Act of all
Registrable  Securities  which the Company has been so  requested to register by
DTN, to the extent  requisite to permit the  disposition (in accordance with the
intended  methods thereof as aforesaid) of the  Registrable  Securities so to be
registered,  by inclusion of such  Registrable  Securities  in the  registration
statement  which covers the securities  which the Company  proposes to register,
provided that (x) the Company  shall not be required to effect the  registration
pursuant to this  Section 9.2 of any  Warrants  (but shall be required to effect
the registration of Registrable  Securities  described in clauses (b) and (c) of
the definition of Registrable  Securities)  and (y) if, at any time after giving
written  notice of its  intention  to register any  securities  and prior to the
effective  date of the  registration  statement  filed in  connection  with such
registration,  the Company shall  determine for any reason not to register or to
delay  registration of such securities,  the Company may, at its election,  give
written notice of such determination to DTN and, thereupon, (i) in the case of a
determination  not to register,  shall be relieved of its obligation to register
any Registrable  Securities in connection with such  registration  (but not from

                                       18
                                     -109-
<PAGE>

its  obligation  to pay the  Registration  Expenses  in  connection  therewith),
without  prejudice,  however,  to  the  rights  of  DTN  to  request  that  such
registration  be effected as a  registration  under Section 9.1, and (ii) in the
case of a  determination  to  delay  registering,  shall be  permitted  to delay
registering  any  Registrable  Securities  for the same  period  as the delay in
registering such other securities.  No registration  effected under this Section
9.2 shall  relieve  the  Company of its  obligation  to effect any  registration
statement upon request under Section 9.1. The Company will pay all  Registration
Expenses  in  connection  with  each  registration  of  Registrable   Securities
requested pursuant to this Section 9.2.

         (b) Priority in Incidental Registrations. If a registration pursuant to
this Section 9.2 involves an underwritten  offering and the managing underwriter
advises the Company in writing  that,  in its opinion,  the number of securities
requested  to be included in such  registration  exceeds the number which can be
sold in such  offering,  the Company  will include in such  registration  to the
extent  of the  number  which  the  Company  is so  advised  can be sold in such
offering securities determined as follows:

                  (x) if such registration as initially  proposed by the Company
         was solely a primary  registration  of its securities,  (i) first,  the
         securities proposed by the Company to be sold for its own account, (ii)
         second,  any  Registrable  Securities  requested to be included in such
         registration,  and (iii)  third,  any other  securities  of the Company
         proposed to be included in such  registration,  in accordance  with the
         priorities,  if any, then existing among the Company and the holders of
         such other securities, and

                  (y) if such registration as initially  proposed by the Company
          was in whole or in part  requested  by  holders of  securities  of the
          Company,  other than DTN, pursuant to demand registration  rights, (i)
          first,  securities  proposed  by the  Company  to be sold  for its own
          account,  (ii) second,  such securities held by the holders initiating
          such  registration,  in accordance with the  priorities,  if any, then
          existing among the Company and the holders of such  securities,  (iii)
          third,  any  Registrable  Securities  requested to be included in such
          registration,  and (iv) fourth,  any other  securities  of the Company
          proposed to be included in such  registration,  in accordance with the
          priorities, if any, then existing among the Company and the holders of
          such other securities.

               9.3  Registration  Procedures.  If and  whenever  the  Company is
required to use its best efforts to effect the  registration  of any Registrable
Securities  under the  Securities  Act as provided in Sections  9.1 and 9.2, the
Company will as expeditiously as possible:

                  (a)  prepare  and  file  with  the  Commission  the  requisite
         registration  statement (including such audited financial statements as
         may be  required  by the  Securities  Act or the rules and  regulations
         promulgated  thereunder) to effect such  registration  and use its best
         efforts  to cause  such  registration  statement  to become  effective,
         provided  that  before  filing  such  registration   statement  or  any
         amendments thereto, the Company will furnish to the counsel selected by
         DTN copies of all such documents  proposed to be filed, which documents
         will be subject to the review of such counsel;

                                       19
                                     -110-
<PAGE>

                  (b) prepare and file with the Commission  such  amendments and
         supplements to such  registration  statement and the prospectus used in
         connection  therewith as may be necessary to maintain the effectiveness
         of such registration statement and to comply with the provisions of the
         Securities  Act  with  respect  to the  disposition  of all  securities
         covered by such  registration  statement until the earlier of such time
         as all of such  securities have been disposed of in accordance with the
         intended  methods of disposition  by the seller or sellers  thereof set
         forth in such  registration  statement  and the  expiration  of 90 days
         after  such  registration  statement  becomes  effective,  except  with
         respect to any such  registration  statement filed pursuant to Rule 415
         (or any successor  Rule) under the  Securities  Act, in which case such
         period shall be one year;

                  (c)  furnish to DTN such  number of  conformed  copies of such
         registration  statement  and of  each  such  amendment  and  supplement
         thereto (in each case including all exhibits), such number of copies of
         the prospectus contained in such registration statement (including each
         preliminary  prospectus  and any  summary  prospectus)  and  any  other
         prospectus filed under Rule 424 under the Securities Act, in conformity
         with the  requirements of the Securities Act, and such other documents,
         as DTN may reasonably request;

                  (d)  use  its  best   efforts  to   register  or  qualify  all
         Registrable   Securities   and  other   securities   covered   by  such
         registration  statement under such other securities or blue sky laws of
         such  jurisdictions  as DTN  shall  reasonably  request,  to keep  such
         registration   or   qualification   in  effect  for  so  long  as  such
         registration  statement  remains in effect,  and take any other  action
         which  may be  reasonably  necessary  or  advisable  to  enable  DTN to
         consummate  the  disposition  in such  jurisdictions  of the securities
         owned by DTN, except that the Company shall not for any such purpose be
         required to qualify  generally to do business as a foreign  corporation
         in any  jurisdiction  wherein it would not but for the  requirements of
         this  subdivision  (d) be obligated to be so qualified or to consent to
         general service of process in any such jurisdiction;

                 (e)  if  such  registration  includes  an  underwritten  Public
         Offering,  furnish to DTN a signed  counterpart,  addressed to DTN (and
         the underwriters), of

                        (x) an  opinion of counsel  for the  Company,  dated the
                 date  of  any  closing   under  the   underwriting   agreement,
                 reasonably satisfactory in form and substance to DTN, and

                        (y) a "comfort" letter, dated the effective date of such
                 registration  statement  and the date of any closing  under the
                 underwriting  agreement,   signed  by  the  independent  public
                 accountants   who  have   certified  the  Company's   financial
                 statements included in such registration statement,

         covering   substantially   the  same   matters  with  respect  to  such
         registration  statement (and the prospectus  included  therein) and, in
         the case of the accountants'  letter, with respect to events subsequent
         to the date of such financial statements, as are customarily covered in

                                       20
                                     -111-
<PAGE>

         opinions of issuer's counsel and in accountants'  letters  delivered to
         the underwriters in underwritten Public Offerings of securities and, in
         the case of the accountants'  letter,  such other financial matters, as
         the underwriters may reasonably request;

                  (f)  immediately  notify  DTN (w) when the  prospectus  or any
         prospectus supplement or post-effective  amendment has been filed, and,
         with  respect  to the  registration  statement  or  any  post-effective
         amendment,  when the same has become  effective,  (x) of any request by
         the  Commission  for  amendments  or  supplements  to the  registration
         statement or the prospectus or for additional  information,  (y) of the
         issuance  by  the   Commission  of  any  stop  order   suspending   the
         effectiveness  of the  registration  statement or the initiation of any
         proceedings  for that  purpose and (z) of the receipt by the Company of
         any notification with respect to the suspension of the qualification of
         the  Registrable  Securities  for  sale  in  any  jurisdiction  or  the
         initiation or threatening of any proceeding for such purpose;

                  (g) use its  reasonable  best efforts to obtain the withdrawal
         of any order suspending the effectiveness of the registration statement
         at the earliest possible time;

                  (h)  immediately  notify  DTN,  at any time when a  prospectus
         relating  thereto is required to be delivered under the Securities Act,
         of the  happening  of any  event as a result  of which  the  prospectus
         included in such registration statement, as then in effect, includes an
         untrue statement of a material fact or omits to state any material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading in the light of the  circumstances  under which
         they were made, and at the request of DTN promptly  prepare and furnish
         to DTN a reasonable number of copies of a supplement to or an amendment
         of such prospectus as may be necessary so that, as thereafter delivered
         to the purchasers of such securities, such prospectus shall not include
         an untrue statement of a material fact or omit to state a material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading in the light of the  circumstances  under which
         they were made; and

                  (i)  otherwise  use  its  best  efforts  to  comply  with  all
         applicable rules and regulations of the Commission,  and make available
         to its security holders, as soon as reasonably practicable, an earnings
         statement  covering the period of at least twelve months,  but not more
         than eighteen  months,  beginning  with the first full  calendar  month
         after the effective date of such registration statement, which earnings
         statement  shall  satisfy  the  provisions  of  Section  11(a)  of  the
         Securities  Act,  and not  file any  amendment  or  supplement  to such
         registration statement or prospectus to which DTN shall have reasonably
         objected on the grounds  that such  amendment  or  supplement  does not
         comply in all material respects with the requirements of the Securities
         Act or of the rules or  regulations  thereunder,  having been furnished
         with a copy  thereof at least three  business  days prior to the filing
         thereof.

                                       21
                                     -112-
<PAGE>

The Company may require DTN to furnish the Company  such  information  regarding
DTN and the distribution of such securities as the Company may from time to time
reasonably request in writing.

               9.4 Underwritten Offerings.

         (a) Requested Underwritten  Offerings. If requested by the underwriters
for any underwritten  offering by holders of Registrable  Securities pursuant to
the  registration  requested  under  Section 9.1, the Company will enter into an
underwriting agreement with such underwriters for such offering,  such agreement
to be  satisfactory  in substance  and form to DTN and the  underwriters  and to
contain such  representations and warranties by the Company and such other terms
as are  customarily  contained in  agreements of this type,  including,  without
limitation, indemnities to the effect and to the extent provided in Section 9.6.
DTN shall be a party to such  underwriting  agreement.  DTN shall be required to
make such  representations  and warranties to and agreements with the Company or
the underwriters as are customarily contained in such agreements.

         (b)  Incidental  Underwritten  Offerings.  If the  Company  at any time
proposes  to  register  any  of  its  securities  under  the  Securities  Act as
contemplated  by Section 9.2 and such  securities  are to be  distributed  by or
through one or more underwriters, the Company will, subject to the provisions of
Section 9.2(b),  if requested by DTN,  request such  underwriters to include the
Registrable  Securities to be offered and sold by DTN among the securities to be
distributed  by such  underwriters.  DTN  shall be a party  to the  underwriting
agreement  between the Company and such  underwriters.  DTN shall be required to
make such  representations and warranties and agreements with the Company or the
underwriters as are customarily contained in such agreements.

         (c) Holdback Agreements. (x) DTN agrees, if so required by the managing
underwriter,  not to effect any public sale or distribution of securities of the
Company  of the  same  class as the  securities  included  in such  registration
statement,  during the seven  days  prior to the date on which any  underwritten
registration pursuant to Section 9.1 or 9.2 has become effective and the 90 days
thereafter,   or  such  longer  period  as  may  be  required  by  the  managing
underwriter.

               (y)  The  Company  agrees  not  to  effect  any  public  sale  or
distribution  of  its  equity  securities  or  securities  convertible  into  or
exchangeable  or exercisable  for any of such  securities  during the seven days
prior to the date on which any underwritten registration pursuant to Section 9.1
or 9.2 has become effective and the 90 days thereafter (or such longer period as
may be  required  by the  underwriter),  except  as part  of  such  underwritten
registration and except pursuant to registrations on Form S-4 or S-8 or any
successor or similar forms thereto.

               9.5 Preparation; Reasonable Investigation. In connection with the
preparation and filing of each registration  statement under the Securities Act,
the  Company  will  give DTN,  the  underwriter,  if any,  and  counsel  for the
underwriter,   the  opportunity  to  participate  in  the  preparation  of  such
registration  statement,  each  prospectus  included  therein  or filed with the

                                       22
                                     -113-
<PAGE>

Commission, and each amendment thereof or supplement thereto, and will give each
of them such access to its books and records and such  opportunities  to discuss
the  business  of the  Company  with its  officers  and the  independent  public
accountants  who have certified its financial  statements as shall be necessary,
in  the  opinion  of  DTN  and  such   underwriter,   to  conduct  a  reasonable
investigation within the meaning of the Securities Act.

               9.6  Indemnification.  (a) The  Company  will,  and hereby  does,
indemnify,  to the extent  permitted by  applicable  law,  DTN, its officers and
directors,  and each  Person,  if any,  who  controls  DTN within the meaning of
Section  15  of  the  Securities  Act,  against  all  losses,  claims,  damages,
liabilities  (or  proceedings  in  respect  thereof)  and  expenses  (under  the
Securities  Act or common law or  otherwise),  joint or  several,  caused by any
untrue statement or alleged untrue statement of a material fact contained in any
registration  statement or  prospectus  (and as amended or  supplemented  if the
Company shall have  furnished  any  amendments  or  supplements  thereto) or any
preliminary  prospectus  or caused by any omission or alleged  omission to state
therein a material fact  required to be stated  therein or necessary to make the
statements  therein  not  misleading,  except  insofar as such  losses,  claims,
damages,  liabilities (or proceedings in respect thereof) or expenses are caused
by any untrue  statement  or alleged  untrue  statement  contained  in or by any
omission  or  alleged  omission  from  information  furnished  in writing to the
Company by DTN  expressly  for use  therein.  If the  offering  pursuant  to any
registration  statement  provided  for  under  this  Agreement  is made  through
underwriters, no action or failure to act on the part of such underwriters shall
affect the  obligations  of the  Company to  indemnify  DTN or any other  Person
pursuant to the preceding sentence. If the offering pursuant to any registration
statement  provided for under this Agreement is made through  underwriters,  the
Company  agrees to enter into an  underwriting  agreement in customary form with
such underwriters and the Company agrees to indemnify such  underwriters,  their
officers  and  directors,  if any, and each  Person,  if any, who controls  such
underwriters  within the meaning of Section 15 of the Securities Act to the same
extent as  hereinbefore  provided  with respect to the  indemnification  of DTN;
provided  that the Company  shall not be required to  indemnify  DTN or any such
underwriter, or any officer or director of DTN or such underwriter or any Person
who  controls  DTN or such  underwriter  within the meaning of Section 15 of the
Securities  Act,  to the extent  that the loss,  claim,  damage,  liability  (or
proceedings in respect thereof) or expense for which  indemnification is claimed
results from DTN's or such  underwriter's  failure to send or give a copy of the
amended or  supplemented  final  prospectus  to the Person  asserting  an untrue
statement  or alleged  untrue  statement  or omission or alleged  omission at or
prior to the written confirmation of the sale of Registrable  Securities to such
Person  if  such  statement  or  omission  was  corrected  in  such  amended  or
supplemented final prospectus prior to such written  confirmation and DTN or the
underwriter,  as the case may be, was given notice of the  availability  of such
amended or supplemented final prospectus.

         (b) DTN will indemnify,  to the extent permitted by applicable law, the
Company,  its officers and directors  and each Person,  if any, who controls the
Company  within the  meaning of Section 15 of the  Securities  Act,  against any
losses,  claims,  damages,  liabilities (or proceedings in respect  thereof) and
expenses  resulting from any untrue  statement or alleged untrue  statement of a
material fact or any omission or alleged omission of a material fact required to
be stated in the registration  statement or prospectus or preliminary prospectus

                                       23
                                     -114-
<PAGE>

or any  amendment  thereof  or  supplement  thereto  or  necessary  to make  the
statements  therein  not  misleading,  but only to the extent  that such  untrue
statement is contained in or such omission is from  information  so furnished in
writing by DTN  expressly  for use  therein,  provided  that  DTN's  obligations
hereunder  shall be limited  to an amount  equal to the  proceeds  to DTN of the
Registrable Securities sold pursuant to such registration statement.

         (c) Any Person entitled to indemnification under the provisions of this
Section 9.6 shall (x) give prompt notice to the indemnifying  party of any claim
with  respect  to  which  it  seeks  indemnification  (but  the  failure  of any
indemnified  party to give  notice as  provided  herein  shall not  relieve  the
indemnifying  party of its obligations under the preceding  subdivisions of this
Section  9.6,  except to the  extent  that the  indemnifying  party is  actually
prejudiced by such  failure) and (y) unless a conflict of interest  between such
indemnified  and  indemnifying  parties exists in respect of such claim,  permit
such  indemnifying  party to assume the  defense  of such  claim,  with  counsel
reasonably  satisfactory  to the  indemnified  party;  and if such defense is so
assumed, such indemnifying party shall not enter into any settlement without the
consent of the indemnified party if such settlement  attributes liability to the
indemnified  party  and such  indemnifying  party  shall not be  subject  to any
liability  for any  settlement  made  without  its consent  (which  shall not be
unreasonably withheld); and any underwriting agreement entered into with respect
to any  registration  statement  provided  for  under  this  Agreement  shall so
provide.  In the event an  indemnifying  party shall not be entitled,  or elects
not,  to assume the  defense of a claim,  such  indemnifying  party shall not be
obligated  to pay the fees and  expenses  of more  than one  counsel  or firm of
counsel for all parties  indemnified  by such  indemnifying  party in respect of
such claim,  unless a conflict of interest exists between such indemnified party
and any  other of such  indemnified  parties  in  respect  to such  claim.  Such
indemnity shall remain in full force and effect  regardless of any investigation
made by or on behalf of an  indemnified  party,  its officers,  directors or any
Person,  if any, who controls  such party as  aforesaid,  and shall  survive the
transfer of such securities by such holder.

         (d) If the  indemnification  provided for in this Section 9.6 shall for
any reason be held by a court to be unavailable  to an  indemnified  party under
Section 9.6(a) or (b) hereof in respect of any loss, claim, damage or liability,
or any action in respect  thereof,  then,  in lieu of the amount paid or payable
under Section 9.6(a) or (b), the indemnified  party and the  indemnifying  party
under Section 9.6(a) or (b) shall  contribute to the aggregate  losses,  claims,
damages and liabilities  (including legal or other expenses  reasonably incurred
in  connection  with  investigating  the  same),  (x) in such  proportion  as is
appropriate  to  reflect  the  relative  fault  of  the  Company,  DTN  and  the
underwriters,  if any, which resulted in such loss, claim,  damage or liability,
or action or proceeding in respect  thereof,  with respect to the  statements or
omissions which resulted in such loss, claim, damage or liability,  or action or
proceeding  in  respect  thereof,  as  well  as  any  other  relevant  equitable
considerations  or (y) if the  allocation  provided  by clause  (x) above is not
permitted by  applicable  law, in such  proportion  as shall be  appropriate  to
reflect the relative benefits received by the Company, DTN and the underwriters,
if any,  from  the  offering  of the  securities  covered  by such  registration
statement,  provided,  that for  purposes  of clauses (x) or (y),  the  relative
benefits  received  by DTN shall be deemed not to exceed the amount of  proceeds
received by DTN and DTN shall not be required to contribute any amount in excess

                                       24
                                     -115-
<PAGE>

of the amount it could have been required to pay to an indemnified  party if the
indemnity  under  subsection  (a) of this Section 9.6 was  available.  No Person
guilty of fraudulent  misrepresentation  (within the meaning of Section 11(f) of
the Securities  Act) shall be entitled to  contribution  from any Person who was
not guilty of such fraudulent misrepresentation. In addition, no Person shall be
obligated to contribute  hereunder any amounts in payment for any  settlement of
any action or claim effected without such Person's consent,  which consent shall
not be unreasonably withheld.

               9.7  Registration  Rights to Others.  If the Company shall at any
time after the date of this Warrant  provide to any holder of any  securities of
the Company rights with respect to the registration of such securities under the
Securities  Act,  such rights  shall not be in  conflict  with any of the rights
provided in this Section 9 to the holders of Registrable  Securities;  provided,
however, the foregoing shall not preclude the Company from granting registration
rights which are more favorable than those  contained in this Warrant so long as
such rights do not preclude the Company  from  complying  with the terms of this
Warrant.

               9.8 Rule 144.  If and when the  Common  Stock is  either  listed,
designated or authorized as provided in Section  9.3(j),  the Company shall take
all  actions  reasonably  necessary  to enable DTN to sell such shares of Common
Stock  issuable upon  exercise of this Warrant  without  registration  under the
Securities  Act within the  limitation  of the  provisions of Rule 144 under the
Securities  Act, as such Rule may be amended  from time to time,  or any similar
rules or regulations  hereafter  adopted by the Commission,  including,  without
limitation,  filing on a timely basis all reports  required to be filed pursuant
to the Exchange Act. Notwithstanding the provisions of Sections 9.1 and 9.2, the
Company  has no  obligation  to  effect  the  registration  of  any  Registrable
Securities  as provided in such sections if DTN can then sell under Rule 144 all
the  Registrable  Securities  which  otherwise would be registered in accordance
with such sections, as applicable; provided such exception does not preclude DTN
from exercising its registration rights on a future occasion.

         10.  Availability of Information.  The Company will cooperate with each
holder of any  Restricted  Securities in supplying  such  information  as may be
necessary for such holder to complete and file any  information  reporting forms
presently  or  hereafter  required  by  the  Commission  as a  condition  to the
availability  of an  exemption  from  the  Securities  Act for  the  sale of any
Restricted  Securities.  The Company will furnish to the holder of this Warrant,
promptly upon their  becoming  available,  copies of all  financial  statements,
reports,  notices and proxy  statements sent or made available  generally by the
Company to its stockholders,  and copies of all regular and periodic reports and
all  registration  statements  and  prospectuses  filed by the Company  with any
securities exchange or with the Commission.

         11.  Reservation  of Stock,  Etc. The Company will at all times reserve
and keep  available,  solely for  issuance and  delivery  upon  exercise of this
Warrant, the number of shares of Common Stock (or Other Securities) from time to
time issuable upon exercise of this Warrant at the time outstanding.  All shares
of Common Stock (or Other  Securities) shall be duly authorized and, when issued
upon such exercise,  shall be validly  issued and, in the case of shares,  fully
paid and nonassessable, with no liability on the part of the holders thereof.

                                       25
                                     -116-
<PAGE>

         12.  Listing on  Securities  Exchange.  The Company  will, at all times
after any Common  Stock is so listed,  designated  or  authorized  as  indicated
below, (a) list on each national  securities  exchange on which any Common Stock
may at any time be listed,  subject to official notice of issuance upon exercise
of this  Warrant,  and will maintain such listing of, all shares of Common Stock
from time to time  issuable  upon  exercise  of this  Warrant  or (b) secure and
maintain  designation  of all shares of Common Stock from time to time  issuable
upon  exercise of this Warrant as a NASDAQ  "national  market  system  security"
within the meaning of Rule llAa2-1 of the Commission  or,  failing that,  secure
NASDAQ authorization for such shares of Common Stock.

         13. Ownership, Transfer and Substitution of Warrants.


               13.1. Ownership of Warrants.  The Company may treat the person in
whose name this  Warrant is  registered  on the register  kept at the  principal
office  of the  Company  as the  owner  and  holder  thereof  for all  purposes,
notwithstanding any notice to the contrary, except that, if and when any Warrant
is properly  assigned in blank,  the Company may (but shall not be obligated to)
treat  the  bearer  thereof  as the  owner  of such  Warrant  for all  purposes,
notwithstanding any notice to the contrary.  Subject to Section 8, a Warrant, if
properly  assigned,  may be exercised by a new holder without first having a new
Warrant issued.

               13.2.  Transfer and Exchange of Warrants.  Upon the  surrender of
any Warrant,  properly endorsed, for registration of transfer or for exchange at
the principal office of the Company, the Company at its expense will (subject to
compliance  with  Section 8, if  applicable)  execute and deliver to or upon the
order of the  holder  thereof  a new  Warrant  or  Warrants  of like  tenor,  in
denominations  of at least 1,000  shares,  in the name of such holder or as such
holder  (upon  payment  by such  holder of any  applicable  transfer  taxes) may
direct,  calling in the aggregate on the face or faces thereof for the number of
shares  of  Common  Stock  called  for on the face or faces  of the  Warrant  or
Warrants so surrendered.

               13.3.   Replacement   of  Warrants.   Upon  receipt  of  evidence
reasonably  satisfactory  to the  Company  of the loss,  theft,  destruction  or
mutilation  of any  Warrant  and,  in  the  case  of any  such  loss,  theft  or
destruction  of any Warrant  held by a Person  other than the  Purchaser  or any
institutional  investor,  upon delivery of indemnity reasonably  satisfactory to
the  Company  in form and amount  or, in the case of any such  mutilation,  upon
surrender  of such  Warrant  for  cancellation  at the  principal  office of the
Company, the Company at its expense will execute and deliver, in lieu thereof, a
new Warrant of like tenor.

         14. Definitions. As used herein, unless the context otherwise requires,
the following terms have the following respective meanings:

               Acquiring  Person:  the  continuing or surviving  corporation  or
other  entity of a  consolidation  or merger with the Company (if other than the
Company),  the transferee of  substantially  all of the properties and assets of
the Company,  the corporation or other entity consolidating with or merging into
the Company in a  consolidation  or merger in  connection  with which the Common
Stock is changed into or exchanged  for stock or other  securities  of any other

                                       26
                                     -117-
<PAGE>

Person  or  cash  or  any  other  property,   or,  in  the  case  of  a  capital
reorganization or reclassification, the Company.

               Acquisition  Price: as applied to the Common Stock,  with respect
to any transaction to which Section 3 applies,  (a) the price per share equal to
the greater of the following, determined in each case as of the date immediately
preceding the date of consummation of such transaction:  (x) the Market Price of
the Common  Stock and (y) the highest  amount of cash plus the Fair Value of the
highest  amount of securities or other property which the holder of this Warrant
would have been entitled as a shareholder to receive upon such  consummation  if
such holder had exercised this Warrant  immediately  prior thereto,  or (b) if a
purchase, tender or an exchange offer is made by the Acquiring Person (or by any
of its affiliates) to the holders of the Common Stock and such offer is accepted
by the holders of more than 50% of the outstanding  shares of Common Stock,  the
greater of (i) the price determined in accordance with the foregoing subdivision
(a),  and (ii) the  price  per  share  equal to the  greater  of the  following,
determined in each case as of the date  immediately  preceding the acceptance of
such offer by the holders of more than 50% of the  outstanding  shares of Common
Stock:  (A) the Market Price of the Common  Stock and (B) the highest  amount of
cash plus the Fair Value of the highest  amount of securities or other  property
which the holder of this Warrant would be entitled as a  shareholder  to receive
pursuant to such offer if such holder had  exercised  this  Warrant  immediately
prior to the expiration of such offer and accepted the same.

               Additional Shares of Common Stock: all shares (including treasury
shares) of Common  Stock  issued or sold (or,  pursuant  to Section  2.3 or 2.4,
deemed to be issued)  by the  Company  after the  Initial  Date,  whether or not
subsequently  reacquired  or  retired by the  Company,  other than (a) shares of
Common  Stock  issued upon the  exercise of any  Warrants  and (b) not more than
700,000 shares of Common Stock issued upon the exercise of stock options granted
to  directors,  officers  and other  employees  of the  Company  pursuant to the
existing  stock option plans,  as amended,  and (c)  3,646,000  shares of Common
Stock issuable upon the exercise of existing  warrants and existing  options not
issued pursuant to the stock option plans referred to in clause (b) above.

               Base Price: on any date specified  herein,  the lesser of (a) the
Current Market Price or (b) the Warrant Price.

               Business  Day: any day other than a Saturday or a Sunday or a day
on which commercial banking  institutions in the City of New York are authorized
by law to be closed,  provided  that,  in  determining  the period  within which
certificates or Warrants are to be issued and delivered  pursuant to Section 1.3
at a time when  shares of Common  Stock  (or  Other  Securities)  are  listed or
admitted   to  trading  on  any   national   securities   exchange   or  in  the
over-the-counter  market and in  determining  the Market Price of any securities
listed or  admitted  to trading on any  national  securities  exchange or in the
over-the-counter  market,  "Business  Day" shall mean any day when the principal
exchange in which  securities are then listed or admitted to trading is open for
trading or, if such securities are traded in the over-the-counter  market in the
United States, such system is open for trading, and provided,  further, that any
reference to "days"  (unless  Business Days are  specified)  shall mean calendar
days.

                                       27
                                     -118-
<PAGE>

               Commission:  the Securities and Exchange  Commission or any other
Federal agency at the time administering the Securities Act or the Exchange Act,
whichever is the relevant statute for the particular purpose.

               Common  Stock:  the Company's  common  stock,  par value $.01 per
share, as constituted on the date hereof, any stock into which such common stock
shall have been changed or any stock resulting from any reclassification of such
common stock, and all other stock of any class or classes  (however  designated)
of the  Company the holders of which have the right,  without  limitation  as to
amount,  either to all or to a share of the  balance  of current  dividends  and
liquidating  dividends after the payment of dividends and  distributions  on any
shares entitled to preference.

               Company: SmartServ Online, Inc., a Delaware corporation.


               Convertible Securities: any evidences of indebtedness,  shares of
stock  (other  than Common  Stock) or other  securities  directly or  indirectly
convertible into or exchangeable for Additional Shares of Common Stock.

               Current  Market Price:  on any date  specified  herein,  (a) with
respect  to  Common  Stock or to  Voting  Common  Stock  (or  equivalent  equity
interests)  of an Acquiring  Person or its Parent,  (x) the average daily Market
Price during the period of the most recent 20  consecutive  Business Days ending
on such date,  or (y) if shares of Common Stock or such Voting  Common Stock (or
equivalent  equity  interests),  as the case  may be,  are not  then  listed  or
admitted to trading on any national  securities  exchange and if the closing bid
and  asked   prices   thereof   are  not  then  quoted  or   published   in  the
over-the-counter  market, the Market Price on such date; and (b) with respect to
any other securities, the Market Price on such date.

               DTN: Data  Transmission  Network  Corporation or any successor to
its business.

               DTN Agreement: the meaning specified in the opening paragraphs of
this Warrant.


               Exchange Act: the Securities Exchange Act of 1934, or any similar
Federal statute, and the rules and regulations of the Commission thereunder, all
as the same shall be in effect at the time of determination.

               Fair Value: with respect to any securities or other property, the
fair value  thereof as of a date which is within 15 days of the date as of which
the  determination  is to be made (a)  determined  by an  agreement  between the
Company and DTN or (b) if the Company and DTN fail to agree,  determined jointly
by an  independent  investment  banking  firm  retained by the Company and by an
independent  investment  banking firm retained by DTN, either of which firms may
be an independent  investment  banking firm regularly retained by the Company or
DTN or (c) if  the  Company  or DTN  shall  fail  so to  retain  an  independent

                                       28
                                     -119-
<PAGE>

investment  banking firm within five Business Days of the retention of such firm
by DTN or the  Company,  as the case may be,  determined  solely  by the firm so
retained  or (d) if the firms so  retained  by the  Company  and by DTN shall be
unable to reach a joint  determination  within 15 Business Days of the retention
of the last firm so  retained,  determined  by  another  independent  investment
banking  firm which is not a regular  investment  banking firm of the Company or
DTN chosen by the first two such  firms.  Each of the  Company  and DTN shall be
responsible for the fees and expenses of the investment banking firm retained by
them  under the  foregoing  clause  (b) and  shall  share  equally  the fees and
expenses of any investment banking firm retained under the foregoing clause (d).

               Initial Date: the meaning specified in Section 2.2.

               Market Price: on any date specified  herein,  (a) with respect to
Common Stock or to Voting Common Stock (or  equivalent  equity  interests) of an
Acquiring Person or its Parent,  the amount per share equal to (x) the last sale
price of shares of such security,  regular way, on such date or, if no such sale
takes  place on such date,  the  average  of the  closing  bid and asked  prices
thereof on such  date,  in each case as  officially  reported  on the  principal
national  securities  exchange  on which the same are then listed or admitted to
trading,  or (y) if no shares of such  security  are then  listed or admitted to
trading on any national securities exchange but such security is designated as a
national  market  system  security by the NASD,  the last trading  price of such
security on such date, or if such security is not so designated,  the average of
the reported  closing bid and asked prices  thereof on such date as shown by the
NASDAQ  system  or, if no shares  thereof  are then  quoted in such  system,  as
published  by the  National  Quotation  Bureau,  Incorporated  or any  successor
organization,  and in either case as reported by any member firm of the New York
Stock Exchange selected by the Company, or (z) if no shares of such security are
then listed or admitted to trading on any national  exchange or  designated as a
national  market system  security and if no closing bid and asked prices thereof
are then so quoted or published in the  over-the-counter  market,  the higher of
(i) the book value thereof as  determined  by agreement  between the Company and
the  Requisite  Holders,  or if the Company and the  Requisite  Holders  fail to
agree,  by any firm of independent  public  accountants  of recognized  standing
selected by the Board of  Directors  of the  Company,  as of the last day of any
month ending within 60 days preceding the date as of which the  determination is
to be made and (ii) the fair value thereof determined in good faith by the Board
of Directors of the Company  thereof as of a date which is within 15 days of the
date as of which the  determination  is to be made;  and (b) with respect to any
other securities,  the fair value thereof  determined in good faith by the Board
of  Directors of the Company as of a date which is within 15 days of the date as
of which the determination is to be made.

               NASD: the National Association of Securities Dealers.

               NASDAO: the Automated Quotation System of the NASD.

               Options:  rights,  options or warrants to subscribe for, purchase
or otherwise  acquire  either  Additional  Shares of Common Stock or Convertible
Securities.

               Other  Securities:  any stock (other than Common Stock) and other
securities of the Company or any other Person (corporate or otherwise) which DTN

                                       29
                                     -120-
<PAGE>

at any time shall be  entitled  to  receive,  or shall have  received,  upon the
exercise of the Warrants, in lieu of or in addition to Common Stock, or which at
any time shall be  issuable  or shall  have been  issued in  exchange  for or in
replacement  of Common  Stock or Other  Securities  pursuant to this  Warrant or
otherwise.

               Parent:  as to any Acquiring  Person,  any  corporation  or other
Person which (a) controls the Acquiring  Person  directly or indirectly  through
one or more  intermediaries,  (b) is required to include the Acquiring Person in
its  consolidated  financial  statements  under  generally  accepted  accounting
principles  and  (c) is  not  itself  included  in  the  consolidated  financial
statements of any other Person (other than its consolidated subsidiaries).

               Person:  an  individual,  a  partnership,   a  limited  liability
company, an association, a joint venture, a corporation, a business, a trust, an
unincorporated  organization  or a  government  or  any  department,  agency  or
subdivision thereof.

               Public  Offering:  any  offering  of Common  Stock to the  public
pursuant to an effective registration statement under the Securities Act.

               Registrable  Securities:  (a) this  Warrant,  (b) any  shares  of
Common  Stock or Other  Securities  issued or  issuable  upon  exercise  of this
Warrant and (c) any  securities  issued or issuable  with  respect to any Common
Stock  or  Other  Securities  referred  to in  subdivision  (b) by way of  stock
dividend  or  stock  split  or in  connection  with  a  combination  of  shares,
recapitalization, merger, consolidation or other reorganization or otherwise. As
to any particular  Registrable  Securities,  once issued such  securities  shall
cease to be  Registrable  Securities  when  (x) a  registration  statement  with
respect to the sale of such  securities  shall have become  effective  under the
Securities  Act and such  securities  shall have been  disposed of in accordance
with such  registration  statement,  (y) they shall have been sold as  permitted
under Rule 144 (or any successor  provision)  under the  Securities  Act, or (z)
they shall have ceased to be outstanding.

               Registration  Expenses:  all expenses  incident to the  Company's
performance of or compliance with Section 9, including,  without limitation, all
registration,  filing and NASD fees,  all fees and  expenses of  complying  with
securities  or blue sky laws,  all word  processing,  duplicating  and  printing
expenses, messenger and delivery expenses, the fees and disbursements of counsel
for  the  Company  and of its  independent  public  accountants,  including  the
expenses  of any  special  audits  or "cold  comfort"  letters  required  by the
underwriters  with  respect to such  registration,  premiums  and other costs of
policies of insurance against  liabilities arising out of the public offering of
the Registrable  Securities being  registered and any fees and  disbursements of
underwriters   customarily   paid  by  issuers  of  securities,   but  excluding
underwriting  discounts and commissions and transfer taxes, if any, and the fees
and disbursements of DTN's counsel and accountants.

               Restricted  Securities:  (a) any Warrants  bearing the applicable
legend  set forth in  Section  8.1,  (b) any  shares  of Common  Stock (or Other
Securities)  which have been issued upon the  exercise of Warrants and which are
evidenced by a certificate or  certificates  bearing the  applicable  legend set
forth in such Section 8.1, and (c) unless the context  otherwise  requires,  any
shares of Common Stock (or Other Securities) which are at the time issuable upon
the  exercise of Warrants  and which,  when so issued,  will be  evidenced  by a

                                       30
                                     -121-
<PAGE>

certificate or certificates  bearing the applicable  legend set forth in Section
8.1.

               Securities  Act:  the  Securities  Act of  1933,  or any  similar
Federal statute, and the rules and regulations of the Commission thereunder, all
as the same shall be in effect at the time of determination.

               Subsidiary: any corporation, association or other business entity
a majority  (by number of votes) of the Voting  Common  Stock of which is at the
time owned by the Company or by one or more  Subsidiaries  or by the Company and
one or more Subsidiaries.

               Transfer:  unless  the  context  otherwise  requires,  any  sale,
assignment,  pledge or other  disposition  of any  security,  or of any interest
therein, which could constitute a "sale" as that term is defined in Section 2(3)
of the Securities Act.

               Voting Common Stock: with respect to any corporation, association
or other business entity, stock of any class or classes (or equivalent interest)
, if the holders of the stock of such class or classes (or equivalent interests)
are  ordinarily,  in the  absence  of  contingencies,  entitled  to vote for the
election  of  a  majority  of  the  directors  (or  persons  performing  similar
functions) of such  corporation,  association  or business  entity,  even if the
right so to vote has been suspended by the happening of such a contingency.

               Warrant Price: the meaning specified in Section 2.1.

               Warrants:  this Common Stock Purchase  Warrant and any warrant or
warrants into which it has been changed including,  without limitation,  any new
or replacement warrants referred to in Sections 13.2 and 13.3.

         15.  Remedies.  The Company  stipulates that the remedies at law of the
holder of this Warrant in the event of any default or threatened  default by the
Company  in the  performance  of or  compliance  with  any of the  terms of this
Warrant  are not and  will not be  adequate  and  that,  to the  fullest  extent
permitted by law,  such terms may be  specifically  enforced by a decree for the
specific  performance  of any  agreement  contained  herein or by an  injunction
against a violation of any of the terms hereof or otherwise.

         16. No Rights or Liabilities as Stockholder.  Nothing contained in this
Warrant  shall be construed as  conferring  upon the holder hereof any voting or
other rights as a stockholder  of the Company or as imposing any  liabilities on
such holder to purchase  any  securities  or as a  stockholder  of the  Company,
whether  such  liabilities  are  asserted  by the  Company  or by  creditors  or
stockholders of the Company or otherwise.

         17. Notices.  All notices and other  communications  under this Warrant
shall be in writing and shall be mailed by registered or certified mail,  return
receipt requested,  addressed (a) if to the holder of this Warrant or any holder
of any Common Stock (or Other  Securities),  at the  registered  address of such
holder as set forth in the register kept at the principal office of the Company,

                                       31
                                     -122-
<PAGE>

or (b) if to the Company, to the attention of its Chief Financial Officer at its
principal office, provided that the exercise of any Warrant shall be effected in
the manner provided in Section 1.

         18.  Expiration.  The right to exercise  this Warrant shall expire at 3
P.M., New York City time, on November 17, 2000. The registration rights provided
in Section 9 shall  expire at 3 P.M.,  New York City time,  April 30,  2005 with
respect to any shares of Common  Stock issued  previously  to such time upon the
exercise hereof.

         19.  Miscellaneous.  This  Warrant  and any term hereof may be changed,
waived,  discharged or terminated only by an instrument in writing signed by the
party against which enforcement of such change, waiver, discharge or termination
is sought.  The  agreements of the Company  contained in this Warrant other than
those  applicable  solely to the Warrants and the holders thereof shall inure to
the  benefit of and be  enforceable  by any holder or holders at the time of any
Common Stock (or Other Securities) issued upon the exercise of Warrants, whether
so expressed or not.  This Warrant shall be construed and enforced in accordance
with and governed by the laws of the State of Delaware.  The section headings in
this Warrant are for  purposes of  convenience  only and shall not  constitute a
part hereof.

                                             SMARTSERV ONLINE, INC.


                                             By: /s/ Mario Rossi
                                                 ----------------------------
                                                 Mario Rossi
                                             Its:VP of Operations

                                       32
                                     -123-


                                FUNDING AGREEMENT

         This Funding  Agreement  ("Agreement") is made as of November 9 , 1999,
between Data Transmission Network  Corporation,  a Delaware corporation ("DTN"),
and Ag1.Com, Inc., a Wyoming corporation ("Ag1").

                                   WITNESSETH:

         WHEREAS,  Ag1 and DTN entered into a nonbinding  letter of intent dated
September  27,  1999  (the  "Acquisition  Proposal"),   which  contemplates  the
acquisition (the "Acquisition") by DTN of a controlling equity interest in Ag1.

         WHEREAS,  the Acquisition  Proposal also contemplates a working capital
agreement  pursuant to which DTN would provide working capital funds to Ag1 upon
terms mutually agreeable to DTN and Ag1.

         WHEREAS,  the  parties  desire  to enter  into this  Agreement  for the
purpose  of  agreeing  upon the terms and  conditions  of funding by DTN for Ag1
during the period in which Ag1 and DTN  negotiate,  document and  consummate the
Acquisition.

         NOW, THEREFORE,  in consideration of the mutual promises and agreements
herein contained, it is agreed as follows:

         1. The Advances.  Commencing on November 1, 1999, and continuing  until
the earlier of May 31, 2000 or the closing of the Acquisition (the "Term"),  DTN
will make advances to Ag1, subject to the terms and conditions contained in this
Agreement.  Upon receipt of an application for an advance complying with Section
4, DTN will make advances  (collectively  called the "Operational  Advances" and
individually called an "Operational  Advance) to Ag1 which in the aggregate will
not exceed Five Hundred Twenty Five Thousand Dollars ($525,000). Upon receipt of
an application  for an advance  complying with Section 4, DTN will make advances
(collectively  called the  "Construction  Advances"  and  individually  called a
"Construction  Advance") for capital expenditures relating to the tenant finish,
trade fixtures and equipment to be included in Ag1's leased office facility (the
"Project") which are in accordance with the Plans approved by DTN as provided in
Section 4(a). The Construction Advances in no event shall exceed One Million Six
Hundred Thousand Dollars ($1,600,000) in the aggregate. The Operational Advances
and  Construction  Advances  sometimes  will be  referred  to in this  Agreement
collectively as the "Advances" and individually as an "Advance". All Operational
Advances  shall  be  utilized  solely  to  satisfy  the  working  capital  needs
(exclusive  of capital  expenditures)  of Ag1 in  operating  its business in the
ordinary course consistent with past practices.  All Construction Advances shall
be utilized solely for payment of the costs of constructing the improvements and
equipping the Project in substantial  compliance  with the Plans for the Project
approved by DTN as provided in Section 4(a).  Ag1 shall in no event divert funds
for any other purpose. The Advances do not constitute revolving credit, and once
an Advance has been repaid,  DTN is not obligated to make the Advance again. All
Advances  shall be subject at all times to all maximum limits and conditions set
forth in this  Agreement.  The Advances  shall be evidenced by Ag1's  promissory

                                     -124-
<PAGE>

note (the "Note") in the form set forth as Exhibit "A" hereto,  with appropriate
insertions.  All Advances made by DTN to Ag1 pursuant to this  Agreement and all
payments of principal shall be evidenced by DTN on the schedule  attached to the
Note,  which  schedule shall be rebuttable  presumptive  evidence of the subject
matter thereof.

         2. Interest Charges.  The unpaid principal amount of the Advances shall
bear  interest  from time to time  prior to  maturity  at a rate per annum  (the
"Interest  Rate)  which is one-half a  percentage  point  (.005)  above the rate
announced  from time to time in the "Money  Rates"  section  of The Wall  Street
Journal as the  "prime  rate"  (the base rate on  corporate  loans at large U.S.
money center commercial  banks). The initial Interest Rate shall be the Interest
Rate  most  recently  announced  prior to the date of this  Agreement,  and such
Interest  Rate  shall be  adjusted  upward  or  downward  on each date such rate
changes.  The unpaid  principal  amounts of the Advances which are not paid when
due shall bear  interest  accruing from and including the date such amount shall
have  become  due to the date of  payment  thereof in full at the rate per annum
which is four percentage points above the Interest Rate in effect on such date.

         3.  Payments of Principal  and  Interest.  If the Term expires upon the
closing of the  Acquisition,  then Ag1 and DTN agree that the  principal  of and
interest on the  Advances  shall be applied to the working  capital  funds to be
provided by DTN to Ag1  pursuant to the  documentation  for the  Acquisition  as
contemplated  by the  Acquisition  Proposal.  If the Term  expires  without  the
closing  of the  Acquisition,  then Ag1 agrees (i) to pay to DTN within ten (10)
days of the expiration of the Term all unpaid  interest on the Advances  accrued
through May 31, 2000, (ii) to repay the entire  principal amount of the Advances
to DTN in twenty-four (24) equal monthly  payments  commencing on June 30, 2000,
and continuing on the last day of each calendar month  thereafter,  and (iii) to
pay to DTN the interest on the unpaid  Advances  accruing after May 31, 2000, at
the  Interest  Rate in effect  from time to time as  provided  in  Section 2, in
monthly  payments in arrears  commencing on June 30, 2000, and continuing on the
last day of each  calendar  month  thereafter  until paid in full.  All payments
hereunder  shall  first be  applied  to  accrued  and  unpaid  interest  and the
remainder  shall be  applied to the unpaid  principal  balance of the  Advances.
Interest  after  maturity  shall be payable on  demand.  Interest  on the unpaid
principal  amount  of the  Advances  shall be  computed  on the  basis of a year
consisting of 360 days and paid for actual days elapsed.

         4.  Disbursement of Advances.  DTN's  obligation to make Advances under
this  Agreement  shall be subject to there being at the time of such  Advance no
condition  which is or with the  passage  of time  would be an event of  default
under this Agreement.  DTN's obligation to make Construction Advances under this
Agreement also shall be subject to the fulfillment to DTN's  satisfaction of all
of the following conditions:

         (a)   DTN shall have  approved  in writing a complete  set of plans and
               construction  and  purchase   contracts  (the  "Plans")  for  all
               improvements  and equipment for the Project and the  construction
               thereof,  and Ag1 shall have furnished to DTN upon request copies
               of all permits and requisite  approvals of any governmental  body
               necessary for the construction and use of the Project.

                                       2
                                     -125-
<PAGE>

         (b)   All work for which a  Construction  Advance is  requested  (other
               than the application  for a Construction  Advance for the initial
               deposit  to be given the  general  contractor  of the  Project or
               other deposits  required under the Plans) shall have been done in
               a good and  workmanlike  manner and all  materials,  fixtures and
               equipment  related to such  Construction  Advance shall have been
               furnished and installed,  all in compliance  with the Plans.  Ag1
               shall also have  furnished  to DTN such proofs as DTN may require
               to establish the progress of the work, compliance with applicable
               laws,  freedom  from  liens,  and the basis for the  Construction
               Advance.

         (c)   Ag1 shall have  obtained and attached to each  application  for a
               Construction Advance, executed acknowledgments of payments of all
               sums due and  releases  of  mechanic's  and  materalmen's  liens,
               satisfactory  to DTN,  from any party having lien  rights,  which
               acknowledgments  of payment and releases of liens shall cover all
               work, labor, equipment,  materials done, supplied,  performed, or
               furnished prior to such application for the Construction Advance.

Each application for an Advance shall be on a form approved by DTN,  executed by
Ag1,  and  supported  by such  evidence as DTN shall  reasonably  require.  Each
application for an Advance shall be deemed a certification of Ag1 that as of the
date of such application,  all representations and warranties  contained in this
Agreement are true and correct,  and that Ag1 is in  compliance  with all of the
provisions of this Agreement.  With respect to Construction Advances, other than
the application  for a Construction  Advance for the initial deposit to be given
the general  contractor  of the  Project or other  deposits  required  under the
Plans, Ag1 shall apply only for disbursement  with respect to work actually done
and for materials and equipment actually  incorporated into the Project.  At the
sole option of DTN,  Construction Advances may be paid in the joint names of Ag1
and the general  contractor,  subcontractor(s) or supplier(s) in payment of sums
due in connection with the Project.

         5.  Security.  All Advances  shall be secured by a first lien  security
interest  on all of the  collateral  granted to DTN by Ag1 under  that  Security
Agreement executed  concurrently  herewith (the "Security Agreement") and by the
Assignment  of Lease to be executed by Ag1 and its landlord  within  thirty days
after the date of this  Agreement in a form approved by DTN (the  "Assignment of
Lease").  Ag1 shall  comply with all the terms and  conditions  of the  Security
Agreement,  the Assignment of Lease, and any other instruments and documents now
or hereafter delivered in connection herewith or therewith.

         6. Default.  Each of the following shall constitute an event of default
under this Agreement:


         (a)   if any representation or warranty made by Ag1 proves to be untrue
               in any material respect;

                                       3
                                     -126-
<PAGE>

         (b)   Ag1's default in the due  observance or performance of any of the
               terms,  conditions  or  agreements  herein  or under  the  terms,
               conditions  or  agreements   contained  in  the  Note,   Security
               Agreement or Assignment of Lease;

         (c)   the  financial  condition of Ag1 or the security for the Advances
               is materially affected in any adverse manner;

         (d)   the filing by or against  Ag1 of any  petition in  bankruptcy  or
               insolvency  or  for  reorganization,  or  for  appointment  of  a
               receiver,  liquidator, or trustee, or the making of an assignment
               for the benefit of  creditors  or the filing of a petition for an
               arrangement;

         (e)   a change  deemed by DTN to be material or  substantial  occurs in
               the assets or net worth or credit standing of Ag1;

         (f)   any judgment is rendered against Ag1 which in the sole discretion
               of  DTN  constitutes  a  material   impairment  of  Ag1's  credit
               standing; or

         (g)   a  default  by Ag1  occurs  under  the  Security  Agreement,  the
               Assignment of Lease or any other instrument securing the Note and
               Ag1 has not cured such default within the applicable  cure period
               set forth in the Security  Agreement,  the Assignment of Lease or
               such other instrument, if any.

          7. Remedies on Default.  If any event of default occurs,  DTN may, but
shall not be required to,  disburse or cause to be disbursed  part or all of the
Advances to observe or perform all or portions of Ag1's obligations hereunder or
under the Security Agreement or the Assignment of Lease. If any event of default
occurs,  DTN, at its option, may declare all outstanding  indebtedness under the
Note, together with all accrued but unpaid interest thereon, immediately due and
payable without  presentation,  demand,  protest, or further notice of any kind,
and DTN may then proceed to enforce each and every remedy provided for herein or
in the Security  Agreement or the Assignment of Lease either at law or in equity
for the collection of the indebtedness. All rights and remedies herein expressed
are  cumulative  and not exclusive of any right or remedy DTN may have either at
law or in equity and are in addition to those  rights set forth in the  Security
Agreement and the Assignment of Lease.

         8. Ag1's  Representations,  Warranties and Covenants.  To induce DTN to
make the Advances  provided for herein,  Ag1  represents and warrants (as of the
date of this Agreement and as of the date of each Advance), covenants and agrees
:

         (a)   That Ag1 has all requisite power and authority to enter into this
               Agreement  and all  documents  relative  hereto  to which it is a
               party and to  perform  its  duties  hereunder,  and has taken all
               actions  necessary and proper in order to exercise such power and
               authority;  that this  Agreement  and the Funding  Documents  (as
               hereinafter  defined)  have been duly  authorized,  executed  and
               delivered and constitute valid and legally binding obligations of
               Ag1 and are enforceable according to their terms; that Ag1 is not

                                       4
                                     -127-
<PAGE>

               in breach of or in default of any regulation,  order, injunction,
               rule or decree of any  governmental  authority or court or of any
               agreement  or  instrument  to  which  it is a party  and that the
               execution  hereof will not cause any such breach or default;  and
               that  no   proceeding   at  law  or  in  equity  or  before   any
               administrative  body is pending or threatened which would prevent
               Ag1 from  entering  into or  carrying  out its duties  under this
               Agreement or any of the other Funding Documents.

         (b)   To  keep  or  cause  to be kept in  full  force  and  effect  all
               insurance  required by the Security  Agreement and the Assignment
               of Lease.

         (c)   To fully  observe and perform  all of the terms,  covenants,  and
               conditions of this Agreement,  the Note, the Security  Agreement,
               the Assignment of Lease and such other  documents as are executed
               between the parties as of the date hereof,  which  documents  are
               referred to collectively herein as the "Funding Documents".

         (d)   To promptly pay and discharge or cause to be paid and  discharged
               all lawful applicable taxes and assessments, if any, whether they
               are imposed upon Ag1's personal property and improvements or upon
               Ag1; to pay promptly for all labor, services and materials and to
               prevent  the  filing  of liens or  claims  therefor  against  the
               property of Ag1.

         (e)   To use the Advances  hereunder  solely for the purposes set forth
               in paragraph 1 hereof.

         (f)   To permit DTN and DTN's agents at all reasonable times to inspect
               the books and records and the physical  assets of the business of
               Ag1.

         (g)   Not to assign this Agreement nor any interest in disbursements or
               Advances  to be  made  hereunder.  Not  to  transfer,  convey  or
               encumber the property which is security for the Advances,  except
               sale of the inventory in the ordinary course of business.

         (h)   To execute,  deliver  and record  where  appropriate  all Funding
               Documents.


         9. No Solicitation of  Transactions.  The stockholders of Ag1 executing
this  Agreement  for the  purpose  of  making  the  covenants  set forth is this
paragraph (the  "Stockholders")  and Ag1 agree that during the Term none of them
shall, and that they shall cause their subsidiaries and  representatives not to,
directly or  indirectly,  initiate,  solicit or encourage  any  inquiries or the
making of any  proposal  or offer with  respect to a sale,  transfer,  exchange,
merger, reorganization,  consolidation, business combination,  recapitalization,
liquidation,  dissolution or similar transaction  involving Ag1, or any purchase
or  sale  of  all or any  significant  portion  of the  assets  of Ag1  and  its
subsidiaries,  taken as a whole,  or fifteen percent (15%) of more of the equity
securities of Ag1 (any such proposal or offer being hereinafter referred to as a

                                       5
                                     -128-
<PAGE>

"Competing Transaction"). The Stockholders and Ag1 further agree that neither of
them shall, and that they shall cause their subsidiaries and representatives not
to, directly or indirectly, have any discussion with or provide any confidential
information or data relating to Ag1 or any of it  subsidiaries  to any person or
entity  relating  to a  Competing  Transaction  or  engage  in any  negotiations
concerning  a  Competing  Transaction,  or  otherwise  facilitate  any effort or
attempt to make or  implement  a  Competing  Transaction  or accept a  Competing
Transaction.  The  Stockholders  and Ag1 agree that they will take the necessary
steps to promptly inform each of their  subsidiaries and  representatives of the
obligations  undertaken in this paragraph.  Effective as of the date hereof, the
Stockholders   and  Ag1  shall  terminate  and  cause  their   subsidiaries  and
representatives   to  terminate   any  existing   activities,   discussions   or
negotiations  with any third  parties  that may be ongoing  with  respect to any
Competing  Transaction  and  shall  request  that all  confidential  information
previously  furnished  to any such  third  parties  be  returned  promptly.  The
Stockholders  represent  and warrant to DTN that together they are the owners of
more than ninety percent (90%) of the equity securities of Ag1.

         10. Conduct of Business of Ag1.  During the Term, Ag1 shall (i) conduct
its  business  and  operations  according  to its  ordinary  course of  business
consistent  with past practice,  except as otherwise  provided in this Agreement
and (ii) use its  reasonable  best  efforts  to  preserve  intact  its  business
organization  and its  relationship  with  licensors,  suppliers,  distributors,
employees,  customers and others having business relationships with them, except
as may otherwise be agreed by Ag1 and DTN.  Without  limiting the  generality of
the foregoing,  during the Term, without the prior written consent of DTN (which
consent will not be unreasonably  withheld so long as the act to be consented to
is within the ordinary course of business of Ag1), Ag1 shall not:

         (a)   change or amend its  Articles  of  Incorporation  or By-laws  (or
               similar governing documents);

         (b)   create, incur or assume any debt, liability or obligation, direct
               or indirect, whether accrued, absolute,  contingent or otherwise,
               other  than  obligations  incurred  in  the  ordinary  course  of
               business  consistent  with past practice,  or assume,  guarantee,
               endorse  or  otherwise  become  liable  or  responsible  (whether
               directly,  contingently  or otherwise) for the obligations of any
               other person, or make any loans or advances to any person, except
               in the ordinary course of business consistent with past practice;

         (c)   declare,  set  aside or pay any  dividend  or other  distribution
               (whether in cash,  stock or property or any combination  thereof)
               in respect of the capital  stock of Ag1,  or redeem or  otherwise
               acquire  any of the  capital  stock of Ag1 or split,  combine  or
               otherwise  similarly change the capital stock of Ag1 or authorize
               the  creation  or  issuance of or issue or sell any shares of its
               capital stock or any securities or obligations  convertible  into
               or  exchangeable  for,  or giving any person any right to acquire
               from it, any shares of its  capital  stock,  or agree to take any
               such action;

         (d)   change in any manner the rate or terms of  compensation  or bonus
               payable or to become payable to any director, officer or employee
               or  change  in any  manner  the rate or  terms of any  insurance,

                                       6
                                     -129-
<PAGE>

               pension,  severance,  or other employee benefit plan,  payment or
               arrangement made to, for or with any employees;

         (e)   enter  into  any   agreement  or   commitment   for  any  capital
               expenditure  in  excess  of  $50,000,   individually  or  in  the
               aggregate,  or enter into any  agreement  or  commitment  for any
               borrowing or capital financing;

         (f)   sell,  lease,  transfer  or dispose of any of its  properties  or
               assets, waive or release any rights of material value, or cancel,
               compromise,  release or assign any indebtedness owed to it or any
               claims held by it in each case other than in the ordinary  course
               of business consistent with past practice;

         (g)   make any  investment  of a capital  nature  either by purchase of
               stock or securities, contributions to capital, property transfers
               or  otherwise,  or by the  purchase of any  material  property or
               assets of any other individual, firm, corporation or entity; or

         (h)   enter  into an  agreement  to do any of the things  described  in
               clauses (a) through (g) above.

         11. Definitive Purchase Agreement.  DTN, Ag1 and the Stockholders agree
to negotiate  in good faith to complete  and execute a  definitive  purchase and
sale  agreement  consistent  with the  terms of the  Acquisition  Proposal  (the
"Purchase  Agreement") on or before  December 31, 1999.  The Purchase  Agreement
shall contain customary representations,  warranties and indemnifications by Ag1
and  the  Stockholders  as are  appropriate  to the  Acquisition.  The  Purchase
Agreement shall also contain customary  conditions  precedent to the obligations
of the parties to consummate the Purchase Agreement,  including, but not limited
to, the due diligence, lien searches, litigation and proceedings,  environmental
matters,  taxes  and other  liabilities  of Ag1  being  satisfactory  to DTN and
receipt of all approvals and consents of all necessary  regulatory  authorities.
In addition to such customary  conditions  precedent,  the obligations of DTN to
consummate  the  Acquisition  shall  be  conditioned  upon  the  approvals  (the
"Approvals")  of the Purchase  Agreement and the  Acuqisition  by DTN's Board of
Directors  and the  lenders  under  DTN's  credit  facilities.  If the  Purchase
Agreement is executed,  but the closing of the Purchase Agreement does not occur
on or before May 31, 2000, due to the breach of the Purchase Agreement by DTN or
due to the  failure  of DTN to obtain the  Approvals  (but not due to failure to
satisfy the customary  conditions  precedent referred to above or the failure of
the parties to the Purchase  Agreement other than DTN), then (i) one-half of the
aggregate  amount of Operational  Advances  outstanding on May 31, 2000 shall be
deemed forfeited by DTN and (ii) DTN and its subsidiaries will not engage in the
business  of  selling  agricultural  inputs  (such  as  seed,  fertilizer,   and
chemicals),  crop insurance or  agricultural  financing in competition  with the
business  of Ag1 during the one year period  commencing  June 1, 2000 and ending
May 31, 2001; provided,  however,  such non-compete provision shall not preclude
DTN or its  subsidiaries  from furnishing  agricultural  information in a manner
similar to its existing business.

                                       7
                                     -130-
<PAGE>

         12. Miscellaneous.


         (a)   Time is of the essence of this Agreement.

         (b)   No delay on the part of either party in exercising  any rights or
               remedies of such party under this  Agreement  shall  operate as a
               waiver nor shall any partial  exercise  or any partial  waiver of
               any such  right,  remedy or  privilege  preclude  any  subsequent
               exercise  of  such  right,  remedy,  or  privilege  hereunder  or
               otherwise.

         (c)   This Agreement shall bind and inure to the benefit of the parties
               hereto, their respective heirs, legal representatives, successors
               and, subject to the provisions hereof,  assigns, and shall remain
               in full force and effect so long as any  obligation  of Ag1 under
               this  Agreement  or under any of the  Funding  Documents  remains
               unfulfilled.

         (d)   This  Agreement  shall be governed in all respects by the laws of
               the  State  of  Nebraska  without  regard  to  choice  of laws or
               conflict of laws provisions thereof.

         (e)   This Agreement may be executed in any number of counterparts  and
               signatures may be delivered by facsimile,  each of which shall be
               enforceable   against  the  parties   actually   executing   such
               counterparts,  and all of which  together  shall  constitute  one
               instrument.

                            [SIGNATURE PAGE FOLLOWS]

                                       8
                                     -131-
<PAGE>



         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
day and year first above written.

                                     DATA TRANSMISSION NETWORK
                                     CORPORATION, a Delaware corporation



                                     By:/s/ Greg T. Sloma
                                        -----------------------------
                                        Greg T. Sloma
                                     Title: President and COO


                                     AG1.COM, INC., a Wyoming corporation



                                     By:/s/ William T. Rose
                                        -----------------------------
                                        William T. Rose
                                     Title:CEO



         The following  persons or entities  execute this Agreement for the sole
purpose of making the  representations,  warranties  and  covenants set forth in
Paragraphs 9 and 11 thereof.
                                        /s/ William T. Rose
                                        ------------------------------
                                        William T. Rose


                                        /s/Gerald B. Murphy
                                        ------------------------------
                                        Gerald B. Murphy


                                        /s/James Lewis
                                        ------------------------------
                                        James Lewis

                                       9
                                     -132-
<PAGE>


                                                                    Exhibit "A"

                                 PROMISSORY NOTE

$2,125,000                                                Date:November 8, 1999


         1. Ag1's Promise to Pay Principal and Interest. For value received, the
undersigned  maker  ("Ag1")  promises  to  pay  to  Data  Transmission   Network
Corporation ("Holder"), a Delaware corporation,  at its corporate office at 9110
West Dodge  Road,  Suite 200,  Omaha,  Nebraska,  or at such other  place as the
Holder of this Note may from time to time  designate,  the  principal sum of Two
Million One Hundred Twenty-Five  Thousand Dollars  ($2,125,000),  or such lesser
amount as may be the aggregate unpaid principal amount of the Advances,  as such
term is defined in the  Funding  Agreement  referred  to below,  advanced to Ag1
pursuant to such Funding  Agreement.  Ag1 promises to pay interest on the unpaid
principal  amount of the Advances from time to time outstanding from the date of
their  advance  until  payment  in full at the rates per  annum  which  shall be
determined  in accordance  with the  provisions  of the Funding  Agreement.  Ag1
promises  to pay  the  principal  amount  of the  Advances  from  time  to  time
outstanding  and any interest  thereon in accordance  with the provisions of the
Funding  Agreement.  Such payments of principal and interest shall be payable on
each date and in such manner as provided for in the Funding Agreement; provided,
however, that any payment which is not paid when due shall be payable on demand.
If not sooner paid, the principal balance,  together with all interest and other
sums due under this Note, shall be paid in full on or before May 31, 2002.

         2. Funding  Agreement.  This instrument is the Note referred to in, and
is subject to the terms and  provisions  of, the Funding  Agreement of even date
herewith  (as the same may be  amended,  modified or  supplemented  from time to
time,  herein called the "Funding  Agreement")  between  Ag1.Com,  Inc. and Data
Transmission Network Corporation, to which Funding Agreement reference is hereby
made for a statement of such terms and provisions.

         3. Grid Schedule.  All advances made by the Holder under this Note, and
all payments made by Ag1 on account of the unpaid principal amount hereof, shall
be recorded on the  schedule  attached to this Note,  and Ag1 agrees that in any
action or proceeding  instituted to collect or enforce  collection of this Note,
the amount shown as owing on this Note on the schedule  attached hereto shall be
deemed prima facie correct.

         4.  Default  by Ag1.  Should  default  be made  in the  payment  of any
installment  of  principal  or interest  when due, or if an event of default has
occurred as provided in the Funding  Agreement,  the whole sum of principal  and
interest shall become immediately due at the option of the Holder and regardless
of any prior forbearance.  Interest shall accrue following any default hereunder
at the default rate provided for in the Funding Agreement.

         5. Prepayment  Privilege.  The principal amount due on this Note may be
prepaid in whole or in part at any time.  All payments shall first be applied to
interest and then to principal.

                                       10
                                     -133-
<PAGE>

         6.  Governing  Law. This Note shall be construed  under and governed by
the substantive  laws of the State of Nebraska,  but not the choice of law rules
thereof.

         7.  Obligations  of Persons Under this Note. In this Note, the singular
shall include the plural and this Note shall be the joint and several obligation
of each Maker.

         8.  Assumability of this Note. This Note may not be assumed or assigned
by Ag1 without the express written  consent of the Holder hereof,  which consent
may be withheld in Holder's sole and absolute discretion.

         9. Maximum  Interest.  In no event whatsoever shall the amount paid, or
agreed to be paid, to the Holder for the use,  forbearance,  or retention of the
money to be loaned hereunder  ("Interest") exceed the maximum amount permissible
under  applicable law. If the performance or fulfillment of any provision hereof
shall result in Interest  exceeding  the limit for interest  prescribed  by law,
then the amount of such Interest  shall be reduced to the maximum rate which may
lawfully  be charged or  collected  by the Holder.  If,  from any  circumstances
whatsoever,  the Holder should  receive as Interest an amount which would exceed
the highest lawful rate,  the amount which would be excessive  Interest shall be
applied to the reduction of the principal  balance owing  hereunder  (or, at the
option of the Holder, be paid over to Ag1) and not to the payment of Interest.

         10.  Costs of  Collection.  Ag1  promises  to pay:  (a) all  costs  and
expenses of collection,  including without  limitation,  attorneys' fees, in the
event this Note or any portion of this Note is placed in the hands of  attorneys
for  collection  and such  collection is effected  without suit;  (b) attorneys'
fees, as determined  by the judge of the court,  and all other costs,  expenses,
and fees  incurred by the Holder in the event suit is instituted to collect this
Note or any portion of this Note;  (c) all costs and expenses  incurred by or on
behalf of the Holder in connection  with  collecting or otherwise  enforcing any
right of the Holder  under this Note or any other  instrument  given as security
for this Note; and (d) all costs and expenses,  including,  without  limitation,
attorneys'  fees,  incurred  by the Holder in  connection  with any  bankruptcy,
insolvency,  or  reorganization  proceeding  or  receivership  in  which  Ag1 is
involved, including, without limitation,  attorneys' fees incurred in making any
appearances  in any  such  proceeding  or in  seeking  relief  from  any stay or
injunction issued in or arising out of any such proceeding.

         11. Certain Waivers. Ag1 waives diligence,  grace, demand,  presentment
for payment,  exhibition  of this Note,  protest,  notice of protest,  notice of
dishonor,  notice of demand,  notice of  nonpayment,  and any and all  exemption
rights  against the  indebtedness  evidenced by this Note, and agrees to any and
all  extensions or renewals from time to time without  notice and to any partial
payments of this Note made before or after maturity and that no such  extension,
renewal,  or partial payment shall release Ag1 from the obligation of payment of
this Note or any installment of this Note.

                                       11
                                     -134-
<PAGE>



         EXECUTED as of November 8, 1999.

                                              AG1.COM, INC., a Wyoming
                                              corporation

                                              By:/s/ William T. Rose
                                                 --------------------------
                                                 William T. Rose
                                              Title:CEO
                                       12
                                     -135-


                               SECURITY AGREEMENT

         THIS SECURITY  AGREEMENT  ("Agreement")  is made and entered into as of
November 9, 1999, by and among Ag1.Com, Inc., a Wyoming corporation (hereinafter
referred to as the  "Debtor"),  and Data  Transmission  Network  Corporation,  a
Delaware corporation (hereinafter referred to as the "Secured Party").

                                   WITNESSETH:

         WHEREAS,   Debtor  has  executed  and  delivered  to  Secured  Party  a
Promissory Note in the principal amount not to exceed  $2,125,000 dated the same
date as this Agreement (hereinafter the "Note"); and

         WHEREAS,  in order to induce  Secured Party to accept the Note,  Debtor
has agreed to grant Secured Party a security interest in the property  described
below to secure the Note.

         NOW, THEREFORE, in consideration of the above recitals and the promises
and covenants contained herein, the parties agree as follows:

         1. Security  Interest and  Collateral.  As collateral  security for the
full and timely payment and performance of the Note, including all replacements,
renewals, extensions, substitutions and modifications thereof, and to secure the
prompt  payment  in  full of any and all  other  indebtedness  and  obligations,
liabilities,  covenants and duties of Debtor to Secured Party, of every kind and
description  (whether  or not  evidenced  by the Note or any  invoice,  billing,
guaranty  or other  instrument,  and  whether or not for the  payment of money),
direct or indirect, absolute or contingent,  liquidated or unliquidated,  due or
to become due, now existing or hereafter arising, including, without limitation,
any debt,  liability or obligation  owing from Debtor to Secured Party;  damages
for breach of this  Agreement  and expenses and  attorneys'  fees  chargeable to
Debtor, whether or not provided in this Agreement (collectively, "Obligations"),
Debtor  hereby  grants to Secured  Party a continuing  security  interest in the
following property of Debtor  (collectively,  the  "Collateral"),  including all
proceeds and products thereof:

         INVENTORY:  All inventory of every type and  description,  now owned or
         hereafter acquired by Debtor,  including inventory  consisting of whole
         goods,  spare parts or components,  supplies or materials and inventory
         acquired,  held or  furnished  for  sale,  for  lease or under  service
         contracts or for manufacture or processing,  or any other purpose,  and
         wherever located.

         DOCUMENTS OF TITLE: All warehouse  receipts,  bills of lading and other
         documents of title of every type and description now owned or hereafter
         acquired by Debtor.

         RECEIVABLES:  Each and every  right of Debtor to the  payment of money,
         whether such right to payment now exists or hereafter  arises,  whether
         such right to payment arises out of a sale, lease or other  disposition
         of goods or other  property,  out of a rendering of services,  out of a
         loan,  out of the  overpayment  of taxes or other  liabilities,  or any

                                     -136-
<PAGE>

         other  transaction or event,  whether such right to payment is created,
         generated or earned by Debtor or by some other person whose interest is
         subsequently transferred to Debtor, whether such right to payment is or
         is not  already  earned by  performance,  and  howsoever  such right to
         payment  is or is not  already  earned by  performance,  and rights and
         interests  (including  all liens,  security  interests and  guaranties)
         which  Debtor  may at any time  have by law or  agreement  against  any
         account  debtor or other  person  obligated to make any such payment or
         against  any  property  of such  account  debtor or other  person;  all
         contract  rights,   chattel  papers,   bonds,   notes  and  other  debt
         instruments,  and all loans and obligations receivable, tax refunds and
         other rights to payment in the nature of general intangibles.

         EQUIPMENT AND FIXTURES: All equipment of every type and description now
         owned or hereafter  acquired by Debtor including  (without  limitation)
         all  present  and  future  machinery,  vehicles,  furniture,  fixtures,
         manufacturing  equipment,  shop  equipment,  office and record  keeping
         equipment,   parts,  tools,   supplies  and  all  other  goods  (except
         inventory)  used or  bought  for use by  Debtor  for  any  business  or
         enterprise  and  including  all goods  that are or may be  attached  or
         affixed to or otherwise become fixtures upon any real property.

         GENERAL  INTANGIBLES:   All  general  intangibles  of  every  type  and
         description  now  owned or  hereafter  acquired  by  Debtor,  including
         (without  limitation)  all  present  and future  domestic  and  foreign
         patents,  patent applications,  software (source code and object code),
         software applications,  trademarks, trademark applications, copyrights,
         trade  names,  trade  secrets,  shop  drawings,  engineering  drawings,
         blueprints,    specifications,    parts   lists,   manuals,   operating
         instructions,  customer  or  supplier  lists  and  contracts,  contract
         rights,  licenses,  permits,  franchises,  the  right  to use  Debtor's
         corporate name and the goodwill of Debtor's business.

         2. Representations,  Warranties and Agreements of Debtor. Debtor hereby
represents, warrants and agrees that:

                  (a)  Debtor  has (or  will  have at the time  Debtor  acquires
         rights in Collateral  hereafter arising) absolute title to each item of
         Collateral  free  and  clear  of  all  security  interests,  liens  and
         encumbrances,  and will  defend the  Collateral  against  all claims or
         demands of all persons other than Secured  Party.  Debtor will not sell
         or otherwise dispose of any material Collateral or any interest therein
         (other than the sale of inventory in the ordinary course of business of
         Debtor and other than the disposition of obsolete or damaged equipment)
         without the prior written consent of Secured Party.

                  (b)  Debtor  will not  permit any  tangible  Collateral  to be
         located in any state (and, if county filing is required, in any county)
         in which a financing  statement covering such Collateral is required to
         be, but has not in fact been,  filed in order to perfect  the  security
         interest herein granted to Secured Party.

                  (c) Each  right to  payment  and  each  instrument,  document,
         chattel paper and other agreement constituting or evidencing Collateral

                                       2
                                     -137-
<PAGE>

         is (or will be when  arising or issued) the valid,  genuine and legally
         enforceable obligation,  subject to no defense, set-off or counterclaim
         (other than those  arising in the  ordinary  course of business) of the
         account  debtor or other obligor  named therein or in Debtor's  records
         pertaining  thereto as being obligated to pay such  obligation.  Debtor
         will neither agree to any material  modification or amendment nor agree
         to any  cancellation  of any such  obligation  without  Secured Party's
         prior  written  consent,  and will not  subordinate  any such  right to
         payment to claims of other  creditors of such  account  debtor or other
         obligor.

                  (d)  Debtor  will  (i)   promptly  pay  all  taxes  and  other
         governmental  charges levied or assessed upon or against any Collateral
         or upon or against  the  creation,  perfection  or  continuance  of the
         security  interest  herein  granted  to  Secured  Party;  (ii) keep all
         Collateral  free  and  clear  of  all  security  interests,  liens  and
         encumbrances,  except the security  interest  herein granted to Secured
         Party;  (iii) at all  reasonable  times,  permit  Secured  Party or its
         representatives to examine or inspect any Collateral, wherever located,
         and to examine,  inspect and copy Debtor's books and records pertaining
         to the Collateral  and its business and financial  condition and, after
         the occurrence of an Event of Default,  to discuss with account debtors
         and other  obligors  requests  for  verifications  of  amounts  owed to
         Debtor;  (iv) keep  accurate and  complete  records  pertaining  to the
         Collateral  and  pertaining  to each  Debtor's  business and  financial
         condition and submit to Secured Party such periodic reports  concerning
         the  Collateral and each Debtor's  business and financial  condition as
         Secured Party may from time to time  reasonably  request;  (v) promptly
         notify  Secured  Party  of  any  loss  of or  material  damage  to  any
         Collateral or of any adverse change,  known to Debtor,  in the prospect
         of payment of any sums due on or under any  instrument,  chattel paper,
         or account constituting  Collateral;  (vi) if Secured Party at any time
         so  requests  after the  occurrence  of an Event of  Default,  promptly
         deliver to Secured  Party any  instrument,  document  or chattel  paper
         constituting Collateral,  duly endorsed or assigned by Debtor; (vii) at
         all times keep all tangible Collateral insured against risk of loss and
         such other risks and in such  amounts as Secured  Party may  reasonably
         request,  with any loss being payable to Secured Party to the extent of
         its  interest;   (viii)  from  time  to  time  execute  such  financing
         statements as Secured Party may reasonably  require in order to perfect
         the security  interest  herein granted to Secured Party;  (ix) pay when
         due or reimburse Secured Party on demand for all costs of collection of
         any of the Obligations and all other out-of-pocket  expenses (including
         in each case all reasonable  attorneys' fees) incurred by Secured Party
         in connection with the creation, perfection, satisfaction,  protection,
         defense or  enforcement  of the  security  interest  herein  granted to
         Secured  Party or the  creation,  continuance,  protection,  defense or
         enforcement  of  this  Agreement  or any  or  all  of the  Obligations,
         including expenses incurred in any litigation, bankruptcy or insolvency
         proceedings;  (x) execute,  deliver or endorse any and all instruments,
         documents,  assignments,  security  agreements and other agreements and
         writings  which  Secured  Party may at any time  reasonably  request in
         order to secure,  protect,  perfect or enforce  the  security  interest
         herein  granted to Secured Party and Secured  Party's rights under this
         Agreement;  and (xi) permit  Secured Party at any time and from time to
         time  to send  requests  to  account  debtors  or  other  obligors  for
         verification of amounts owed to Debtor.  If Debtor at any time fails to
         perform  or observe  any  agreement  contained  in this  Section  2(d),
         immediately  upon the  occurrence  of such failure,  without  notice or
         lapse of time, Secured Party may (but need not) perform or observe such

                                       3
                                     -138-
<PAGE>

         agreement on behalf and in the name,  place and stead of Debtor (or, at
         Secured Party's option,  in Secured Party's own name) and may (but need
         not) take any and all other actions which Secured Party may  reasonably
         deem  necessary  to cure or correct such  failure  (including,  without
         limitation,   the  payment  of  taxes,  the  satisfaction  of  security
         interests, liens, or encumbrances, the performance of obligations under
         contracts or agreements  with account  debtors or other  obligors,  the
         procurement  and  maintenance of insurance,  the execution of financing
         statements,  the  endorsement of  instruments,  and the  procurement of
         repairs,  transportation or insurance);  and, except to the extent that
         the effect of such payment  would be to render any loan or  forbearance
         of money usurious or otherwise illegal under any applicable law, Debtor
         shall  thereupon  pay Secured  Party on demand the amount of all moneys
         expended and all costs and expenses  (including  reasonable  attorneys'
         fees)  incurred by Secured Party in  connection  with or as a result of
         Secured Party's  performing or observing such agreements or taking such
         actions,  together  with  interest  thereon  from the date  expended or
         incurred by Secured Party at the highest rate then applicable under the
         Note. To facilitate  the  performance or observance by Secured Party of
         such agreements of Debtor,  Debtor hereby  irrevocably  appoints (which
         appointment  is  coupled  with  an  interest)  Secured  Party,  or  its
         delegate, as the attorney-in-fact of Debtor with the right (but not the
         duty) from time to time to create, prepare, complete, execute, deliver,
         endorse  or file,  in the name and on  behalf  of  Debtor,  any and all
         instruments,   documents,   financing   statements,   applications  for
         insurance and other  agreements,  and writings required to be obtained,
         executed, delivered or endorsed by Debtor under this Section 2.

         3. Collection  Rights of Secured Party.  Secured Party may, at any time
after the occurrence of an Event of Default,  notify any account debtor,  or any
other person obligated to pay any amount due, that such chattel paper,  account,
or other right to payment has been assigned or  transferred to Secured Party for
security  and shall be paid  directly  to Secured  Party.  If  Secured  Party so
requests  at any time,  Debtor  will so notify  such  account  debtors and other
obligors in writing and will indicate on all invoices to such account debtors or
other obligors that the amount due is payable  directly to Secured Party. At any
time after  Secured  Party or Debtor  gives such notice to an account  debtor or
other obligor,  Secured Party may (but need not), in its own name or in Debtor's
name,  demand,  sue for,  collect or receive  any money or  property at any time
payable or  receivable  on account  of, or  securing,  any such  chattel  paper,
account,  or other  right  to  payment,  or grant  any  extension  to,  make any
compromise  or settlement  with or otherwise  agree to waive,  modify,  amend or
change the obligations  (including  collateral  obligations) of any such account
debtor or other obligor.

         4.  Events  of  Default.   Each  of  the  following  occurrences  shall
constitute an event of default  under this  Agreement  (herein  called "Event of
Default"):  (i) Debtor shall fail to pay any or all of the Obligations  when due
or (if  payable on demand)  on demand,  or shall fail to observe or perform  any
covenant or agreement herein binding on it; (ii) any  representation or warranty
by Debtor set forth in this  Agreement or made to Secured Party in any financial
statements or reports submitted to Secured Party by or on behalf of Debtor shall
prove materially false or misleading; (iii) a garnishment,  summons or a writ of
attachment  shall be issued  against or served  upon the  Secured  Party for the
attachment of any property of Debtor or any indebtedness  owing to Debtor;  (iv)
the Debtor shall  voluntarily  file, or have filed against it  involuntarily,  a

                                       4
                                     -139-
<PAGE>

petition under the United States Bankruptcy Code; (v) there shall be an Event of
Default under the Note, as defined therein,  or (vi) Secured Party shall in good
faith believe that the prospect of due and punctual payment of any or all of the
Obligations is impaired.

         5. Remedies Upon Event of Default.  Upon the  occurrence of an Event of
Default  under  Section 4 above and at any time  thereafter,  Secured  Party may
exercise any one or more of the  following  rights or remedies:  (i) declare all
unmatured  Obligations  to be  immediately  due and payable,  and the same shall
thereupon be immediately due and payable, without presentment or other notice or
demand,  (ii) exercise and enforce any or all rights and remedies available upon
default to a secured party under the Uniform Commercial Code, including, but not
limited to, the right to take possession of any Collateral,  proceeding  without
judicial  process  or by  judicial  process,  and the  right to  sell,  lease or
otherwise dispose of any or all of the Collateral,  and in connection therewith,
Secured  Party may require  Debtor to make the  Collateral  available to Secured
Party  at a  place  to be  designated  by  Secured  Party  which  is  reasonably
convenient to both parties,  and if notice to Debtor of any intended disposition
of Collateral or any other  intended  action is required by applicable  law in a
particular  instance,  such notice shall be deemed  commercially  reasonable  if
given in the manner specified in Section 6 below at least ten (10) calendar days
prior to the date of disposition or other action,  (iii) apply any and all money
owing by Secured  Party to Debtor  under any funding  agreement  or similar type
agreement now or hereafter  entered into between Secured Party and Debtor to the
payment of the Obligations,  or (iv) exercise or enforce any or all other rights
or  remedies  available  to  Secured  Party  by law  or  agreement  against  the
Collateral,  against  Debtor or against any other person or  property.  Upon the
occurrence of the Event of Default, all Obligations shall be immediately due and
payable without demand or notice therefor.

         6.  Notices.  All  notices  to be  given  to  Debtor  shall  be  deemed
sufficiently  given if delivered by overnight courier or mailed by registered or
certified mail, postage prepaid and return receipt  requested,  to Debtor at the
address  set forth  opposite  its name or at the most  recent  address  shown on
Secured Party' records.

         7. Binding Effect. This Agreement shall be binding upon and shall inure
to the  benefit  of  the  parties  hereto  and  their  respective  heirs,  legal
representatives, successors and assigns.

         8.  Modification;  Amendment;  Waiver.  This Agreement can be modified,
amended,  terminated or discharged,  and the security  interest can be released,
only explicitly in a writing signed by Secured Party. A waiver signed by Secured
Party shall be  effective  only in the  specific  instance  and for the specific
interest given.

         9. Severability.  If any term, provision, covenant or condition of this
Agreement is held by a Court of competent  jurisdiction  to be invalid,  void or
unenforceable,  the  remainder of the  provision,  covenant or  condition  shall
remain in full  force and effect and shall in no way be  affected,  impaired  or
invalidated, unless to do so would substantially destroy the fundamental purpose
of this Agreement.

         10. Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of Nebraska without regard to its conflict
of laws principles.

                                       5
                                     -140-
<PAGE>

         IN WITNESS WHEREOF,  this Security  Agreement has been duly executed by
Debtor and Secured Party as of the day and year first above-written.

Address:                                     AG1.COM,     INC.,    a
                                             Wyoming corporation, Debtor
Ag1.Com, Inc.


Attention: President                         By: /s/ William T. Rose
                                                 ------------------------------
                                                 William T. Rose
                                             Title: CEO



Address:                                    DATA TRANSMISSION NETWORK
                                            CORPORATION, a Delaware corporation,
Data Transmission Network Corporation       Secured Party
9110 West Dodge Road, Suite 200
Omaha, Nebraska 68114
Attention: President                        By: /s/ Greg T. Sloma
                                                -------------------------------
                                                Greg T. Sloma, President

                                       6
                                     -141-



                            ASSET PURCHASE AGREEMENT

         THIS ASSET PURCHASE AGREEMENT is made and entered into this 11th day of
November,  1999,  by and  among  FlightBrief  Online  Service,  Inc.,  a Georgia
corporation  ("Seller"),  Data  Transmission  Network  corporation,  a  Delaware
corporation ("Buyer"), and Gregg F. Lewis, an individual (the "Stockholder").

                                    RECITALS:

         A.  Seller  is  engaged  in  the  business  of  creating,   assembling,
marketing,   maintaining   and  publishing  two  web  sites  (the  "Web  Sites")
www.weatherconcepts.com,  which provides real-time weather graphics to aviation,
marine, farming and construction  subscribers,  and  www.flightbrief.com,  which
provides  real-time  weather graphics and interactive  flight planners,  airport
databases and other resources to aviation subscribers (the "Business").

         B. Seller  desires to sell certain of its assets used in the conduct of
the Business, and Buyer desires to acquire such assets.

         C. The  Stockholder,  as the owner of all of the issued and outstanding
stock of Seller,  joins in this  Agreement to confirm  certain  representations,
warranties  and  agreements of Seller  herein,  to agree to certain  restrictive
covenants, and to indemnify Buyer in connection with certain matters.

         In  consideration  of the mutual  covenants  and  agreements  set forth
herein,  and  for  other  good  and  valuable   consideration  the  receipt  and
sufficiency of which are hereby acknowledged, Seller, the Stockholder and Buyer,
intending to be legally bound, agree as follows:

         1. Purchase and Sale. Buyer agrees to purchase from Seller,  and Seller
agrees to sell to Buyer,  the Business and all right,  title and interest in and
to the following property and assets of Seller (collectively the "Assets"):

         (a)   All of Seller's computer hardware, web hosting servers, equipment
               and other tangible  personal  property used in the conduct of the
               Business,  including  but not  limited  to the  items  listed  on
               Schedule  1  attached  hereto  and  incorporated  herein  by this
               reference;

         (b)   All of Seller's right, title and interest in the software used in
               the Business to the extent assignable,  including but not limited
               to the software listed on Schedule 1 attached hereto;

         (c)   All of Seller's  right,  title and interest in the  subscriptions
               (whether  written,  oral, or entered into via the Web Sites) with
               customers to use the Web Sites,  including but not limited to the
               prepaid and unearned revenue from such subscriptions;

                                     -142-
<PAGE>

         (d)   All right, title and interest in and to the registered  trademark
               FLIGHTBRIEF   and  the   unregistered   trademarks   WXBRIEF.COM,
               WEATHERCONCEPTS.COM  and  FLIGHTBRIEF.COM  (the "Trademarks") and
               the Internet domain names  WXBRIEF.COM,  WEATHERCONCEPTS.COM  and
               FLIGHTBRIEF.COM (the "Domain Names");

         (e)   All of Seller's  information,  files,  records,  data, plans, and
               recorded  knowledge,  including  subscriber  and supplier  lists,
               related to the Business and similar or related data; and

         (f)   All of  Seller's  goodwill  pertaining  to or arising  out of the
               Business.

         2. Consideration.  Buyer agrees to pay, and Seller agrees to accept, as
the entire aggregate  consideration for the Assets and the noncompete agreements
of Seller  and the  Stockholder  referred  to in  Paragraph  15, the cash sum of
$18,000 plus the amount  determined  by  multiplying  $108.00  (the  "Subscriber
Price")  by the lesser of (i) the  aggregate  number of  subscribers  to the Web
Sites on the Closing Date or (ii) the aggregate number of subscribers to the Web
Sites on the date  (the  "Settlement  Date")  100 days  after the  Closing.  One
Hundred Five Thousand Dollars  ($105,000) of the purchase price shall be paid by
Buyer to Seller on the Closing.  Prepaid  subscription revenue shall be prorated
as of the Closing Date and the unearned  portion thereof shall be paid by Seller
to Buyer at Closing or sum amount  shall be credited  against the payment due to
Seller at Closing.  Eighty Seven Thousand Five Hundred Dollars  ($87,500) of the
purchase price shall be paid to Seller from the escrowed funds referred to below
when the Web  Sites  are  operational  using  the  servers  located  at  Buyer's
facilities.  The balance of the purchase price shall be paid to Seller,  without
interest,  on the Settlement Date. The  consideration to be given by Buyer under
this  paragraph  shall  be  allocated  among  the  Assets  and  such  noncompete
agreements as described in Schedule 3. Seller,  the  Stockholder  and Buyer each
agree that they will not take a position  on any income tax  return,  before any
governmental  agency  charged with the  collection  of any income tax, or in any
judicial proceeding which is in any way inconsistent with such allocation.  Time
is of the essence with respect to payment on the  Settlement  Date.  As security
for such payment, Seller shall escrow all conveyance instruments and Buyer shall
escrow the cash sum of $262,500  with a title  insurance  company  acceptable to
Buyer and Seller (the  "Escrow  Agent") at Closing.  On the date that the Escrow
Agent is notified by Seller and Buyer that the Web Sites are  operational  using
the  servers  located at Buyer's  facilities,  the Escrow  Agent  shall  release
$87,500 to Buyer as provided  above.  On the  Settlement  Date, the Escrow Agent
shall  release  the funds to Seller to the extent  the  purchase  price  remains
unpaid and shall  release the  conveyance  instruments  and any surplus  cash to
Buyer;  provided,  however,  in the event Buyer,  prior to the Settlement  Date,
notifies  the  Escrow  Agent in  writing  that it has a bona  fide and  material
dispute with Seller under this Agreement,  then all of the escrowed funds are to
be retained by the Escrow Agent until the dispute is  resolved.  Interest on the
escrowed funds shall belong to Buyer unless otherwise agreed or imposed upon the
parties by a court of competent  jurisdiction.  On or before the Closing,  Buyer
and Seller shall enter into an escrow agreement with the Escrow Agent consistent
with the terms set forth in this paragraph.

         3. Assumption of Liabilities. Buyer shall assume, agree to perform, and
discharge  when  due  only  those  obligations  of  Seller  arising  out  of the

                                       2
                                     -143-
<PAGE>

subscriptions listed on Schedule 2 with respect to the period from and after the
Closing Date (the Assumed Liabilities"). Seller and Buyer agree that, other than
the  Assumed  Liabilities,  Buyer  does not  agree to assume  and shall  have no
responsibility  for any of the debts,  obligations or liabilities of Seller (the
"Excluded  Liabilities"),  all of which shall remain the sole  responsibility of
and shall be paid and  discharged  by Seller as they  become due.  The  Excluded
Liabilities include without limitation all of the following:

         (a)   Any tax  liability or tax  obligation of Seller,  its  directors,
               officers,  shareholders  and  agents  which  has  been  or may be
               asserted by any taxing authority,  including  without  limitation
               any such liability or obligation  arising out of or in connection
               with this Agreement or the transactions contemplated hereby.

         (b)   Any liability or obligation of Seller whether  incurred prior to,
               at or subsequent to the Closing Date for any amounts due or which
               may  become  due to any  person  or  entity  who is or has been a
               holder of any debt or equity security of Seller.

         (c)   Any  trade  account  payable  or note  payable  of  Seller or any
               contract   obligation   of  Seller   (other   than  the   Assumed
               Liabilities)  whether  incurred prior to, at or subsequent to the
               Closing Date,  including  without  limitation all  obligations to
               Unisys Corporation  (including the payment for termination of the
               contract with Unisys Corporation), Freese-Notis, and NW Aero.

         (d)   Any liability or obligation arising out of any litigation,  suit,
               proceeding,  action, claim or investigation,  at law or in equity
               or in arbitration,  related to Seller's operation of the Business
               prior to the Closing Date.

         (e)   Any claim, liability or obligation,  known or unknown, contingent
               or  otherwise,  the  existence  of  which  is  a  breach  of,  or
               inconsistent  with, any  representation,  warranty or covenant of
               Seller set forth in this Agreement.

         (f)   Any liability or obligation specifically stated in this Agreement
               or the Schedules hereto as not to be assumed by Buyer.

         4. Transfer Documents. Seller shall sell, transfer, assign, convey, and
deliver to Buyer at the  Closing  the Assets by (i) a warranty  bill of sale and
assignment  in the form of Exhibit A hereto,  (ii) the  Registrant  Name  Change
Agreements  for submission to Network  Solutions,  Inc. in the form of Exhibit B
hereto to transfer the Domain  Names,  (iii) an  Assignment  of  Trademarks  for
submission to the Patent and Trademark Office in the form of Exhibit C hereto to
transfer the Trademarks,  and (iv) such other good and sufficient instruments of
sale,  assignment,  conveyance  and transfer as shall be required to effectively
vest in Buyer all of Seller's right,  title,  and interest in and to the Assets,
free and clear of all liens, encumbrances,  security interests,  actions, claims
and equities of any kind  whatsoever.  Seller agrees to take such actions as may
be necessary to make available for use by Buyer the Domain Names and Trademarks,
including without limitation  Seller's change of its corporate name. Buyer shall
be entitled to  possession  of the Assets  upon the  Closing.  From time to time
after the Closing, at Buyer's request and without further consideration,  Seller

                                       3
                                     -144-
<PAGE>

agrees to execute and deliver such other  instruments of conveyance and transfer
and take such other action as Buyer  reasonably may require more  effectively to
convey, transfer to and vest in Buyer, and to put Buyer in possession of, any of
the Assets.

         5. Closing. Subject to the termination of this Agreement as provided in
Section 10, the closing of the transactions  provided for in this Agreement (the
"Closing") shall take place at _______________________________________, at 10:00
a.m. on ___________,  1999 (the "Closing Date"),  or such other place,  time and
date as the parties may agree. Time is of the essence of this Agreement.

         6. Obligations to Employees. Seller agrees that it shall be responsible
for any obligations to any of its employees which  heretofore may have arisen or
hereafter  may arise by  reason  of any  services  rendered  by such  employees,
including  but not  limited  to  salaries,  bonuses,  vacation  pay,  retirement
benefits, and other fringe benefits; and Seller hereby agrees to pay all of such
obligations directly to the employees involved when due. Seller agrees timely to
pay  all  payroll  tax,  withholding,  and  unemployment  compensation  payments
required to be made with respect to the  compensation  of such  employees and to
hold Buyer  harmless  therefrom.  Seller shall furnish to Buyer such evidence of
Seller's  compliance  with the provisions of this paragraph as Buyer  reasonably
may request from time to time.

         7.  Representations  and Warranties.  Seller  warrants,  represents and
covenants to and with Buyer:

         (a)   That  Seller has full right and  lawful  authority  to enter into
               this Agreement and to sell the Assets; that Seller's  performance
               of its  obligations  under this  Agreement  will not  violate any
               agreement,  document,  trust (constructive or otherwise),  order,
               judgment  or decree to which  Seller is a party or by which it is
               bound;  and that,  upon the transfer and assignment of the Assets
               to Buyer as hereinbefore  mentioned,  Buyer will acquire good and
               merchantable  title  thereto,   free  and  clear  of  any  liens,
               encumbrances,  security interests,  actions, claims, and equities
               of any kind whatsoever.

         (b)   That  Seller  is the  sole and  lawful  owner of and has good and
               marketable  title to all of the  Assets,  free  and  clear of any
               liens,  encumbrances,  security interests,  actions,  claims, and
               equities of any kind whatsoever;  provided, however, with respect
               to software Seller  represents  that it is the rightful  licensee
               (not  owner) and that it has the right to assign  its  license to
               Buyer,   and  with  respect  to   trademarks,   Seller  makes  no
               representation  as to the  ability  of third  parties to assert a
               competing claim to any mark used in Seller's business.

         (c)   All material items of tangible  personal  property to be acquired
               by  Buyer  pursuant  to  this  Agreement  are in  good  operating
               condition, subject to normal wear.

                                       4
                                     -145-
<PAGE>

         (d)   That  there  are  no  suits,   arbitrations  or  other  legal  or
               governmental  proceedings  pending or threatened  against  Seller
               which might conceivably affect the title to the Assets.

         (e)   That Seller has duly and timely  filed all  federal,  state,  and
               local tax returns of every kind  whatsoever  and has paid in full
               the  tax  liability  shown  on  such  returns;   that  no  unpaid
               deficiencies  are in existence  which have been asserted  against
               Seller by any  official  or  agency as a result of the  filing of
               such returns;  and that, to the knowledge of Seller, there is not
               now pending any examination  with respect to any such returns nor
               does Seller know of any impending examination with respect to any
               such returns.

         (f)   That  promptly  after the Closing Date Seller shall pay all sales
               and use taxes  imposed  on or  collectible  by  Seller  and shall
               furnish  to Buyer  evidence  that all of  Seller's  sales and use
               taxes  have  been  paid  (it  being   understood  that  Buyer  is
               purchasing the Assets for use in its business of producing  goods
               and services).

         (g)   To the best of Seller's  knowledge,  use of the Trademarks do not
               require the  consent of any other  person and the same are freely
               transferable  and are owned  exclusively by Seller free and clear
               of any licenses,  charges,  attachments,  liens,  encumbrances or
               adverse  claims.  No other  person has an interest in or right or
               license to use, or the right to license others to use, any of the
               Trademarks.  There are no claims or demands  of any other  person
               pertaining  thereto and no proceedings have been instituted,  or,
               to the best of Seller's  knowledge,  are  pending or  threatened,
               which  challenge  Seller's  rights in respect of the  Trademarks.
               None of the  Trademarks  is  subject  to any  outstanding  order,
               decree,  judgment or  stipulation,  or, to the best  knowledge of
               Seller,  is being infringed by others. No claim has been made and
               no  proceeding  has  been  filed  or,  to the  best  of  Seller's
               knowledge,  is  threatened  to  be  filed  charging  Seller  with
               infringement of any adversely held trade name or trademark.

         (h)   There  is  no  undisclosed  fact,   development,   or  threatened
               development  with  respect to the markets,  products,  customers,
               vendors,  suppliers,  operations,  assets  or  prospects  of  the
               Business  which  are  known  to  Seller  which  would  materially
               adversely  affect the  business,  operations  or prospects of the
               Business considered as a whole, other than such conditions as may
               affect as a whole the economy generally.

         (i)   Seller's  tax return for the year 1998  furnished to Buyer fairly
               and accurately  represents the financial operations and condition
               of the Business for such year.

         (j)   That   Seller   has  listed  on   Schedule  2  all  of   Seller's
               subscriptions to the Web Sites as of ____________,  1999;  Seller
               has no other  contracts  (oral or written or entered into via the
               Web  Sites)  with  the  customers  of the  Business.  Seller  has
               delivered  to Buyer  true,  correct  and  complete  copies of all
               written  contracts with  subscribers to the Web Sites relating to
               the Business,  and written  summaries of the terms of all oral or

                                       5
                                     -146-
<PAGE>

               computer generated contracts relating to the Business, and all of
               such  contracts  are  presently  in full force and effect and are
               assignable to Buyer.

         (k)   Except to the extent  disclosed to Buyer in writing  prior to the
               date of this Agreement,  all Date Data and Date-Sensitive Systems
               (each  as  hereinafter  defined)  are  Year  2000  Compliant  (as
               hereinafter defined). "Date Data" means any data of any type that
               includes  date  information  or which is otherwise  derived from,
               dependent  on or  related  to date  information.  "Date-Sensitive
               System"  means any  software,  microcode  or  hardware  system or
               component,  including any electronic or electronically controlled
               system or  component,  that  processes  any Date Data and that is
               included within the Assets.  "Year 2000 Compliant" means (i) with
               respect  to Date  Data,  that such data is in proper  format  and
               accurate  for  all  dates  in  the  twentieth  and   twenty-first
               centuries,  and (ii) with respect to Date-Sensitive Systems, that
               each such system  accurately  processes all Date Data,  including
               for the twentieth and twenty-first centuries, without loss of any
               functionality  or  performance,  including  but  not  limited  to
               calculating,  comparing,  sequencing, storing and displaying such
               Date Data (including all leap year considerations),  when used as
               a stand-alone  system or in  combination  with other  software or
               hardware.

         (l)   That from the date of this Agreement to the Closing Date,  Seller
               will conduct the Business in a normal and regular manner and will
               use its best efforts to retain the subscribers to the Web Sites.

         (m)   That from the date of this Agreement to the Closing Date,  Seller
               agrees to aid and  assist  Buyer in  obtaining  access to the Web
               Sites and servers to coordinate  and  facilitate  the transfer of
               the Business to Buyer at the Closing and to coordinate in advance
               the input of Buyer's content on to the Web Sites.

         8. Indemnification.  Provided that Buyer has fully performed hereunder,
Seller and the Stockholder,  jointly and severally, agree to indemnify Buyer and
hold Buyer  harmless from and against any and all liability,  loss,  litigation,
expense or claim (including  reasonable attorney fees) arising out of, resulting
from, relating to, in the nature of or caused by:

         (a)   Any material  breach  occurring  within  twelve (12) months after
               Closing of any  representation,  warranty,  covenant or agreement
               made by Seller and/or the Stockholder in this Agreement or in any
               agreement, statement,  certificate,  instrument or other document
               furnished  or  delivered or to be furnished or delivered to Buyer
               pursuant   hereto  or  in   connection   with  the   transactions
               contemplated by this Agreement;

         (b)   The ownership or operation of the Assets or the Business prior to
               the Closing  Date  (except to the extent  included in the Assumed
               Liabilities);

         (c)   The Excluded Liabilities; and

                                       6
                                     -147-
<PAGE>




         (d)   Buyer agrees to give Seller and Stockholder  reasonable notice of
               and  opportunity  to defend  and/or cure any  indemnity  claim it
               intends to present.

         Buyer agrees to indemnify  Seller and  Stockholder  and hold Seller and
Stockholder harmless from and against any and all liability,  loss,  litigation,
expense or claim (including  reasonable attorney fees) arising out of, resulting
from,  relating  to, in the nature of or caused by (i) Buyer's  material  breach
hereunder, (ii) the Buyer's failure to perform under the Assumed Liabilities, or
(iii) Buyer's act or omission in its post-Closing operation of the Assets.

         9.  Conditions to Buyer's  Obligations at Closing.  The  obligations of
Buyer  to  purchase  the  Assets   hereunder  and  consummate  the  transactions
contemplated  hereby are conditioned on the satisfaction,  unless waived, of the
following conditions at the Closing:

         (a)   The  representations  and warranties  made by Seller in Section 7
               shall be true and  correct  in all  material  respects  as of the
               Closing Date and Seller shall  execute and deliver a  certificate
               to such effect to Buyer at Closing.

         (b)   Buyer  shall  have  determined  in its sole  discretion  that the
               Assets being transferred to Buyer hereunder are free and clear of
               any liens, claims, encumbrances, charges and the like.

         (c)   Seller shall have in all material respects performed and complied
               with all of its agreements and obligations hereunder which are to
               be performed or complied with prior to or on the Closing Date.

         10.      Termination.

         (a)   Termination by Mutual Consent.  At any time prior to the Closing,
               this  Agreement may be terminated  by mutual  written  consent of
               Buyer and Seller.

         (b)   Termination  by Buyer.  Buyer may terminate this Agreement at any
               time prior to the Closing by delivery of written notice to Seller
               if:

                  (i) Seller has failed to perform  any of its  covenants  under
         this Agreement or has violated this Agreement in any material  respect;
         or
                  (ii) Any  representation  or  warranty  made by Seller in this
         Agreement is false or  inaccurate  in any material  respect or there is
         any material misrepresentation or material omission by Seller.

         (c)   Termination by Seller. Seller may terminate this Agreement at any
               time prior to the Closing by delivery of written  notice to Buyer
               if:

                  (i) Buyer has violated this Agreement in any material respect;
         or

                                       7
                                     -148-
<PAGE>

                  (ii)  Any  representation  or  warranty  made by Buyer in this
         Agreement is false or  inaccurate  in any material  respect or there is
         any material misrepresentation or material omission by Buyer.

         (d)   Effect of  Termination.  In the event of  termination as provided
               above,  this  Agreement  shall then become of no further force or
               effect,  all parties hereto shall bear their own costs associated
               with this Agreement and all transactions  mentioned  herein,  and
               there  shall be no  obligation  on the part of Buyer or Seller or
               the officers, directors or shareholders of Buyer or Seller.

         11. Bulk Sales. The parties  represent that no inventory of any kind is
being sold by Seller to Buyer  hereunder;  thus neither party intends to provide
any notice  under the bulk sales  provisions  of the  Uniform  Commercial  Code.
Seller has taken any and all actions  required  under local law with  respect to
the  transactions  contemplated  by this Agreement and will satisfy on or before
the  Closing  Date  (or  make  arrangements  satisfactory  to  Buyer in its sole
discretion to satisfy) all creditor claims, excluding Assumed Liabilities.

         12. Survival.  The  representations,  warranties,  and covenants on the
part of Seller and/or the Stockholder  contained in this Agreement shall survive
the  Closing  and shall be binding  upon  Seller and the  Stockholder  and their
heirs, legal representatives, successors and assigns.

         13.  Payment  of  Liabilities.  Seller  agrees  to pay as  promptly  as
possible any and all  liabilities of Seller  existing on the Closing date and to
hold Buyer harmless therefrom. Buyer and Seller agree that Buyer is not assuming
and  shall  have  no  responsibility  for  any of  the  debts,  obligations,  or
liabilities  of  Seller,  including  but  not  limited  to  any  liabilities  or
obligations of Seller  (whether fixed,  absolute,  contingent,  known,  unknown,
direct,  indirect, or otherwise) whether incurred or accrued before or after the
Closing Date, which in any way relate to the performance or non-performance  of,
or any  other  liability  or  obligation  relating  to any  service  or  product
furnished  or sold by Seller  prior to or after the  Closing  Date,  and  Seller
hereby agrees to hold Buyer harmless from any cost or expense  arising out of or
relating to any such debts, obligations, or liabilities; provided, however, such
indemnification by Seller does not extend to any Assumed Liabilities.

         14. Transfer Taxes.  Seller shall pay all sales and other similar taxes
imposed on or  collectible  by Seller or Buyer by reason of the  transfer of the
Assets.

         15. Noncompete.  For a period of three (3) years after the date of this
Agreement,  neither Seller nor the  Stockholder  shall,  directly or indirectly,
whether as a shareholder, partner or investor possessing any ownership interest,
or as principal, agent, employee, proprietor, independent contractor, consultant
or in any other capacity:

         (a)   Solicit for itself or others, or advise or recommend to any other
               person  that  such  person  solicit,  any  of  the  customers  or
               subscribers  of the Business  for the purpose of  competing  with
               Buyer or any of its members in the Business.

                                       8
                                     -149-
<PAGE>

         (b)   Offer, sell, license, lease, facilitate or promote the use of any
               products or services  presently  provided or being  developed  by
               Seller in competition  with Buyer or any of its affiliates in the
               Business  anywhere within those  territories in the United States
               of America in which  Seller was  conducting  the  Business on the
               date of this Agreement.

         (c)   Compete  with Buyer or any of its  affiliates  in the business of
               delivering  or  publishing  over the Internet  real-time  weather
               graphics, interactive flight planners or airport databases.

If any court having  jurisdiction  at any time hereafter  shall hold any of such
restrictive  covenants  to be  unenforceable  or  unreasonable  as to its scope,
territory,  or period of time,  and such court in its  judgment or decree  shall
declare or determine  the scope,  territory,  or period of time which such court
deems to be  reasonable,  then such scope,  territory or period of time,  as the
case may be, shall be deemed automatically to have been reduced to that declared
or determined to be reasonable by such court.  Notwithstanding the foregoing, if
any clause or  provision of this  paragraph  shall be  unenforceable,  then such
clause or provision shall be deemed to be deleted from this paragraph, but every
other  clause and  provision  shall  continue  in full force and  effect.  These
covenants are an integral part of the asset purchase transaction contemplated by
this  Agreement  and Buyer would not have  entered  into this  Agreement  in the
absence of such  covenants.  Seller  and the  Stockholder  acknowledge  that the
agreements  contained in this  paragraph are reasonable and necessary to protect
the Business being purchased by Buyer and that any breach thereof will result in
irreparable  injury  to Buyer for which  Buyer  has no  adequate  remedy at law.
Seller and the  Stockholder  therefore  agree that,  in the event either of them
breaches  any of the  agreements  contained  in this  paragraph,  Buyer shall be
authorized and entitled to seek from any court of competent  jurisdiction  (i) a
temporary  restraining order, (ii) preliminary and permanent  injunctive relief,
(iii) an  equitable  accounting  of all profits or benefits  arising out of such
breach, and (iv) direct,  incidental,  and consequential  damages resulting from
such breach.  Such rights or remedies shall be cumulative and in addition to all
other rights or remedies to which Buyer may be entitled.

         16. Entire Agreement. This document constitutes the entire agreement of
the parties with respect to the subject  matter  hereof and may not be modified,
amended, or terminated except by a written agreement  specifically  referring to
this Agreement and signed by all of the parties hereto.

         17. Binding  Agreement.  This Agreement shall be binding upon and inure
to the  benefit  of  the  parties  hereto  and  their  respective  heirs,  legal
representatives, successors and assigns.

         18. Further  Instruments.  The parties hereto shall execute and deliver
such additional  instruments and documents as may be reasonably requested by any
of them in order to carry out the purposes and intent of this  Agreement  and to
fulfill their respective obligations.

         19. Governing Law. This agreement shall be construed in accordance with
the laws of the State of Georgia.
                                       9
                                     -150-
<PAGE>

         20.  Severability.  In the  event  that  one or more of the  provisions
contained in this  Agreement  shall for any reason be held  invalid,  illegal or
unenforceable in any respect,  such invalidity,  illegality or  unenforceability
shall not affect any of the other provisions contained in this Agreement,  which
provisions shall remain in full force and effect.

         21.  Counterparts.  This  Agreement  may be  executed  in  one or  more
counterparts and by the different parties hereto in separate counterparts,  each
of which shall be deemed an original but all of which together shall  constitute
one and the same instrument.

         22.  Schedules and Exhibits.  All  references to Schedules and Exhibits
herein,  unless otherwise  stated,  means the schedules and exhibits attached to
this Agreement which are hereby incorporated by reference.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the day and year first above written.

                                            DATA TRANSMISSION NETWORK
                                            CORPORATION, a Delaware corporation


                                            By:/s/ Greg T. Sloma
                                               -------------------------
                                               Greg T. Sloma, President

                                            FLIGHTBRIEF ONLINE SERVICE, INC.,
                                            a Georgia corporation


                                            By:/s/ Gregg F. Lewis
                                               -----------------------------
                                               Gregg F. Lewis, President


                                       10
                                     -151-
<PAGE>


                                   SCHEDULE 1

                             List of Certain Assets

Tangible Personal Property

calm.weather.net

     VA Linux StartX-MP
     single 450 MHz PIII
     256 Meg  memory,  two 128 meg  modules
     Jaton 4mb PCI video card
     40x CD-ROM
     Keyboard and mouse
     RedHat v6, RedHat Secure Web Server

parhelion.weather.net
     Sun SparcStation 20
     50 MHZ
     128 MB RAM
     1 GB HD
     1 GB External HD
     Tape Back-up
     CD-ROM Drive
     3.5" Floppy Drive

easterlies.weather.net
     Sun SparcStation 20
     50 MHZ
     128 MB RAM
     1 GB HD
     CD-ROM Drive
     3.5" Floppy Drive

Computer Software

     In-house e-commerce credit billing software.

                                       11
                                     -152-
<PAGE>



                                   SCHEDULE 2

                         List of Seller's Subscriptions

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
schedule to the Securities and Exchange Commission upon request."


                                       12
                                     -153-
<PAGE>




                                   SCHEDULE 3

                     Allocation of Acquisition Consideration

Computer equipment.......................... $8,000.00

The noncompete agreements
of Seller and the Stockholder
referred to in Paragraph 15 of

the Asset Purchase Agreement................$20,000.00

Subscriber list,
FlightBrief Name,
Goodwill........................Final Settlement Price minus items listed above.



                                       13
                                     -154-
<PAGE>

                                    EXHIBIT A

                       GENERAL BILL OF SALE AND ASSIGNMENT

         KNOW ALL MEN BY THESE PRESENTS,  that FlightBrief Online Service, Inc.,
a Georgia  corporation  (the "Seller"),  pursuant to and in consideration of the
terms and  conditions of the Asset  Purchase  Agreement  dated November 11, 1999
(the  "Asset  Purchase  Agreement")  among  Seller,  Gregg  F.  Lewis  and  Data
Transmission  Network  Corporation,  a Delaware  corporation  ("Buyer"),  and in
consideration  of the sum of One  Dollar  ($1.00)  and other  good and  valuable
consideration,  the receipt of which is hereby acknowledged,  has sold, granted,
assigned,  conveyed,  transferred  and set over to, and by these  presents  does
sell, grant, assign, convey,  transfer and set over to Buyer, its successors and
assigns,  all of Seller's  right,  title and  interest in and to the "Assets" as
such term is  defined  in  Section 1 of the Asset  Purchase  Agreement,  and all
rights  (whether at common law or  otherwise),  claims,  and causes of action of
Seller arising out of  transactions  occurring on or prior to the date hereof in
connection  with the Assets  irrespective  of the time or date on which any such
right, claim, or cause of action may arise or accrue.

     TO HAVE AND TO HOLD,  the same  unto  Buyer,  its  successors  and  assigns
forever.

     Seller  hereby  represents  and  warrants  to  Buyer  that it has  good and
marketable  title to the Assets,  free and clear of all liens and  encumbrances,
except as otherwise disclosed in the Asset Purchase Agreement.

     Seller,  for itself and its  successors  and assigns,  covenants and agrees
with Buyer to warrant  and defend the sale of the Assets  hereby  sold to Buyer,
its  successors  and  assigns,  against  the lawful  claims  and  demands of all
persons, except as set forth in the Asset Purchase Agreement, and agrees to take
all  steps  necessary  to put  Buyer,  its  successors  and  assigns,  in actual
possession and operating control of the Assets.

     IN  WITNESS  WHEREOF,  Seller  has  caused  this  General  Bill of Sale and
Assignment to be executed as of the 11th day of November, 1999.

                       FLIGHTBRIEF ONLINE SERVICE, INC., a
                       Georgia corporation

                        By:/s/ Gregg F. Lewis
                           ----------------------------
                           Gregg F. Lewis

                        Title: President

                                       14
                                     -155-
<PAGE>




                                    EXHIBIT B

                    Form of Registrant Name Change Agreement

                  Incorporated   herein  by  this   reference  is  the  form  of
                  Registrant  Name  Change   Agreement   Version  3.0  which  is
                  currently in effect for Network Solutions, Inc.

                                       15
                                     -156-
<PAGE>


                                    EXHIBIT C

                            ASSIGNMENT OF TRADEMARKS

         THIS ASSIGNMENT is made this 11th day of November, 1999, by FLIGHTBRIEF
ONLINE SERVICE,  INC., a Georgia  corporation  ("Assignor"),  of 1987 Cobblewood
Drive,  Kennesaw,  Georgia 30152, to DATA TRANSMISSION  NETWORK  CORPORATION,  a
Delaware  corporation  ("Assignee"),  of 9110 West Dodge Road, Suite 200, Omaha,
Nebraska 68114.

                                    RECITALS:

         A. Assignor is the owner of various  trademarks and service marks,  and
registrations  and  applications  for  registration  therefor,  if any,  used in
connection with its business (collectively, the "Marks").

         B.  Assignee  is  acquiring   Assignor's  business  and  in  connection
therewith  all of Assignor's  right,  title and interest in and to the Marks and
the registrations and applications for registration therefor,  including without
limitation  the Marks listed on Exhibit A. If Assignor  has filed  intent-to-use
applications  for any of the  Marks  and has not yet  filed a  statement  of use
thereof, Assignor confirms that Assignee is the successor to the business of the
Assignor within the meaning of 15 U.S.C. 1060.

         NOW THEREFORE,  for valuable consideration,  receipt of which is hereby
acknowledged:

         Assignor hereby assigns to Assignee all of Assignor's right,  title and
interest in and to the Marks,  together with all of the goodwill of the business
in  connection  with  which the Marks  are used and which is  symbolized  by the
Marks,  all  registrations  and  applications  for  registration  of the  Marks,
including without limitation the above identified registrations and applications
for registration therefor, and the right to recover for past infringement of the
Marks.

                                              FLIGHTBRIEF ONLINE SERVICE, INC.
                                              a Georgia Corporation

                                              By: /s/ Gregg F. Lewis
                                                  -----------------------------
                                                  Gregg F. Lewis, President

                                       16
                                     -157-
<PAGE>



STATE OF ____________ )
                                 ) ss

COUNTY OF __________ )

         On this day of  _________,  1999,  before me  appeared  Gregg F. Lewis,
President  of  FlightBrief  Online  Service,  Inc., a Georgia  corporation,  the
Assignor,  who acknowledged that he signed the foregoing instrument  voluntarily
on behalf of such company.

                                                       -------------------------
                                                         Notary Public

[Notary Seal]

                                       17
                                     -158-
<PAGE>



                                    EXHIBIT A

                           TO ASSIGNMENT OF TRADEMARKS

                     BY FLIGHTBRIEF ONLINE SERVICE, INC. TO
                      DATA TRANSMISSION NETWORK CORPORATION

                             SCHEDULE OF TRADEMARKS


         "The reporting  person agrees to furnish  supplementally a copy of this
omitted schedule to the Securities and Exchange Commission upon request."


                                       18
                                     -159-



                        ASSET PURCHASE AND SALE AGREEMENT

         THIS ASSET PURCHASE AND SALE AGREEMENT  (this  "Agreement") is made and
entered  into as of the 8 day of  December,  1999,  by and between  Kavouras,
Inc.,  a Minnesota  corporation  ("Seller"),  and Radtec  Engineering,  Inc.,  a
Colorado corporation ("Buyer").

                                    RECITALS:

         A. Seller is engaged in the business (the "Business") of manufacturing,
marketing,  selling,  installing  and servicing a line of Klystron and TWT-based
Doppler  weather  radar  systems  known as the Triton  Doppler Radar Series (the
"Meteorological  Equipment")  which is  marketed  to users  including  broadcast
television, aviation, universities, governments and militaries.

         B. Seller  desires to sell certain of the fixed  assets,  inventory and
intellectual property used in the conduct of the Business,  and Buyer desires to
acquire such assets.

         In  consideration  of the mutual  covenants  and  agreements  set forth
herein,  and  for  other  good  and  valuable   consideration  the  receipt  and
sufficiency of which are hereby acknowledged,  Seller and Buyer, intending to be
legally bound, agree as follows:

         1. Purchase and Sale. Buyer agrees to purchase from Seller,  and Seller
agrees to sell to Buyer,  all right,  title and interest in and to the following
property and assets of Seller (collectively the "Assets"):

         (a)      All of Seller's  machinery  and  equipment,  supplies,  tools,
                  promotional  materials and other  tangible  personal  property
                  (other  than  inventory)  used  solely in the  conduct  of the
                  Business,  the principal items of which are listed on Schedule
                  1(a) attached hereto;

         (b)      All of  Seller's  right,  title  and  interest  in  the  SCAMP
                  software  programs and applications and related  documentation
                  (the "SCAMP  Software")  which represents all of the principal
                  items of  software  included in the  Meteorological  Equipment
                  (other  than the Storm Pro  Software  referred  to in  Section
                  13(a) and those software programs owned by third parties);

         (c)      Those   items   of   Seller's   raw    materials    inventory,
                  work-in-process  inventory,  and finished  goods  inventory of
                  Meteorological  Equipment  listed on  Schedule  1(c)  attached
                  hereto,  which  excludes  inventory  items  for the KABC  (Los
                  Angeles) and KMA (Korea) projects;

         (d)      All  right,  title  and  interest  in and  to  the  registered
                  trademark TRITON DOPPLER RADAR (the "Trademark"), but, without
                  limitation,  excluding the other  registered and  unregistered
                  trademarks of Seller  including,  but not limited to,  Triton,
                  Triton X, Triton Art Paint, Triton i7, and Triton RT;

                                       1
                                     -160-
<PAGE>

         (e)      All assignable or conveyable  rights of Seller under contracts
                  or agreements  with sales agents,  written or oral,  listed on
                  Schedule 1(e);

         (f)      All assignable or conveyable licenses,  permits,  approvals or
                  qualifications  issued or to be issued to Seller with  respect
                  to  the   Business  by  any   government   or  any  agency  or
                  instrumentality thereof, listed on Schedule 1(f);

         (g)      All of  Seller's  intellectual  information,  files,  records,
                  data,  plans,  and recorded  knowledge  related  solely to the
                  Meteorological   Equipment,   including  maintenance  manuals,
                  electronic schematics, mechanical drawings, assembly drawings,
                  test data, customer and supplier lists, and similar or related
                  data; and

         (h)      All of Seller's  goodwill  pertaining to or arising out of the
                  Business.

Without  limitation,  the Assets  shall not include (i)  Seller's  cash and cash
equivalents,  accounts receivable, notes receivable,  credits, prepaid expenses,
deferred charges,  securities,  contracts and contract rights, causes of action,
furniture,  trade  fixtures,  motor  vehicles,  and real  property and fixtures,
whether  or not  derived  from or used in  connection  with the  Business,  (ii)
Seller's assets used exclusively in its numerous other businesses other than the
Business, (iii) Seller's assets used jointly by the Business and any of Seller's
other  businesses,  except to the  extent  specifically  identified  above or in
Schedules 1 or 2 attached hereto,  (iv) any records not relating to the Business
and all corporate,  accounting and tax records relating to the Business, and (v)
refunds for taxes,  insurance premiums,  insurance policies and employee benefit
plans.

         2. Purchase Price. Buyer agrees to pay, and Seller agrees to accept, as
the entire  aggregate  purchase price for the Assets of Seller being acquired by
Buyer  pursuant  to Section  1, the sum of Eight  Hundred  Sixty  Four  Thousand
Dollars ($864,000) (hereinafter referred to as the "Purchase Price"). Sixty Four
Thousand  Dollars  ($64,000)  of the  Purchase  Price  shall be paid by Buyer to
Seller on the Closing. The balance of the Purchase Price shall be paid to Seller
by delivery to Seller at Closing of Buyer's promissory note in the form attached
hereto as  Exhibit A (the  "Promissory  Note").  The  Promissory  Note  shall be
co-signed by Dennis  Treddenick and Larry G. Davis.  The Purchase Price shall be
allocated  among the Assets as  described  in  Schedule 2. Seller and Buyer each
agree that they will not take a position  on any income tax  return,  before any
governmental  agency  charged with the  collection  of any income tax, or in any
judicial proceeding which is in any way inconsistent with such allocation.

         3. Assumption of Liabilities. Buyer shall assume, agree to perform, and
discharge  when due those  obligations of Seller with respect to the period from
and after the Closing  Date (i) to provide the warranty  services and  materials
under the customer  contracts  listed on Schedule 3(i), (ii) to supply parts and
repair services under the customer contracts listed on Schedule 3(ii), and (iii)
under  sales  agency  contracts,  written  or  oral,  listed  on  Schedule  1(e)
(collectively the "Assumed  Liabilities");  provided,  however, the provision of
such warranty services and materials under each contract  identified in Schedule
3(i) shall not begin until after the  applicable  Meteorological  Equipment  has
been installed and accepted by the customer. Buyer shall be compensated for such
warranty  services and materials as provided in Section 13(e).  Seller and Buyer
agree that, other than the Assumed  Liabilities,  Buyer does not agree to assume

                                       2
                                     -161-
<PAGE>

and  shall  have  no  responsibility  for  any  of  the  debts,  obligations  or
liabilities  of Seller (the "Excluded  Liabilities"),  all of which shall remain
the sole  responsibility  of and shall be paid and  discharged by Seller as they
become due. The  Excluded  Liabilities  include  without  limitation  all of the
following:

         (a)      Any tax liability or tax obligation of Seller,  its directors,
                  officers,  shareholders  and  agents  which has been or may be
                  asserted  by  any  taxing  authority,   other  than  any  such
                  liability or obligation  arising out of or in connection  with
                  transfer of the Assets as contemplated by this Agreement.

         (b)      Any   liability  or  obligation  of  Seller  or  any  contract
                  obligation  of Seller  (other  than the  Assumed  Liabilities)
                  whether  incurred  prior to, at or  subsequent  to the Closing
                  Date, arising out of Seller's operation of the Business.

         (c)      Any  liability or  obligation  arising out of any  litigation,
                  suit, proceeding, action, claim or investigation, at law or in
                  equity or in arbitration, related to Seller's operation of the
                  Business prior to the Closing Date.

         (d)      Any  claim,   liability  or  obligation,   known  or  unknown,
                  contingent  or  otherwise,  the existence of which is a breach
                  of, or  inconsistent  with,  any  representation,  warranty or
                  covenant of Seller set forth in this Agreement.

         (e)      Any  liability  or  obligation  specifically  stated  in  this
                  Agreement  or the  Schedules  hereto as not to be  assumed  by
                  Buyer.

         4.  Transfer and  Assumption  Documents.  Seller shall sell,  transfer,
assign, convey, and deliver to Buyer at the Closing the Assets by (i) a warranty
bill of sale and assignment in the form of Exhibit B hereto,  (ii) an Assignment
of Trademark for  submission  to the Patent and Trademark  Office in the form of
Exhibit C hereto to  transfer  the  Trademark,  and (iii)  such  other  good and
sufficient instruments of sale, assignment,  conveyance and transfer as shall be
required to effectively vest in Buyer all of Seller's right, title, and interest
in and to the  Assets,  free and  clear  of all  liens,  encumbrances,  security
interests,  actions, claims and equities of any kind whatsoever. At the Closing,
Buyer  shall  execute  and deliver to Seller  such  instruments  of  assumption,
satisfactory in form and substance to Seller,  as shall be reasonably  necessary
to  evidence  Buyer's  assumption  of the  Assumed  Liabilities.  Buyer shall be
entitled to possession of the Assets upon the Closing and Buyer shall have until
February 28, 2000 to remove the Assets from Seller's  premises.  Buyer shall, at
its expense, remove the pedestal,  antenna and radome from the tower attached to
the roof of Seller's building,  and Seller shall be responsible for the disposal
of the tower and all repair to the  building not  negligently  caused by Buyer's
removal  of the  pedestal,  antenna  and  radome.  From  time to time  after the
Closing, at Buyer's request and without further consideration,  Seller agrees to
execute and deliver such other  instruments  of conveyance and transfer and take
such other action as Buyer  reasonably  may require more  effectively to convey,
transfer  to and vest in Buyer,  and to put Buyer in  possession  of, any of the
Assets.  From time to time after the  Closing,  at Seller's  request and without
further   consideration,   Buyer  agrees  to  execute  and  deliver  such  other
instruments  of assumption  and take such other action as Seller  reasonably may
require  to  more  effectively   evidence  Buyer's  assumption  of  the  Assumed
Liabilities.

                                       3
                                     -162-
<PAGE>

         5. Closing. Subject to the termination of this Agreement as provided in
Section 10, the closing of the transactions  provided for in this Agreement (the
"Closing")  shall take place at the offices of Seller in Burnsville,  Minnesota,
at 10:00 a.m. on December 31, 1999 (the  "Closing  Date"),  or such other place,
time  and  date  as the  parties  may  agree.  Time  is of the  essence  of this
Agreement.

         6. Obligations to Employees.  Without the consent of Seller, Buyer will
not  communicate  with  Seller's  employees  of the  Business  in respect of the
transactions contemplated hereby. Seller agrees that it shall be responsible for
any  obligations  to any of its employees  which  heretofore  may have arisen or
hereafter  may arise by  reason  of any  services  rendered  by such  employees,
including  but not  limited  to  salaries,  bonuses,  vacation  pay,  retirement
benefits, and other fringe benefits; and Seller hereby agrees to pay all of such
obligations directly to the employees involved when due.

         7.   Representations   and  Warranties  of  Seller.   Seller  warrants,
represents and covenants to and with Buyer as follows:

         (a)      Seller is a corporation  duly organized,  validly existing and
                  in good  standing  under the laws of the  State of  Minnesota.
                  Seller  possesses all requisite  corporate power and authority
                  to own,  operate  and  lease its  properties  and carry on its
                  business,   and  to  execute  and  deliver,  and  perform  its
                  obligations under, this Agreement.

         (b)      The execution and delivery of this  Agreement and  performance
                  by Seller of its obligations  hereunder,  and all transactions
                  contemplated  hereby, have been duly and validly authorized by
                  all necessary  corporate action.  This Agreement has been, and
                  the other agreements and documents required to be delivered by
                  Seller in accordance with the provisions hereof (the "Seller's
                  Documents")  will be, duly executed and delivered on behalf of
                  Seller  by  duly  authorized  officers  of  Seller;  and  this
                  Agreement  constitutes,  and Seller's  Documents when executed
                  and  delivered   will   constitute,   the  valid  and  binding
                  obligations of Seller,  enforceable  in accordance  with their
                  respective  terms,  except as  enforcement  may be  limited by
                  applicable bankruptcy,  insolvency,  reorganization or similar
                  laws from time to time in effect affecting  creditor's  rights
                  generally  and  by  legal  and  equitable  limitations  on the
                  availability of specific remedies.

         (c)      Neither the execution and delivery by Seller of this Agreement
                  and the Seller's Documents,  nor the consummation by Seller of
                  the transactions  contemplated hereby and thereby,  will, with
                  or without  the giving of notice or passage of time,  or both,
                  be contrary to or violate,  breach,  or  constitute  a default
                  under,  or permit the  termination or acceleration of maturity
                  of,  or  result  in the  imposition  of  any  lien,  claim  or
                  encumbrance on any property or asset of Seller pursuant to any
                  provision of, any note,  bond,  indenture,  mortgage,  deed of

                                       4
                                     -163-
<PAGE>

                  trust,  evidence of  indebtedness  or lease  agreement,  other
                  agreement or instrument or any judgment,  order, injunction or
                  decree by which  Seller is bound,  to which Seller is a party,
                  or to which  the  assets  of Seller  are  subject;  nor is the
                  effectiveness  or  enforceability  of this  Agreement  or such
                  other  documents  adversely  affected by any  provision of the
                  certificate of incorporation or bylaws of Seller.

         (d)      Except as otherwise  set forth  herein,  no  authorization  or
                  approval  of,  or  filing  with,  any   governmental   agency,
                  authority  or other body or any other  third  persons  will be
                  required in connection with Seller's execution and delivery of
                  this Agreement and Seller's  Documents or its  consummation of
                  the transactions contemplated hereby and thereby.

         (e)      Seller  is the  sole  and  lawful  owner  of and has  good and
                  marketable  title to all of the Assets,  free and clear of any
                  liens, encumbrances,  security interests, actions, claims, and
                  equities  of any  kind  whatsoever,  except  for the  security
                  interest  granted to First National Bank of Omaha as agent for
                  a group of lenders,  which security  interest will be released
                  prior to Closing.

         (f)      That  there  are no  suits,  arbitrations  or  other  legal or
                  governmental  proceedings pending or threatened against Seller
                  which might conceivably affect the title to the Assets.

         (g)      Except for Seller's other  trademarks of or including the word
                  "Triton" and Seller's  right to continue use of such marks and
                  any new variations thereof,  to Seller's  knowledge,  no other
                  person has an  interest  in or right or license to use, or the
                  right to  license  others to use the  Trademark.  There are no
                  claims or demands of any other person  pertaining  thereto and
                  no proceedings have been instituted or, to Seller's knowledge,
                  are pending or threatened,  which challenge Seller's rights in
                  respect of the Trademark.  The Trademark is not subject to any
                  outstanding order, decree,  judgment or stipulation or, to the
                  knowledge of Seller, is being infringed by others.

         (h)      Seller has  delivered  to Buyer  true,  correct  and  complete
                  copies of all written  contracts with WPTV,  KABC,  WHO, WRDW,
                  KMA and Haikou Airport.

         (i)      Except as otherwise expressly set forth in this Agreement, the
                  Assets  shall be  conveyed  to Buyer on an  "as-is,  where-is"
                  basis without any  representations  or warranties of any kind,
                  express or implied,  either oral or written, made by Seller or
                  any agent or  representative  of Seller  with  respect  to the
                  physical or structural condition or sufficiency or adequacy of
                  the Assets.  Except as otherwise  expressly  set forth in this
                  Agreement,  Seller has made and hereby  makes no  warranty  or
                  representation  whatsoever  and hereby  disclaims  any implied
                  warranty regarding the fitness for particular purpose, quality
                  or merchantability of the Assets or any portion thereof.

                                       5
                                     -164-
<PAGE>

         8. Representations and Warranties of Buyer. Buyer warrants,  represents
and covenants to and with Seller as follows:

         (a)      Buyer is a corporation duly organized, validly existing and in
                  good standing  under the laws of the State of Colorado.  Buyer
                  possesses all requisite  corporate power and authority to own,
                  operate and lease its  properties  and carry on its  business,
                  and to execute and deliver, and perform its obligations under,
                  this Agreement.

         (b)      The execution and delivery of this  Agreement and  performance
                  by Buyer of its obligations  hereunder,  and all  transactions
                  contemplated  hereby, have been duly and validly authorized by
                  all necessary  corporate action.  This Agreement has been, and
                  the other agreements and documents required to be delivered by
                  Buyer in accordance  with the provisions  hereof (the "Buyer's
                  Documents")  will be, duly executed and delivered on behalf of
                  Buyer by duly authorized officers of Buyer; and this Agreement
                  constitutes, and Buyer's Documents when executed and delivered
                  will constitute,  the valid and binding  obligations of Buyer,
                  enforceable in accordance with their respective terms,  except
                  as  enforcement  may  be  limited  by  applicable  bankruptcy,
                  insolvency,  reorganization  or similar laws from time to time
                  in effect affecting  creditor's  rights generally and by legal
                  and  equitable  limitations  on the  availability  of specific
                  remedies.

         (c)      Neither the execution and delivery by Buyer of this  Agreement
                  and the Buyer's  Documents,  nor the  consummation by Buyer of
                  the transactions  contemplated hereby and thereby,  will, with
                  or without  the giving of notice or passage of time,  or both,
                  be contrary to or violate,  breach,  or  constitute  a default
                  under,  or permit the  termination or acceleration of maturity
                  of,  or  result  in the  imposition  of  any  lien,  claim  or
                  encumbrance  on any property or asset of Buyer pursuant to any
                  provision of, any note,  bond,  indenture,  mortgage,  deed of
                  trust,  evidence of  indebtedness  or lease  agreement,  other
                  agreement or instrument or any judgment,  order, injunction or
                  decree by which Buyer is bound,  to which Buyer is a party, or
                  to which the assets of Buyer are subject  (including,  without
                  limitation,  Buyer's contract with Baron Services,  Inc.); nor
                  is the  effectiveness or  enforceability  of this Agreement or
                  such other  documents  adversely  affected by any provision of
                  the certificate of incorporation or bylaws of Buyer.

         (d)      Except as otherwise  set forth  herein,  no  authorization  or
                  approval  of,  or  filing  with,  any   governmental   agency,
                  authority  or other body or any other  third  persons  will be
                  required in connection with Buyer's  execution and delivery of
                  this Agreement and Buyer's  Documents or its  consummation  of
                  the transactions contemplated hereby and thereby.

         (e)      Buyer has conducted or has had the  opportunity to conduct and
                  will  conduct  its own  inspection  and  investigation  of the
                  Assets and,  except as otherwise  expressly  set forth in this
                  Agreement,  is purchasing  the Assets on an "as-is,  where-is"
                  basis with no  warranties  of any kind,  express  or  implied,

                                       6
                                     -165-
<PAGE>

                  either  oral  or  written,  made by  Seller  or any  agent  or
                  representative  of Seller  with  respect  to the  physical  or
                  structural condition or sufficiency or adequacy of the Assets.

         9. Indemnification By Seller. Seller agrees to indemnify Buyer and hold
Buyer harmless from and against any and all liability, loss, litigation, expense
or claim  (including  reasonable  attorney  fees) to the extent  arising out of,
resulting from, or caused by:

         (a)      Any  breach  of  any  representation,  warranty,  covenant  or
                  agreement  made by Seller in this  Agreement  or the  Seller's
                  Documents or in connection with the transactions  contemplated
                  herein or therein;

         (b)      The ownership or operation of the Assets or the Business prior
                  to the  Closing  Date  (except to the extent  included  in the
                  Assumed Liabilities); and

         (c)      The Excluded Liabilities.

Notwithstanding any provision to the contrary contained in this Agreement, in no
event shall Seller's total cumulative liability to Buyer, if any, for all claims
of any kind resulting from Seller's breach of its representations, warranties or
covenants  contained in this  Agreement,  including  but not limited to Seller's
indemnification  obligations hereunder, or otherwise arising from or relating to
the subject matter of this Agreement, exceed the amount of the Purchase Price.

         10. Indemnification By Buyer. Buyer agrees to indemnify Seller and hold
Seller  harmless  from and  against  any and all  liability,  loss,  litigation,
expense or claim (including  reasonable attorney fees) to the extent arising out
of, resulting from, or caused by:

         (a)      Any  breach  of  any  representation,  warranty,  covenant  or
                  agreement  made by  Buyer  in this  Agreement  or the  Buyer's
                  Documents or in connection with the transactions  contemplated
                  herein or therein;

         (b)      The Assumed Liabilities; and

         (c)      Any sales,  transfer or similar tax imposed  upon the transfer
                  of the Assets to Buyer pursuant to this Agreement.

         11.  Conditions to Buyer's  Obligations at Closing.  The obligations of
Buyer  to  purchase  the  Assets   hereunder  and  consummate  the  transactions
contemplated  hereby are conditioned on the satisfaction,  unless waived, of the
following conditions at the Closing:

         (a)      The representations and warranties made by Seller in Section 7
                  shall be true and correct in all  material  respects as of the
                  Closing   Date  and  Seller   shall   execute  and  deliver  a
                  certificate to such effect to Buyer at Closing.

         (b)      Buyer shall have  determined in its sole  discretion  that the
                  Assets being transferred to Buyer hereunder are free and clear
                  of any liens, claims, encumbrances, charges and the like.

                                       7
                                     -166-
<PAGE>

         (c)      Seller  shall  have in all  material  respects  performed  and
                  complied with all of its agreements and obligations  hereunder
                  which are to be performed or complied  with prior to or on the
                  Closing Date.

         12. Conditions to Seller's  Obligations at Closing.  The obligations of
Seller to sell the Assets hereunder and consummate the transactions contemplated
hereby are  conditioned on the  satisfaction,  unless  waived,  of the following
conditions at the Closing:

         (a)      The  representations and warranties made by Buyer in Section 8
                  shall be true and correct in all  material  respects as of the
                  Closing Date and Buyer shall execute and deliver a certificate
                  to such effect to Seller at Closing.

         (b)      Buyer  shall  have  in all  material  respects  performed  and
                  complied with all of its agreements and obligations  hereunder
                  which are to be performed or complied  with prior to or on the
                  Closing Date,  and Dennis  Treddenick and Larry G. Davis shall
                  have executed the Promissory Note at Closing.

         (c)      Seller  shall  have  received  the  written  approval  of this
                  Agreement  and the  transactions  contemplated  hereby  by its
                  lenders  and the  release or  termination  by such  lenders of
                  their security interests in the Assets.

         13.      Related Agreements and Post-Closing Matters.


         (a)      At the  Closing,  Buyer and  Seller  shall  each  execute  and
                  deliver  to each  other  the  License  Agreement  in the  form
                  attached  hereto as Exhibit D,  pertaining  to the  license by
                  Seller to Buyer of the Storm Pro software.

         (b)      At the  Closing,  Buyer and  Seller  shall  each  execute  and
                  deliver to each other the  Subcontract  Agreement  in the form
                  attached hereto as Exhibit E, pertaining to the services to be
                  performed  by Buyer under  Seller's  contract  with the Supply
                  Administration of the Republic of Korea.

         (c)      For a period of two weeks  following the Closing Date,  Seller
                  shall provide at its office in Burnsville, Minnesota, informal
                  training  with  respect to the  Meteorological  Equipment  for
                  representatives  of Buyer.  Such training shall consist of one
                  week of training  regarding the Klystron Doppler weather radar
                  systems  and one  week of  training  regarding  the  TWT-based
                  Doppler weather radar systems. Such training will cover system
                  operations,   documentation   review,  test  procedures,   and
                  assembly procedures. Buyer will select its representatives for
                  training  (which  number  shall  not  exceed  10) and  will be
                  responsible  for the costs of their travel,  lodging and meals
                  while attending the training.

         (d)      For a period of fifteen (15) years following the Closing Date,
                  Buyer  agrees to provide  professional  customer  service  and
                  support for the Meteorological  Equipment sold by Seller prior
                  to the Closing Date using a skilled  staff fully  qualified to
                  perform their  respective  duties.  During such period,  Buyer
                  shall maintain an inventory of spare parts or equivalents  for
                  the Meteorological Equipment in the manner similar to which it
                  maintains an  inventory of spare parts for its existing  lines

                                       8
                                     -167-
<PAGE>

                  of  weather  radar  systems.  Buyer  agrees to charge for such
                  spare  parts the net invoice  cost of such parts plus  Buyer's
                  then current  mark-up and  international  fees, if applicable.
                  Buyer agrees to charge its then  current  labor rates for such
                  customer  service.  Promptly  after the  Closing,  Buyer shall
                  contact  each of such  customers  directly and furnish to them
                  the addresses,  phone numbers and related  information  needed
                  for such customers to contact Buyer directly for such customer
                  service.

         (e)      As set forth in Section 3, Buyer will  provide  from and after
                  the Closing Date the warranty  services  (labor and materials)
                  pursuant to the customer contracts listed on Schedule 3(i) and
                  for  the  respective  warranty  periods  set  forth  for  such
                  contracts on Schedule 3(i). At the Closing,  Buyer, Seller and
                  an escrow  agent  mutually  agreeable to Buyer and Seller (the
                  "Escrow Agent") shall execute and deliver the Escrow Agreement
                  in  the  form  attached  hereto  as  Exhibit  F  (the  "Escrow
                  Agreement").  At the Closing, Seller shall pay $185,000 to the
                  Escrow Agent  representing the contributions for the contracts
                  (other than the contract with the Supply Administration of the
                  Republic of Korea; the "Korean  Contract")  listed on Schedule
                  3(i). With respect to the Korean  Contract,  (i) if a 5650 MHz
                  system is to be  installed,  then Seller shall pay $200,000 to
                  the Escrow  Agent upon  receipt of the  payment  due to Seller
                  upon final  acceptance  of the goods under such  contract  and
                  (ii)  if a  5300  MHz  system  is to  be  installed,  then  no
                  additional  funds are to be paid to the  Escrow  Agent for the
                  Korean Contract. During the respective warranty periods, Buyer
                  shall submit  applications to Seller for  reimbursement of its
                  actual  direct  costs  incurred  in  providing  such  warranty
                  services  and  Seller  shall  authorize  the  Escrow  Agent to
                  release funds in payment of such  applications;  except in the
                  event a 5300 MHz  system is to be  installed  pursuant  to the
                  Korean  Contract,   in  which  case  Buyer  will  not  receive
                  reimbursement  for warranty  services in  connection  with the
                  Korean  Contract,  but will  instead be  compensated  entirely
                  pursuant  to the  Subcontract  Agreement  attached  hereto  as
                  Exhibit  E. With  respect  to the labor  provided  by Buyer to
                  perform such warranty services, the direct costs thereof shall
                  consist of the actual time spent by the  employees of Buyer at
                  the  standard  hourly  wages paid to such  employees by Buyer,
                  without  inclusion  of fringe  benefits  or other  indirect or
                  overhead  costs  incurred  by  Buyer.   With  respect  to  the
                  materials provided by Buyer to perform such warranty services,
                  the direct costs  thereof shall be the actual net invoice cost
                  of such  materials.  In the event the initial  contribution by
                  Seller to the  Escrow  Agent with  respect  to a  contract  as
                  specified on Schedule 3(i) is used up prior to the  expiration
                  of the applicable warranty period, Buyer and Seller shall each
                  contribute  equally to the Escrow Agent the  additional  funds
                  needed to  reimburse  Buyer for the direct  costs of providing
                  such  warranty  services.  At the end of the  warranty  period
                  applicable  to a contract as specified on Schedule  3(i),  any
                  portion of the  contributions  with  respect to such  contract
                  which  remains  with the  Escrow  Agent  shall be  distributed
                  equally to Seller and Buyer.

         (f)      For a period of up to 90 days after the  Closing  Date  Seller
                  shall, as reasonably  requested by Buyer, use its commercially
                  reasonable  efforts (without the requirement of expenditure of
                  funds) to assist Buyer in obtaining  (i) the  approvals of the
                  FCC and other governmental agencies necessary for Buyer to use
                  the licenses and permits  listed on Schedule 1(f) and (ii) the
                  consents of any third  parties  needed for the  assignment  of
                  those  contracts  and  agreements  with sales agents listed on
                  Schedule 1(e).

                                       9
                                     -168-
<PAGE>

         14.      Termination.

         (a)      Termination  by  Mutual  Consent.  At any  time  prior  to the
                  Closing,  this  Agreement may be terminated by mutual  written
                  consent of Buyer and Seller.

         (b)      Termination  by Buyer.  Buyer may terminate  this Agreement at
                  any time prior to the Closing by delivery of written notice to
                  Seller if:

                  (i) Seller has failed to perform  any of its  covenants  under
         this Agreement or has violated this Agreement in any material  respect;
         or

                  (ii) Any  representation  or  warranty  made by Seller in this
         Agreement is false or  inaccurate  in any material  respect or there is
         any material misrepresentation or material omission by Seller.

         (c)      Termination by Seller.  Seller may terminate this Agreement at
                  any time prior to the Closing by delivery of written notice to
                  Buyer if:

                  (i) Buyer has failed to  perform  any of its  covenants  under
         this Agreement of has violated this Agreement in any material  respect;
         or

                  (ii)  Any  representation  or  warranty  made by Buyer in this
         Agreement is false or  inaccurate  in any material  respect or there is
         any material misrepresentation or material omission by Buyer.

         (d)      Effect of Termination. In the event of termination as provided
                  above, this Agreement shall then become of no further force or
                  effect,   all  parties  hereto  shall  bear  their  own  costs
                  associated with this Agreement and all transactions  mentioned
                  herein,  and there shall be no obligation on the part of Buyer
                  or Seller or the officers,  directors or shareholders of Buyer
                  or Seller.

         15. Survival.  The  representations,  warranties,  and covenants on the
part of Seller and Buyer  contained in this Agreement  shall survive the Closing
and  shall  be  binding   upon   Seller  and  Buyer  and  their   heirs,   legal
representatives, successors and assigns.

         16. Transfer  Taxes.  Buyer shall pay all sales and other similar taxes
imposed on or  collectible  by Seller or Buyer by reason of the  transfer of the
Assets.

         17. Entire Agreement. This document constitutes the entire agreement of
the parties with respect to the subject  matter  hereof and may not be modified,
amended, or terminated except by a written agreement  specifically  referring to
this Agreement and signed by all of the parties hereto.

                                       10
                                     -169-
<PAGE>

         18. Binding  Agreement.  This Agreement shall be binding upon and inure
to the  benefit  of  the  parties  hereto  and  their  respective  heirs,  legal
representatives, successors and assigns.

         19. Further  Instruments.  The parties hereto shall execute and deliver
such additional  instruments and documents as may be reasonably requested by any
of them in order to carry out the purposes and intent of this  Agreement  and to
fulfill their respective obligations.

         20. Governing Law. This agreement shall be construed in accordance with
the laws of the State of Minnesota.

         21.  Severability.  In the  event  that  one or more of the  provisions
contained in this  Agreement  shall for any reason be held  invalid,  illegal or
unenforceable in any respect,  such invalidity,  illegality or  unenforceability
shall not affect any of the other provisions contained in this Agreement,  which
provisions shall remain in full force and effect.

         22.  Counterparts.  This  Agreement  may be  executed  in  one or  more
counterparts and by the different parties hereto in separate counterparts,  each
of which shall be deemed an original but all of which together shall  constitute
one and the same instrument.

         23.  Schedules and Exhibits.  All  references to Schedules and Exhibits
herein,  unless otherwise  stated,  means the schedules and exhibits attached to
this Agreement which are hereby incorporated by reference.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the day and year first above written.

                                         RADTEC ENGINEERING, INC., a
                                         Colorado corporation

                                         By:/s/ Larry G. Davis
                                            ----------------------------
                                            Larry G. Davis, President

                                         KAVOURAS, INC., a Minnesota corporation


                                         By:/s/ Laura Burrow
                                            ----------------------------
                                            Laura Burrow, Vice President

                                       11
                                     -170-
<PAGE>


                                  SCHEDULE 1(a)

                   List of Certain Tangible Personal Property


"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities & Exchange Commission upon request."

                                       12
                                     -171-
<PAGE>


                                  SCHEDULE 1(c)

                                List of Inventory

"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities & Exchange Commission upon request."

                                       13
                                     -172-
<PAGE>





                                  SCHEDULE 1(e)

                         List of Sales Agency Contracts

"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities & Exchange Commission upon request."

                                       14
                                     -173-
<PAGE>

                                  SCHEDULE 1(f)

                          List of Licenses and Permits

Type Acceptance

Non Broadcast Transmitter           MPDTDR4370A-C1
Non Broadcast Transmitter           MPDZDR4370A-C2
Non Broadcast Transmitter           MPDTDRFP70B-C1
Non Broadcast Transmitter           MPDTDR3070A-C1
Experimental XD FX                  KQ2XSX    4662-EX-R-97







                                       15
                                     -174-
<PAGE>



                                   SCHEDULE 2

                          Allocation of Purchase Price


"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities & Exchange Commission upon request."

                                       16
                                     -175-
<PAGE>



                                  SCHEDULE 3(i)

              List of Contracts for Warranty Services and Materials


"The reporting person agrees to furnish supplementally a copy of this omitted
schedule to the Securities & Exchange Commission upon request."

                                       17
                                     -176-
<PAGE>




                                 SCHEDULE 3(ii)

                    List of Contracts for Services and Parts

The following are international contracts that promise Service and Parts.

Sanya China   Repairs  after installation are required.  If repair is required
              on site, the field engineer must arrive within 20 days of request.

Barcelona, Spain      Service 24 hours per day, 7 days a week

Jindezhen and Ganzhou Airport, China
                      Service 24 hours per day, 7 days a week and free software
                      upgrades.

Beijing, China        Spares parts available for 15 years.

Haikou, China         Spares parts available for 15 years.





                                       18
                                     -177-
<PAGE>
                                    EXHIBIT A

                                 PROMISSORY NOTE

$800,000.00                                             Date: December 13, 1999
                                                        Burnsville, Minnesota


         1. Makers' Promise to Pay. For value received,  the undersigned  makers
(whether  one or more,  the  "Maker")  jointly and  severally  promise to pay to
Kavouras,  Inc. (the  "Holder")  the  principal  sum of Eight  Hundred  Thousand
Dollars  ($800,000.00),  in twenty (20) equal,  consecutive  monthly payments of
$40,000.00  commencing  on the date one  month  after  the date of this Note and
continuing  on the same day of each  month  thereafter  until  fully  paid.  All
payments  and any other  sums due under this Note shall be paid to the Holder at
its address at 11400 Rupp Drive,  Burnsville,  Minnesota 55337-1279,  or at such
other address as the Holder may from time to time designate.

         2.  Default  by Maker.  Should  default  be made in the  payment of any
installment  due under this  Note,  all sums due or not yet due under this Note,
being the sum of all unpaid  installments,  immediately shall be due and payable
in full  without  further  notice by Holder.  Following  any default  hereunder,
interest  shall accrue on the unpaid  principal  balance at the rate of eighteen
percent (18%) per annum and shall be due and payable upon demand.

         3. Note Payable in U.S.  Dollars.  Principal,  interest,  and any other
charges due under this Note are payable in lawful money of the United States.

         4. Late Charge.  Maker agrees: (a) to pay immediately,  without demand,
to the  Holder,  in the event any  installment  required  under this Note is not
received by the Holder within three (3) days after its due date, an amount equal
to one and one-half percent (1.5%) of the then unpaid principal  balance of this
Note;  (b)  that it would  be  impractical  or  extremely  difficult  to fix the
Holder's actual damages in the event that any installment shall not be paid when
due;  and (c) that such amount shall be presumed to be the amount of damages for
such late payment and is reasonable.

         5. Assumption of this Note. This Note may not be assumed or assigned by
Maker without the express  written  consent of the Holder hereof,  which consent
may be withheld in Holder's sole and absolute discretion.

         6. Maximum  Interest.  In no event whatsoever shall the amount paid, or
agreed to be paid, to the Holder for the use,  forbearance,  or retention of the
money evidenced hereby  ("Interest") exceed the maximum amount permissible under
applicable law. If the performance or fulfillment of any provision  hereof shall
result in Interest exceeding the limit for interest  prescribed by law, then the
amount of such Interest  shall be reduced to the maximum rate which may lawfully
be charged or collected by the Holder.  If, from any  circumstances  whatsoever,
the Holder  should  receive as Interest an amount which would exceed the highest

                                       19
                                     -178-
<PAGE>

lawful rate,  the amount which would be excessive  Interest  shall be applied to
the reduction of the principal balance owing hereunder (or, at the option of the
Holder, be paid over to Maker) and not to the payment of Interest.

         7.  Costs of  Collection.  Maker  promises  to pay:  (a) all  costs and
expenses of collection,  including without  limitation,  attorneys' fees, in the
event this Note or any portion of this Note is placed in the hands of  attorneys
for  collection  and such  collection is effected  without suit;  (b) attorneys'
fees, as determined  by the judge of the court,  and all other costs,  expenses,
and fees  incurred by the Holder in the event suit is instituted to collect this
Note or any portion of this Note;  (c) all costs and expenses  incurred by or on
behalf of the Holder in connection  with  collecting or otherwise  enforcing any
right of the Holder under this Note; and (d) all costs and expenses,  including,
without  limitation,  attorneys'  fees incurred by the Holder in connection with
any  bankruptcy,  insolvency,  or  reorganization  proceeding or receivership in
which the Maker is involved,  including,  without  limitation,  attorneys'  fees
incurred in making any  appearances in any such  proceeding or in seeking relief
from any stay or injunction issued in or arising out of any such proceeding.

         8. Certain Waivers. Maker waives diligence,  grace, demand, presentment
for payment,  exhibition  of this Note,  protest,  notice of protest,  notice of
dishonor,  notice of demand,  notice of  nonpayment,  and any and all  exemption
rights  against the  indebtedness  evidenced by this Note, and agrees to any and
all  extensions or renewals from time to time without  notice and to any partial
payments of this Note made before or after maturity and that no such  extension,
renewal,  or partial  payment shall release Maker from the obligation of payment
of this Note or any installment of this Note.

         9.  Governing  Law. This Note shall be construed  under and governed by
the substantive laws of the State of Minnesota.


         10.  Obligations of Persons Under this Note. In this Note, the singular
shall include the plural and this Note shall be the joint and several obligation
of each Maker.

         EXECUTED as of the date first above written.

                                             RADTEC ENGINEERING, INC.


                                             By: /s/ Larry G. Davis
                                                 --------------------------
                                                 Larry G. Davis
                                             Title: President

                                                 /s/ Dennis Treddenick
                                                 -------------------------
                                                 Dennis Treddenick

                                                 /s/ Larry G. Davis
                                                 -------------------------
                                                 Larry G. Davis

                                       20
                                     -179-
<PAGE>




                                    EXHIBIT B

                       GENERAL BILL OF SALE AND ASSIGNMENT

         KNOW  ALL MEN BY THESE  PRESENTS,  that  Kavouras,  Inc.,  a  Minnesota
corporation  (the "Seller"),  pursuant to and in  consideration of the terms and
conditions of the Asset Purchase and Sale Agreement  dated December 8, 1999 (the
"Asset  Purchase  Agreement")  among  Seller and  Radtec  Engineering,  Inc.,  a
Colorado  corporation  ("Buyer"),  and in consideration of the sum of One Dollar
($1.00)  and other  good and  valuable  consideration,  the  receipt of which is
hereby acknowledged,  has sold, granted, assigned, conveyed, transferred and set
over to, and by these presents does sell, grant,  assign,  convey,  transfer and
set over to Buyer, its successors and assigns,  all of Seller's right, title and
interest  in and to the  "Assets"  as such term is  defined  in Section 1 of the
Asset Purchase Agreement.

         TO HAVE AND TO HOLD,  the same unto Buyer,  its  successors and assigns
forever.

         Seller  hereby  represents  and  warrants to Buyer that it has good and
marketable  title to the Assets,  free and clear of all liens and  encumbrances,
except as otherwise disclosed in the Asset Purchase Agreement.

         Seller, for itself and its successors and assigns, covenants and agrees
with Buyer to warrant  and defend the sale of the Assets  hereby  sold to Buyer,
its  successors  and  assigns,  against  the lawful  claims  and  demands of all
persons, except as set forth in the Asset Purchase Agreement, and agrees to take
all  steps  necessary  to put  Buyer,  its  successors  and  assigns,  in actual
possession and operating control of the Assets.

         IN WITNESS  WHEREOF,  Seller has caused this  General  Bill of Sale and
Assignment to be executed as of the 13th day of December, 1999.

                                    KAVOURAS, INC., a
                                    Minnesota corporation

                                    By: /s/ Laura Burrow
                                        -------------------------
                                        Laura Burrow

                                    Printed Name:

                                    Title: Vice President

                                       21
                                     -180-
<PAGE>

                                    EXHIBIT C

                             ASSIGNMENT OF TRADEMARK

         THIS  ASSIGNMENT is made this 13th day of December,  1999, by KAVOURAS,
INC., a Minnesota  corporation  ("Assignor"),  of 11400 Rupp Drive,  Burnsville,
Minnesota  55337-1279,  to RADTEC  ENGINEERING,  INC.,  a  Colorado  corporation
("Assignee"), of 2150 West 6th Avenue, Bloomfield, CO 80020.

                                    RECITALS:

         A. Assignor uses the trademark "Triton Doppler Radar" and (the "Mark").

         B. Assignee is acquiring the portion of Assignor's  business pertaining
to the  manufacture,  sale,  installation  and service of a line of Klystron and
TWT-based  Doppler weather radar systems know as the Triton Doppler Radar Series
(the "Business") and in connection  therewith all of Assignor's right, title and
interest in and to the Mark and the registration thereof.

         NOW THEREFORE,  for valuable consideration,  receipt of which is hereby
acknowledged:

         Assignor hereby assigns to Assignee all of Assignor's right,  title and
interest in and to the Mark,  together  with all of the goodwill of the Business
in  connection  with which the Mark is used and which is symbolized by the Mark,
the registration of the Mark, and the right to recover for past  infringement of
the  Mark;  provided,  however,  this  Assignment  does not  include  the  other
registered  and  unregistered  trademarks  and service  marks of Assignor  which
include the word "Triton" (the "Excluded Marks"), including, without limitation,
the marks "Triton",  "Triton i7", and "Triton RT". This Assignment is subject to
the retention by Assignor of all of its rights, title and interest in and to the
Excluded Marks and the registrations and applications for registration therefor.

                                        KAVOURAS, INC., a Minnesota corporation


                                        By: /s/ Laura Burrow
                                            -------------------------------
                                            Laura Burrow, Vice President

                                       22
                                     -181-
<PAGE>



                                    EXHIBIT D

                                LICENSE AGREEMENT

         THIS LICENSE AGREEMENT (the "Agreement"),  effective as of December 13,
1999 (the  "Effective  Date"),  is by and between  KAVOURAS , INC.,  a Minnesota
corporation,  having  its  principal  place of  business  at 11400  Rupp  Drive,
Burnsville,  Minnesota 55337-1279  ("Kavouras") and RADTEC ENGINEERING,  INC., a
Colorado  corporation  having a place of business at 2150 West 6th Ave,  Unit D,
Broomfield,  CO 80020 ("Radtec").  Capitalized terms shall have the meanings set
forth in Section 3 or otherwise defined in the body of the Agreement.

         1. Scope. This Agreement  governs Radtec's  authorization to distribute
to its customers  certain  Software  Products which it licenses from Kavouras on
the terms and conditions set forth in this Agreement.

         2.  Appointment.  Kavouras  hereby  authorizes  Radtec  to  market  and
distribute  the Software  Products  solely in  connection  with Radtec's sale of
Meteorological Equipment to End Users.

         3.  Definitions.  The following  terms shall have a defined  meaning as
used in this Agreement:

                  (a) "End User"  means a licensee of  Software  Products  which
         acquires such products in connection with such  licensee's  purchase of
         Meteorological  Equipment  from  Radtec,  for its own use  rather  than
         distribution or resale.

                  (b)  "Intellectual  Property  Rights"  means all  intellectual
         property rights worldwide arising under statutory law, common law or by
         contract, and whether or not perfected,  including, without limitation,
         all (i) patents,  patent  applications  and patent rights;  (ii) rights
         associated  with works of authorship  including  copyrights,  copyright
         applications,  copyright  registrations,  mask work  rights,  mask work
         applications,  mask work  registrations;  (iii) rights  relating to the
         protection  of trade  secrets and  confidential  information;  (iv) any
         right  analogous  to those set forth in this Section 3(b) and any other
         proprietary  rights relating to intangible  property (but  specifically
         excluding trademark,  trade dress, trade name, design patent or service
         mark rights); and (v) divisions, continuations,  renewals, reissues and
         extensions  of the  foregoing  (as and to the  extent  applicable)  now
         existing, hereafter filed, issued or acquired.

                  (c) "Kavouras Marks" shall mean the Kavouras trademarks, trade
         names and logos,  including  but not  limited to the trade name  "Storm
         Pro,"  supplied by Kavouras to Radtec in the splash  screen and windows
         of the Software Products.

                  (d)   "Meteorological   Equipment"  shall  mean  Klystron  and
         TWT-based  Doppler  weather radar  systems known as the Triton  Doppler
         Radar  Series the  technology  for which was  acquired  by Radtec  from
         Kavouras  pursuant to an Asset Purchase  Agreement  between the parties
         dated December 8, 1999.

                                       23
                                     -182-
<PAGE>

                  (e) "Software Products" means the software products, in object
         code  form,  as  well  as  related  supporting   documentation   ("User
         Documentation")  marketed by Kavouras under the "Storm Pro" trade name,
         and which are provided to Radtec for  distribution  in accordance  with
         Section 4(a) of this Agreement.

                  (f) "Update" means  modifications  of releases that pertain to
         the Software Products that incorporate  corrections of minor functional
         errors and problems and also provide minor functional improvements.

         4.       Grant of Rights.

                  (a) Kavouras Marks. Subject to the conditions and restrictions
         set forth herein,  Kavouras hereby grants to Radtec a  nontransferable,
         nonexclusive  and  limited  right and  license to  reproduce,  copy and
         publicly display the Kavouras Marks on the splash screen and windows of
         the Software  Products.  Radtec may not use the Kavouras  Marks for any
         other purpose.

                  (b) Software Products Distribution License.  Subject to and in
         consideration  of the conditions and  restrictions set forth herein and
         payment to  Kavouras  of the  applicable  royalties  set forth  herein,
         Kavouras   hereby   grants  to  Radtec  a  personal,   nontransferable,
         nonexclusive  and limited right and license to reproduce and distribute
         the Software  Products to End Users in connection  with such End User's
         purchase of Meteorological  Equipment from Radtec,  including the right
         to  use  the  Software   Products  to  test  the   performance  of  the
         Meteorological  Equipment.  Radtec may distribute the Software Products
         on CD-ROM, or other standard media.

                  (c) User Documentation  Modification and Distribution License.
         Subject to and in  consideration of the conditions and restrictions set
         forth herein and payment to Kavouras of the  applicable  fees set forth
         herein,  Kavouras hereby grants to Radtec a personal,  nontransferable,
         nonexclusive   and  limited   right  and  license  to:  (i)  make  such
         modifications to the User  Documentation as are reasonably  required to
         permit customization of the User Documentation; and (ii) distribute the
         User  Documentation  to End Users in  connection  with such End  User's
         purchase of Meteorological  Equipment from Radtec.  Notwithstanding the
         foregoing,  all Kavouras  copyright and restricted rights notices shall
         be  reproduced  and  maintained  in all  Radtec  versions  of the  User
         Documentation.

                  (d) End User Agreements.  Radtec will take all steps necessary
         to protect Kavouras' proprietary rights in the Software Products and to
         ensure that each copy of the Software  Products  distributed  by Radtec
         will be accompanied by a localized copy of Radtec's  standard  software
         license  agreement  applicable  to such  software.  Such  license  will
         include  terms and  conditions  substantially  equivalent  to those set
         forth in Exhibit A to this Agreement.  The license  specified above may

                                       24
                                     -183-
<PAGE>

         be (i) a  written  agreement  signed  by the End  User;  (ii) a written
         agreement in the package  containing the Software Products that the End
         User accepts by opening the  package;  or (iii) an  electronic  license
         agreement provided that Radtec ensures that upon the initial use of the
         Software  Products,  the End User is  presented  with a copy of the End
         User  agreement and is required to  electronically  accept the terms of
         the End User  agreement  prior to accessing use of the functions of the
         Software Product.

                  (e) Enforcement.  Radtec shall use its best efforts to enforce
         any End User agreements. If an End User materially fails to fulfill any
         of its  obligations  under any such  agreement,  Kavouras may, upon its
         election and in addition to any other remedies that it may have, notify
         Radtec in writing of such breach and require  Radtec to  terminate  all
         the rights  granted,  with  respect to the Software  Products,  in such
         agreement.  Radtec shall  terminate  such rights by not more than sixty
         (60) days  notice to the End User,  if the  breach is not cured  within
         such notice period. If Radtec,  in Kavouras' sole discretion,  fails to
         perform  its  obligations  stated in this  section,  Kavouras  may,  in
         addition to any other  remedies it may have,  terminate  the  agreement
         with the End User, and/or undertake appropriate enforcement directly on
         Kavouras'  behalf.  Radtec shall pay all  reasonable  costs incurred by
         Kavouras,  including but not limited to, attorneys' fees, in connection
         with such enforcement actions undertaken by Kavouras.

                  (f) Internal Use License.  Subject to the terms and conditions
         set  forth  herein,   Kavouras   grants  to  Radtec  a   non-exclusive,
         non-transferable   license   to   reproduce   and   distribute   and/or
         electronically  distribute  within  Radtec the  Software  Products  for
         non-production, internal marketing purposes (such as internal training,
         centers of excellence, demonstrations and other non-billable/non-client
         specific  prototyping)  only.  Radtec  agrees  that it will not use the
         Software  Products for any other  internal  purpose,  including but not
         limited to (i) use for internal application development and (ii) except
         as  provided in Section  4(b),  use to test  applications  that will be
         deployed by an End User.  All copyright and  restricted  rights notices
         shall be reproduced in all Radtec internal use copies.

                  (g)  Training.   Subject  to  and  in   consideration  of  the
         conditions and restrictions set forth, Kavouras hereby grants to Radtec
         a personal, nontransferable, nonexclusive and limited right and license
         to: (i) offer and provide Kavouras' training materials to End Users and
         prospective  End  Users  of  the  Software  Products;  (ii)  make  such
         modifications  to the Kavouras  training  materials  as are  reasonably
         required  to  permit   customization  and  expansion  of  the  training
         materials,  including removing all Kavouras trademarks and trade names;
         and  (iii)  reproduce  and  distribute  the  Radtec  version(s)  of the
         training  materials to End Users and  prospective  End Users which have
         purchased  such  training  from Radtec.  Notwithstanding  the foregoing
         right to customize the training  materials,  all Kavouras copyright and
         restricted  rights  notices shall be reproduced  and  maintained in all
         Radtec versions of such materials.  A copy of the Radtec  version(s) of
         the training  materials shall be provided to Kavouras and Radtec hereby
         grants to  Kavouras  an  unlimited  right  and  license  to use,  copy,
         reproduce,  publicly  display,  publicly  perform and  distribute  such
         Radtec version(s) of the training materials.

                                       25
                                     -184-
<PAGE>

                  (h) No  Publicity.  Radtec agrees that it will not (i) publish
         findings  in the  press  of any  evaluation  of the  Software  Products
         against  competitive  products  or (ii)  publish to any third party the
         results of any  benchmark  tests or other  evaluation  of the  Software
         Products without prior written notice and pre-approval by Kavouras.

                  (i) No Other Rights.  Other than what is stated herein, and in
         the Exhibits hereto, no other license,  right or interest is granted to
         Radtec for any other purpose.

         5.       Commercial Terms.

                  (a)  Delivery.  Promptly  after the Effective  Date,  Kavouras
         shall deliver to Radtec a copy of the Software Products and any related
         User Documentation electronically,  on CD-ROM or on such other mutually
         agreeable  standard media.  Radtec  acknowledges and agrees that it has
         had an opportunity to test the Software Products prior to the Effective
         Date  and  that  the  Software   Products  and  related  Kavouras  User
         Documentation shall therefore be accepted upon delivery,  and shall not
         be subject to any rights of  rejection or  revocation  on behalf of the
         Radtec. All User Documentation  delivered under this Agreement shall be
         in the form generally provided by Kavouras. Radtec shall be responsible
         for any required  modification of the User Documentation and shall make
         such modifications in accordance with Section 4(c).

                  (b) Product  Royalties.  In  consideration of the distribution
         rights  granted to Radtec  hereunder,  Radtec  shall pay to  Kavouras a
         royalty of $10,000.00  for each copy of the Software  Products which it
         distributes; provided, however, no royalty shall be payable to Kavouras
         for the  initial  six (6)  copies of the  Software  Products  which are
         licensed  for use by End Users.  Kavouras  and Radtec  acknowledge  and
         agree that Radtec  shall be free to set the price of any license of the
         Software  Products  to End Users so long as such price is not less than
         $35,000.

                  (c) Support Pricing. In consideration of the rights granted to
         Radtec and the obligations of Kavouras  hereunder,  Radtec shall pay to
         Kavouras a support fee of $1,000 per year for each copy of the Software
         Products which are supported by Updates.

                  (d)  Updates.  The fees  specified  herein are for the current
         release of the  Software  Products  and for those  Updates  provided by
         Kavouras to Radtec for distribution to its End Users during the term of
         this  Agreement.  Kavouras  may,  at its sole  discretion,  modify  the
         Software Products. For purposes of this Agreement,  Kavouras shall have
         the sole  discretion  as to whether  and how often an Update is made to
         the  Software  Products.  During the term of this  Agreement,  Kavouras
         shall deliver to Radtec all Updates to the Software  Products  provided
         under the terms of this Agreement.  Upon receipt of any Updates, Radtec
         has  thirty  (30) days (i) to make any  required  modifications  to the
         updated  User  Documentation  in  accordance  with Section 4(c) of this
         Agreement;  (ii) to cease  distribution of the existing  version of the
         Software Products;  and (iii) to commence distribution of such Updates.
         Payment to  Kavouras  as  provided  in  Section  5(c) is  required  for
         Radtec's distribution of Updates to existing End Users.

                                       26
                                     -185-
<PAGE>

                  (e) Payment Terms.  All payments  required under Sections 5(b)
         and 5(c) shall be made on a  quarterly  basis  within  thirty (30) days
         following the end of the fiscal quarter to which they relate, and shall
         be accompanied by the records required  pursuant to Section 5(g) below.
         Within thirty (30) days following the end of the fiscal quarter, Radtec
         shall submit records pursuant to Section 5(g) below, even if no royalty
         or support payment is required.

                  (f) Taxes.  The fees listed in this Agreement are exclusive of
         all federal,  state,  municipal or other government excise, sales, use,
         occupational,  or like  taxes or duties  now in force or enacted in the
         future.  Any such tax, fee, or charge of any nature whatsoever  imposed
         by any  governmental  authority  on, or measured  by, the  transactions
         between Kavouras and Radtec  (exclusive of taxes based on Kavouras' net
         income) shall be paid by Radtec in addition to the prices invoiced. All
         payments  to  Kavouras  shall be made free and clear  of,  and  without
         reduction for, any  withholding  taxes. In the event that Kavouras pays
         any such tax, fee, or charge, at the time of sale or thereafter, Radtec
         shall promptly reimburse Kavouras therefor.

                  (g) Records.  Radtec  shall  maintain and provide to Kavouras,
         along  with any  payments  made in  accordance  with  Section  5(e),  a
         quarterly report of royalty and support payments.  The quarterly report
         shall specify,  the product name,  number of units,  total royalty due,
         total  support  payments  due and  any  additional  information  as may
         reasonably  be requested by Kavouras.  Such  quarterly  report shall be
         provided by Radtec even if no royalty or support  payments  are due. As
         part of its records,  Radtec shall maintain a listing of all Radtec End
         Users and shall  provide  such  listing  to  Kavouras,  upon  Kavouras'
         reasonable request.

                  (h) Audit Rights.  Kavouras  shall have the right to audit the
         records and  accounts of Radtec kept in  accordance  with  Section 5(g)
         above.  Any such audit shall be performed only during  Radtec's  normal
         business  hours  and  shall be  performed  in such a manner as to avoid
         unreasonable  interference with Radtec's business operations.  Kavouras
         shall bear costs and expenses associated with the exercise of its right
         to audit except that in the event of an  underpayment  of more than ten
         percent  (10%) of the amount due for the period  audited,  Radtec shall
         pay all costs  associated with such audit. In the event that any errors
         in payment  shall be  determined,  such errors  shall be  corrected  by
         appropriate  adjustment in payment  (plus  interest at the highest rate
         permitted by law) for the  quarterly  period  during which the error is
         discovered.

         6.       Radtec Obligations.

                  (a)  Indemnity.  Radtec  agrees to indemnify and hold Kavouras
         harmless  from and against all claims from  Radtec's End Users or other
         third parties arising out of any acts and/or omissions of Radtec or its
         employees or representatives.

                  (b) Fair  Representation.  Radtec shall display,  demonstrate,
         and  represent  the  Software   Products   fairly  and  shall  make  no
         representations  concerning Kavouras or the Software Products which are
         false, misleading, or inconsistent with those representations set forth

                                       27
                                     -186-
<PAGE>

         in promotional materials, literature and manuals published and supplied
         by Kavouras.

                  (c)  Notification of  Infringement.  Radtec shall  immediately
         inform  Kavouras  by  telephone,   telex  or  facsimile,  with  written
         confirmation by mail, if it becomes aware of any facts  indicating that
         any person is infringing any  Intellectual  Property Rights of Kavouras
         and its suppliers or is engaging in  unauthorized  distribution  of any
         Software Products.

                  (d) Registrations and Licenses. Radtec will obtain, at its own
         expense,   all   registrations,   licenses,   and  approvals  from  any
         authorities  and  agencies  which may be needed in order for  Radtec to
         export,  import,  market  or  sell  the  Software  Products.  Any  such
         applications  will identify the Software  Products as originating  from
         Kavouras.

                  (e)  Compliance  with  Laws.  In  exercising  its  rights  and
         performing its obligations  under this  Agreement,  Radtec shall comply
         with  all  applicable  international,  national,  and  local  laws  and
         regulations. Radtec further agrees not to violate any provisions of the
         U.S. Foreign Corrupt Practices Act of 1977 as amended,  which generally
         prohibits  the  payment of monies or  anything  of value to  government
         officials in order to obtain benefits from such government officials or
         their governments.

                  (f)  Restrictions  on Use.  Radtec agrees not to translate the
         Software Products into another computer language,  in whole or in part.
         Except as set forth in this Agreement,  Radtec shall not make copies or
         make media  translations of the Software Products,  including,  without
         limitation,  the User  Documentation,  in  whole  or in  part,  without
         Kavouras'  prior  written  approval.  Radtec  agrees  that if,  for any
         reason,  it comes  into  possession  of any  source  code,  or  portion
         thereof,  for any Kavouras product,  which source code is not generally
         provided  by  Kavouras  as a  part  of a  Software  Products,  it  will
         immediately deliver all copies of such source code to Kavouras.  Unless
         Radtec pays for an End User license,  Radtec shall not use the Software
         Products  as an End  User.  Radtec  shall  not  rent or  timeshare  the
         Software  Products or  otherwise  license or  distribute  the  Software
         Products  other than as specified in this  Agreement.  Radtec shall not
         reverse  compile,   disassemble,  or  otherwise  reverse  engineer  the
         Software  Products.  Nothing  contained  in  this  Agreement  shall  be
         interpreted so as to exclude or prejudice the rights (if any) of Radtec
         or any End User  under  the  European  Directive  91/250  on the  Legal
         Protection  of  Computer  Programs  (14 May 1991,  OJ 1991  (122/42) as
         implemented in the relevant  jurisdiction) with respect to the Software
         Products.

                  (g)  Other  Government   Agreements.   Radtec  will  take  all
         reasonable  steps in making  proposals and agreements with  governments
         other than the United  States which  involve the  Software  Products to
         ensure that  Kavouras'  proprietary  rights in such  Software  Products
         receive the maximum  protection  available  from such  governments  for
         commercial  computer  software and related  documentation  developed at
         private expense.

                  (h)  Failure  to  Comply.  Failure  to comply  with any of the
         foregoing  obligations  will  constitute  a  material  breach  of  this
         Agreement.

                                       28
                                     -187-
<PAGE>

         7. Trademarks, Logos and Product Designs. Except as provided in Section
4(a) of this  Agreement,  Radtec is  granted no right,  title or license  to, or
interest in, any Kavouras  trademarks,  trade names,  logos or product  designs.
Radtec  acknowledges  Kavouras' rights in the Kavouras Marks and agrees that any
use of the Kavouras Marks by Radtec shall inure to the sole benefit of Kavouras.
Radtec  agrees  not to:  (i)  challenge  Kavouras'  ownership  or use  of;  (ii)
register;  or (iii)  infringe any Kavouras  Marks nor shall Radtec,  without the
prior written consent of Kavouras,  incorporate any Kavouras Marks into Radtec's
trademarks,  service marks, company names, Internet addresses,  domain names, or
any other similar  designations.  If Radtec  acquires any rights in any Kavouras
Marks by operation of law or  otherwise,  it will  immediately  at no expense to
Kavouras  assign  such rights to Kavouras  along with any  associated  goodwill,
applications and/or registrations. This section does not limit in any manner the
rights of Radtec to use the trademark  "Triton  Doppler Radar" which it acquired
from Kavouras.

         8. Ownership of Intellectual  Property Rights. Radtec acknowledges that
the structure, organization and code of the Software Products are proprietary to
Kavouras or its suppliers and that  Kavouras or its suppliers  retain  exclusive
ownership  of the Software  Products.  Radtec will take  reasonable  measures to
protect  Kavouras'  Intellectual  Property  Rights  in  the  Software  Products,
including such  assistance and measures as are reasonably  requested by Kavouras
from time to time.  Except as provided  herein,  Radtec is not granted any other
Intellectual Property Rights, or any other rights,  franchises or licenses, with
respect to the Software Products.

         9. Confidential  Information.  The Software Products provided to Radtec
under  this  Agreement  shall be held in  confidence.  Radtec  may not  disclose
Kavouras'  confidential  or  proprietary  information  and may  use it only  for
purposes  specifically  contemplated  in this  Agreement.  Kavouras  will  treat
tangible  business and financial  information of Radtec that has been previously
identified  as  confidential,  with the same  degree  of care as it does its own
similar  information.  The  foregoing  obligations  do not apply to  information
which:  (i) is or becomes  known by recipient  without an obligation to maintain
its confidentiality, (ii) is or becomes generally known to the public through no
act or omission of recipient,  or (iii) is independently  developed by recipient
without use of  confidential or proprietary  information.  This section will not
affect any other confidential disclosure agreement between the parties.

         10. No Warranty. THE SOFTWARE PRODUCT(S) ARE PROVIDED "AS IS." KAVOURAS
DOES  NOT  MAKE  AND  HEREBY  DISCLAIMS  ANY  EXPRESS  OR  IMPLIED   WARRANTIES,
REPRESENTATIONS OR CONDITIONS,  INCLUDING, BUT NOT LIMITED TO, THE WARRANTIES OR
CONDITIONS   OF    MERCHANTABILITY,    FITNESS   FOR   A   PARTICULAR   PURPOSE,
NON-INFRINGEMENT  AND ANY WARRANTIES ARISING FROM A COURSE OF DEALING,  USAGE OR
TRADE PRACTICE.

         11.  Limitation  of Liability.  KAVOURAS AND ITS SUPPLIERS  WILL NOT BE
LIABLE FOR ANY LOSS OF USE,  INTERRUPTION  OF BUSINESS,  COST OF  PROCUREMENT OF
SUBSTITUTE GOODS, TECHNOLOGY OR SERVICES OR ANY INDIRECT,  SPECIAL,  INCIDENTAL,

                                       29
                                     -188-
<PAGE>

OR CONSEQUENTIAL  DAMAGES OF ANY KIND (INCLUDING LOST PROFITS) REGARDLESS OF THE
FORM OF ACTION WHETHER IN CONTRACT, TORT (INCLUDING NEGLIGENCE),  STRICT PRODUCT
LIABILITY  OR ANY OTHER LEGAL OR  EQUITABLE  THEORY  EVEN IF  KAVOURAS  HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL KAVOURAS' AGGREGATE
CUMULATIVE  LIABILITY TO RADTEC FOR ANY CLAIMS ARISING OUT OF OR RELATED TO THIS
AGREEMENT  EXCEED THE ROYALTIES PAID BY RADTEC TO KAVOURAS UNDER THIS AGREEMENT.
THE LIMITATIONS IN THIS SECTION SHALL APPLY WHETHER OR NOT THE ALLEGED BREACH OR
DEFAULT IS A BREACH OF A FUNDAMENTAL CONDITION OR TERM, OR A FUNDAMENTAL BREACH,
OR IF ANY LIMITED WARRANTY OR LIMITED REMEDY FAILS OF ITS ESSENTIAL PURPOSE.

         12.  Discontinuance of Software  Products.  If, during the term of this
Agreement,  Kavouras  discontinues one or more of the Software Products provided
to Radtec under this  Agreement,  Kavouras shall continue to provide support for
the then-current  version of such  discontinued  Software Products in accordance
with Kavouras'  obligations under this Agreement and only for the remaining term
of this Agreement.

         13.  Indemnification.  Kavouras will defend or settle at its option and
expense any legal  proceeding  brought  against Radtec or affecting its right to
use the Software Products as provided herein (including, but not limited to, the
pending lawsuit filed by Baron Services,  Inc. against Kavouras),  to the extent
that it is based on a claim  that the  Software  Products  directly  infringe  a
copyright or U.S. patent,  and will pay all damages and costs awarded by a court
of final appeal  attributable  to such claim,  provided  that Radtec:  (i) gives
written  notice of the claim  promptly to  Kavouras,  (ii) gives  Kavouras  sole
control of the defense and  settlement of the claim,  (iii) provides to Kavouras
all  available  information  and  assistance,  and (iv) has not  compromised  or
settled  such a claim.  If any  Software  Products is found to  infringe,  or in
Kavouras' opinion is likely to be found to infringe,  Kavouras may elect to: (i)
obtain for Radtec the right to use such Software Products in accordance with the
terms of this Agreement, (ii) replace or modify the Software Products so that it
becomes  non-infringing;  or if  neither  of these  alternatives  is  reasonably
available, (iii) refund to Radtec all royalties paid by Radtec for such Software
Products.  Kavouras  has no  obligation  under this  section for any claim which
results from: (i) use of the Software Products in combination with any equipment
other than Meteorological  Equipment;  (ii) Kavouras' compliance with designs or
specifications of Radtec;  (iii) modification of the Software Products;  or (iv)
use of allegedly infringing Software Products, if the alleged infringement could
be  avoided by the use of a  different  version of the  Software  Products  made
available to Radtec. THIS SECTION STATES THE SOLE AND EXCLUSIVE REMEDY OF RADTEC
AND THIRD  PARTIES AND THE ENTIRE  LIABILITY  AND  OBLIGATION  OF KAVOURAS  WITH
RESPECT TO INFRINGEMENT OR CLAIMS OF INFRINGEMENT OF ANY  INTELLECTUAL  PROPERTY
RIGHT BY THE SOFTWARE PRODUCTS OR ANY PART THEREOF.

                                       30
                                     -189-
<PAGE>



         14.      Term and Termination.

                  (a) Term. The term of this Agreement  shall commence as of the
         Effective  Date  and  shall  continue  for  ten  (10)  years  or  until
         terminated pursuant to Section 14(b) or (c) below.

                  (b) Without Cause.  This Agreement may be terminated by Radtec
         without cause, for any reason, on written notice to Kavouras.

                  (c) Termination  With Cause.  This Agreement may be terminated
         by either party (i) immediately, by notice, upon material breach by the
         other party, if such breach cannot be remedied;  (ii) by notice, if the
         other  party  fails  to  cure  any  material  remedial  breach  of this
         Agreement  within  thirty  (30) days  notice of such  breach;  or (iii)
         immediately,  by notice,  upon the second  commission  of a  previously
         remedied  material  breach.  Kavouras may also terminate this Agreement
         immediately,  by notice, in the event that Radtec makes an unauthorized
         distribution or use of the Software Products.

                  (d) Effect of Termination.  Upon any termination or expiration
         of this  Agreement,  Radtec  shall  no  longer  be  authorized  to use,
         reproduce or  distribute  the Software  Products.  Notwithstanding  the
         foregoing,  End User  licenses  already  granted by Radtec shall not be
         affected by any the termination or expiration of this Agreement.

                  (e)  Acceleration of the Payment Date. The payment date of all
         monies due to Kavouras shall  automatically be accelerated so that they
         shall become due and payable on the effective date of termination, even
         if longer terms had been provided previously.

                  (f) Surviving Terms. The provisions of Sections 3, 5(g), 5(h),
         6(a), 6(e), 7, 8, 9, 10, 11, 12, 13, 14(d),  14(e) and 15 shall survive
         the expiration or termination of this Agreement by either party for any
         reason.  All other rights and obligations under this Agreement which by
         their nature should survive, will remain in effect after termination or
         expiration hereof.

                  (g) Return of Software Products Upon Termination. Radtec shall
         certify  to  Kavouras   within  one  (1)  month  after   expiration  or
         termination  that Radtec has  destroyed or has returned to Kavouras the
         Software  Products  in all  types of media  and  computer  memory,  and
         whether or not modified or merged into other materials.

         15.      Miscellaneous.

                  (a) Export Control.  All Software  Products and technical data
         delivered  under this Agreement are subject to U.S. export control laws
         and may be subject to export or import  regulations in other countries.
         Radtec agrees to comply strictly with all such laws and regulations and
         acknowledges that it has the  responsibility to obtain such licenses to
         export,  re-export  or  import as may be  required  after  delivery  to
         Radtec.

                                       31
                                     -190-
<PAGE>

                  (b) Notices.  All written  notices  required by this Agreement
         must be delivered in person or by means evidenced by a delivery receipt
         and will be effective upon receipt.  If notice is sent to Kavouras,  it
         shall be sent to the person bearing the title set forth below Kavouras'
         signature to this Agreement.

                  (c) Force Majeure.  A party is not liable under this Agreement
         for non-performance  caused by events or conditions beyond that party's
         control,  if the  party  makes  reasonable  efforts  to  perform.  This
         provision  does not relieve  Radtec of its  obligation to make payments
         then owing.

                  (d)  Assignment.  Radtec may not assign or otherwise  transfer
         any of its rights or  obligations  under this  Agreement,  without  the
         prior written consent of Kavouras.


                  (e) Waiver. Any express waiver or failure to exercise promptly
         any right under this Agreement  will not create a continuing  waiver or
         any expectation of non-enforcement.

                  (f)  Severability.  In the event  that any  provision  of this
         Agreement shall be unenforceable or invalid under any applicable law or
         be so held by  applicable  court  decision,  such  unenforceability  or
         invalidity shall not render this Agreement unenforceable, or invalid as
         a whole,  and, in such event,  any such provision  shall be changed and
         interpreted   so  as  to  best   accomplish   the  objectives  of  such
         unenforceable or intended provision within the limits of applicable law
         or applicable court decisions.

                  (g)  Injunctive  Relief.  It is  understood  and  agreed  that
         notwithstanding  any other  provisions of this  Agreement,  a breach by
         Radtec of this  Agreement will cause  Kavouras  irreparable  damage for
         which  recovery of money  damages  would be  inadequate,  and that,  in
         addition to any and all remedies  available at law,  Kavouras  shall be
         entitled to seek timely  injunctive  relief to protect Kavouras' rights
         under this Agreement.

                  (h) Attorneys' Fees. In the event any proceeding or lawsuit is
         brought by Kavouras,  its suppliers,  or Radtec in connection with this
         Agreement, the prevailing party in such proceeding shall be entitled to
         receive its costs, expert witness fees, and reasonable  attorneys fees,
         including costs and fees on appeal.

                  (i) Controlling Law. Any action related to this Agreement will
         be governed by  Minnesota  law and  controlling  U.S.  federal  law. No
         choice of law rules of any jurisdiction  will apply. The United Nations
         Convention on the  International  Sale of Goods shall not apply to this
         Agreement.

                  (j) No Agency.  This  Agreement  is not  intended  to create a
         relationship such as a partnership, franchise, joint venture, agency or
         employment  relationship.  Neither  party  may  act in a  manner  which
         expresses  or implies a  relationship  other  than that of  independent
         contractor, nor bind the other party.

                                       32
                                     -191-
<PAGE>

                  (k) Headings. The section headings appearing in this Agreement
         are  inserted  only as a matter of  convenience  and in no way  define,
         limit,  construe or describe  the scope or extent of such section or in
         any way affect such section.

                  (l) Warranty.  Each party  warrants that it has full power and
         authority  to enter into and  perform  this  Agreement,  and the person
         signing this Agreement on such party's behalf has been duly  authorized
         and  empowered  to  enter  into  this  Agreement.  Each  party  further
         acknowledges that it has read this Agreement, understands it and agrees
         to be bound by it.

                  (m)    Counterparts.    This   Agreement   may   be   executed
         simultaneously  in two or  more  counterparts,  each of  which  will be
         considered an original,  but all of which together will  constitute one
         and the same instrument.

                  (n) Entire  Agreement.  This Agreement is the parties'  entire
         agreement  relating to its subject  matter.  It supersedes all prior or
         contemporaneous proposals,  conditions,  representations and warranties
         and prevails over any  conflicting  or  additional  terms of any quote,
         order,  acknowledgment,  or other  communication  between  the  parties
         relating to its subject  matter during the term of this  Agreement.  No
         modification  to this  Agreement  will be binding unless in writing and
         signed by an authorized representative of each party.

         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
Effective Date.

KAVOURAS, INC.:                                      RADTEC ENGINEERING, INC.:


/s/ Laura Burrow                                     /s/ Dennis Treddenick
- -------------------------                            --------------------------
Authorized Signature                                 Authorized Signature

- -------------------------                            --------------------------
Printed Name                                                  Printed Name


Vice President                                       Vice President
Title                                                Title


December 13, 1999                                    December 13, 1999
Date                                                 Date


                                       33
                                     -192-
<PAGE>



                                    Exhibit A

                      MINIMUM TERMS OF END USER AGREEMENTS

         This package may contain the following  materials  provided by Licensor
to   Licensee:    software   and   related    explanatory    written   materials
("Documentation").  The term  "Software"  shall include any  upgrades,  modified
versions, additions, and copies of the Software.

         Licensor grants to Licensee a nonexclusive  license to use the Software
and Documentation, provided that Licensee agrees to the following:

         1.  License  Grant.  Licensee  may use the Software in object code form
only and only in connection with Licensee's use of Klystron or TWT-based Doppler
weather  radar  systems  which have been  purchased by Licensee  from  Licensor.
Licensee may copy the Software only for backup purposes,  provided that Licensee
reproduce all copyright and other  proprietary  notices that are on the original
copy of the Software.

         2.  Documentation.  Licensor will deliver a master copy of the end user
documentation for the Software (the "Documentation") to Licensee. Licensee shall
have the right to use,  reproduce and distribute  internally,  the Documentation
solely in connection with Licensee's authorized use of the Software.

         3.  Restrictions.  Licensee may not use, copy,  modify, or transfer the
Software, or any copy thereof, in whole or in part, except as expressly provided
for  in  this  Agreement.  Licensee  may  not  reverse  engineer,   disassemble,
decompile,  or translate the Software, or otherwise attempt to derive the source
code of the Software, except to the extent allowed under any applicable law. Any
attempt to transfer any of the rights,  duties or obligations hereunder is void.
Licensee  may not rent,  lease,  load,  resell for  profit,  or  distribute  the
Software, or any part thereof.

         4. Ownership.  The Software is licensed,  not sold, to Licensee for use
only under the terms of this Agreement,  and Licensor and its suppliers  reserve
all rights not expressly  granted to Licensee.  Licensee owns the media, if any,
on which the  Software  or  Documentation  is  recorded,  but  Licensor  and its
suppliers  retain  ownership  of all copies of the  Software  and  Documentation
itself.

         5. Reservation of Rights.  Except as stated above,  this Agreement does
not  grant  Licensee  any  intellectual  property  rights  in  the  Software  or
Documentation.

         6. Term.  This  Agreement  will  terminate  immediately  upon notice to
Licensee  if  Licensee  materially  breaches  any  term  or  condition  of  this
Agreement. Licensee agrees upon termination to promptly destroy the Software and
all copies.

         7. Warranty Disclaimer. NEITHER LICENSOR NOR ANY OF ITS REPRESENTATIVES
OR SUPPLIERS MAKES OR PASSES ON TO LICENSEE OR OTHER THIRD PARTY ANY WARRANTY OR
REPRESENTATION ON BEHALF OF LICENSOR'S  SUPPLIERS,  INCLUDING BUT NOT LIMITED TO

                                       34
                                     -193-
<PAGE>

ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

         8.  Limitation  of  Liability.  IN NO EVENT WILL LICENSOR OR LICENSOR'S
SUPPLIERS BE LIABLE TO LICENSEE  FOR ANY  CONSEQUENTIAL,  INCIDENTAL  OR SPECIAL
DAMAGES,  INCLUDING ANY LOST PROFITS OR LOST SAVINGS,  EVEN IF LICENSOR HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY THIRD PARTY.
Some  states or  jurisdictions  do not  allow the  exclusion  or  limitation  of
incidental,  consequential or special damages,  so the above limitations may not
apply to Licensee.

         9. Notice to Government End Users. The Software is a "commercial  item"
as that term is defined at 48 C.F.R. 2.101 (OCT 1995), consisting of "commercial
computer  software" and "commercial  computer software  documentation,"  as such
terms are used in 48 C.F.R. 12.212 (SEP 1995).  Consistent with 48 C.F.R. 12.212
and 48 C.F.R.  227.7202-1 through 227.7202-4 (JUN 1995), all U.S. Government End
Users acquire the Software with only those rights set forth herein.

         10.  General.  This Agreement will be governed by the laws of the State
of Minnesota  without  regard to or  application  of  conflicts  of law rules or
principles. This Agreement will not be governed by the United Nations Convention
on Contracts for the  International  Sale of Goods,  the application of which is
expressly   excluded.   If  any  part  of  this  Agreement  is  found  void  and
unenforceable,  it will not affect the validity of the balance of the Agreement,
which shall remain valid and enforceable according to its terms. Licensee agrees
that the Software will not be shipped,  transferred or exported into any country
or used in any manner prohibited by the United States Export  Administration Act
or any other export laws,  restrictions  or  regulations.  This Agreement  shall
automatically  terminate upon failure by Licensee to comply with its terms. This
Agreement  may only be modified in writing  signed by an  authorized  officer of
Licensor and its suppliers.

         11. Third-Party Beneficiary. Licensee is hereby notified that Kavouras,
Inc.,  having its principal  place of business at 11400 Rupp Drive,  Burnsville,
Minnesota  55337-1279  ("Kavouras"),   is  a  third-party  beneficiary  to  this
agreement to the extent that this agreement contains  provisions which relate to
Licensee's  use  of  the  Software  and  Documentation   licensed  hereby.  Such
provisions are made expressly for the benefit of Kavouras and are enforceable by
Kavouras in addition to Licensor.

                                       35
                                     -194-
<PAGE>



                                    EXHIBIT E

                              SUBCONTRACT AGREEMENT

         This  Agreement  is made and  entered  into this 13th day of  December,
1999, by and between Kavouras, Inc., a Minnesota corporation, having a principal
place  of  business  at  11400  Rupp  Drive,  Burnsville,  Minnesota  55337-1279
(hereinafter   "Contractor"),   and  Radtec   Engineering,   Inc.,   a  Colorado
corporation,  having a principal place of business at 2150 West 6th Avenue, Unit
D, Bloomfield, CO 80020. (hereinafter "Subcontractor").

                                    Recitals:

         A.  Contractor has entered into a contract dated July 23, 1999 with the
Supply  Administration,  the  Republic  of Korea  ("SAROK")  for  Contractor  to
manufacture,  assemble,  deliver,  install,  test,  provide spare parts for, and
service a weather radar system for operation in Korea. Such contract, as amended
and supplemented by the bid documents and the drawings,  plans,  specifications,
statements,  certifications  and addenda to or incorporated by reference in such
contract, is hereinafter referred to as the "Contract Documents".  Copies of the
Contract  Documents are attached to this  Agreement and  incorporated  herein by
this reference.

         B.  Contractor  and SAROK are  negotiating  whether the  weather  radar
system to be installed  pursuant to the  Contract  Documents is to be a TDR 4384
5650 MHz system (the "5650 MHz System") or a TDR 4384 5300 MHz system (the "5300
MHz System").  The duties of Contractor and  Subcontractor  under this Agreement
vary  depending  on whether  the 5650 MHz System or the 5300 MHz System is to be
installed.

         C. Contractor agrees to engage Subcontractor to perform all of the work
and provide all of the materials pursuant to the Contract Documents,  other than
the Kavouras  Work and the Kavouras Work Product (as each are defined in Article
2),  and  Subcontractor  agrees  to  accept  such  engagement,  subject  to  the
provisions of this Agreement.

                                    Article 1

                              TERM AND TERMINATION

              1.1 Term.  This Agreement will become  effective on the date first
shown above and will continue in effect  through the  completion of the Work (as
described in Section 3.1 hereof),  unless earlier terminated pursuant to Section
1.2 hereof.

              1.2 Termination of Work.  Should  Subcontractor  refuse to replace
defective materials or Work, fail to perform the Work with diligence, or violate
any covenant or condition of this  Agreement or the Contract  Documents and such
failure  continues  for  thirty  (30)  days  after  written  notice  thereof  to
Subcontractor, or should Subcontractor make a general assignment for the benefit
of  creditors,  or  should a  receiver  of any of  Subcontractor's  property  be
appointed, or should a petition be filed, either by or against Subcontractor, in
any bankruptcy or insolvency  proceedings,  then  Contractor may, in addition to

                                       36
                                     -195-
<PAGE>

any other rights or remedies  Contractor  may have,  terminate  this  Agreement,
enter  Subcontractor's  premises to gain possession of the Work, and complete or
employ  any other  person or  persons  to  complete  the Work at the  expense of
Subcontractor. In the event of the termination of this Agreement, as provided in
this Section 1.2,  Subcontractor  shall prepare a statement of cost to that date
with respect to the Work, plus all obligations  incurred by Subcontractor in the
interests of the Work but not yet due.

              1.3 Survival.  In the event of any  termination of this Agreement,
Articles 4, 5 and 7 hereof shall survive and continue in effect.


                                    Article 2

                              DUTIES OF CONTRACTOR

              2.1  5650 MHz  System.  Contractor  has  partially  performed  the
Contract  Documents by  manufacturing  and  assembling a portion of the 5650 MHz
System at its office in Burnsville,  Minnesota (the "Kavouras Work Product"). If
the 5650 MHz System is to be  installed,  Contractor  will  provide the payment,
performance  and warranty  bonds and the contract  administration  by Contractor
pursuant to the Contract Documents and will furnish the Kavouras Work Product.

              2.2 5300 MHz  System.  If the 5300 MHz System is to be  installed,
Contractor  will negotiate the terms of SAROK's  letter of credit,  organize and
present  documents as required to draw on SAROK's letter of credit,  provide the
payment  and  performance  bonds (but not the  warranty  bond),  and receive the
proceeds paid by SAROK and handle the disbursements of such proceeds as provided
in this Agreement.

              2.3  Kavouras  Work.  For  purposes  of this  Agreement,  the term
"Kavouras  Work" shall mean those duties  described in Section 2.1 if a 5650 MHz
System is to be installed  and those  duties  described in Section 2.2 if a 5300
MHz System is to be installed.

                                    Article 3

                    SERVICES TO BE PERFORMED BY SUBCONTRACTOR

              3.1 Work. Subcontractor agrees to furnish all supervision,  labor,
equipment,  materials,  and  incidentals and perform all work under the Contract
Documents,  other than the Kavouras Work, in strict compliance with the Contract
Documents  (the  "Work").   Subcontractor   agrees  to  assume  all  obligations
Contractor  has  under  the  Contract  documents  as they  relate  to the  Work.
Subcontractor  further agrees to fulfill such obligations without default of any
kind or nature whatsoever and agrees to perform all of the affirmative covenants
set forth in the  Contract  Documents  applicable  to the Work  without  further
notice  of any kind or nature  from  Contractor.  If a 5650 MHz  System is to be
installed,  Contractor will provide Subcontractor with access to the premises of
Contractor for the purpose of removing the Kavouras Work Product,  which removal

                                       37
                                     -196-
<PAGE>

will be the responsibility and expense of Subcontractor. If a 5300 MHz System is
to be installed, the parties agree to amend the Contract Documents as reasonably
requested by SAROK, and Subcontractor  agrees to provide an interim radar system
as required in Section 6.1(b).

              3.2   Method  of   Performing   Services.   Consistent   with  the
requirements of the Work, Subcontractor, in conjunction with its personnel, will
determine  the means of  performing  the work to be carried out for  Contractor.
Contractor,   however,  shall  be  entitled  to  exercise  a  general  power  of
supervision and control over the results of work performed by  Subcontractor  to
ensure  satisfactory  performance.  This power of supervision  shall include the
right to inspect,  stop work, and make suggestions or  recommendations as to the
details of the work.

              3.3 Place of Work. Subcontractor's personnel will perform all work
for  Contractor  at  Subcontractor's  premises or as  provided  in the  Contract
Documents.

                                    Article 4

                                  COMPENSATION

              4.1 Compensation if 5650 MHz System.  This Section 4.1 shall apply
to this  Agreement  if and only if the 5650 MHz System is to be  installed.  For
full and complete  performance of the Work by  Subcontractor as provided in this
Agreement,  Contractor  agrees  to pay to  Subcontractor  a  portion  of the Net
Proceeds (as hereinafter  defined) as determined in accordance with this Section
4.1. The term "Net Proceeds" means the funds received by Contractor  pursuant to
the terms of the Contract Documents,  less any brokerage fees or commissions due
to third  parties  and less the amount  contributed  to the  warranty  escrow as
provided  below.  The Net Proceeds  shall first be distributed to Contractor and
Subcontractor  to  reimburse  them for  their  portion  of the  Total  Costs (as
hereinafter  defined);  provided,  however,  if the Total Costs  exceeds the Net
Proceeds,  then the Net Proceeds  shall be  distributed  between  Contractor and
Subcontractor  proportionately  based upon their respective portion of the Total
Costs.  The term  "Total  Costs"  means the sum of the actual  direct  costs and
expenses  incurred by  Subcontractor  in performing  the Work, the actual direct
costs and expenses  incurred by Contractor in performing  the Kavouras Work and,
with respect to the Kavouras Work Product,  the book value of such  inventory on
the books of Contractor as of the date of this  Agreement  (which book value was
$453,000 as of November 19, 1999); provided,  however, with respect to the labor
provided to perform the Work or Kavouras  Work,  the direct costs  thereof shall
consist of the actual time spent by the  employees at the standard  hourly wages
paid to such  employees by Contractor  or  Subcontractor,  without  inclusion of
fringe  benefits or other  indirect or overhead  costs  incurred by the employer
and,  with  respect to the  materials  provided  in the Work,  the direct  costs
thereof  shall be the actual net invoice cost of such  materials to  Contractor.
The  excess  of the  Net  Proceeds  over  the  Total  Costs  of  Contractor  and
Subcontractor,  if any,  shall be  distributed  equally  between  Contractor and
Subcontractor.  Contractor shall contribute  $200,000 of the proceeds from SAROK
pursuant  to the  Contract  Documents  to the  escrow  agent  under  the  Escrow
Agreement dated the same date as this Agreement among Contractor,  Subcontractor
and such escrow agent (the "Escrow  Agreement")  to fund the warranty work to be
performed by Subcontractor under the Contract Documents.  Subcontractor shall be
compensated  for such warranty  work in accordance  with the terms of the Escrow
Agreement and Section  13(e) of the Asset  Purchase and Sale  Agreement  between
Contractor  and  Subcontractor.  Subcontractor  shall submit  statements  of its
portion of the Total Costs to Contractor monthly.

                                       38
                                     -197-
<PAGE>

              4.2 Compensation if 5300 MHz System.  This Section 4.2 shall apply
to this  Agreement  if and only if the 5300 MHz System is to be  installed.  For
full and complete  performance of the Work by  Subcontractor as provided in this
Agreement,  Contractor  agrees to pay to Subcontractor  all of funds received by
Contractor pursuant to the terms of the Contract Documents,  less (i) the sum of
$150,000  to be  retained  by  Contractor  (the  "Contractor  Fee") and (ii) any
brokerage fees or  commissions  due to third parties with respect to the sale to
SAROK.

              4.3 Date for Payment of Compensation. If the 5650 MHz System is to
be installed,  Contractor shall  distribute the Net Proceeds between  Contractor
and  Subcontractor  as  provided  in Section 4.1 hereof from time to time within
fifteen  (15)  days  after  receipt.  Any  interim  distributions  shall be made
proportionately   based  upon  the  Total  Costs   incurred  by  Contractor  and
Subcontractor prior to the end of the calendar month preceding such distribution
and  adjusted for the prior  distributions  already  received by the  respective
parties. The parties agree to make any final adjustments to the allocations upon
the final settlement of the Total Costs when the Work is fully completed. If the
5300 MHz System is to be installed,  Contractor  shall  distribute to itself the
Contractor Fee from the first draw on SAROK's  letter of credit upon  acceptance
of the order, pay the brokerage fees and commissions from the proceeds  received
from SAROK as they become due, and remit to Subcontractor the remaining proceeds
with fifteen (15) days after receipt.

              4.4  Expenses.  Except  as  otherwise  agreed  in this  Agreement,
Subcontractor  shall be responsible  for all costs and expenses  incident to the
performance  of  services  for  Contractor,  including  all  costs  incurred  by
Subcontractor to do business.

              4.5 Sale of Kavouras Work Product. If the 5300 MHz System is to be
installed, then Subcontractor agrees to purchase from Contractor, and Contractor
agrees to sell to  Subcontractor,  the  Kavouras  Work  Product for the purchase
price of  $400,000.00  (the  "Purchase  Price")  as  provided  in this  section.
Contractor will provide  Subcontractor with access to the premises of Contractor
for the purpose of removing the Kavouras Work Product, which removal will be the
responsibility and expense of Subcontractor. Subcontractor will pay the Purchase
Price to Contractor,  without interest,  in ten (10) equal,  consecutive monthly
payments of $40,000 each commencing on the date twenty one months after the date
of this Agreement and continuing on the same day of each month  thereafter until
fully paid;  provided,  however, the entire unpaid portion of the Purchase Price
shall be paid in full upon the sale or other  conveyance  of the  Kavouras  Work
Product  by  Subcontractor.  Subcontractor  agrees  to use its  commercial  best
efforts to sell the  Kavouras  Work  Product to a customer  and agrees  that the
Kavouras  Work Product will be the first TDR 4384 5650 MHz weather  radar system
sold by  Subcontractor.  Upon  request of  Contractor,  Subcontractor  agrees to
execute and deliver a  promissory  note to  Contractor  to evidence  the payment
obligations under this section. Contractor will convey the Kavouras Work Product
to  Subcontractor  by a warranty bill of sale;  provided that  Subcontractor  is
purchasing  the  Kavouras  Work  Product on an "as-is,  where-is"  basis with no
warranties of any kind,  express or implied,  made by Contractor with respect to
the  physical or  structural  condition  or  sufficiency  of the  Kavouras  Work
Product.

                                       39
                                     -198-
<PAGE>

                                    Article 5

                     TREATMENT OF SUBCONTRACTOR'S PERSONNEL

              5.1 Compensation of Subcontractor's Personnel. Subcontractor shall
bear  sole   responsibility  for  payment  of  compensation  to  its  personnel.
Subcontractor  shall pay and report,  for all personnel assigned to Contractor's
work,  federal and state income tax  withholding,  social  security  taxes,  and
unemployment   insurance   applicable   to  such   personnel   as  employees  of
Subcontractor.  Subcontractor  shall bear sole  responsibility for any health or
disability insurance, retirement benefits, or other welfare or pension benefits,
if any, to which such personnel may be entitled. Subcontractor agrees to defend,
indemnify,  and hold  harmless  Contractor,  Contractor's  officers,  directors,
employees and agents, and the administrators of Contractor's benefit plans, from
and against any claims,  liabilities, or expenses relating to such compensation,
tax, insurance, or benefit matters;  provided that Contractor shall (1) promptly
notify  Subcontractor  of each such claim  when and as it comes to  Contractor's
attention;  (2) cooperate  with  Subcontractor  in the defense and resolution of
such  claim;  and (3) not settle or  otherwise  dispose  of such  claim  without
Subcontractor's  prior  written  consent,  such  consent not to be  unreasonably
withheld.

              5.2  Workers'  Compensation.  Notwithstanding  any other  workers'
compensation or insurance policies maintained by Contractor, Subcontractor shall
procure and  maintain  workers'  compensation  coverage  sufficient  to meet the
statutory  requirements  of every state in which  Subcontractor's  personnel are
engaged in Contractor's work.

              5.3 State and  Federal  Taxes.  As neither  Subcontractor  nor its
personnel are  Contractor's  employees,  Contractor shall not take any action or
provide Subcontractor's  personnel with any benefits or commitments inconsistent
with any of such undertakings by Subcontractor. In particular:

              o  Contractor  will  not  withhold  FICA  (Social  Security)  from
              Subcontractor's payments.

              o Contractor will not make state or federal unemployment insurance
              contributions on behalf of Subcontractor or its personnel.

              o Contractor  will not withhold  state and federal income tax from
              payment to Subcontractor.

              o Contractor will not make disability  insurance  contributions on
              behalf of Subcontractor.

              o Contractor  will not obtain workers'  compensation  insurance on
              behalf of Subcontractor or its personnel.

                                       40
                                     -199-
<PAGE>

                                    Article 6

                              TIMING; NO ASSIGNMENT

              6.1 Time is of the  Essence.  Subcontractor  acknowledges  that it
understands the terms of the Contract  Documents and agrees that those terms are
a part of this Agreement.  If the 5650 MHz System is to be installed pursuant to
the Contract  Documents,  then Subsection  6.1(a) shall apply to this Agreement;
and  if the  5300  MHz  System  is to be  installed  pursuant  to  the  Contract
Documents, then Subsection 6.1(b) shall apply to this Agreement.

              (a)  Subcontractor  agrees  to  start  the  Work  promptly  and to
              complete the Work in accordance  with the time frames provided for
              in the  Contract  Documents.  If  Contractor  incur  any  damages,
              liquidated or otherwise,  because  Subcontractor does not complete
              the Work on time,  Subcontractor  will be  obligated  to reimburse
              Contractor  for  those  damages.  Time is of the  essence  of this
              Agreement.

              (b) Subcontractor agrees to start the Work promptly and to use its
              commercially  reasonable best efforts to complete the Work as soon
              as  practicable,  including  the delivery and  installation  of an
              interim  weather  radar  system no later  than May 1,  2000.  Such
              interim system will allow SAROK to operate with  substantially all
              of the  essential  functions to be provided by the 5300 MHz System
              until  the  5300  MHz  System  is   installed.   If  despite   the
              commercially  reasonable best efforts of Subcontractor the Work is
              not completed in accordance  with the time frames  provided for in
              the Contract  Documents,  Contractor  shall be responsible for any
              damages, liquidated or otherwise, due under the Contract Documents
              as a result of the Work not being  completed  before  December 31,
              2000,  to the extent such  damages  exceed the maximum  liquidated
              damages set forth in the  Contract  Documents,  and  Subcontractor
              will  be  obligated  to  reimburse  Contractor  for  any  damages,
              liquidated  or  otherwise,  due under the Contract  Documents as a
              result  of the  Work  being  competed  after  December  31,  2000.
              Contractor  may pay the  liquidated  damages  using  the  proceeds
              received  under the Contract  Documents  or, if such proceeds have
              already  been  paid  to  Subcontractor,   Subcontractor   will  be
              obligated to reimburse  Contractor  for such  liquidated  damages.
              Time is of the essence of this Agreement.

              6.2 No  Assignment.  Subcontractor  agrees not to assign or sublet
any of the Work without the written consent of Contractor.

                                       41
                                     -200-
<PAGE>

                                    Article 7

                       OTHER OBLIGATIONS OF SUBCONTRACTOR

              7.1 Compliance with Laws.  Subcontractor agrees to comply with all
applicable  laws and regulations  relating in any way to its  performance  under
this Agreement.  Subcontractor  shall be solely  responsible for the procurement
from  governmental  agencies of all  authorizations,  licenses,  certificates or
other approvals necessary to perform its obligations pursuant to this Agreement.
Subcontractor  shall  notify  Contractor  within  ten (10)  days of any  action,
proceeding, suit, decree or order which may adversely affect the validity of any
such authorizations, licenses, certificates or other approvals.

              7.2  Indemnification.  Subcontractor  hereby  agrees  to  protect,
defend, indemnify and save Contractor, its principals, subsidiaries, affiliates,
directors,  officers, employees, agents and attorneys free and harmless from any
and all claims, actions, suits, liabilities,  costs and expenses,  including but
not limited to reasonable attorneys' fees and costs of settlement, of any nature
arising out of: (i) the breach of any  obligations of  Subcontractor  under this
Agreement or any Work; or (ii) the negligent  performance  or failure to perform
any obligation by Subcontractor,  its agents or employees,  under this Agreement
or any Work.

                                    Article 8

                               GENERAL PROVISIONS

              8.1 Notices.  Any notices to be given hereunder by either party to
the other may be  effected  either by  personal  delivery in writing or by mail,
registered or certified,  postage prepaid with return receipt requested.  Mailed
notices  shall be  addressed  to the parties at the  addresses  appearing in the
introductory paragraph of this Agreement, but each party may change such address
by  written  notice  in  accordance  with  this  paragraph.   Notices  delivered
personally will be deemed communicated as of actual receipt. Mailed notices will
be deemed communicated as of two days after mailing.

              8.2  No   Discrimination.   Subcontractor   agrees   that  in  the
performance of this Agreement it will not discriminate or permit  discrimination
against  any  person or group of persons on the  grounds  of sex,  race,  color,
religion,  or natural origin in any manner  prohibited by the laws of the United
States.

              8.3 Entire Agreement of the Parties. This Agreement supersedes any
and all  agreements,  either  oral or written,  between the parties  hereto with
respect to the  rendering  of  services  by  Subcontractor  for  Contractor  and
contains all the  covenants and  agreements  between the parties with respect to
the  rendering  of such  services in any manner  whatsoever.  Each party to this
Agreement  acknowledges  that  no  representations,  inducements,  promises,  or
agreements,  orally or otherwise,  have been made by any party, or anyone acting
on  behalf  of any  party,  that  are not  embodied  herein,  and  that no other
agreement,  statement, or promise not contained in this Agreement shall be valid
or binding.  Any  modification of this Agreement will be effective only if it is
in writing signed by the party to be charged.

                                       42
                                     -201-
<PAGE>

              8.5 Partial Invalidity. If any provision in this Agreement is held
by a court of competent jurisdiction to be invalid, void, or unenforceable,  the
remaining  provisions  will  nevertheless  continue in full force  without being
impaired or invalidated in any way.

              8.6 Parties in Interest.  This  Agreement is  enforceable  only by
Subcontractor and Contractor.  The terms of this Agreement are not a contract or
assurance regarding compensation,  continued employment,  or benefit of any kind
to any of  Subcontractor's  personnel  assigned  to  Contractor's  work,  or any
beneficiary of any such  personnel,  and no such  personnel,  or any beneficiary
thereof,  shall be a third-party  beneficiary  under or pursuant to the terms of
this Agreement.

              8.7  Governing  Law.  This  Agreement  will  be  governed  by  and
construed in accordance with the laws of the State of Minnesota.

              8.8 Successors.  This Agreement shall inure to the benefit of, and
be binding upon,  Subcontractor  and Contractor,  their successors and permitted
assigns.

              8.9  Independent  Contractor  Status.  It is the  intention of the
parties that  Subcontractor  be an  independent  contractor and not an employee,
agent, joint venturer, or partner of Contractor. Nothing in this Agreement shall
be  interpreted or construed as creating or  establishing  the  relationship  of
employer  and  employee  between  Contractor  and  either  Subcontractor  or any
employee  or agent of  Subcontractor.  Subcontractor  shall  retain the right to
perform work for others  during the terms of this  Agreement.  Contractor  shall
retain the right to cause work of the same or a different  kind to be  performed
by its own personnel or other contractors during the term of this Agreement.

Subcontractor:

Radtec Engineering, Inc.


By: /s/Dennis Treddenick
    -------------------------
    Dennis Treddenick
    Title:  Vice President

Social Security or Taxpayer

Identification Number 84-124-9773
                                       43
                                     -202-
<PAGE>

Kavouras, Inc.


By: /s/ Laura Burrow
    --------------------------
    Laura Burrow

    Title:  Vice President

                                       44
                                     -203-
<PAGE>

                                    EXHIBIT F

                                ESCROW AGREEMENT

         THIS ESCROW  AGREEMENT  ("Escrow  Agreement") is made this December 13,
1999, by and among KAVOURAS, INC., a Minnesota corporation ("Kavouras"),  RADTEC
ENGINEERING, INC., a Colorado corporation ("Radtec"), and First National Bank of
Omaha ("Escrow Agent").

         All  capitalized  terms used herein and not  otherwise  defined  herein
shall have the meanings given them, respectively, in the Asset Purchase and Sale
Agreement (the "Asset Purchase  Agreement") dated December 8, 1999, as it may be
amended, among Kavouras and Radtec.

                                    RECITALS:

         A. This  Escrow  Agreement  is  entered  into in  conjunction  with the
closing of the Asset Purchase Agreement, effective this date, and as required by
Section 13(e) of the Asset Purchase Agreement.

         B. Pursuant to Section 13(e) of the Asset Purchase Agreement,  Kavouras
has paid the sum of One Hundred  Eighty Five Thousand  Dollars  ($185,000)  (the
"Escrow  Funds") to Escrow Agent to be held and distributed by Escrow Agent upon
the terms and conditions set forth in this Escrow Agreement.

         NOW,  THEREFORE,  in consideration of the above recitals and the mutual
agreements  set forth in this  Escrow  Agreement,  the parties  hereto  agree as
follows:

                               ARTICLE I - ESCROW

         1.1 Deposit of Escrow  Funds.  Pursuant  to Section  13(e) of the Asset
Purchase  Agreement,  Kavouras has  delivered to Escrow Agent the Escrow  Funds.
Escrow Agent hereby acknowledges receipt of the Escrow Funds. Escrow Agent shall
place the Escrow Funds in a segregated account (the "Escrow Account").  Pursuant
to Section 13(e) of the Asset Purchase  Agreement,  Kavouras and Radtec may from
time to time deliver  additional funds to Escrow Agent for deposit in the Escrow
Account,  which  funds  shall be  considered  part of the  Escrow  Funds for all
purposes.  Any  earnings in respect of the Escrow  Funds shall be solely for the
account of Kavouras,  shall not be  considered a part of the Escrow  Funds,  and
shall be distributed to Kavouras from time to time at its request.

         1.2 Purpose of Escrow. The Escrow Funds are to be distributed to Radtec
from time to time as reimbursement  for warranty  services (labor and materials)
performed by Radtec  under  certain of Kavouras'  customer  contracts,  with any
remaining funds relating to a contract being distributed equally to Kavouras and
Radtec upon completion of the applicable warranty period, all in accordance with
Section 13(e) of the Asset Purchase Agreement.

                                       45
                                     -204-
<PAGE>

         1.3 Duration of Escrow. The Escrow Agent shall hold the Escrow Funds in
the Escrow  Account until  authorized or directed  hereunder to deliver all or a
portion  thereof as  provided  in  Section  1.4.  This  Escrow  Agreement  shall
terminate  when the Escrow  Agent shall have  delivered  all of the Escrow Funds
pursuant to Section 1.4.

         1.4  Application  or Release of Escrow  Funds.  The Escrow  Agent shall
deliver the Escrow Funds from time to time pursuant to Sections 1.4.1, 1.4.2 and
1.4.3.

         1.4.1  Payment of Warranty  Services.  The Escrow  Agent shall  deliver
funds from the Escrow Funds to Radtec in payment of warranty  services  rendered
by Radtec within five (5) business days after receipt of any of the following:

              (a) A statement signed by Kavouras stating that  reimbursement for
         warranty  services  rendered by Radtec  shall be paid out of the Escrow
         Funds, indicating the amount to be applied to payment of such services;
         or

              (b) An award rendered by an arbitrator, pursuant to an arbitration
         conducted in accordance  with Section  1.4.4 of this Escrow  Agreement,
         directing that  reimbursement  for warranty services rendered by Radtec
         shall be paid out of the Escrow Funds in accordance  with Section 13(e)
         of the Asset Purchase Agreement, indicating the amount to be applied to
         payment of such services; or

              (c) An order of a court of competent  jurisdiction,  which has not
         been appealed within the applicable  time period or is  non-appealable,
         directing that  reimbursement  for warranty services rendered by Radtec
         shall be paid out of the Escrow Funds in accordance  with Section 13(e)
         of the Asset Purchase Agreement, indicating the amount to be applied to
         payment of such services.

         1.4.2  Interim  Payments.  The Escrow Agent shall  deliver from time to
time  equally to  Kavouras  and Radtec  from the Escrow  Funds  within  five (5)
business days after receipt of a joint  statement  signed by Kavouras and Radtec
stating the amount to be paid to them from  excess  Escrow  Funds  relating to a
certain  contract upon completion of the warranty period in connection with such
contract in accordance with Section 13(e) of the Asset Purchase Agreement.

         1.4.3  Release  of Escrow  Funds.  Unless a dispute  has  already  been
referred to  arbitration  by written  notice  pursuant to Section  1.4.4(b),  on
December 31, 2003, the Escrow Agent shall release equally to Kavouras and Radtec
from the Escrow Funds the  remaining  amount of Escrow Funds then held by Escrow
Agent.

                                       46
                                     -205-
<PAGE>

         1.4.4 Resolution of Dispute.

              (a) Good Faith  Efforts.  It is agreed  that  Kavouras  and Radtec
         shall endeavor to reach agreement with respect to any  reimbursement to
         Radtec for  warranty  services  rendered in  accordance  with the Asset
         Purchase  Agreement  as soon as  practicable  after  Radtec  submits to
         Kavouras an application  for  reimbursement.  In  furtherance  thereof,
         Kavouras and Radtec  agree that they shall  negotiate in good faith and
         use all  reasonable  efforts to agree upon the rights of the respective
         parties with respect to payment of such warranty services.  If Kavouras
         and Radtec so agree, a statement  setting forth such agreement shall be
         furnished  to the  Escrow  Agent by  Kavouras  as  provided  in Section
         1.4.1(a).

              (b)  Submission  to  Arbitration.  If Kavouras and Radtec have not
         reached  final  agreement  upon such  claim  for  payment  of  warranty
         services,  as evidenced by Kavouras  signing and  delivering  to Escrow
         Agent a statement in  accordance  with Section  1.4.1(a)  setting forth
         such  agreement,  then such dispute shall be settled by  arbitration in
         Omaha,  Nebraska,  before a single arbitrator  pursuant to the rules of
         the American Arbitration  Association.  Arbitration may be commenced at
         any time by any party hereto giving  written notice to each other party
         to a dispute that such dispute has been referred to  arbitration  under
         this Section 1.4.4. With respect to all matters referred to arbitration
         under this Section 1.4.4,  Kavouras and Radtec shall use all reasonable
         efforts to obtain  expeditious  arbitration.  The  arbitrator  shall be
         selected by the joint agreement of Kavouras and the Radtec, but if they
         do not so agree  within  twenty  (20) days after the date of the notice
         referred to above, the selection shall be made pursuant to the rules of
         the  Association  from the  panel  of  arbitrators  maintained  by such
         Association.  Any award rendered by the arbitrator  shall be conclusive
         and binding upon the parties hereto;  provided,  however, that any such
         award  shall be  accompanied  by a written  opinion  of the  arbitrator
         giving the reasons for the award.  This provision for arbitration shall
         be  specifically  enforceable  by the parties  and the  decision of the
         arbitrator in accordance  herewith shall be final and binding and there
         shall be no right of appeal  therefrom.  Each  party  shall pay its own
         expenses of  arbitration  and the expenses of the  arbitrator  shall be
         equally  shared;  provided,  however,  that  if in the  opinion  of the
         arbitrator any claim for payment of warranty services or any defense or
         objection thereto was unreasonable,  the arbitrator may assess, as part
         of his award, all or any part of the arbitration  expenses of the other
         party  (including  reasonable  attorneys'  fees) and of the  arbitrator
         against  the  party  raising  such  unreasonable   claim,   defense  or
         objection.

                                       47
                                     -206-
<PAGE>

                     ARTICLE II - INVESTMENT OF ESCROW FUNDS

         2.1 Types of  Investments.  Subject to the conditions set forth in this
Section 2.1 and any conditions imposed by Escrow Agent,  Kavouras may direct the
investment  of the Escrow  Funds from time to time.  The Escrow  Funds  shall be
invested  in  interest   bearing   accounts  or  certificates  of  deposit  with
appropriate  maturity dates to satisfy the  anticipated  release of Escrow Funds
pursuant to this Escrow Agreement.

                           ARTICLE III - MISCELLANEOUS

         3.1 Fees and Expenses.  The Escrow Agent shall be paid at its published
rates  from  time  to time  as  compensation  for  its  services  hereunder  and
reimbursed for all expenses,  including counsel fees,  reasonably incurred by it
in connection  with the  performance  of its duties and  obligations  under this
Escrow  Agreement.  Such  compensation  shall be paid  one-half by Kavouras  and
one-half by Radtec.

         3.2 Limitation of Liability of Escrow Agent. The Escrow Agent shall not
be responsible  for the genuineness of any certificate or signature and may rely
conclusively upon and shall be protected when acting upon any notice, affidavit,
request, consent, instruction,  check or other instrument believed by it in good
faith to be genuine or to be signed or  presented  by the proper  person or duly
authorized or properly  made.  The Escrow Agent shall not be bound in any way by
any agreement  between  Kavouras and Radtec (whether or not the Escrow Agent has
knowledge thereof) and the only duties and  responsibilities of the Escrow Agent
shall be to hold the Escrow Funds received  hereunder and to deliver and release
such Escrow Funds in  accordance  with the terms of this Escrow  Agreement.  The
Escrow Agent shall not be  responsible  or liable for any act or omission on its
part in the  performance  of its duties as Escrow  Agent  under  this  Agreement
except to the  extent  such act or  omission  constitutes  bad faith or fraud or
gross negligence or willful misconduct.  The Escrow Agent may consult with legal
counsel in the event of any dispute or question as to the construction of any of
the  provisions  of this Escrow  Agreement or its duties  hereunder and it shall
incur no liability and shall be fully protected in acting in accordance with the
advice of such  counsel.  Kavouras  and  Radtec  each agree to  indemnify,  hold
harmless and defend Escrow Agent,  as to one-half each, from and against any and
all losses, claims, liabilities and reasonable expenses of its counsel, which it
may incur  hereunder  or in  connection  herewith,  except such as shall  result
solely  and  directly  from  Escrow  Agent's  own gross  negligence  or  willful
misconduct.

                                       48
                                     -207-
<PAGE>

         3.3  Successor  Escrow  Agent.  The  Escrow  Agent  may  resign  and be
discharged  from its  duties  hereunder  at any time by  giving  notice  of such
resignation to Kavouras and Radtec  specifying a date (not less than thirty (30)
days after the giving of such notice) when such  resignation  shall take effect.
Promptly  after  such  notice,  Kavouras  and  Radtec  shall  appoint a mutually
agreeable  successor escrow agent,  such successor escrow agent to become Escrow
Agent hereunder upon the resignation date specified in such notice.  If Kavouras
and Radtec are unable to agree upon a successor  escrow agent within thirty (30)
days after such  notice,  the Escrow  Agent  shall  continue  to serve until its
successor  accepts the escrow and  receives the Escrow Funds or until the Escrow
Agent deposits the Escrow Funds with a court of competent jurisdiction. Kavouras
and Radtec  may agree at any time to  substitute  a new  escrow  agent by giving
fifteen (15) days' written notice  thereof to the Escrow Agent then acting.  Any
successor  escrow agent appointed  hereunder shall be a bank or trust company or
escrow company located in Omaha, Nebraska.

         3.4 Non-Limitation of Liability. Nothing in this Escrow Agreement shall
be construed to limit the liability of the parties  hereto for any breach of the
warranties,  representations or covenants of the Asset Purchase Agreement to the
amount of the Escrow Funds or for the duration of this Escrow Agreement.

         3.5 Notices. Any notice, request, demand, waiver, consent,  approval or
other communication which is required or permitted hereunder shall be in writing
and shall be deemed given only if delivered personally or sent by telegram or by
registered mail, postage prepaid, as follows:

         (a)      If to Kavouras, to:

                           Kavouras, Inc.
                           11400 Rupp Drive
                           Burnsville, Minnesota 55337
                           Attention:  Laura Burrow

                  With a required copy to:

                           Abrahams, Kaslow & Cassman
                           8712 West Dodge Road

                           Suite 300
                           Omaha, Nebraska 68114
                           Attention:  R. Craig Fry

                                       49
                                     -208-
<PAGE>

         (b)      If Radtec, to:

                           Radtec Engineering, Inc.
                           2150 West 6th Avenue, Unit D
                           Broomfield, CO  80020
                           Larry G. Davis


         (c)      If to Escrow Agent, to:

                           First National Bank of Omaha
                           Trust Department
                           One First National Center
                           Omaha, NE  68102-1596
                           John E. Lenihan


or to such other address as the  addressee  may have  specified in a notice duly
given to the sender as provided herein. Such notice,  request,  demand,  waiver,
consent, approval or other communication will be deemed to have been given as of
the date so delivered, telegraphed or mailed.

         3.6 Binding Effect. In accordance with its terms, this Escrow Agreement
shall be binding upon and inure to the benefit of the respective  successors and
assigns of Kavouras, Radtec and the Escrow Agent.

         3.7  Governing  Law. This Escrow  Agreement  shall be  interpreted  and
enforced  in  accordance  with the laws of the  State  of  Minnesota  applicable
thereto.

         3.8 Acceptance by Escrow Agent. By its signature below, the undersigned
Escrow Agent hereby agrees to act as Escrow Agent under this Escrow Agreement.

         3.9   Counterparts.   This   Agreement   may  be  executed  in  several
counterparts, each of which will be deemed to be an original, and which together
will constitute but one and the same instrument.

         3.10  Capitalized   Terms.   Unless  otherwise   defined  herein,   all
capitalized  terms used herein shall have the meaning given to such terms in the
Asset Purchase Agreement.

         3.11 Controlling Provisions.  This Escrow Agreement may contain certain
provisions which are additional to or different from the provisions in the Asset
Purchase  Agreement.  In the event of any  perceived  conflict or silence on any
particular issue which is the subject of this Escrow  Agreement,  the provisions
of this Escrow  Agreement shall control over Section 13(e) of the Asset Purchase
Agreement.

                            [Signature page follows]


                                       50
                                     -209-
<PAGE>



         IN  WITNESS  WHEREOF,  the  parties  hereto  have  caused  this  Escrow
Agreement to be signed as of the date first above written.

                                         KAVOURAS, INC., a Minnesota corporation


                                         By:/s/ Laura Burrow
                                            ----------------------------
                                            Laura Burrow, Vice President



                                         RADTEC ENGINEERING, INC.,
                                         a Colorado corporation

                                         By: /s/Dennis Treddenick
                                             ---------------------------
                                             Dennis Treddenick, President

                                         (Escrow Agent)


                                         By: John E.Lenihan


                                       51
                                      -210-

                                 AMENDMENT TO

                        ASSET PURCHASE AND SALE AGREEMENT

         This AMENDMENT TO ASSET PURCHASE AND SALE  AGREEMENT  ("Amendment")  is
dated as of December 13, 1999 (the "Effective Date"), and is entered into by and
between  Kavouras,   Inc.,  a  Minnesota  corporation  ("Seller"),   and  Radtec
Engineering, Inc., a Colorado corporation ("Buyer").

                                    RECITALS:

         A. Buyer and Seller all of the present  parties to that  certain  Asset
Purchase and Sale Agreement dated December 8, 1999 (the "Agreement").

         B.  Buyer and  Seller  desire  to amend and  modify  the  Agreement  as
specifically  set forth in this  Amendment  to complete  the  allocation  of the
purchase  price under the  Agreement  and to recognize  that the  Trademark  (as
defined in the Agreement) has not been registered by Seller.

         NOW, THEREFORE, in consideration of the Recitals which are incorporated
into and made a part of this  Amendment and the mutual  covenants and agreements
set forth therein and herein, the parties hereto agree as follows:

         1.  Amendments  to Agreement.  (a) From and after the  Effective  Date,
Schedule 2 of the  Agreement  is deleted in its entirety and Schedule 2 attached
to this Amendment is inserted in its place.

         (b) From and after the Effective  Date,  the word  "registered"  in the
first sentence of Section 1(d) of the Agreement is deleted.

         (c) From and after the Effective  Date, the first sentence of Section 4
of the Agreement is deleted in its entirety and the following is inserted in its
place:

         "Seller shall sell, transfer,  assign,  convey, and deliver to Buyer at
         the Closing the Assets by (i) a warranty bill of sale and assignment in
         the form of Exhibit B hereto,  (ii) an  Assignment  of Trademark in the
         form of  Exhibit C hereto to  transfer  the  Trademark,  and (iii) such
         other good and sufficient instruments of sale,  assignment,  conveyance
         and transfer as shall be required to  effectively  vest in Buyer all of
         Seller's  right,  title,  and  interest in and to the Assets,  free and
         clear of all liens, encumbrances,  security interests,  actions, claims
         and equities of any kind whatsoever."

         (d) From and after the  Effective  Date,  Exhibit C of the Agreement is
deleted in its entirety and Exhibit C attached to this  Amendment is inserted in
its place.

                                       1
                                     -211-
<PAGE>

         2. Binding  Effect.  This Amendment  shall be binding upon and inure to
the benefit of Buyer and Seller and their  respective  successors  and permitted
assigns.

         3.  Superseding.  From and after the Effective  Date, all references to
the Agreement shall mean the Agreement, as amended by this Amendment.

         4.  Confirmation.  Except  as  otherwise  expressly  set  forth in this
Amendment,  the  Agreement is hereby  ratified and confirmed and remains in full
force and effect.

         5.  Counterparts.  This  Amendment  may be  executed  in any  number of
counterparts,  all of which taken  together  shall  constitute  one and the same
instrument  and any of the parties  hereto may execute this Amendment by signing
any such counterpart.

         IN WITNESS WHEREOF,  the parties have executed this Amendment as of the
date and year first above written.

                                Kavouras, Inc., a Minnesota corporation

                                By:/s/ Laura Burrow
                                   -------------------------------
                                    Laura Burrow, Vice President



                                Radtec Engineering, Inc., a Colorado corporation

                                By: /s/ Dennis Treddenick
                                    ---------------------------------
                                    Dennis Treddenick, Vice President


                                       2
                                     -212-
<PAGE>



                                   SCHEDULE 2

                          Allocation of Purchase Price


"The reporting  person agrees to furnish  supplementally  a copy of this omitted
schedule to the Securities and Exchange Commission upon request."

                                       3
                                     -213-
<PAGE>

                                    EXHIBIT C

                             ASSIGNMENT OF TRADEMARK

         THIS  ASSIGNMENT is made this 13th day of December,  1999, by KAVOURAS,
INC., a Minnesota  corporation  ("Assignor"),  of 11400 Rupp Drive,  Burnsville,
Minnesota  55337-1279,  to RADTEC  ENGINEERING,  INC.,  a  Colorado  corporation
("Assignee"), of 2150 West 6th Avenue, Broomfield, Colorado 80020.

                                    RECITALS:

         A. Assignor uses the trademark "Triton Doppler Radar" (the "Mark").

         B. Assignee is acquiring the portion of Assignor's  business pertaining
to the  manufacture,  sale,  installation  and service of a line of Klystron and
TWT-based  Doppler weather radar systems know as the Triton Doppler Radar Series
(the "Business") and in connection  therewith all of Assignor's right, title and
interest in and to the Mark.

         NOW THEREFORE,  for valuable consideration,  receipt of which is hereby
acknowledged:

         Assignor hereby assigns to Assignee all of Assignor's right,  title and
interest in and to the Mark,  together  with all of the goodwill of the Business
in  connection  with which the Mark is used and which is symbolized by the Mark,
and the right to recover for past infringement of the Mark;  provided,  however,
this  Assignment  does  not  include  the  other   registered  and  unregistered
trademarks  and service  marks of Assignor  which include the word "Triton" (the
"Excluded Marks"),  including,  without limitation,  the marks "Triton", "Triton
X", "Triton Art Paint", "Triton i7", and "Triton RT". This Assignment is subject
to the retention by Assignor of all of its rights,  title and interest in and to
the Excluded  Marks and the  registrations  and  applications  for  registration
therefor.

                                         KAVOURAS, INC., a Minnesota corporation


                                         By: /s/ Laura Burrow
                                             ----------------------------
                                             Laura Burrow, Vice President

                                        4
                                     -214-






                   SERIES A PREFERRED STOCK PURCHASE AGREEMENT

                                   Dated as of

                                December 16, 1999










                                      1
                                     -215-
<PAGE>

                                TABLE OF CONTENTS

1.       Purchase and Sale of Stock............................................1
         1.1.     Sale and Issuance of Series A Preferred Stock................1
         1.2.     Closing......................................................1
         1.3.     Delivery.....................................................1
2.       Representations and Warranties of the Company.........................2
         2.1.     Organization, Good Standing and Qualification................2
         2.2.     Capitalization...............................................2
         2.3.     Subsidiaries.................................................3
         2.4.     Liabilities..................................................3
         2.5.     Authorization................................................3
         2.6.     Valid Issuance of Preferred and Common Stock.................3
         2.7.     Governmental Consents........................................4
         2.8.     Litigation...................................................4
         2.9.     Compliance with Other Instruments............................4
         2.10.    Brokers or Finders...........................................5
3.       Representations and Warranties of the Investors.......................5
         3.1.     Experience...................................................5
         3.2.     Purchase Entirely for Own Account............................5
         3.3.     Rule 144.....................................................6
         3.4.     No Public Market.............................................6
         3.5.     Access to Data...............................................6
         3.6.     Authorization................................................6
         3.7.     Principal Address............................................7
4.       Conditions of the Investors' Obligations at Closing...................7
         4.1.     Representations and Warranties...............................7
         4.2.     Performance..................................................7
         4.3.     Compliance Certificate.......................................7
         4.4.     Absence of Litigation........................................7
         4.5.     Blue Sky.....................................................7
         4.6.     Opinion of Company Counsel...................................8
         4.7.     Supporting Documents.........................................8
         4.8.     Other Agreements.............................................8
         4.9.     Restated Certificate.........................................8
         4.10.    Stock Incentive Plan.........................................8
5.       Conditions of the Company's Obligations at the Closing................8
         5.1.     Representations and Warranties...............................8
         5.2.     Performance..................................................9
         5.3.     Compliance Certificate.......................................9
         5.4.     Blue Sky.....................................................9
         5.5.     Other Agreements.............................................9
         5.6.     Absence of Litigation........................................9
         5.7.     Restated Certificate.........................................9
         5.8.     Stock Incentive Plan.........................................9

                                       2
                                     -216-
<PAGE>

6.       Participation Rights.................................................10
7.       Miscellaneous........................................................10
         7.1.     Governing Law...............................................10
         7.2.     Survival....................................................11
         7.3.     Successors and Assigns......................................11
         7.4.     Entire Agreement; Amendment.................................11
         7.5.     Notices, Etc................................................11
         7.6.     Delays or Omissions.........................................11
         7.7.     California Corporate Securities Law.........................12
         7.8.     Expenses....................................................12
         7.9.     Counterparts................................................12
         7.10.    Severability................................................12
         7.11.    Dispute Resolution..........................................12


Exhibits:
- --------

Exhibit A         List of Investors
Exhibit B         License Agreement
Exhibit C         Amended and Restated Certificate of Incorporation
Exhibit D         Form of Opinion of Company Counsel
Exhibit E         Stockholders Agreement
Exhibit F         Common Stock Purchase Agreement
Exhibit G         Warrants
Exhibit H         1999 Stock Incentive Plan
Exhibit I         Form of DTN Promissory Note
Exhibit J         Form of Opinion of DTN Counsel


                                       3
                                     -217-
<PAGE>

         This Series A Preferred Stock Purchase  Agreement (this "Agreement") is
made as of December  16, 1999 (the  "Effective  Date"),  by and among  EarthScan
Network Inc., a Delaware corporation (the "Company"), with its principal offices
located  at 6565  Americas  Parkway,  Albuquerque,  New  Mexico,  87110  and the
Investors  listed on Exhibit A attached  hereto,  each of which is  referred  to
herein as an "Investor" and all of which are collectively  referred to herein as
the "Investors."

         THE PARTIES HEREBY AGREE AS FOLLOWS:

         1. Purchase and Sale of Stock.

            1.1. Sale and Issuance of Series A Preferred  Stock.  Subject to the
terms and conditions of this Agreement, each Investor agrees to purchase and the
Company  agrees to sell and issue to each  Investor  on the Closing  Date,  that
number of shares of Series A Preferred  Stock set forth opposite such Investor's
name on Exhibit A hereto,  with a fair market  value as of the  Closing  Date of
$100.00 (One Hundred  Dollars) per share. The shares of Series A Preferred Stock
to be sold to the Investors pursuant to this Agreement are collectively referred
to herein as the "Shares." In exchange for its Shares, Data Transmission Network
Corporation  ("DTN")  will pay to the  Company in cash the  aggregate  amount of
$500,000  (Five Hundred  Thousand U.S.  Dollars) and will execute and deliver to
the Company the promissory  note with an initial  outstanding  principal  amount
equal to $2,500,000 (Two Million Five Hundred Thousand U.S. Dollars) in the form
attached  hereto as  Exhibit I (the  "Promissory  Note").  In  exchange  for its
Shares,  Photon Research Associates,  Inc. ("PRA") will grant to the Company the
exclusive  licenses  and  other  rights as set  forth in the  License  Agreement
attached hereto as Exhibit B (the "License Agreement"). The Shares will have the
powers,  rights,  preferences,  privileges  and  restrictions  set  forth in the
Amended and Restated  Certificate of Incorporation,  in the form attached hereto
as Exhibit C (the "Restated Certificate").

            1.2.  Closing.  The closing of the  purchase  and sale of the Shares
hereunder (the  "Closing")  shall take place at the offices of Latham & Watkins,
701 "B" Street, San Diego, California, at 10:00 a.m. on December 28, 1999, or at
such other time and place as the Company and the Investors  mutually  agree (the
"Closing Date").

            1.3. Delivery. On the Closing Date, the Company will deliver to each
Investor a  certificate  or  certificates  registered  in such  Investor's  name
representing  the Shares  purchased by the  Investor,  as set forth on Exhibit A
hereto, against (i) payment by DTN to the Company, by check or wire transfer, of
the cash  portion  of the  purchase  price  for its  Shares,  together  with the
execution and delivery of the Promissory Note,  representing  payment in full of
the purchase price for its Shares and (ii) execution and delivery of the License
Agreement by PRA,  representing  payment in full of the  purchase  price for its
Shares.  In addition to the  foregoing,  each party will  deliver at the Closing
such  other  agreements,  instruments,  documents  and  certificates  which  are
referred to in Sections 4 and 5 hereof.  Immediately  following the Closing, the
issuance of Shares will be recorded in the Company's share register.


                                       4
                                     -218-
<PAGE>

         2. Representations and Warranties of the Company. Except as affected by
the transactions contemplated hereby, the Company hereby represents and warrants
to the Investors as of the date hereof and as of the Closing as follows:

            2.1. Organization, Good Standing and Qualification. The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware and has all requisite  corporate power and authority to
own its properties and carry on its business as currently conducted and as it is
currently planned to be conducted.  The Company is duly qualified to do business
as a  foreign  corporation  in each  state in which the  failure  to do so could
reasonably be expected to result in a material adverse effect on the Company.

            2.2. Capitalization.  As of the date hereof and immediately prior to
the  issuance  of the Shares (i) the  authorized  capital  stock of the  Company
consists of 200,000  shares of Common  Stock,  and 100,000  shares of  Preferred
Stock,  of which 60,000 are designated  Series A Preferred  Stock (the "Series A
Stock") and 40,000 remain undesignated; and (ii) the Company has reserved 60,000
shares of Common Stock for issuance upon conversion of the Shares,  9,000 shares
of Common Stock for issuance to key  employees  pursuant to the  Company's  1999
Stock Incentive  Plan,  4,000 shares of Common Stock for issuance to certain key
employees,  consultants and officers of the Company pursuant to the Common Stock
Purchase Agreement executed  concurrently  herewith,  and 1,500 shares of Common
Stock for issuance upon exercise of certain  Warrants  (defined below) issued to
the Company's financial advisor concurrently herewith. Except as contemplated by
this  Agreement,   the  Stockholders  Agreement  (defined  below),  the  License
Agreement  and the Warrants,  there are no other  outstanding  rights,  options,
warrants,  preemptive rights,  rights of first refusal or similar rights for the
purchase or  acquisition  from the Company (or any of its  subsidiaries)  of any
securities  of the  Company  (or  any of its  subsidiaries)  nor are  there  any
commitments to issue or execute any such rights, options,  warrants,  preemptive
rights or rights of first refusal. Neither the offer nor the issuance or sale of
the Shares  constitutes  an event,  under any  anti-dilution  provisions  of any
securities  issued or issuable by the Company or any agreements  with respect to
the issuance of securities by the Company, which will either increase the number
of shares issuable pursuant to such provisions or decrease the consideration per
share to be  received  by the Company  pursuant  to such  provisions.  Except as
provided in this Agreement, no holder of any security of the Company is entitled
to any  preemptive or similar  rights to purchase any  securities of the Company
from the Company.

            2.3. Subsidiaries.  The Company does not own or control, directly or
indirectly,  any interest in any other  corporation,  limited liability company,
trust, association or other business entity. The Company is not a participant in
any joint venture, partnership or similar arrangement.

            2.4.  Liabilities.  The  Company  has  no  material  liabilities  or
obligations,  absolute or contingent except liabilities and obligations that (i)
were  incurred  in the  ordinary  course  of  business  or (ii) are set forth on
Schedule 2.4 attached hereto.

                                       5
                                     -219-
<PAGE>

            2.5. Authorization. All corporate action on the part of the Company,
its  officers,  directors  and  stockholders  necessary  for the  authorization,
execution  and delivery of this  Agreement and each of such  documents  included
herein as Exhibits to this Agreement,  hereinafter referred to as the "Ancillary
Documents,"  the  performance of all  obligations  of the Company  hereunder and
thereunder, and the authorization,  issuance (or reservation for issuance), sale
and delivery of the Shares being sold  hereunder  and the Common Stock  issuable
upon  conversion  of the  Shares  has  been  taken  and this  Agreement  and the
Stockholders  Agreement  constitute valid and legally binding obligations of the
Company,  enforceable  against the Company in accordance  with their  respective
terms, subject to: (i) judicial principles limiting the availability of specific
performance,  injunctive relief, and other equitable remedies;  (ii) bankruptcy,
insolvency, reorganization, moratorium or other similar laws now or hereafter in
effect  generally  relating  to  or  affecting   creditors'  rights;  and  (iii)
limitations on the enforceability of any indemnification provisions.

            2.6. Valid Issuance of Preferred and Common Stock.  The Shares being
purchased  by the  Investors  hereunder,  when  issued,  sold and  delivered  in
accordance  with the terms of this  Agreement  for the  consideration  expressed
herein, will be duly and validly issued, fully paid, and nonassessable, and will
be free of  restrictions  on transfer other than  restrictions on transfer under
this  Agreement  and the  Ancillary  Documents  and under  applicable  state and
federal securities laws. The Common Stock issuable upon conversion of the Shares
purchased  under this Agreement has been duly and validly  reserved for issuance
and,  upon  issuance  in  accordance  with the terms of this  Agreement  and the
Restated  Certificate,  will  be  duly  and  validly  issued,  fully  paid,  and
nonassessable   and  will  be  free  of  restrictions  on  transfer  other  than
restrictions  on transfer under this  Agreement and the Ancillary  Documents and
under applicable state and federal securities laws.

            2.7.  Governmental   Consents.  No  consent,   approval,   order  or
authorization of, or registration,  qualification,  designation,  declaration or
filing with, any federal, state or local governmental  authority, on the part of
the Company is required in  connection  with the offer,  sale or issuance of the
Shares (and the Common  Stock  issuable  upon  conversion  of the Shares) or the
consummation  of any  other  transaction  contemplated  hereby,  except  for the
following:  (i) the filing of a notice of exemption pursuant to Section 25102(f)
of the California  Corporate Securities Law of 1968, as amended (the "California
Securities  Law"),  which shall be filed by the Company  promptly  following the
Closing;  and (ii) the  compliance  with  other  applicable  state  and  federal
securities laws, which compliance will have occurred within the appropriate time
periods therefor.  Assuming that the  representations of the Investors set forth
in Section 3 below are true and  correct,  the offer,  sale and  issuance of the
Shares  in  conformity  with the terms of this  Agreement  are  exempt  from the
registration requirements of Section 5 of the Securities Act of 1933, as amended
(the "Securities Act"), and from the qualification requirements of Section 25110
of the California Securities Law.

            2.8.   Litigation.   There  is  no  action,   suit,   proceeding  or
investigation  pending  or, to the best of the  Company's  knowledge,  currently
threatened before any court,  administrative  agency or other  governmental body
(nor,  to best of the  Company's  knowledge,  is there  any  basis  for any such
action,  suit,  proceeding  or  investigation),  which (i) would  reasonably  be

                                       6
                                     -220-
<PAGE>

expected  to have a  material  adverse  effect on the  condition  (financial  or
otherwise), business, property, assets or liabilities of the Company, taken as a
whole,  or (ii) would  reasonably  be expected to have an adverse  effect on the
ability of the  Company to  consummate  the  transactions  contemplated  by this
Agreement or the Ancillary Documents,  or which otherwise challenges or seeks to
prevent, enjoin, alter or materially delay the transactions contemplated by this
Agreement or the Ancillary Documents.  The Company is not a party or subject to,
and none of the assets of the Company is bound by, the  provisions of any order,
writ,  injunction,  judgment  or  decree of any  court or  government  agency or
instrumentality.  To the best knowledge of the Company, the Company has not been
threatened with any action or proceeding under any business or zoning ordinance,
law or regulation.

            2.9. Compliance with Other Instruments.  The business and operations
of the Company have been and are being  conducted  in all  material  respects in
accordance with all applicable  laws,  rules and regulations of all governmental
authorities.  The Company is not in violation or default of any provision of its
Certificate of Incorporation or By-laws, each as amended and in effect as of the
Closing.  The Company is not in  violation  or default of any  provision  of any
instrument,  mortgage,  deed of trust,  loan,  contract,  commitment,  judgment,
decree,  order or obligation to which it is a party or by which it or any of its
properties  or assets are bound  which  would  materially  adversely  affect the
condition (financial or otherwise), business, property, assets or liabilities of
the Company or of any provision of any federal,  state or local statute, rule or
governmental  regulation which would  materially  adversely affect the condition
(financial or  otherwise),  business,  property,  assets or  liabilities  of the
Company,  taken as a whole.  The  execution,  delivery  and  performance  of and
compliance with this Agreement and the Ancillary  Documents and the issuance and
sale of the Shares will not result in any such violation, be in conflict with or
constitute,  with or without the passage of time or giving of notice,  a default
under any such provision, require any consent or waiver under any such provision
(other than any consents or waivers that have been  obtained),  or result in the
creation of any mortgage,  pledge,  lien,  encumbrance or charge upon any of the
properties or assets of the Company pursuant to any such provision.  The Company
is not subject to any legal or contractual  restriction  which would prohibit it
from entering into or performing  its  obligations  under this  Agreement or the
Ancillary Documents.

            2.10.  Brokers or Finders.  Except for the  issuance of the Warrants
and payment of $180,000 in fees to the Company's  financial  advisor,  Flemming,
Lessard & Shields,  the Company has not engaged any  brokers,  finders or agents
and the Investors have not incurred, and will not incur, directly or indirectly,
as a result of any action taken by the Company,  any  liability for brokerage or
finders' fees or agents'  commissions or any similar  charges in connection with
this  Agreement and the  transactions  it  contemplates.  The Company  agrees to
indemnify and hold harmless the Investors  from any liability for any commission
or  compensation  in the nature of a finder's fee (and the costs and expenses of
defending against such liability or asserted  liability) for which the Investors
or any of their respective officers,  partners,  employees or representatives is
responsible  as a result of any  action  taken by the  Company,  except for fees
disclosed in the preceding sentence.


                                       7
                                     -221-
<PAGE>

         3.  Representations  and  Warranties  of the  Investors.  Each Investor
severally and not jointly  hereby  represents and warrants as of the date hereof
and as of the Closing as follows:

            3.1. Experience. Such Investor is experienced in evaluating start-up
companies  such as the  Company,  and has either  individually  or  through  its
current officers such knowledge and experience in financial and business matters
that  such  Investor  is  capable  of  evaluating  the  merits  and risks of the
Investor's  prospective  investment in the Company,  and has the ability to bear
the  economic  risks of the  investment.  Investor is an  "accredited  investor"
within the meaning of Rule 501 promulgated under the Securities Act.

            3.2. Purchase  Entirely for Own Account.  Such Investor is acquiring
the Shares (and the Common Stock  issuable  upon  conversion  of the Shares) for
investment  for such  Investor's  own  account  and not with the view to, or for
resale in connection with, any distribution  thereof.  Such Investor understands
that the Shares (and the Common Stock  issuable  upon  conversion of the Shares)
have not been  registered  under the  Securities  Act by  reason  of a  specific
exemption from the  registration  provisions of the Securities Act which depends
upon,  among  other  things,  the bona fide nature of the  investment  intent as
expressed  herein.  Such Investor  further  represents that it does not have any
contract,  undertaking,  agreement  or  arrangement  with  any  person  to sell,
transfer or grant  participation  to any third person with respect to any of the
Shares (or any Common Stock  acquired upon  conversion  thereof).  Such Investor
understands  and  acknowledges  that the offering of the Shares pursuant to this
Agreement  will not, and any issuance of Common Stock on conversion  may not, be
registered  under the Securities Act on the ground that the sale provided for in
this  Agreement  and the  issuance of  securities  hereunder  is exempt from the
registration requirements of the Securities Act.

            3.3. Rule 144. Such Investor  acknowledges  that the Shares (and the
Common Stock issuable upon  conversion of the Shares) must be held  indefinitely
unless  subsequently  registered  under the  Securities Act or an exemption from
such registration is available. Such Investor is aware of the provisions of Rule
144  promulgated  under the Securities Act which permit limited resale of shares
purchased  in a  private  placement  subject  to  the  satisfaction  of  certain
conditions.  Such  Investor  covenants  that,  in the  absence  of an  effective
registration statement covering the stock in question,  such Investor will sell,
transfer,  or  otherwise  dispose of the Shares (and any Common  Stock issued on
conversion  thereof)  only in a  manner  consistent  with  the  such  Investor's
representations  and  covenants  set  forth  in this  Section  3. In  connection
therewith,  such Investor  acknowledges that the Company will make a notation on
its stock  books  regarding  the  restrictions  on  transfers  set forth in this
Section 3 and will  transfer  securities on the books of the Company only to the
extent not inconsistent therewith.

            3.4. No Public  Market.  Such  Investor  understands  that no public
market now exists for any of the securities issued by the Company,  and there is
no assurance  that a public market will ever exist for the Shares (or the Common
Stock issuable upon conversion of the Shares).


                                        8
                                     -222-
<PAGE>

            3.5.  Access  to Data.  Such  Investor  has  received  and  reviewed
information  about  the  Company  and  has had an  opportunity  to  discuss  the
Company's business,  management and financial affairs with its management and to
review the Company's facilities. Such Investor understands and acknowledges that
such discussions,  as well as any written information issued by the Company, (i)
were  intended to describe the aspects of the  Company's  business and prospects
which  the  Company  believes  to be  material,  but  were  not  necessarily  an
exhaustive description,  and (ii) may have contained forward-looking  statements
involving  known  and  unknown  risks  and  uncertainties  which  may  cause the
Company's actual results in future periods or plans for future periods to differ
materially from what was anticipated and that no  representations  or warranties
were or are being made with respect to any such  forward-looking  statements  or
the  probability  of  achieving  any of the  results  projected  in any of  such
forward-looking  statements,  except that the Company  represents  that all such
written information was prepared in good faith with a reasonable basis.

            3.6.  Authorization.  Each of this  Agreement  and the  Stockholders
Agreement  when executed and delivered by such Investor will  constitute a valid
and legally binding obligation of such Investor,  enforceable in accordance with
its terms  subject to: (i)  judicial  principles  limiting the  availability  of
specific  performance,  injunctive relief, and other equitable remedies and (ii)
bankruptcy, insolvency, reorganization,  moratorium or other similar laws now or
hereafter in effect generally relating to or affecting creditors' rights.

         4. Conditions of the Investors'  Obligations at Closing. The obligation
of each Investor to purchase Shares at the Closing is subject to the fulfillment
on or  before  the  Closing  Date  of each of the  following  conditions  by the
Company,  the waiver of which shall not be  effective  against any  Investor who
does not consent in writing thereto:

            4.1.   Representations  and  Warranties.   The  representations  and
warranties of the Company  contained in Section 2 shall be true on and as of the
Closing Date with the same effect as though such  representations and warranties
had been made on and as of the Closing Date.

            4.2.  Performance.  Each party  thereto  (other than such  Investor)
shall  have  performed  and  complied  with  all  agreements,   obligations  and
conditions  contained in this  Agreement  and the Ancillary  Documents  that are
required to be performed or complied with by it on or before the Closing Date.

            4.3.  Compliance  Certificate.  The  President  or  Chief  Executive
Officer of the Company  shall  deliver to each  Investor  on the Closing  Date a
certificate  stating that the conditions  specified in Sections 4.1 and 4.2 have
been fulfilled.

                                       9
                                     -223-
<PAGE>

            4.4. Absence of Litigation.  No action, suit, or proceeding shall be
threatened,  instituted or pending before any court or administrative  agency of
any federal, state or local jurisdiction seeking an injunction, judgment, order,
decree,  ruling,  or  charge  which  would  prevent  consummation  of any of the
transactions  contemplated  by this  Agreement or cause any of the  transactions
contemplated by this Agreement to be rescinded following consummation.

            4.5. Blue Sky. The Company shall have obtained all necessary permits
and qualifications,  if any, or secured an exemption therefrom,  required by any
state or country prior to the offer and sale of the Shares.

            4.6. Opinion of Company  Counsel.  Each Investor shall have received
from Latham & Watkins,  counsel for the Company,  an opinion with respect to the
Shares, dated as of the Closing Date, in the form attached hereto as Exhibit D.

                  (a) A copy of  resolutions  of the Board of  Directors  of the
         Company  certified  by the  secretary  of the Company  authorizing  and
         approving the execution, delivery and performance of this Agreement;

                  (b) A certificate  of incumbency  executed by the secretary of
         the Company certifying the names, titles and signatures of the officers
         authorized to execute this  Agreement and further  certifying  that the
         Restated  Certificate of the Company delivered to legal counsel for the
         Investors  at the time of the  execution  of this  Agreement  have been
         validly adopted and have not been amended or modified.

            4.8. Other Agreements. Each party thereto (other than such Investor)
shall have entered into: (i) the Stockholders  Agreement between the Company and
certain  named  investors  of even date  herewith  and  attached  in the form as
Exhibit E (the "Stockholders  Agreement");  and (ii) the License Agreement.  The
Company shall have entered into (a) the Common Stock  Purchase  Agreement in the
form  attached  hereto as Exhibit F (the "Common  Agreement");  and (b) the five
year  warrant to  purchase  1,500  shares of Common  Stock in the form  attached
hereto as Exhibit G (the "Warrants").

            4.9. Restated Certificate.  The Restated Certificate shall have been
filed with the Secretary of State of the State of Delaware.

            4.10.  Stock  Incentive Plan. The Company's Board of Directors shall
have  adopted and  approved  the 1999 Stock  Incentive  Plan of the Company (the
"Stock Option Plan") in the form attached hereto as Exhibit H.

         5.  Conditions  of  the  Company's  Obligations  at  the  Closing.  The
obligations  of the Company to each Investor under this Agreement are subject to
the  fulfillment  on or  before  the  Closing  Date  of  each  of the  following
conditions by that Investor:

                                       10
                                     -224-
<PAGE>

            5.1.   Representations  and  Warranties.   The  representations  and
warranties  of each  Investor  contained in Section 3 shall be true on and as of
the  Closing  Date  with the same  effect  as though  such  representations  and
warranties had been made on and as of the Closing Date.

            5.2.  Performance.  Each Investor  shall have performed and complied
with all agreements, obligations and conditions contained in this Agreement that
are  required to be  performed  or complied  with by it on or before the Closing
Date.

            5.3. Compliance  Certificate.  An executive officer of each Investor
shall deliver to the Company at the Closing Date a certificate  stating that the
conditions specified in Sections 5.1 and 5.2 have been fulfilled.

            5.4. Blue Sky. The Company shall have obtained all necessary permits
and qualifications,  if any, or secured an exemption therefrom,  required by any
state for the offer and sale of the Shares.

            5.5.  Other  Agreements.  Each party  thereto other than the Company
shall have  entered  into the:  (i)  Stockholders  Agreement;  (ii) the  License
Agreement; (iii) the Common Agreement; and (iv) the Warrants.

            5.6. Absence of Litigation.  No action, suit, or proceeding shall be
threatened,  instituted or pending before any court or administrative  agency of
any federal, state or local jurisdiction seeking an injunction, judgment, order,
decree,  ruling,  or  charge  which  would  prevent  consummation  of any of the
transactions  contemplated  by this  Agreement or cause any of the  transactions
contemplated by this Agreement to be rescinded following consummation.

            5.7. Restated Certificate.  The Restated Certificate shall have been
filed with the Secretary of State of the State of Delaware.

            5.8. Stock  Incentive  Plan. The Company's  Board of Directors shall
have adopted and approved the Stock Incentive Plan.

            5.9  Promissory  Note.  DTN shall have  executed and  delivered  the
Promissory Note to the Company.

            5.10 Opinion of DTN Counsel.  The Company  shall have  received from
Abrahams  Kaslow & Cassman,  counsel  for DTN,  an opinion  with  respect to the
Promissory  Note,  dated as of the Closing Date, in the form attached  hereto as
Exhibit J.

         6. Participation Rights

            6.1.  The Company  agrees  that if it  proposes to issue  additional
equity securities or any instruments,  options, warrants, convertible securities
or  other  rights  for  or  convertible   into  additional   equity   securities
(collectively,  "New Equity  Securities"),  each holder of Shares (or any Common

                                       11
                                     -225-
<PAGE>

Stock issued upon conversion thereof) shall be entitled to purchase a percentage
of  such  New  Equity  Securities  to be  issued  by the  Company  equal  to the
percentage of the Company's  aggregate  outstanding Shares (and any Common Stock
issued upon conversion thereof) held by such stockholder. If a holder elects not
to purchase all of the New Equity Securities to which it is entitled,  then each
of the other such holders shall be entitled to purchase its proportionate  share
of such New Equity Securities.

            6.2. The rights set forth in Section 6.1 shall not apply to:

                  (a)  shares  issued in  connection  with  acquisitions  by the
         Company or any of its subsidiaries of businesses or assets;

                  (b) shares issued to strategic  partners of the Company or any
         of its subsidiaries  pursuant to transactions approved by the Company's
         Board of Directors;

                  (c) shares  reserved for issuance  upon exercise of options or
         warrants granted or to be granted to officers, directors, employees and
         consultants of the Company or any of its  subsidiaries  and approved by
         the Board of Directors of the Company;

                  (d) shares issued or issuable in connection  with credit lines
         and equipment financing and leasing;

                  (e) shares  issued  upon  exercise or  conversion  of options,
         warrants or convertible securities;

                  (f) shares issued  pursuant to a registered  public  offering;
         and

                  (g)  shares  issued in  connection  with stock  splits,  stock
         dividends and similar events.

            6.3. The rights set forth in this Section 6 shall terminate  without
further  action by the  Company or any  holder of Shares  upon  completion  of a
firmly underwritten public offering by the Company.

         7. Miscellaneous

            7.1. Governing Law. This Agreement shall be governed in all respects
by the  laws of the  State of  Delaware  without  regard  to  choice  of laws or
conflict of laws provisions thereof.

            7.2.  Survival.  The  representations,   warranties,  covenants  and
agreements   made  herein  shall   survive  the  closing  of  the   transactions
contemplated hereby.

            7.3.  Successors and Assigns.  Except as otherwise  provided herein,
the  provisions  hereof shall inure to the benefit of, and be binding upon,  the
successors,  assigns, heirs, executors and administrators of the parties hereto;

                                       12
                                     -226-
<PAGE>

provided, however, that the rights of each Investor to purchase Shares shall not
be assignable without the consent of the Company and the other Investor in their
sole discretion.

            7.4.  Entire  Agreement;  Amendment.  This  Agreement  and the other
documents delivered pursuant hereto constitute the full and entire understanding
and agreement  among the parties with regard to the subjects hereof and thereof.
Neither this Agreement nor any term hereof may be amended, waived, discharged or
terminated other than by a written  instrument  signed by the party against whom
enforcement of any such amendment,  waiver,  discharge or termination is sought.
Notwithstanding  the foregoing,  holders of a majority of the outstanding Shares
(whether or not  converted)  may waive or amend,  on behalf of each Investor and
other holders of Shares,  any provisions hereof benefiting the Investors so long
as the  effect  thereof  will be that all such  Investors  and other  holders of
Shares will be treated equally.

            7.5. Notices, Etc. All notices and other communications  required or
permitted  hereunder  shall be in writing and shall be mailed by  registered  or
certified  mail,  postage  prepaid,   return  receipt  requested,  or  otherwise
delivered  by hand or by  messenger,  addressed  (a) if to an  Investor  at such
Investor's  address  set forth on Exhibit A to this  Agreement  or at such other
address as such Investor shall have furnished to the Company in writing,  or (b)
if to any other holder of any Shares,  at such address as such holder shall have
furnished  the Company in writing,  or,  until any such holder so  furnishes  an
address to the  Company,  then to and at the  address of the last holder of such
Shares who has so furnished an address to the Company, or (c) if to the Company,
at its address set forth on the first page of this  Agreement  addressed  to the
attention of the  Corporate  Secretary,  or at such other address as the Company
shall have  furnished to the  Investors.  If notice is provided by mail,  notice
shall be deemed to be given upon proper deposit in a mailbox.

            7.6.  Delays or  Omissions.  No delay or omission  to  exercise  any
right,  power or remedy  accruing to any holder of any Shares upon any breach or
default of the Company under this Agreement  shall impair any such right,  power
or remedy of such  holder,  nor shall it be construed to be a waiver of any such
breach or default, or an acquiescence therein, or of or in any similar breach or
default  thereafter  occurring;  nor shall any  waiver of any  single  breach or
default  be deemed a waiver  of any  other  breach  or  default  theretofore  or
thereafter  occurring.  Any waiver,  permit,  consent or approval of any kind or
character  on the  part of any  holder  of any  breach  or  default  under  this
Agreement,  or any  waiver  on the  part  of any  holder  of any  provisions  or
conditions of this Agreement,  must be in writing and shall be effective only to
the  extent  specifically  set  forth in such  writing  or as  provided  in this
Agreement.  All  remedies,  either  under this  Agreement or by law or otherwise
afforded to any holder, shall be cumulative and not alternative.

            7.7. California Corporate Securities Law. THE SALE OF THE SECURITIES
WHICH  ARE THE  SUBJECT  OF THIS  AGREEMENT  HAS NOT  BEEN  QUALIFIED  WITH  THE
COMMISSIONER OF CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF SUCH

                                       13
                                     -227-
<PAGE>

SECURITIES OR THE PAYMENT OR RECEIPT OF ANY PART OF THE  CONSIDERATION  THEREFOR
PRIOR TO SUCH QUALIFICATION IS UNLAWFUL, UNLESS THE SALE OF SECURITIES IS EXEMPT
FROM THE  QUALIFICATION  BY SECTION  25100,  25102,  OR 25105 OF THE  CALIFORNIA
CORPORATIONS  CODE.  THE RIGHTS OF ALL PARTIES TO THIS  AGREEMENT  ARE EXPRESSLY
CONDITIONED  UPON  SUCH  QUALIFICATION  BEING  OBTAINED,  UNLESS  THE SALE IS SO
EXEMPT.

            7.8.  Expenses.  The Company and each Investor  shall bear their own
expenses and legal fees incurred on their behalf with respect to this  Agreement
and the transactions contemplated hereby.

            7.9.  Counterparts.  This Agreement may be executed in any number of
counterparts  and signatures may be delivered by facsimile,  each of which shall
be enforceable against the parties actually executing such counterparts, and all
of which together shall constitute one instrument.

            7.10. Severability. If any provision of this Agreement becomes or is
declared by a court of competent  jurisdiction to be illegal,  unenforceable  or
void,  portions of such  provision,  or such  provision in its entirety,  to the
extent  necessary,  shall be severed from this Agreement and the balance of this
Agreement shall be enforceable in accordance with its terms.

            7.11. Dispute Resolution.  Any dispute, claim or controversy arising
under  this  Agreement  or  in  any  way  related  to  this  Agreement,  or  its
interpretation,  enforceability  or  inapplicability  that cannot be resolved by
mutual agreement of the parties shall be submitted to binding  arbitration.  The
arbitration  shall be conducted by a single  arbitrator  mutually agreed upon by
the parties or, if no arbitrator is mutually selected within thirty (30) days of
a demand  therefor,  then by a retired judge from the Judicial  Arbitration  and
Mediation  Service/Endispute  ("JAMS") office located in San Diego,  California.
The arbitration  shall be conducted in San Diego,  California in accordance with
the Commercial  Arbitration Rules of the American Arbitration  Association.  The
arbitration  award shall be final and binding,  and judgment on the award may be
entered in any court having jurisdiction  thereof. The parties hereby consent to
the  consolidation of any arbitration  hereunder with any arbitration  commenced
under the  License  Agreement,  the  Stockholders  Agreement,  the Common  Stock
Purchase Agreement and/or the Warrants.

                            [SIGNATURE PAGE FOLLOWS]


                                       14
                                     -228-
<PAGE>



         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first above written.

COMPANY:                            EARTHSCAN NETWORK INC.


                                    By:/s/ John Rasure
                                       ------------------------------
                                       John Rasure
                                    Title: President

                                    By:/s/ Sonya Kay Porth
                                       ------------------------------
                                       Sonya Kay Porth
                                    Title:Corporate Secretary


INVESTORS:                          DATA TRANSMISSION NETWORK CORPORATION

                                    By:/s/Greg T. Sloma
                                       ------------------------------
                                       Greg T. Sloma
                                    Title:President & COO

                                    By:/s/ Brian L. Larson
                                       ------------------------------
                                       Brian L. Larson
                                    Title:SVP & CFO


                                    PHOTON RESEARCH ASSOCIATES, INC.

                                    By:/s/ James A. Myer
                                       -------------------------------
                                       James A. Myer
                                    Title: CO-COB

                                    By:/s/ Sonya Kay Porth
                                       ------------------------------
                                       Sonya Kay Porth
                                    Title:Corporate Secretary/Treasurer



                                       15
                                     -229-
<PAGE>



                                   Exhibit A

                               List of Investors

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       16
                                     -230-
<PAGE>


                                   Exhibit B

                               License Agreement

                                LICENSE AGREEMENT

         THIS LICENSE  AGREEMENT  ("Agreement")  is made as of December 16, 1999
(the  "Effective  Date") by and between  Photon  Research  Associates,  Inc.,  a
California  corporation  ("Licensor")  and  EarthScan  Network  Inc., a Delaware
corporation ("Licensee"), with reference to the following facts:

         A. Licensor has developed and owns certain Technology.

         B. Licensee is desirous of licensing and exploiting the Technology,  on
the terms and conditions set forth within this Agreement.

         NOW  THEREFORE,  in  consideration  of the  foregoing and of the mutual
promises   hereinafter   set  forth,   as  well  as  other  good  and   valuable
consideration,  the  sufficiency  of which is hereby  acknowledged,  the parties
agree as set forth below.

1.  Definitions.


            a. "Affiliate"  shall mean any corporation or other business entity,
in whatever  country  organized,  which,  directly or indirectly,  controls,  is
controlled  by or is under common  control with  Licensee.  "Control" as used in
this  definition  shall mean the  ownership of more than 50% of the issued share
capital  or the legal  power to direct or cause  the  direction  of the  general
management and policies of the party in question, by contract or otherwise.

            b.  "Documentation"  means (i) the internal source code  (including,
without limitation,  all comments and procedural code, flow charts,  schematics,
statements  of  principles of operations  and  architecture  standards)  for the
software  included in the Licensed  Products (other than Third Party  Software);
(ii) development  process  documents  (including  schematics,  diagrams and flow
charts)  prepared in connection  with the  development of the Licensed  Products
(other  than  Third  Party  Software);  and  (iii) the end user  manual  for the
Licensed Products.

            c. "Improvements" means and comprises any correction,  modification,
alteration,  enhancement,  improvement,  update  or  revision  to  the  Licensed
Products or the Documentation.

            d. "Intellectual  Property" means and comprises any patents,  patent
applications,  copyrights  and  copyright  applications  and  trade  secrets  of
Licensor claiming or embodied in the Licensed Products, the Documentation or the
Improvements thereto.

            e. "Know How" means and comprises  technical data and information in
Licensor's  possession  necessary or helpful for Licensee to make, have made and
use the  Licensed  Products,  the  Documentation  or any  Improvements  thereto,
including,  but  not  limited  to,  techniques,  methods,  formulations,  plans,
specifications, programs, schematics, designs and other similar information.

                                       17
                                     -231-
<PAGE>

            f.  "Licensed  Products"  means and comprises  the "Tierra  Station"
system and related  software which  incorporates  or is derived in part from the
Technology  and is described in Exhibit "A" attached  hereto,  but excluding any
Third Party Software.

            g.  "Technology"  means and comprises the Know-How and  Intellectual
Property.

            h.  "Third  Party  Software"  means  and  comprises  those  software
programs  owned by  third  parties  which  are  used in  connection  with or are
integrated  with the  Licensed  Products,  as set forth on Exhibit "B"  attached
hereto.

2. Grant of Licenses.


            a. Technology  License.  Subject to the terms and conditions of this
Agreement,  Licensor  hereby  grants to Licensee an  exclusive  (even as against
Licensor), worldwide,  fully-paid, perpetual license, with rights to sublicense,
to (i) use, test, update, upgrade,  enhance, modify, lease and sell the tangible
elements of the  Technology,  Licensed  Products and Licensor's  Improvements to
Licensed  Products and Documentation to ingest,  process,  store and disseminate
information to customers within the Field of Exploitation (as defined in Section
2(b) below) and (ii)  reproduce,  make derivative  works of,  publicly  perform,
publicly  display in any form or medium,  whether now known or later  developed,
distribute,  make and have  made,  use and  sell any of the  Technology  and all
intangible  elements of the Licensed  Products and  Documentation and Licensor's
Improvements  to  Licensed  Products  and  Documentation  for  the  purposes  of
developing and marketing  products and services of Licensee  within the Field of
Exploitation.  Notwithstanding  the  foregoing,  Licensee  will not  sublicense,
distribute,  lease  or sell  all or any  portions  of the  Technology,  Licensed
Products or  Documentation or Licensor's  Improvements  thereto to third parties
without the prior approval of Licensee's Board of Directors.

            b.  Field  of  Exploitation.   "Field  of  Exploitation"  means  all
commercial  applications  or markets for  information  disseminated  through the
Licensed Products and any Improvements  thereto,  but excluding the exploitation
in any manner of Licensed  Products and any Improvements  thereto in military or
government intelligence  applications or markets worldwide.  Notwithstanding the
foregoing,  if  Licensor  desires  to  exploit  the  Licensed  Products  or  any
Improvements  thereto in a  commercial  application  or market that is otherwise
included in the Field of  Exploitation,  Licensor  may so indicate its desire by
written notice to Licensee and Data Transmission  Network  Corporation  ("DTN").
Within thirty (30) days following receipt of such notice, Licensee shall convene
a  meeting  of its  Board of  Directors,  who  shall  consider  such  commercial
application or market described in Licensor's  notice,  and the Licensee's Board
of Directors shall determine  whether Licensee shall (i) pursue such application
or market (in which case Licensee shall then use commercially reasonable efforts
to pursue  such  application  or  market,  in light of  Licensee's  then-current
business  plan and  product  development  plan) or (ii) elect not to pursue such
application or market. However, if Licensee's Board of Directors is evenly split
on  whether  or not to pursue  any such  application  or  market  and all of the
directors appointed by DTN (pursuant to Section ___ of that certain Stockholders
Agreement  between  Licensor,  Licensee,  DTN and  other  persons  of even  date
herewith)  have  voted  to  pursue  such  appplication  or  market,   then  such
application  or  market  shall  remain  included  in the  Field of  Exploitation

                                       18
                                     -232-
<PAGE>

regardless of whether Licensee pursues such application or market. If Licensee's
Board of Directors  elects not to pursue any such  application  or market or the
Board is at an  impasse  other  than under the  circumstances  described  in the
preceding  sentence,  then such application or market shall thereafter be deemed
excluded from the Field of Exploitation and Licensor may pursue the exploitation
of such application or market independently.

            c. Third  Party  Software.  Notwithstanding  any  provision  of this
Agreement  to the  contrary,  Licensee  acknowledges  and agrees that the use of
Third Party  Software is required to achieve the intended  functionality  of the
Licensed Products,  that Licensee must independently  obtain its own licenses to
use the Third Party  Software,  and that  Licensor is not licensing or otherwise
providing  to  Licensee   any  rights  to  the  Third  Party   Software  or  the
documentation  related  thereto.  Licensor makes no  representation  or warranty
whatsoever concerning the Third Party Software or related documentation,  or the
ability  of  Licensee  to obtain  the  rights to use such  software  or  related
documentation.

            d.  Ownership.  The entire  rights,  title and  interest in and full
ownership  of the  Licensed  Products,  Documentation  and  Technology,  and all
Improvements and copies thereof,  together with all Intellectual Property rights
claiming or embodied in the  foregoing,  shall remain  exclusively  with and the
exclusive property of Licensor,  subject only to the right and license expressly
granted to Licensee herein.  This Agreement does not provide Licensee with title
or ownership of the  Licensed  Products,  Documentation  or  Technology,  or any
Improvements thereto, but only a right of limited use.

3.  Improvements.


            a.  Licensee  Improvements.  To the extent  developed,  written,  or
conceived by Licensee or its agents or  contractors  after the  Effective  Date,
Licensee  shall  own  all   Improvements   and  all  technology,   know-how  and
intellectual property claiming or embodied in such Improvements or the documents
related  thereto  (to the extent not already  licensed  to Licensee  hereunder).
Licensee  agrees  to  promptly   disclose  and  deliver  to  Licensor  all  such
Improvements  during  the Term of this  Agreement.  Licensee  hereby  grants  to
Licensor a non-exclusive,  worldwide, fully-paid, perpetual license, with rights
to sublicense,  to (i) use, test, update,  upgrade,  enhance,  modify, lease and
sell the tangible elements of the technology, know-how and intellectual property
claiming  or embodied  in  Licensor's  Improvements  to  Licensed  Products  and
Documentation to ingest, process, store and disseminate information to customers
outside the Field of Exploitation and (ii) reproduce,  make derivative works of,
publicly perform,  publicly display in any form or medium,  whether now known or
later  developed,  distribute,  make and have made,  use and sell all intangible
elements of Licensee's  Improvements to Licensed  Products and Documentation for
the  purposes of  developing  and  marketing  products  and services of Licensor
outside of the Field of Exploitation.

            b.  Licensor  Improvements.  To the extent  developed,  written,  or
conceived  by  Licensor  or its agents or  contractors,  Licensor  shall own all
Improvements and all Technology claiming or embodied in such Improvements or the
documents  related thereto.  Licensor agrees to promptly disclose and deliver to
Licensee  all  such  Improvements  during  the  Term  of  this  Agreement.   All
Improvements  by Licensor  during the Term of this Agreement shall become a part

                                       19
                                     -233-
<PAGE>

of the  Technology  upon  creation  and subject to the  licenses  granted  under
Section 2 and the other terms and conditions of this Agreement.

4. Non-Disclosure of Information.

            a. Confidentiality  Obligation. Each party shall keep in confidence,
use only for the purposes and as expressly  authorized  herein,  and prevent the
disclosure  to  any  person  or  persons  (outside  its  organization  or to any
unauthorized person or persons) of all of the ideas,  processes,  trade secrets,
inventions, discoveries, know-how, other technical research and development, and
commercial  and  proprietary  information  disclosed  to such party by the other
party (collectively, "Proprietary Information"). Each party's obligation to keep
Proprietary  Information  of the other in  confidence  will  include  disclosing
Proprietary  Information  to employees or agents of such party only as necessary
for the performance of such party's obligations under this Agreement,  requiring
third parties to whom such party discloses Proprietary Information to enter into
confidentiality obligations similar to those included in this Paragraph, marking
written copies of Proprietary  Information  as  "Confidential/Proprietary  Trade
Secret   Information"  and  maintaining  similar  markings  on  files  in  which
Proprietary Information is stored. Either party shall have the right to disclose
Proprietary  Information of the other to any  sublicensee,  subject to its first
obtaining the written  agreement of such  sublicensee to abide by the provisions
of this Section 4.

            b. Information Not Included.  Proprietary Information, as defined in
Paragraph 4(a), does not include any information which:

                  (i) was in the public domain at the time it was disclosed;

                  (ii)  was  independently  known  to a  party  at the  time  of
disclosure as shown by  documentation  sufficient to establish  such  knowledge,
from a source not subject to confidentiality obligations to the other party; or

                  (iii) was disclosed to a party by third parties not subject to
confidentiality obligations to the other party.

            c. Documents.  All documents,  books, notebooks,  papers,  drawings,
sketches,  formulas (or copies of extracts thereof),  and other data of any kind
and  description  pertaining  to  the  Proprietary  Information   (collectively,
"Proprietary Documents") that have been or will be disclosed by one party to the
other party have been or will be  disclosed  with a clear  understanding  by the
receiving party that they contained or will contain information  valuable to the
disclosing  party.  The  receiving  party  shall  make  only  one  copy  of  the
Proprietary  Documents  and  Documentation  (other than the end user  manual) to
create an archive copy for use as a backup.  Upon termination of this Agreement,
each party will promptly  deliver to the other party all  Proprietary  Documents
and  Documentation  of the other party,  including all copies of the Proprietary
Documents and Documentation in its possession.

            d. Compelled Disclosure. In the event that a party or anyone to whom
such party transmits any Proprietary Information or Proprietary Documents of the
other party in  accordance  with this  Agreement is legally  requested  (by oral
questions,  interrogatories,  request for  information  or documents,  subpoena,

                                       20
                                     -234-
<PAGE>

civil investigative demand or similar process) or otherwise required to disclose
any Proprietary  Information or Proprietary  Documents of the other party,  such
party  will  provide  the other  party with  notice,  prior to  disclosing  such
Proprietary  Information or Proprietary  Documents,  so that the other party may
seek  an  appropriate   protective  order  and/or  waive  compliance  with  this
Agreement.  If, in the absence of a protective  order or the receipt of a waiver
hereunder,  such  party  is  nonetheless  legally  compelled  to  disclose  such
information,  it may, without liability hereunder,  furnish that portion of such
Proprietary Information or Proprietary Documents.

5. [Intentionally Omitted.]

6. Marking  Products.  Licensee shall  appropriately  mark all Licensed Products
(and components thereof) as reasonably required by Licensor from time to time.

7. Representations and Warranties.  Licensor represents and warrants to Licensee
and DTN as of the  Effective  Date that:  (a) Licensor has the right,  power and
authority to grant the  licenses  granted in this  Agreement  and to perform its
obligations hereunder;  (b) the Technology does not infringe any U.S. or foreign
patent,  trademark or copyright of any third party, nor is Licensor aware of any
threatened  claim of any such  infringement;  (c)  Licensor  is not aware of any
third-party products which infringe on its proprietary rights in the Technology;
(d)  this  Agreement  constitutes  valid  and  legally  binding  obligations  of
Licensor, enforceable against Licensor in accordance with its terms, subject to:
(i) judicial  principles  limiting  the  availability  of specific  performance,
injunctive relief, and other equitable  remedies;  (ii) bankruptcy,  insolvency,
reorganization,  moratorium  or other  similar  laws now or  hereafter in effect
generally  relating to or affecting  creditors' rights; and (iii) limitations on
the  enforceability of  indemnification  provisions;  (e) except with respect to
Third Party Software and hardware  manufactured by third parties included in the
Licensed  Products,  for which no  representation or warranty is made hereunder,
Licensor is the owner of all right,  title and  interest in and to the  Licensed
Products and  Technology  and has not granted  licenses  thereunder to any other
entity in the Field of  Exploitation;  (f) except  with  respect to Third  Party
Software and hardware  manufactured  by third  parties  included in the Licensed
Products,  for  which no  representation  or  warranty  is made  hereunder,  the
Licensed  Products are free from defects in  manufacture,  materials and design;
(g) the Licensed  Products  function on the machines and with operating  systems
for which  they are  designed;  and (h) the  Licensed  Products  conform  to the
specifications  and functions set forth in the  Documentation.  Licensor further
represents and warrants to Licensee and DTN that neither the performance nor the
functionality  of the Licensed  Products  will be affected by any changes to the
date format or date calculations within any part of the Licensed Products either
before,  during or after the year 2000.  Without  limiting the generality of the
foregoing,  Licensor represents and warrants that the Licensed Products are year
2000  compliant.  Year  2000  compliant  means  fault-free  performance  in  the
processing  of date  and  date-related  data  (including,  but not  limited  to,
calculating,  comparing and sequencing) by the Licensed  Products,  individually
and in combination,  as a system. Fault-free performance means (i) no invalid or
incorrect results or abnormal  termination will occur prior to, during and after
January  1, 2000 as a result of date or  date-related  data or data  processing;
(ii) proper  calculation and handling of leap years; and (iii) except for normal
user interfaces  (e.g. four digit date entry)  identified in the  Documentation,
such date data processing shall be transparent to a user.  Except as provided in
this Section 7, Licensor  makes no  representations  or  warranties,  express or
implied,  concerning this Agreement,  the Technology,  the  Documentation or the

                                       21
                                     -235-
<PAGE>

Licensed  Products.  The  representations  and warranties of Licensor under this
Section 7 shall  survive for a period of five years from and after the Effective
Date.  Any  claim  for a  breach  of  such  representations  and  warranties  or
indemnification   in  respect   thereof   must  be  asserted  in  writing   with
particularity against Licensor prior to the expiration of such five-year period.
EXCEPT  FOR THE  EXPRESS  WARRANTIES  SET  FORTH  IN THIS  SECTION  7,  LICENSOR
DISCLAIMS ALL OTHER  WARRANTIES,  EITHER  EXPRESS OR IMPLIED,  INCLUDING BUT NOT
LIMITED TO  WARRANTIES  OF  MERCHANTABILITY,  FITNESS FOR A PARTICULAR  PURPOSE,
NON-INFRINGEMENT OR ARISING FROM A COURSE OF DEALING OR USAGE IN TRADE.

8. Indemnification.

            a. Except for claims which are subject to Licensor's indemnification
as set forth in Section 8(b) below,  Licensee  hereby  indemnifies and agrees to
hold harmless  Licensor and its officers,  directors and  shareholders  from and
against any and all claims, demands, and actions, and any liabilities,  damages,
or expenses resulting therefrom, including court costs and reasonable attorneys'
fees,  resulting from the  manufacture or use (or misuse) of Licensed  Products,
Documentation  or Technology (or any  Improvements  thereto made by Licensee) by
Licensee or its  Affiliates or any breach of Licensee's  obligations  under this
Agreement.  Licensee's  obligations  under this Section  8(a) shall  survive the
termination of this Agreement for any reason.  Licensor  agrees to give Licensee
prompt  notice of any such  claim,  demand,  or action and to  cooperate  in the
defense and settlement of said claim,  demand, or action as reasonably requested
by Licensee; provided, that Licensee shall reimburse Licensor for all reasonable
expenses incurred by such cooperation. Licensee shall not settle any such claim,
demand or action  without  the prior  written  consent  of  Licensor,  not to be
unreasonably withheld or delayed.

            b. Licensor hereby  indemnifies and agrees to hold harmless Licensee
and DTN and their respective officers and directors from and against any and all
claims,  demands,  and  actions,  and  any  liabilities,  damages,  or  expenses
resulting  therefrom,  including  court costs and  reasonable  attorneys'  fees,
resulting  from  a  breach  of  Licensor's  representations  and  warranties  or
covenants set forth herein.  Subject to Section 7, Licensor's  obligations under
this  Section  8(b) shall  survive the  termination  of this  Agreement  for any
reason. Licensee and DTN agree to give Licensor prompt notice of any such claim,
demand,  or action and to cooperate in the defense and settlement of said claim,
demand, or action as reasonably requested by Licensor;  provided,  that Licensor
shall reimburse  Licensee and DTN for all reasonable  expenses  incurred by such
cooperation.  If Licensee's use of the Licensed Products or Improvements thereto
made by Licensor is enjoined,  Licensee  agrees to allow  Licensor at Licensor's
option and  expense,  to either  secure the right for  Licensee  to  continue to
exercise its rights in such Licensed Products or Improvements,  or to replace or
modify  them in an  equivalent  manner so they  become  noninfringing.  Licensee
hereby  agrees that  Licensor  shall have no  liability  for or with  respect to
infringement actions or claims to the extent that they arise by reason or result
from:  (a)  modification  of  Licensed  Products or  Improvements  other than by
Licensor;  or (b) Licensee's  failure to utilize an updated or modified  version
provided by Licensor;  or (c) Licensor's  compliance  with  Licensee's  designs,
plans or  specifications;  or (d) the combination of  non-infringing  items with
items  not  supplied  or  specified  by  Licensor;  provided,  the  infringement
described in (a) through (d) would have been avoided but for such  modification,
use, compliance or combination;  or (e) any infringement claim in which Licensee

                                       22
                                     -236-
<PAGE>

has an interest. Licensee shall indemnify Licensor from all claims and expenses,
including  reasonable  attorneys'  fees,  which are occasioned by the exceptions
stated in the preceding sentence of this paragraph.

9. Enforcement of Intellectual Property.

            a. Enforcement.  Licensee, at its sole expense, shall have the first
right,  but not  the  obligation,  to  enforce  all  proprietary  rights  in the
Technology with respect to any suspected infringement of such proprietary rights
in the  Field of  Exploitation  which  occurs  in whole or in part  prior to the
termination  of this  Agreement  and,  subject  to Section  9(c),  to retain any
recovery arising out of the prosecution of such actions. Licensee shall promptly
notify  Licensor  if it becomes  aware of any  suspected  infringement  by third
parties of any  proprietary  rights in the  Technology.  Licensor shall have the
non-exclusive  right to enforce the  proprietary  rights in the Technology  with
respect to any suspected infringement in the Field of Exploitation which occurs,
if after thirty (30) days after  Licensee's  receipt of  Licensor's  request for
Licensee to initiate an action,  Licensee has not initiated an action to enforce
such  proprietary  rights  with  respect to such  infringement.  Licensee  shall
cooperate  with Licensor in any such action at  Licensor's  request and expense,
but Licensee  shall not be  obligated  to become a party to any such  proceeding
unless the laws of the  jurisdiction in which the action is to be filed preclude
Licensor from enforcing the proprietary rights in the Technology without joining
Licensee  as a  party.  Licensor  shall be  entitled  to any  recovery  from any
proceeding it pursues at its sole expense  under this Section 9. Licensor  shall
have the exclusive  right to enforce all  proprietary  rights in the  Technology
with respect to any suspected infringement outside the Field of Exploitation.

            b. Right to Intervene.  Each party shall have the right to intervene
in any action  relating to an  infringement  of the  Technology  in the Field of
Exploitation  brought  by the  other  party,  at the  intervening  party's  sole
expense.

            c. Joint  Action.  If any action  relates to  infringing  activities
described  above under Section 9(a) and the parties  jointly  participate in the
proceeding (in more than name only),  each bearing their own expenses,  then the
parties shall equitably share the recovery.

10.  Termination.


            a.  Termination.  This  Agreement  shall  be  effective  as  of  the
Effective  Date and shall  continue in effect  until  terminated  as provided in
Section 10(b) below (the "Term").

            b.  Termination  Rights.  This Agreement may be terminated,  without
liability to the party terminating:

                  (i) By Licensee, upon 90 days' notice to Licensor.


                  (ii) By a party,  immediately  upon notice to the other party,
if:
                                       23
                                     -237-
<PAGE>

                       (1) that other party makes a general assignment of all or
substantially all of its assets for the benefit of its creditors;

                       (2)  that  other  party  applies  for,  consents  to,  or
acquiesces in the appointment of a receiver,  trustee,  custodian, or liquidator
for its business or all or substantially all of its assets;

                       (3) that other party files,  or consents to or acquiesces
in, a  petition  seeking  relief  or  reorganization  under  any  bankruptcy  or
insolvency laws; or

                       (4) a petition seeking relief or reorganization under any
bankruptcy  or  insolvency  laws is filed  against  that other  party and is not
dismissed within 90 days after it was filed.

                  (iii) By a party,  immediately upon notice to the other party,
if the other party's  material  breach of this  Agreement  continues  uncured or
uncorrected for 30 days after notice; provided,  however, if the breaching party
(i)  reasonably  requires  longer  than 30 days to cure or correct  such  breach
within such 30-day  period,  and (ii)  notifies the  non-breaching  party of the
circumstances  requiring  such longer  period to cure or correct such breach and
the breaching party's plans to cure or correct such breach, then the cure period
shall be extended for such  reasonable time as may be so required to effect such
cure or  correction,  subject to a maximum of 180 days,  so long as during  that
time the breaching party  diligently acts in accordance with such plan to effect
that cure or correction.

            c. Effect of Termination. Upon the termination of this Agreement:

                  (i) The rights and licenses  granted  hereby to Licensee shall
immediately  terminate,  notwithstanding  the  designation  of such  licenses as
perpetual hereunder; and

                  (ii) The rights and licenses  granted hereby to Licensor under
Section 3(a) shall  immediately  terminate,  notwithstanding  the designation of
such licenses as perpetual hereunder;

                  (iii) each  party  shall  immediately  return to the other all
physical  embodiments of all technology and Proprietary  Information,  including
all  Proprietary  Documents and  documentation,  owned by the other party.  Each
party  shall  thereafter  cease  to  use  the  technology  and  any  Proprietary
Information, including all Proprietary Documents and documentation, of the other
party; and

                  (iv) notwithstanding the termination of license rights granted
to a party,  said license  rights shall  survive  such  termination  solely with
respect to those products (including improvements thereto) which have been sold,
leased or distributed to third parties during the Term of this Agreement.

                                       24
                                     -238-
<PAGE>

11.  Limitation  of Liability.  In no event shall  Licensor's  total  cumulative
liability to Licensee and/or DTN (considered in the aggregate),  if any, for all
claims of any kind resulting from Licensor's breach of its  representations  and
warranties  hereunder or indemnification in respect thereof or otherwise arising
from or  relating to a breach of such  representations  and  warranties,  exceed
$3,000,000 in the aggregate.  IN THE EVENT OF ANY CONFLICT  BETWEEN THIS SECTION
11 AND ANY OTHER  PROVISION OF THIS  AGREEMENT,  THIS SECTION 11 SHALL  CONTROL.
THIS SECTION 11 SHALL APPLY NOTWITHSTANDING ANY FAILURE OF REMEDY HEREUNDER.

12.  Miscellaneous.

            a. Entire  Agreement;  Modifications.  This  Agreement  contains the
entire  agreement  between the parties  hereto with respect to the  transactions
contemplated  hereby,  and contains all of the terms and conditions  thereof and
supersedes  all prior  agreements  and  understandings  relating  to the subject
matter  hereof.  No changes or  modifications  of or additions to this Agreement
shall be valid  unless  the same  shall be in  writing  and signed by each party
hereto.

            b.  Severability.  The provisions of this Agreement  shall be deemed
severable  and  the  invalidity  or  unenforceability  of any one or more of the
provisions hereof shall not affect the validity and  enforceability of the other
provisions hereof.

            c. Successors and Assigns.  This Agreement shall be binding upon and
inure to the benefit of the parties, their successors and assigns.

            d. Waivers.  No waiver of any of the  provisions  of this  Agreement
shall be deemed to be or shall  constitute  a waiver of any other  provision  of
this  Agreement,  whether  or not  similar,  nor shall any waiver  constitute  a
continuing waiver. No waiver of any provision of this Agreement shall be binding
on the parties  hereto  unless it is executed in writing by the party making the
waiver.

            e. Notices. All notices,  requests, demands and other communications
under this Agreement shall be in writing and by overnight  courier with next-day
delivery, and shall be effective as of the delivery date shown by such overnight
courier's  documentation if sent postage prepaid,  and properly addressed to the
following addresses:

         If to Licensor:

                  Photon Research Associates, Inc.
                  5720 Oberlin Drive
                  San Diego, CA  92121
                  Attention: Sonya Porth, Corporate Secretary

                                       25
                                     -239-
<PAGE>

         If to Licensee:

                  EarthScan Network Inc.
                  6565 Americas Parkway
                  Albuquerque, New Mexico  87110
                  Attention: John Rasure, President

         If to DTN:

                  Data Transmission Network Corp.
                  9110 W Dodge Road., Suite 200
                  Omaha, Nebraska  68114-3316
                  Attention:  Greg Sloma, President

Either  party may  change the  address to which  notices to such party are to be
addressed by giving the other party hereto  written notice of such change in the
manner herein set forth.

            f.  Governing  Law. This Agreement is made and shall be governed by,
and construed and enforced in accordance  with (i) the laws of the United States
of America and (ii) the internal laws of the State of California, without regard
to the  conflict of laws  principles  thereof,  as the same apply to  agreements
executed  solely by residents of  California  and wholly to be performed  within
California.

            g. Dispute  Resolution.  Any dispute,  claim or controversy  arising
under  this  Agreement  or  in  any  way  related  to  this  Agreement,  or  its
interpretation,  enforceability  or  inapplicability  that cannot be resolved by
mutual agreement of the parties shall be submitted to binding  arbitration.  The
arbitration  shall be conducted by a single  arbitrator  mutually agreed upon by
the parties or, if no arbitrator is mutually selected within thirty (30) days of
a demand  therefor,  then by a retired judge from the Judicial  Arbitration  and
Mediation  Service/Endispute  ("JAMS") office located in San Diego,  California.
The arbitration  shall be conducted in San Diego,  California in accordance with
the Commercial  Arbitration Rules of the American Arbitration  Association.  The
arbitration  award shall be final and binding,  and judgment on the award may be
entered in any court having jurisdiction  thereof. The parties hereby consent to
the  consolidation of any arbitration  hereunder with any arbitration  commenced
under  the  Series  A  Preferred  Stock  Purchase  Agreement,  the  Stockholders
Agreement, the Common Stock Purchase Agreement and/or the Warrants.

            h. Independent Contractors.  Each party is engaged in an independent
business  and  shall  perform  its  obligations   under  this  Agreement  as  an
independent contractor and not as an agent or representative of any other party.
Neither party shall have any right or authority to create any obligation or make
any representation or warranty in the name or on behalf of the other party. This
Agreement shall not be interpreted or construed to create an association,  joint
venture  or  partnership  between  the  parties  or to  impose  any  partnership
obligation or liability upon any party.

            i.  Attorneys'  Fees.  In any  arbitration  or  other  legal  action
hereunder,  the  prevailing  party shall be  entitled,  in addition to any other

                                       26
                                      -240-
<PAGE>

relief granted, to all actual  out-of-pocket costs and expenses incurred by such
prevailing  party  in  connection  with  such  arbitration  or  action  and  the
enforcement and collection of any judgment rendered therein, including,  without
limitation,  all reasonable  attorneys' fees, consultant fees and expert witness
fees,  and a right to such costs and  expenses  shall be deemed to have  accrued
upon the  commencement  of such action and shall be  enforceable  whether or not
such action is prosecuted to judgment.

            j.  Survival.  The parties  hereto agree that,  upon  termination or
expiration of this Agreement for any reason,  Sections 1, 2(d), 4, 8, 10(c),  11
and 12 shall survive.

            k. No Third-Party Benefits. None of the provisions of this Agreement
shall be for the benefit of, or  enforceable  by, any  third-party  beneficiary;
provided,  however, that DTN shall be an express third-party  beneficiary of the
representations  and warranties  set forth in Section 7 and the  indemnification
provisions in Section 8(b) but in connection  therewith  shall be subject to the
provisions of Sections 4, 11 and 12 hereof.

            l.   Counterparts.   This  Agreement  may  be  executed  in  several
counterparts  all of which together shall constitute one and the same instrument
with the same force and effect as though each of the parties  had  executed  the
same document.

            m. Headings. The Section and Subsection headings used herein are for
convenience  of reference  only, are not a part of this Agreement and are not to
affect the construction of, or be taken into consideration in interpreting,  any
provision of this Agreement.

            n.  Bankruptcy.  THE  PARTIES  INTEND  FOR  THIS  AGREEMENT  AND THE
LICENSES  GRANTED  HEREUNDER  PRIOR TO THE DATE OF  TERMINATION  PURSUANT TO THE
TERMS  HEREOF TO COME WITHIN  SECTION  365(n) OF THE U.S.  BANKRUPTCY  CODE AND,
NOTWITHSTANDING  THE  BANKRUPTCY  OR  INSOLVENCY  OF  LICENSOR OR  LICENSEE,  AS
APPLICABLE,  THIS AGREEMENT AND THE LICENSES GRANTED HEREIN SHALL REMAIN IN FULL
FORCE AND EFFECT SO LONG AS LICENSEE OR LICENSOR, AS APPLICABLE,  IS IN MATERIAL
COMPLIANCE WITH THE TERMS AND CONDITIONS HEREOF.

            o. Compliance with Export  Regulations.  Licensee shall at all times
comply with all export control statutes and regulations of the United States and
foreign  governments  in  effect  from  time  to  time,   including  the  Export
Administration  Regulations of the U.S.  Department of Commerce.  Licensee shall
not:  (i)  ship,   transfer  or  export  the  Licensed  Products  or  underlying
information or Technology or any Improvements  thereto into any country to which
the U.S.  has  embargoed  goods;  or (ii) let it be used by  anyone  on the U.S.
Treasury  Department's  list  of  Specially  Designated  Nationals  or the  U.S.
Commerce  Department's Table of Denial Orders. By using the Licensed Products or
any Improvements thereto, Licensee acknowledges the foregoing and represents and
warrants  that it is not under the control of a national or resident of any such
country or on any such list.

                            [SIGNATURE PAGE FOLLOWS]


                                       27
                                     -241-
<PAGE>



         IN WITNESS  HEREOF,  the parties hereto have executed this Agreement as
of the Effective Date.

                                         Photon Research Associates, Inc.


                                         By:/s/ James A. Myer
                                            ----------------------------
                                            James A. Myer
                                         Title: COB


                                         By:/s/ Sonya Kay Porth
                                            ----------------------------
                                            Sonya Kay Porth
                                         Title: Corporate Secretary/Treasurer


                                         EarthScan Network Inc.


                                         By:/s/ John Rasure
                                            ------------------------
                                            John Rasure
                                         Title: President


                                         By:/s/ Sonya Kay Porth
                                            -----------------------------
                                            Sonya Kay Porth
                                         Title: Corporate Secretary/Treasurer



                                       28
                                     -242-
<PAGE>

                                    EXHIBIT A

                        Description of Licensed Products

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
exhibit to the Securities and Exchange Commission upon request."

                                       29
                                     -243-
<PAGE>



                                    EXHIBIT B

                       Description of Third Party Software

Microsoft Windows NT Server 4.0 (Includes Internet Information Server 4.0)
Microsoft Windows SQL Server 7.0 with Internet Extension
Microsoft Windows Visual Studio 6.0
ESRI MapObjects 2.0 and Internet Map Server 2.0
Research Systems, Inc.'s Interactive Data Language (IDL) 5.2


                                       30
                                     -244-
<PAGE>


                                   Exhibit C

                Amended and Restated Certificate of Incorporation

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       31
                                     -245-
<PAGE>


                                   Exhibit D

                       Form of Opinion of Company Counsel

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       32
                                     -246-
<PAGE>


                                   Exhibit E

                             Stockholders Agreement

         THIS  STOCKHOLDERS  AGREEMENT (the  "Agreement")  is entered into as of
December 16, 1999 (the "Effective Date"), by and among EarthScan Network Inc., a
Delaware  corporation (the "Company"),  the persons set forth on the Schedule of
Preferred   Stockholders   attached   hereto  as   Exhibit  A  (the   "Preferred
Stockholders"),  the  persons set forth on the  Schedule of Common  Stockholders
attached hereto as Exhibit B (the "Founders"),  and Flemming, Lessard & Shields,
LLC ("Warrant Holder"). The Preferred Stockholders, the Founders and the Warrant
Holder are referred to herein as the "Investors."

                                    RECITALS

         WHEREAS,   concurrently   herewith   the  Company  and  the   Preferred
Stockholders are entering into a Series A Preferred Stock Purchase  Agreement of
even date herewith (the  "Preferred  Agreement"),  pursuant to which the Company
shall  sell,  and  the  Preferred  Stockholders  shall  acquire,  shares  of the
Company's Series A Preferred Stock.

         WHEREAS,  concurrently  herewith  the  Company  and  the  Founders  are
entering  into a Common  Stock  Purchase  Agreement of even date  herewith  (the
"Common Agreement"),  pursuant to which the Company shall sell, and the Founders
shall acquire,  shares of the Company's Common Stock. The shares of Common Stock
sold  pursuant  to the Common  Agreement  are  collectively  referred  to as the
"Founder Shares."

         WHEREAS,  concurrently  herewith the Company is granting to the Warrant
Holder  certain  five-year  warrants to purchase  1,500 shares of the  Company's
Common Stock ("the Warrants").

         WHEREAS, the Company, the Preferred Stockholders,  the Founders and the
Warrant  Holder  desire  certain  rights and are  willing to  undertake  certain
obligations with respect to the outstanding securities of the Company which they
own or may acquire, as set forth in this Agreement.

         NOW,  THEREFORE,  in consideration of the mutual promises and covenants
set forth herein, the parties hereto agree as follows:

                                   SECTION 1.

                        Restrictions on Transferability;

                               Registration Rights

         1.1 Certain Definitions. As used in this Agreement, the following terms
shall have the following respective meanings:

         "Affiliates"  shall  have  the  meaning  set  forth  in Rule 405 of the
Securities Act.

                                       33
                                     -247-
<PAGE>

         "Commission"  shall mean the Securities and Exchange  Commission or any
other federal agency at the time administering the Securities Act.

         "Common Stock" shall mean the Company's Common Stock, par value $0.0001
per share.

         "Common Stock Equivalents" shall mean all options ("Options") and stock
purchase rights ("Stock  Purchase  Rights")  received by participants  under the
Company's 1999 Stock Incentive Plan.

         "Conversion Shares" shall mean the Common Stock issued or issuable upon
conversion of the Series A Preferred Stock or upon exercise of the Warrants.

         "Exchange  Act"  shall mean the  Securities  Exchange  Act of 1934,  as
amended, or any similar successor federal statute, and the rules and regulations
thereunder, all as the same shall be in effect from time to time.

         "Holder" shall mean (i) any Investor holding Registrable Securities and
(ii) any person  holding  Registrable  Securities  to whom the rights under this
Agreement  have been  transferred  in accordance  with Section 1.14 hereof,  and
(iii) any holder of Common Stock Equivalents.

         "Initiating Holders" shall mean any holder of Registrable Securities or
transferees of holders of Registrable  Securities  under Section 1.14 hereof who
in the  aggregate  are  Holders  of not less  than  fifty  percent  (50%) of the
Registrable  Securities  of  Common  Stock  (including,   without  limiting  the
definition  of  Conversion  Shares,  shares which will be issued upon the future
conversion  of the  Series A  Preferred  Stock or upon  future  exercise  of the
Warrants).

         "Permitted  Transferee" means an Affiliate of any Investor or a Related
Party of any Investor.

         "Qualified  Public  Offering" shall mean a firmly  underwritten  public
offering of Common  Stock  registered  under the  Securities  Act,  other than a
registration  relating  solely  to  a  transaction  under  Rule  145  under  the
Securities Act (or any successor  thereto) or to an employee benefit plan of the
Company.

         The  terms  "register",  "registered"  and  "registration"  refer  to a
registration  effected  by  preparing  and filing a  registration  statement  in
compliance  with the  Securities  Act,  and the  declaration  or ordering of the
effectiveness of such registration statement.

         "Registrable  Common Stock" shall mean (i) the Common  Stock;  (ii) any
Common Stock or other  securities  issued or issuable with respect to the Common
Stock upon any stock split, stock dividend, recapitalization,  or similar event;
provided,   however,   (x)  the  Registrable  Common  Stock  shall  not  include
Registrable Securities, and (y) shares of Common Stock or other securities shall
only be treated as Registrable Common Stock if and so long as they have not been
(A)  sold  to  or  through  a  broker  or  dealer  or  underwriter  in a  public

                                       34
                                     -248-
<PAGE>

distribution  or a public  securities  transaction,  (B)  sold in a  transaction
exempt  from  the  registration  and  prospectus  delivery  requirements  of the
Securities Act under Section 4(1) thereof so that all transfer  restrictions and
restrictive  legends with respect  thereto are removed upon the  consummation of
such sale, (C) transferred in a transaction  pursuant to which the  registration
rights are not also  assigned in  accordance  with Section  1.14 hereof,  or (D)
become eligible for sale under Rule 144 of the Securities Act (or any similar or
successor rule).

         "Registrable Securities" shall mean (i) the Conversion Shares; (ii) the
Founder Shares; (iii) Common Stock issued pursuant to the exercise of Options or
Stock Purchase  Rights under the Company's 1999 Stock  Incentive  Plan; and (iv)
any Common  Stock of the  Company  issued or  issuable  in respect to the Common
Stock  referred to in clauses  (i),  (ii) and (iii) above by way of stock split,
stock dividend,  recapitalization,  or similar event;  provided,  however,  that
shares of Common Stock or other  securities shall only be treated as Registrable
Securities  if and so long as they have not been (A) sold to or through a broker
or  dealer  or  underwriter  in a public  distribution  or a  public  securities
transaction,  (B)  sold  in a  transaction  exempt  from  the  registration  and
prospectus  delivery  requirements  of the  Securities  Act under  Section  4(1)
thereof so that all transfer  restrictions and restrictive  legends with respect
thereto are removed upon the  consummation  of such sale,  (C)  transferred in a
transaction  pursuant to which the registration  rights are not also assigned in
accordance with Section 1.14 hereof,  or (D) become eligible for sale under Rule
144 of the Securities Act (or any similar or successor rule).

         "Registration Expenses" shall mean all expenses incurred by the Company
in  complying  with  Sections  1.5,  1.6  and  1.7  hereof,  including,  without
limitation, all registration,  qualification,  listing and filing fees, printing
expenses, escrow fees, fees and disbursements of counsel for the Company and one
special  counsel for the selling  Holders,  blue sky fees and expenses,  and the
expense of any special audits  incident to or required by any such  registration
(but excluding the compensation of regular  employees of the Company which shall
be paid in any event by the Company).

         "Related Party" means an individual's spouse, issue, sibling, parent or
other  member  of his or her  immediate  family or a trust  established  for the
benefit of such person(s) for estate planning purposes.

         "Restricted  Securities"  shall  mean  the  securities  of the  Company
required to bear the legend set forth in Section 1.3 hereof.

         "Securities Act" shall mean the Securities Act of 1933, as amended, and
the rules and regulations  promulgated thereunder or any similar federal statute
and the rules and  regulations  of the  Commission  thereunder,  all as the same
shall be in effect at the time.

         "Selling  Expenses"  shall  mean all  underwriting  discounts,  selling
commissions and stock transfer taxes applicable to the securities  registered by
the Holders, and all fees and disbursements of counsel for the Holders except as
provided under Registration Expenses.

                                       35
                                     -249-
<PAGE>

         "Series A Preferred Stock" shall mean Series A Preferred Stock, $0.0001
par value per share, issued to certain Investors pursuant to that certain Series
A Preferred Stock Purchase Agreement of even date herewith.

         "Shares" shall mean the Series A Preferred  Stock sold to the Preferred
Stockholders  pursuant  to the  Preferred  Agreement,  the Common  Stock sold to
Founders pursuant to the Founders Agreements and the Warrants.

         "Transfer" shall have the meaning set forth in Section 3.1 herein.

     1.2 Restrictions. Subject to the provisions of Sections 2.1 and 2.2 of this
Agreement,  neither the Shares nor the Conversion Shares may be sold,  assigned,
transferred  or pledged to any third party other than to a Permitted  Transferee
of such  Investor.  Each Investor will cause any proposed  purchaser,  assignee,
transferee  or  pledgee  of the  Shares or the  Conversion  Shares  held by such
Investor to assume the transferor's obligations under and agree to take and hold
such  securities  subject  to the  rights  and upon  the  conditions  and  other
provisions  specified  in this  Agreement,  and,  as  applicable,  the  Series A
Preferred Stock Purchase Agreement and the Common Stock Purchase Agreement.  The
provisions set forth in this Section 1.2 shall  terminate  immediately  prior to
the consummation of a Qualified Public Offering.

     1.3 Restrictive Legend. Each certificate representing (i) the Shares (other
than the Warrants),  (ii) the Conversion  Shares, and (iii) any other securities
issued in respect of the securities  referenced in clauses (i) and (ii) upon any
stock split, stock dividend, recapitalization,  merger, consolidation or similar
event, shall (unless otherwise permitted by the provisions of Section 1.4 below)
be  stamped  or  otherwise  imprinted  with a legend in the  following  form (in
addition to any legend required under applicable state securities laws):

     "THE  SHARES  REPRESENTED  BY  THIS  CERTIFICATE  HAVE  BEEN  ACQUIRED  FOR
     INVESTMENT AND HAVE NOT BEEN  REGISTERED  UNDER THE SECURITIES ACT OF 1933,
     AS  AMENDED.  SUCH  SHARES MAY NOT BE SOLD,  TRANSFERRED  OR PLEDGED IN THE
     ABSENCE OF SUCH  REGISTRATION  OR, IF THE COMPANY SO  REQUESTS,  UNLESS THE
     COMPANY  RECEIVES  AN  OPINION OF  COUNSEL  (WHICH  MAY BE COUNSEL  FOR THE
     COMPANY) STATING THAT SUCH SALE OR TRANSFER IS EXEMPT FROM THE REGISTRATION
     AND PROSPECTUS DELIVERY REQUIREMENTS OF SAID ACT."

     "THE SHARES  REPRESENTED BY THIS  CERTIFICATE  MAY BE  TRANSFERRED  ONLY IN
     ACCORDANCE  WITH THE TERMS OF AN  AGREEMENT  BETWEEN  THE  COMPANY  AND THE
     SHAREHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY."

     Each  Warrant  shall bear the legends set forth  above,  but  modified,  as
appropriate,  to  replace  the word  "SHARES"  with the  word  "WARRANTS".  Each
Investor  consents to the Company's  making a notation on its records and giving
instructions  to any transfer  agent of the  Restricted  Securities  in order to

                                       36
                                     -250-
<PAGE>

implement the restrictions on transfer established in this Section 1.

     1.4  Notice  of  Proposed   Transfers.   The  holder  of  each  certificate
representing  Restricted Securities,  by acceptance thereof, agrees to comply in
all respects with the  provisions of this Section 1. Prior to any proposed sale,
assignment,  transfer or pledge of any Restricted Securities, unless there is in
effect a registration  statement  under the Securities Act covering the proposed
transfer,  the holder  thereof shall give written  notice to the Company of such
holder's  intention to effect such transfer,  sale,  assignment or pledge.  Each
such  notice  shall  describe  the  manner  and  circumstances  of the  proposed
transfer,  sale, assignment or pledge in sufficient detail to permit the Company
to  ascertain  transferor's  compliance  with  this  Section  1,  and  shall  be
accompanied  at such holder's  expense by either (i) a written  opinion of legal
counsel who shall, and whose legal opinion shall, be reasonably  satisfactory to
the Company,  addressed to the Company, to the effect that the proposed transfer
of the Restricted  Securities  may be effected  without  registration  under the
Securities  Act, or (ii) a "no action"  letter from the Commission to the effect
that the transfer of such securities  without  registration will not result in a
recommendation  by the staff of the Commission that action be taken with respect
thereto, or (iii) any other evidence  reasonably  satisfactory to counsel to the
Company, whereupon the holder of such Restricted Securities shall be entitled to
transfer such  Restricted  Securities in accordance with the terms of the notice
delivered  by the holder to the  Company and the terms of this  Agreement.  Each
certificate  evidencing the Restricted Securities  transferred as above provided
shall  bear,  except if such  transfer is made  pursuant to Rule 144,  the first
paragraph of the restrictive legend set forth in Section 1.3 above,  except that
such certificate  shall not bear such first paragraph of the restrictive  legend
if, in the opinion of counsel for such  holder and the  Company,  such legend is
not  required  in order to  establish  compliance  with  any  provisions  of the
Securities Act. Until the  consummation  of a Qualified  Public  Offering,  each
certificate evidencing Restricted Securities transferred as above provided shall
bear the second  paragraph  of the  restrictive  legend set forth in Section 1.3
above.

     1.5 Requested Registration.

         (a)  Request  for  Registration.  If the  Company  shall  receive  from
Initiating  Holders a written request that the Company effect any  registration,
qualification or compliance, the Company will:

            (i)  promptly  give  written  notice of the  proposed  registration,
qualification or compliance to all other Holders; and

            (ii) as soon as  practicable,  and in any event within 120 days, use
its best  efforts  to effect  such  registration,  qualification  or  compliance
(including,  without  limitation,  the  execution  of  an  undertaking  to  file
post-effective  amendments,  appropriate qualification under applicable blue sky
or other  state  securities  laws and  appropriate  compliance  with  applicable
regulations   issued  under  the  Securities  Act  and  any  other  governmental
requirements  or  regulations)  as may be so  requested  and as would  permit or
facilitate the sale and  distribution of all or such portion of such Registrable
Securities as are  specified in such request,  together with all or such portion

                                       37
                                     -251-
<PAGE>

of the  Registrable  Securities of any Holder or Holders joining in such request
as are specified in a written request received by the Company within thirty (30)
days after receipt of such written notice from the Company;  provided,  however,
that the Company  shall not be  obligated  to take any action to effect any such
registration, qualification or compliance pursuant to this Section 1.5:

                  (1) In any particular  jurisdiction in which the Company would
be required to execute a general consent to service of process in effecting such
registration,  qualification or compliance unless the Company is already subject
to service in such  jurisdiction and except as may be required by the Securities
Act;

                  (2) Prior to six  months  following  the  effective  date of a
Qualified Public Offering;

                  (3) During the period  starting  with the date sixty (60) days
prior to the Company's  estimated date of filing of, and ending the date six (6)
months immediately  following the effective date of, any registration  statement
pertaining to securities of the Company (other than a registration of securities
in a Rule 145 transaction or with respect to an employee benefit plan), provided
that the Company is actively  employing in good faith all reasonable  efforts to
cause such  registration  statement to become  effective  and that the Company's
estimate  of the date of  filing  such  registration  statement  is made in good
faith;

                  (4) After the Company has effected two (2) such  registrations
pursuant to this subparagraph  1.5(a),  and each of such  registrations has been
declared or ordered  effective and the  securities  offered  pursuant to each of
such registrations have been sold; or

                  (5)  If  the  Company   shall   furnish  to  such   Holders  a
certificate,  signed by the President or Chief Executive Officer of the Company,
stating  that in the good  faith  judgment  of the Board of  Directors  it would
adversely  affect or would  require the premature  disclosure of any  financing,
acquisition,  disposition,  or other corporate transaction, or would require the
Company to make public  disclosure  of  information  which would have a material
adverse  effect on the Company,  then the  Company's  obligation to use its best
efforts to register,  qualify or comply under this Section 1.5 shall be deferred
for a period not to exceed  one-hundred  and twenty  (120) days from the date of
receipt of written request from the Initiating Holders; provided,  however, that
the Company may not utilize  this right more than twice in any twelve (12) month
period.

         Subject to the  foregoing  clauses (1) through (5),  the Company  shall
file a registration  statement covering the Registrable  Securities so requested
to be registered as soon as practicable after receipt of the request or requests
of the Initiating Holders.

         (b) Underwriting.  In the event that a registration pursuant to Section
1.5 is for a registered public offering  involving an underwriting,  the Company
shall so advise  the  Holders as part of the notice  given  pursuant  to Section
1.5(a)(i). The right of any Holder to registration pursuant to Section 1.5 shall
be conditioned upon such Holder's participation in the underwriting arrangements
required by this  Section 1.5 and the  inclusion  of such  Holder's  Registrable
Securities in the underwriting,  to the extent requested, to the extent provided
herein.

                                       38
                                     -252-
<PAGE>

         The Company shall  (together  with all Holders  proposing to distribute
their  securities  through  such  underwriting)   enter  into  and  perform  its
obligations under an underwriting  agreement in customary form with the managing
underwriter  selected  for such  underwriting  by a majority  in interest of the
Initiating Holders (which managing underwriter shall be reasonably acceptable to
the Company).  Notwithstanding  any other  provision of this Section 1.5, if the
managing  underwriter  advises the Initiating  Holders in writing that marketing
factors  require a limitation of the number of shares to be  underwritten,  then
the Company shall so advise all Holders of Registrable Securities and the number
of shares of Registrable Securities that may be included in the registration and
underwriting  shall be allocated  among all Holders  thereof in  proportion,  as
nearly as practicable,  to the respective amounts of Registrable Securities held
by such Holders at the time of filing the registration statement. No Registrable
Securities  excluded  from  the  underwriting  by  reason  of the  underwriter's
marketing  limitation shall be included in such registration.  To facilitate the
allocation of shares in accordance with the above provisions, the Company or the
underwriters  may round the  number of  shares  allocated  to any  Holder to the
nearest 100 shares.

         If any Holder of Registrable Securities disapproves of the terms of the
underwriting,  such person may elect to withdraw  therefrom by written notice to
the  Company,   the  managing   underwriter  and  the  Initiating  Holders.  The
Registrable  Securities  and/or  other  securities  so  withdrawn  shall also be
withdrawn  from  registration,  and such  Registrable  Securities  shall  not be
transferred  in a public  distribution  during the period  specified  in Section
1.15.

     1.6 Company Registration

         (a) Notice of Registration.  If at any time the Company shall determine
to register any of its securities,  either for its own account or the account of
a security  holder or holders other than (i) a registration  relating  solely to
employee  benefit  plans,  (ii) a  registration  relating  solely  to a Rule 145
transaction,  or (iii) a  registration  on any  registration  form that does not
permit secondary sales, the Company will:

            (i) promptly give to each Holder written notice thereof; and

            (ii)  include in such  registration  (and any related  qualification
under  blue sky  laws or other  compliance),  and in any  underwriting  involved
therein,  all the  Registrable  Securities  specified  in a written  request  or
requests made within fifteen (15) days after receipt of such written notice from
the Company by any Holder,  but only to the extent that such  inclusion will not
diminish the number of  securities  included by the Company or by holders of the
Company's securities who have demanded such registration.

         (b) Underwriting. If the registration of which the Company gives notice
is for a registered public offering involving an underwriting, the Company shall
so advise the Holders as a part of the written  notice given pursuant to Section
1.6(a)(i).  In such event,  the right of any Holder to registration  pursuant to
Section  1.6 shall be  conditioned  upon  such  Holder's  participation  in such

                                       39
                                     -253-
<PAGE>

underwriting and the inclusion of Registrable  Securities in the underwriting to
the extent provided herein. All Holders proposing to distribute their securities
through such underwriting shall (together with the Company and the other holders
distributing their securities through such underwriting)  enter into and perform
its  obligations  under an  underwriting  agreement in  customary  form with the
managing  underwriter  selected for such  underwriting by the Company (or by the
holders  who  have  demanded  such  registration).   Notwithstanding  any  other
provision  of this  Section 1.6, if the  managing  underwriter  determines  that
marketing   factors  require  a  limitation  of  the  number  of  shares  to  be
underwritten,  the managing  underwriter may exclude all Registrable  Securities
from,  or limit the  number of  Registrable  Securities  to be  included  in the
registration  and  underwriting on a pro rata basis based on the total number of
securities (including,  without limitation,  Registrable Securities) entitled to
registration  pursuant  to  registration  rights  granted  to the  participating
Holders by the Company.  To  facilitate  the  allocation of shares in accordance
with the above provisions,  the Company or the underwriters may round the number
of shares allocated to any Holder or other holder to the nearest 100 shares.  If
any Holder or other holder disapproves of the terms of any such underwriting, he
or she may elect to withdraw  therefrom by written notice to the Company and the
managing   underwriter.   Any   securities   excluded  or  withdrawn  from  such
underwriting  shall be  withdrawn  from  such  registration,  and  shall  not be
transferred  in a public  distribution  during the period  specified  in Section
1.15.

         (c) Right to Terminate  Registration.  The Company shall have the right
to terminate or withdraw any registration initiated by it under this Section 1.6
prior to the effectiveness of such  registration,  whether or not any Holder has
elected to include securities in such registration.

     1.7 Registration on Form S-3

         (a) The Company  shall  register  (whether or not required by law to do
so) its Common Stock under the Exchange Act in accordance with the provisions of
the Exchange Act following the effective date of the first  registration  of any
securities  of the Company on Form S-1 or any  comparable  or successor  form or
forms, and the Company shall use its best efforts to qualify for registration on
Form S-3 or any comparable or successor form at such time.

         (b) If any Holder or Holders of not less than twenty  percent  (20%) of
the  Registrable  Securities then  outstanding  requests that the Company file a
registration  statement  on Form S-3 (or any  successor  form to Form S-3) for a
public  offering  of  shares  of  the  Registrable  Securities,  the  reasonably
anticipated  aggregate  price  to the  public  of  which,  net  of  underwriting
discounts  and  commissions,  would  exceed  $1,000,000,  and the  Company  is a
registrant  entitled to use Form S-3 to register the Registrable  Securities for
such an  offering,  the  Company  shall  use its  best  efforts  to  cause  such
Registrable  Securities  to be  registered  for the  offering on such form.  The
Company will (i) promptly give written  notice of the proposed  registration  to
all other  Holders,  and (ii) as soon as  practicable,  use its best  efforts to

                                       40
                                     -254-
<PAGE>

effect such registration  (including,  without  limitation,  the execution of an
undertaking to file post-effective  amendments,  appropriate qualification under
applicable blue sky or other state  securities  laws and appropriate  compliance
with  applicable  regulations  issued  under  the  Securities  Act and any other
governmental  requirements  or  regulations) as may be so requested and as would
permit or facilitate  the sale and  distribution  of all or such portion of such
Registrable  Securities as are  specified in such request,  together with all or
such portion of the  Registrable  Securities of any Holder or Holders joining in
such  request as are  specified  in a written  request  received  by the Company
within  thirty (30) days after  receipt of the  written  notice from the Company
referred to in the preceding  clause (i). The substantive  provisions of Section
1.5(b) shall be applicable  to each  registration  initiated  under this Section
1.7.

         (c) Notwithstanding  the foregoing,  the Company shall not be obligated
to  take  any  action  pursuant  to  this  Section  1.7:  (i) in any  particular
jurisdiction in which the Company would be required to execute a general consent
to  service  of  process  in  effecting  such  registration,   qualification  or
compliance unless the Company is already subject to service in such jurisdiction
and except as may be  required  by the  Securities  Act;  (ii) during the period
starting with the date sixty (60) days prior to the filing of, and ending on the
date six (6) months following the effective date of, any registration  statement
(other  than with  respect to a  registration  statement  relating to a Rule 145
transaction,  an offering solely to employees or any other registration which is
not appropriate for the registration of Registrable  Securities),  provided that
the Company is actively  employing in good faith all reasonable efforts to cause
such registration  statement to become effective;  or (iii) if the Company shall
furnish to such Holder a certificate  signed by the President or Chief Executive
Officer of the Company  stating that, in the good faith judgment of the Board of
Directors,  it would adversely affect or would require the premature  disclosure
of any financing,  acquisition,  disposition or other corporate transaction,  or
would require the Company to make public  disclosure of information  which would
have a material adverse effect on the Company,  then the Company's obligation to
use its best efforts to file a  registration  statement  shall be deferred for a
period  not to exceed one  hundred  twenty  (120)  days from the  receipt of the
request to file such registration by such Holder or Holders; provided,  however,
that the Company  may not utilize  this right more than twice in any twelve (12)
month period.

     1.8 Limitations on Subsequent  Registration Rights. From and after the date
hereof,  the Company shall not enter into any  agreement  granting any holder or
prospective  holder of any  securities of the Company  registration  rights with
respect to such securities  unless (i) such new registration  rights,  including
standoff obligations, are on a pari passu basis with those rights of the Holders
hereunder; or (ii) such new registration rights, including standoff obligations,
are subordinate to the registration rights granted Holders hereunder.

     1.9  Expenses  of  Registration.  All  Registration  Expenses  incurred  in
connection with any registration pursuant to Sections 1.5 and 1.6 shall be borne
by the  Company,  provided  that the  Company  shall not be  required to pay the
Registration  Expenses of any registration  proceeding begun pursuant to Section
1.5,  the request of which has been  subsequently  withdrawn  by the  Initiating
Holders.  In such case, (i) the Holders of  Registrable  Securities to have been
registered  shall bear all such  Registration  Expenses pro rata on the basis of
the  number of shares to have been  registered,  and (ii) the  Company  shall be
deemed not to have effected a registration  pursuant to  subparagraph  1.5(a) of
this Agreement.  Notwithstanding  the foregoing,  however, if at the time of the
withdrawal,  the  Holders  have  learned  of a  material  adverse  change in the
condition,  business or  prospects of the Company from that known to the Holders
at the time of their request,  of which the Company had knowledge at the time of
the  request,  then  the  Holders  shall  not be  required  to pay  any of  said
Registration  Expenses.  In such case,  the Company  shall be deemed not to have
effected a  registration  pursuant  to  subparagraph  1.5(a) of this  Agreement.

                                       41
                                     -255-
<PAGE>

Unless otherwise stated, all Selling Expenses relating to securities  registered
on behalf of the Holders and all  Registration  Expenses  incurred in connection
with any  registration  pursuant to Section 1.7 shall be borne by the Holders of
the registered securities included in such registration pro rata on the basis of
the number of shares so registered.

     1.10   Registration   Procedures.   In  the  case  of  each   registration,
qualification or compliance  effected by the Company pursuant to this Section 1,
the Company  will keep each Holder  advised in writing as to the  initiation  of
each registration, qualification and compliance and as to the completion thereof
and, at its expense, the Company will:

         (a) Prepare and file with the Commission a registration  statement with
respect to such  securities and use its best efforts to cause such  registration
statement to become and remain  effective for at least ninety (90) days or until
the  distribution  described in the  registration  statement has been completed;
provided,  however,  that  in  the  case  of  any  registration  of  Registrable
Securities  on Form S-3 which are  intended  to be  offered on a  continuous  or
delayed  basis,  such  period  shall  be  extended,  if  necessary,  to keep the
registration statement effective until all such Registrable Securities are sold,
provided  that if Rule 415,  or any  successor  rule under the  Securities  Act,
permits an offering on a continuous or delayed basis,  and provided further that
if applicable  rules under the Securities Act governing the obligation to file a
post-effective  amendment permit,  in lieu of filing a post-effective  amendment
which (y) includes any prospectus required by Section 10(a)(3) of the Securities
Act or (z)  reflects  facts or events  representing  a material  or  fundamental
change  in  the  information  set  forth  in  the  registration  statement,  the
incorporation by reference of information required to be included in (y) and (z)
above shall be contained  in periodic  reports  filed  pursuant to Section 13 or
15(d) of the Exchange Act in the registration statement;

         (b) Furnish to the Holders  participating  in such  registration and to
the underwriters of the securities  being  registered such reasonable  number of
copies of the registration statement,  preliminary prospectus,  final prospectus
and such other documents as such underwriters may reasonably request in order to
facilitate the public offering of such securities;

         (c)  Prepare  and  file  with  the  Commission   such   amendments  and
supplements to such registration statement and the prospectus used in connection
with  such  registration  statement  as may be  necessary  to  comply  with  the
provisions  of  the  Securities  Act  with  respect  to the  disposition  of all
securities covered by such registration statement;

         (d)  Notify  each  seller of  Registrable  Securities  covered  by such
registration  statement  at any  time  when a  prospectus  relating  thereto  is
required to be delivered  under the Securities Act of the happening of any event
as a result of which the prospectus included in such registration  statement, as
then in effect,  includes  an untrue  statement  of a material  fact or omits to

                                       42
                                     -256-
<PAGE>

state a material  fact  required to be stated  therein or  necessary to make the
statements   therein  not   misleading   or  incomplete  in  the  light  of  the
circumstances then existing,  and at the request of any such seller, prepare and
furnish to such seller a reasonable  number of copies of a  supplement  to or an
amendment  of  such  prospectus  as may be  necessary  so  that,  as  thereafter
delivered to the purchaser of such shares,  such prospectus shall not include an
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements  therein not misleading or
incomplete in the light of the circumstances then existing;

         (e) Use its best efforts to register and qualify the securities covered
by such  registration  statement under such other securities or Blue Sky laws of
such  jurisdictions  as shall be reasonably  requested by the Holders,  provided
that the Company shall not be required in connection therewith or as a condition
thereto  to qualify to do  business  or to file a general  consent to service of
process in any such states or jurisdictions;

         (f)  Cause  all  such  Registrable  Securities  to be  listed  on  each
securities  exchange on which similar  securities issued by the Company are then
listed;

         (g)  Provide  a  transfer  agent  and  registrar  for  all  Registrable
Securities and a CUSIP number for all such Registrable Securities,  in each case
not later than the effective date of such registration;

         (h) Otherwise use its best efforts to comply with the applicable  rules
and regulations promulgated by the Securities and Exchange Commission;

         (i) If and  to the  extent  obtained  from  the  Company's  independent
accountants,  provide to each Holder a copy of any  "comfort  letter"  regarding
such registration statement and prospectus; and

         (j) Make available for inspection by any Holder  participating  in such
registration,  any underwriter participating in any disposition pursuant to such
registration,  and any  attorney  or  accountant  retained by any such Holder or
underwriter,  all financial and other records, pertinent corporate documents and
properties  of the Company,  and cause the  Company's  officers and directors to
supply all  information  reasonably  requested by any such Holder,  underwriter,
attorney or accountant in connection with such registration statement; provided,
however,  that such Holder,  underwriter,  attorney or accountant shall agree to
hold in confidence and trust all information so provided.

     1.11 Indemnification

         (a) The Company will  indemnify  each Holder,  each of its officers and
directors  and  partners,  and each person  controlling  such Holder  within the
meaning of Section 15 of the Securities Act, with respect to which registration,
qualification  or compliance  has been effected  pursuant to this Section 1, and
each  underwriter,  if any, and each person who controls any underwriter  within
the meaning of Section 15 of the Securities Act,  against all expenses,  claims,
losses, damages or liabilities (or actions in respect thereof) arising out of or
based on any untrue  statement (or alleged untrue  statement) of a material fact

                                       43
                                     -257-
<PAGE>

contained in any registration statement,  prospectus, offering circular or other
document,  or  any  amendment  or  supplement  thereto,  incident  to  any  such
registration,  qualification or compliance, or based on any omission (or alleged
omission)  to state  therein a material  fact  required to be stated  therein or
necessary to make the statements therein, in light of the circumstances in which
they were made, not  misleading,  or any violation by the Company of any rule or
regulation  promulgated  under the  Securities  Act applicable to the Company in
connection  with any such  registration,  qualification  or compliance,  and the
Company will reimburse each such Holder, each of its officers and directors, and
each person  controlling such Holder,  each such underwriter and each person who
controls any such underwriter,  for any legal and any other expenses  reasonably
incurred in  connection  with  investigating,  preparing or  defending  any such
claim,  loss,  damage,  liability  or action,  as such  expenses  are  incurred,
provided that the Company will not be liable in any such case to the extent that
any such claim, loss, damage,  liability or expense arises out of or is based on
any untrue statement or omission or alleged untrue  statement or omission,  made
in reliance upon and in  conformity  with written  information  furnished to the
Company by an  instrument  duly executed by such Holder,  controlling  person or
underwriter and stated to be specifically for use therein.

         (b) Each Holder will, if Registrable Securities held by such Holder are
included  in the  securities  as to which such  registration,  qualification  or
compliance is being effected,  indemnify the Company,  each of its directors and
officers, each underwriter,  if any, of the Company's securities covered by such
a  registration  statement,  each  person  who  controls  the  Company  or  such
underwriter  within the meaning of Section 15 of the  Securities  Act,  and each
other  such  Holder,  each  of  its  officers  and  directors  and  each  person
controlling  such Holder within the meaning of Section 15 of the Securities Act,
against  all claims,  losses,  damages  and  liabilities  (or actions in respect
thereof)  arising out of or based on any untrue  statement  (or  alleged  untrue
statement)  of a material  fact  contained in any such  registration  statement,
prospectus,  offering  circular or other  document,  or any omission (or alleged
omission)  to state  therein a material  fact  required to be stated  therein or
necessary to make the statements therein not misleading,  and will reimburse the
Company,  such Holders,  such  directors,  officers,  persons,  underwriters  or
control  persons  for any legal or any other  expenses  reasonably  incurred  in
connection  with  investigating  or  defending  any such  claim,  loss,  damage,
liability or action, as such expenses are incurred,  in each case to the extent,
but only to the extent, that such untrue statement (or alleged untrue statement)
or  omission  (or  alleged  omission)  is made in such  registration  statement,
prospectus,  offering  circular  or  other  document  in  reliance  upon  and in
conformity  with written  information  furnished to the Company by an instrument
duly  executed by such  Holder and stated to be  specifically  for use  therein;
provided that in no event shall any indemnity  under this  subparagraph  1.11(b)
exceed the net  proceeds  received  by such  Holder in such  registration.  Each
Holder under this subparagraph 1.11(b) shall be severally, not jointly, liable.

         (c) Each party entitled to indemnification under this Section 1.11 (the
"Indemnified  Party")  shall  give  notice  to the  party  required  to  provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall

                                       44
                                     -258-
<PAGE>

permit the  Indemnifying  Party to assume  the  defense of any such claim or any
litigation  resulting  therefrom,  provided  that  counsel for the  Indemnifying
Party,  who shall  conduct  the  defense of such claim or  litigation,  shall be
approved by the  Indemnified  Party (whose  approval shall not  unreasonably  be
withheld),  and the  Indemnified  Party may  participate in such defense at such
party's expense; provided, however, that an Indemnified Party (together with all
other  Indemnified  Parties  which may be  represented  without  conflict by one
counsel) shall have the right to retain one separate counsel,  with the fees and
expenses  to be  paid  by the  Indemnifying  Party,  if  representation  of such
Indemnified  Party by the counsel  retained by the  Indemnifying  Party would be
inappropriate  due to actual  or  potential  differing  interests  between  such
Indemnified  Party and any  other  party  represented  by such  counsel  in such
proceeding.  The  failure of any  Indemnified  Party to give  notice as provided
herein shall not relieve the  Indemnifying  Party of its obligations  under this
Section 1 unless the failure to give such notice is materially prejudicial to an
Indemnifying  Party's ability to defend such action.  No Indemnifying  Party, in
the defense of any such claim or litigation,  shall,  except with the consent of
each  Indemnified  Party,  consent  to entry of any  judgment  or enter into any
settlement which does not include as an unconditional term thereof the giving by
the  claimant  or  plaintiff  to such  Indemnified  Party of a release  from all
liability in respect to such claim or litigation.

         (d) If the indemnification provided for in this Section 1.11 is held by
a court of competent jurisdiction to be unavailable to an Indemnified Party with
respect to any claim,  loss,  damage,  liability or action  referred to therein,
then the  Indemnifying  Party, in lieu of indemnifying  such  Indemnified  Party
hereunder,  shall  contribute to the amount paid or payable by such  Indemnified
Party as a result  of such  claim,  loss,  damage,  liability  or action in such
proportion as is appropriate  to reflect the relative fault of the  Indemnifying
Party on the one hand and the Indemnified  party on the other in connection with
the actions that resulted in such claims, loss, damage,  liability or action, as
well as any other relevant equitable  considerations.  The relative fault of the
Indemnifying Party and of the Indemnified Party shall be determined by reference
to,  among other  things,  whether the untrue or alleged  untrue  statement of a
material  fact or the omission to state a material  fact related to  information
supplied by the Indemnifying  Party or by the Indemnified Party and the parties'
relative intent, knowledge,  access to information and opportunity to correct or
prevent such  statement or omission.  The Company and the Holders  agree that it
would not be just and equitable if contribution pursuant to this Section 1.11(d)
were  based  solely  upon the  number of  entities  from whom  contribution  was
requested  or by any other method of  allocation  which does not take account of
the equitable considerations referred to above in this Section 1.11(d).

         (e) The amount paid or payable by an  Indemnified  Party as a result of
the losses,  claims,  damages and liabilities  referred to above in this Section
1.11 shall be deemed to include any legal or other expenses  reasonably incurred
by such Indemnified Party in connection with investigating or defending any such
action  or  claim,   subject  to  the   provisions   of  Section   1.11  hereof.
Notwithstanding the provisions of this Section 1.11, no Holder shall be required
to contribute any amount or make any other  payments under this Agreement  which
in the aggregate  exceed the net proceeds (after selling  expenses)  received by
such  Holder.  No person  guilty of  fraudulent  misrepresentation  (within  the
meaning of the Securities Act) shall be entitled to contribution from any person
who was not guilty of such fraudulent misrepresentation.

                                       45
                                     -259-
<PAGE>

     1.12 Information by Holder. The Holder or Holders of Registrable Securities
included  in any  registration  shall  furnish to the Company  such  information
regarding such Holder or Holders,  the  Registrable  Securities held by them and
the  distribution  proposed by such Holder or Holders as the Company may request
in  writing  and as shall  be  required  in  connection  with any  registration,
qualification or compliance referred to in this Section 1.

     1.13 Rule 144  Reporting.  With a view to making  available the benefits of
certain rules and regulations of the Commission which may at any time permit the
sale of the Restricted Securities to the public without registration, after such
time as a public market exists for the Common Stock of the Company,  the Company
agrees to use its best efforts to:

         (a) Make and keep  public  information  available,  as those  terms are
understood and defined in Rule 144 under the Securities  Act, at all times after
the  effective  date  that  the  Company   becomes   subject  to  the  reporting
requirements of the Securities Act or the Exchange Act;

         (b) File with the  Commission  in a timely manner all reports and other
documents  required of the Company under the Securities Act and the Exchange Act
(at any time after it has become subject to such reporting requirements); and

         (c) So long as a Holder owns any Restricted  Securities,  to furnish to
the Holder  forthwith upon request a written  statement by the Company as to its
compliance  with the reporting  requirements of said Rule 144 (at any time after
ninety (90) days after the effective  date of the first  registration  statement
filed by the Company for an offering of its  securities to the general  public),
and of the  Securities Act and the Exchange Act (at any time after it has become
subject to such  reporting  requirements),  a copy of the most recent  annual or
quarterly  report of the Company,  and such other  reports and  documents of the
Company and other  information in the possession of or reasonably  obtainable by
the Company as a Holder may reasonably request in availing itself of any rule or
regulation  of the  Commission  allowing  a Holder  to sell any such  securities
without registration.

     1.14 Transfer of  Registration  Rights.  The rights to cause the Company to
register  securities granted to any party hereto under Sections 1.5, 1.6 and 1.7
may be assigned to a transferee or assignee reasonably acceptable to the Company
in connection with any transfer or assignment of Registrable  Securities by such
party  (together  with any  Affiliate);  provided  that (a)  such  transfer  may
otherwise be effected in accordance with applicable  securities laws, (b) notice
of such assignment is given to the Company and the Company has given its consent
in writing to such transfer as provided above in this Section 1.14, and (c) such
transferee or assignee is a Permitted Transferee.

     1.15  Standoff  Agreement.  Each  Holder  agrees  in  connection  with  any
registration  of  the  Company's   securities  (other  than  a  registration  of
securities  in a Rule 145  transaction  or with  respect to an employee  benefit
plan) that, upon request of the underwriters  managing any underwritten offering
of the Company's  securities,  not to sell, make any short sale of, loan, pledge
or otherwise  hypothecate or encumber,  grant any option for the purchase of, or
otherwise  dispose of any  Registrable  Securities or  Registrable  Common Stock
(other  than those  included  in the  registration)  without  the prior  written

                                       46
                                     -260-
<PAGE>

consent of such  underwriters,  as the case may be, for such period of time (not
to  exceed  one  hundred  eighty  (180)  days  from the  effective  date of such
registration  in the case of a  registration  for the Company's  initial  public
offering and ninety (90) days from the effective  date of such  registration  in
the  case  of  other  registrations)  as  may  be  requested  by  such  managing
underwriters.

     1.16  Termination of Rights.  The rights of any particular  Holder to cause
the Company to register  Registrable  Securities under Sections 1.5, 1.6 and 1.7
shall terminate with respect to such Registrable Securities owned by such Holder
on the date such  securities  become  eligible  for sale  under  Rule 144 of the
Securities Act (or any similar or successor rule).

     1.17 Additional Equity Securities.  If the Company issues additional equity
securities  in the future,  the Company and the parties  hereto  shall cause any
person or entity who acquires such  securities  to become an Investor  hereunder
and such holder and the Company shall execute a  counterpart  of this  Agreement
and an amendment  adding such  holder's  name hereto shall be a condition of any
issuance of such additional securities.  The covenants set forth in this Section
1.17 shall terminate  immediately  prior to the consummation by the Company of a
qualified Public Offering.

                                   SECTION 2.

                     TAG ALONG RIGHT; RIGHTS TO COMPEL SALE

     2.1 Tag Along.


         (a) At  least  20 days  prior  to any  proposed  transfer  (other  than
pursuant to a public sale) of an  aggregate  of at least 20% of the  outstanding
Common  Stock  (assuming  the  exercise  of all  options  and  warrants  and the
conversion of all  convertible  securities)  or more of the  outstanding  Common
Stock in a transaction or series of  transactions to one or more bona fide third
parties  and,  for so long as they  continue to own shares of Series A Preferred
Stock (or Common Stock issued upon conversion  thereof),  with the prior written
consent  of each of DTN and  PRA,  in  their  sole and  absolute  discretion  (a
"Transfer"), by one or more Investors making such a Transfer (the "Transferor"),
the Transferor  shall give or cause to be given a written notice (the "Tag Along
Notice") to the Company  and the other  Investors  (which may be included in the
Notice of Proposed Transfer delivered pursuant to section 1.4);

         (b) Each Tag Along Notice shall  specify:  (i) the name of the proposed
transferee,  (ii) the number of shares of Preferred  Stock or Common Stock to be
transferred  and (iii) the  price  per  share and all other  material  terms and
conditions  of the offer.  Each  Investor may  participate  in the  contemplated
transfer described in the Tag Along Notice on a pro rata basis at the same price
per Share and on the same terms by delivering  written to the Transferor  within
15 days after  delivery of the Tag Along  Notice.  The failure of an Investor to
provide the selling  Investor  with notice  within such 15-day  period  shall be
deemed for all purposes of this Agreement to be an irrevocable  election by such
Investor  not to  participate  in the  Transfer.  If any Investor has elected to
participate  in such  Transfer,  he or she may sell in the Transfer (at the same
price and on the same terms), a number of Shares equal to the product of (i) the

                                       47
                                     -261-
<PAGE>

quotient  determined  by dividing  the  percentage  of the  Corporation's  total
outstanding  shares  which  are  owned  by such  participating  Investor  by the
percentage of the Corporation's  total outstanding shares which are owned by the
Transferor  and the  participating  Investors  participating  in such sale (as a
group) and (ii) the number of Shares to be sold in the contemplated Transfer.

         (c) The Transferor  shall use its reasonable best efforts to obtain the
agreement of the prospective transferee(s) to the participation by the Investors
in any contemplated  Transfer,  and the Transferor shall not transfer any of its
Shares to any prospective transferee if such prospective  transferee(s) declines
to allow the participation by the Investors.  Each Investor  transferring Shares
pursuant  to this  section  2.1 shall be  obligated  to join on a pro rata basis
(based  on  the  number  of  Shares  to  sold  to  the   transferee(s))  in  any
indemnification  or other  obligations that the Transferor  reasonably agrees to
provide in connection with such Transfer (other than any such  obligations  that
relate  specifically  to a  particular  Investor  such as  indemnification  with
respect to  representations  and warranties given by an Investor  regarding such
Investor's title to and ownership of shares,  provided that no Investor shall be
obligated  in  connection  with  such  Transfer  to agree to  indemnify  or hold
harmless  the  transferees  with  respect to an amount in excess of the net cash
proceeds paid to such Investor in connection with such Transfer).

         (d) All reasonable  costs and expenses  incurred in connection with any
Transfer  made pursuant to Section 2.1,  including  all cost and  disbursements,
finders'  fees or  brokerage  commissions  and the fees and  disbursements  of a
single  counsel   representing  all  shares  to  be  transferred  in  connection
therewith,   shall  be  allocated  pro  rata  between  the  Transferor  and  the
participating  Investors  based  on  the  aggregate  proceeds  received  by  the
Transferor and the participating Investors in the Transfer.

         (e) The rights and obligations of the parties set forth in this Section
2.1 shall terminate  immediately  prior to the  consummation by the Company of a
Qualified Public Offering.

     2.2 Rights to Compel Sale.

         (a) If one or more  Investors  propose  to sell all or any  portion  of
their Shares in any transaction or any series of transactions in which Shares in
an  aggregate  amount  of at least  51% of the  outstanding  Common  Stock (on a
fully-diluted  basis assuming  exercise of outstanding  options and warrants and
conversion of convertible securities) will be sold to a third party, and, for so
long as they  continue to own shares of Series A  Preferred  Stock (or shares of
Common Stock issued upon conversion thereof),  with the prior written consent of
each of DTN and  PRA,  in  their  sole  and  absolute  discretion,  the  selling
Investor(s)  may  compel  all other  Investors  to sell their Pro Rata Share (as
defined  below) of the  aggregate  number of Shares owned by such  Investor (the
"Seller  Shares") to such third party for the same per Share  consideration  and
otherwise on the terms and conditions provided in this Section 2.2.

         (b) The selling  Investor(s)  shall send written notice of the exercise
of their rights pursuant to this Section 2.2 to each of the remaining  Investors
(the "Drag Along  Notice"),  setting  forth the  percentage  of the  outstanding

                                       48
                                     -262-
<PAGE>

Common Stock to be transferred  (the "Pro Rata Share"),  the  consideration  per
Share to be paid by a third party  purchaser and the other terms and  conditions
of the transaction.  Within 15 days following the date of the Drag Along Notice,
each Investor shall deliver  certificates  representing the Seller Shares,  duly
endorsed,  together  with  all  other  documents  required  to  be  executed  in
connection with such  transactions.  If any Investor should fail to deliver such
certificates,  the  Company  shall cause the books and records of the Company to
show that such Shares are bound by the  provisions  of this Section 2.2 and that
such Shares have been transferred to the third party purchaser and each Investor
consents to such action by the Company.

         (c)  Simultaneously  with the  consummation  of the sale of the  Shares
pursuant to this Section 2.2, the selling Investor(s) shall promptly, but in any
event not later than three (3)  business  days  thereafter,  remit to each other
Investor  the  total  sale  price of the  Seller  Shares  sold by such  Investor
pursuant  thereto;  and shall furnish such other  evidence of the completion and
time of  completion of such sale or other  disposition  and the terms thereof as
may be reasonably requested by such other Investor.

         (d) The purchase  from the Investor  pursuant to this Section 2.2 shall
be on the same date of transfer and on the same terms and  conditions  as are to
be received by the selling  Investor(s),  which date, terms and conditions shall
be stated in the Drag Along Notice  (provided,  however,  that if any securities
are to be received by the Investors in connection  with such sale, each Investor
will have the right to receive  non-voting  securities).  No  Investor  shall be
required to make any  representations or warranties in connection with such sale
other  than  customary  limited  representations  solely  with  respect  to such
Investor's  ownership  of its Shares and  authorization  to  participate  in the
transaction.

         (e) The rights and obligations of the parties set forth in this Section
2.2 shall terminate  immediately prior to the consummation of a Qualified Public
Offering.

                                   SECTION 3.

                      AFFIRMATIVE COVENANTS OF THE COMPANY

     The Company hereby covenants and agrees as follows:

     3.1 Financial  Information.  So long as an Investor is a holder of at least
10% of the issued and outstanding  Series A Preferred Stock (including shares of
Common Stock issued upon conversion  thereof),  the Company will furnish to such
Investor the following reports:

         (a) As soon as  practicable  after the end of each fiscal year,  and in
any event  within one hundred  and twenty  (120) days  thereafter,  consolidated
balance  sheets of the  Company and its  subsidiaries,  if any, as of the end of
such fiscal year,  and  consolidated  statements of income and cash flows of the
Company and its subsidiaries, if any, for such year, prepared in accordance with
generally  accepted  accounting  principles  and  setting  forth in each case in
comparative  form the figures for the previous  fiscal year,  all in  reasonable
detail and certified by  independent  public  accountants  of national  standing
selected by the Company; and

                                       49
                                     -263-
<PAGE>

         (b) As soon as practicable after the end of each calendar quarter,  and
in any  event  within 30 days  thereafter,  consolidated  balance  sheets of the
Company and its  subsidiaries,  if any, as of the end of each calendar  quarter,
and consolidated  statements of income and cash flow for such period and for the
current  fiscal year to date,  together with a comparison of such  statements to
the Company's operating plan then in effect.

     3.2  Assignment  of Rights to  Financial  Information.  The rights  granted
pursuant  to  Section  3.1  may  be  assigned  by  an  Investor  to a  Permitted
Transferee,  provided that the Company receives notice thirty (30) days prior to
such assignment.

     3.3  Termination  of Covenants.  The covenants set forth in Section 3 shall
terminate on, and be of no further force or effect after,  the date on which the
Company is required to file reports with the  Commission  pursuant to Section 13
or 15(d) of the Exchange Act.

     3.4  Definition  of  Investor.  For purposes of  determining  the amount of
Shares held by an Investor,  all Investors affiliated with any Investor shall be
treated as a single Investor.

                                   SECTION 4.

                        Election of Directors; DEADLOCKS

     4.1 Voting Agreement.  Until the termination of the covenants  contained in
this  Section 4.1 in  accordance  with  Section 4.2 below,  and  notwithstanding
anything in the Company's  Amended and Restated  Certificate of Incorporation or
Bylaws to the contrary,  (i) the Company's  Board of Directors  shall consist of
six members,  and (ii) at any annual or special  meeting of the  stockholders of
the  Company at which one or more Board  members  are to be  elected,  or in any
action by written consent of the  stockholders of the Company  pursuant to which
one or more Board members are to be elected (whether such Board member(s) are to
be elected due to  expiration of term,  or a vacancy,  removal or  resignation),
each  Investor  agrees that he, she or it shall vote the Common  Stock and other
voting  securities of the Company held by such  Investor in a manner  consistent
with the following  appointments:  (i) three  representatives  appointed by Data
Transmission  Network  Corporation ("DTN") without  limitations;  and (ii) three
representatives  appointed by Photon Research  Associates,  Inc. ("PRA") without
limitations.  A Director  appointed by DTN and a Director appointed by PRA shall
each serve as Co-Chairmen of the Board, with the initial  Co-Chairmen being Greg
Sloma and Jim Myer.

     4.2 Termination of Voting Agreement. The covenants set forth in Section 4.1
shall terminate  immediately  prior to the  consummation  of a Qualified  Public
Offering.

     4.3 Impasses.

         (a)  Negotiation.  In the event the  Company's  Board of  Directors  is
evenly split with respect to any proposed  action by the Company which  requires
the  approval  of its Board of  Directors  (an  "Impasse"),  the matter  will be
immediately  referred to the Co-Chairmen of the Board,  who will attempt in good
faith to negotiate a mutually  acceptable  resolution  for  presentation  to the
Board of Directors.

                                       50
                                     -264-
<PAGE>

         (b) Mediation. If the Co-Chairmen of the Board are unable to agree on a
resolution  which  breaks the Impasse  within ten (10) days,  the  parties  will
attempt  in good  faith to reach a  mutually  acceptable  resolution  through  a
non-binding mediation to be conducted in accordance with procedures to be agreed
upon by the parties at that time.  The  mediation  process shall be concluded as
expeditiously  as  possible  but not more than  forty-five  (45) days  after the
expiration of the initial ten-day  negotiation  period. Any such mediation shall
be held in Albuquerque, New Mexico unless the parties otherwise agree to another
location.

         (c) Impasse Sale.

            (i) If the Impasse  still exists  following  the  conclusion  of the
mediation  referred to in Section  4.3(b) above,  then either DTN or PRA, as the
case may be (the "First  Party") may deliver  written  notice to the other party
(the  "Second  Party") of its  election to  commence an Impasse  sale under this
Section  4.3(c) (an "Impasse  Sale  Notice").  The Impasse Sale Notice shall set
forth the purchase  price (the  "Purchase  Price") for the First Party's  entire
ownership interest in the Company  determined in its sole discretion,  and shall
constitute a binding  offer by the First Party to (A) sell its entire  ownership
interest in the Company to the Second  Party for the Purchase  Price,  or (B) to
purchase the Second  Party's  entire  ownership  interest in the Company for the
Purchase Price.

            (ii) Within  thirty  (30) days of its  receipt of the  Impasse  Sale
Notice,  the Second Party shall elect by written  notice to the First Party (the
"Response")  either to sell its entire ownership  interest in the Company to the
First Party for the  Purchase  Price,  or to purchase the First  Party's  entire
ownership  interest  in the  Company for the  Purchase  Price.  In the event the
Second Party fails to respond  within the requisite  30-day  period,  the Second
Party shall be  compelled to sell its entire  ownership  interest in the Company
for the Purchase Price.

            (iii)  Within one hundred  twenty  (120) days of the delivery of the
Response or, if no Response is  delivered,  the  expiration of the 30-day period
described in clause (ii) above,  the parties shall  consummate  the purchase and
sale of the selling  party's  entire  ownership  interest  in the  Company  (the
"Impasse Sale Closing") in accordance with the Response and this Section 4.3(c).
The party acquiring the other party's ownership  interest shall provide ten (10)
days'  prior  written  notice  to the  other  party  of the date and time of the
Impasse Sale Closing.

            (iv) The purchase and sale pursuant to this Section  4.3(c) shall be
accomplished  through  an  escrow  established  at a title  insurance  or escrow
company mutually approved by the parties. The parties shall execute such further
instructions  as the  escrow  holder and the  purchasing  party  reasonably  may
require  to  consummate  such  escrow,   provided  such   instructions  are  not
inconsistent  with the terms of this  Agreement.  Closing  costs shall be shared
equally by the parties. The selling party shall transfer to the purchasing party
its  entire  ownership  interest  in the  Company  free and clear of all  liens,
security  interests and competing  claims,  and shall deliver to the  purchasing
party such  instruments  of transfer  and such  evidence  of due  authorization,
execution and delivery and of the absence of such liens,  security  interests or
competing claims as the purchasing party shall reasonably  request.  The selling
party  shall also  deliver  letters of  resignation  from the  directors  it has

                                       51
                                     -265-
<PAGE>

appointed  pursuant  to Section  4.1 above.  At the Impasse  Sale  Closing,  the
purchasing  party shall pay the  Purchase  Price to the selling  party by a wire
transfer of  immediately  available  funds to a bank account  designated  by the
selling party.

            (v) If the selling party or any of its  affiliates is a guarantor of
any obligations of the Company or otherwise liable thereon, prior to the Impasse
Sale Closing the purchasing  party shall use reasonable best efforts to obtain a
release  of each such  guaranty  or  liability  in form and  content  reasonably
acceptable to the selling party and its  guarantor  affiliates.  If such release
cannot be obtained prior to the Impasse Sale Closing, the purchasing party shall
hold the selling  party and its  guarantor  affiliates  harmless with respect to
such guarantees and liabilities in form and content reasonably acceptable to the
selling party and its guarantor affiliates.

            (vi) If the purchasing  party fails to close the transaction  within
the 120-day  period  referred to in clause  (iii)  above,  and such  failure was
caused by or within the  reasonable  control of the purchasing  party,  then the
selling  party may elect to acquire the  defaulting  purchasing  party's  entire
ownership  interest  in the  Company for ninety  percent  (90%) of the  Purchase
Price,  by  delivering  written  notice  of  such  election  to  the  defaulting
purchasing  party within ten (10) days of the expiration of the 120-day  period.
If the other  party so elects,  then the  transaction  shall be  consummated  in
accordance with clauses (iii)-(v) above. If the selling party does not deliver a
notice to the defaulting  purchasing  party within such 10-day period,  then the
Company's  business shall continue as before and the First Party may not deliver
another  Impasse Sale Notice for a period of eighteen (18) months  following the
date of such party's original Impasse Sale Notice.

            (vii) Either party shall have the right to seek specific performance
of this Section 4.3(c) in a court of competent jurisdiction or arbitration,  and
the other  party  shall not plead as a defense  that an  adequate  remedy at law
exists.

         (d) The covenants set forth in Section 4.3 shall terminate  immediately
prior to the consummation of a Qualified Public Offering.

                                   SECTION 5.

                                  Miscellaneous

     5.1  Assignment.  Except  as  otherwise  provided  herein,  the  terms  and
conditions of this  Agreement  shall inure to the benefit of and be binding upon
the respective successors and assigns of the parties hereto.

     5.2 Third  Parties.  Nothing  in this  Agreement,  express or  implied,  is
intended to confer  upon any party,  other than the  parties  hereto,  and their
respective  successors  and  assigns,  any  rights,  remedies,   obligations  or
liabilities under or by reason of this Agreement,  except as expressly  provided
herein.

                                       52
                                     -266-
<PAGE>

     5.3 Governing Law. This Agreement  shall be governed by and construed under
the laws of the State of Delaware  without  regard to choice of laws or conflict
of laws' provisions thereof.

     5.4   Counterparts.   This  Agreement  may  be  executed  in  two  or  more
counterparts  and signature  pages may be delivered by facsimile,  each of which
shall be deemed an original,  but all of which together shall constitute one and
the same instrument.

     5.5 Notices. Any notice required or permitted by this Agreement shall be in
writing  and shall be sent by  prepaid  registered  or  certified  mail,  return
receipt requested, addressed to the other party at the address shown below or at
such other  address for which such party  gives  notice  hereunder.  Such notice
shall be deemed to have been given three (3) days after deposit in the mail.

     5.6  Severability.  If one or more provisions of this Agreement are held to
be  unenforceable  under applicable law,  portions of such  provisions,  or such
provisions in their  entirety,  to the extent  necessary,  shall be severed from
this  Agreement,  and the  balance of this  Agreement  shall be  enforceable  in
accordance with its terms.

     5.7 Amendment and Waiver. Any provision of this Agreement may be amended or
waived  with the  written  consent of the  Company  and the  Holders of at least
sixty-six and  two-thirds  percent  (66-2/3%) of the  outstanding  shares of the
Registrable  Securities;  provided  that (i) no such  amendment  or waiver shall
impose or increase any liability or  obligation on a Holder  without the consent
of such Holder; and (ii) no such amendment or waiver having a disproportionately
adverse  effect on any  Holder in  relation  to the  other  Holders  may be made
without  consent of such Holder.  Any amendment or waiver effected in accordance
with this paragraph shall be binding upon each Holder of Registrable  Securities
and  the  Company.  In  addition,  the  Company  may  waive  performance  of any
obligation  owing  to it,  as to  some  or all of  the  Holders  of  Registrable
Securities,  or  agree  to  accept  alternatives  to such  performance,  without
obtaining the consent of any Holder of Registrable Securities. In the event that
an  underwriting  agreement  is entered into between the Company and any Holder,
and such underwriting agreement contains terms differing from this Agreement, as
to any such Holder the terms of such underwriting agreement shall govern.

     5.8 Effect of Amendment or Waiver.  The Investors and their  successors and
assigns  acknowledge that by the operation of Section 5.7 hereof (but subject to
the  limitations  therein)  the  Holders  of  the  requisite  percentage  of the
outstanding Registrable Securities, acting in conjunction with the Company, will
have the right and power to diminish or eliminate any or all rights  pursuant to
this Agreement.

     5.9 Rights of Holders. Each party to this Agreement shall have the absolute
right to exercise or refrain from exercising any right or rights that such party
may have by reason of this Agreement,  including,  without limitation, the right
to consent to the waiver or modification of any obligation under this Agreement,
and such party shall not incur any  liability to any other party or other Holder
of any  securities of the Company as a result of  exercising or refraining  from
exercising any such right or rights.

                                       53
                                     -267-
<PAGE>

     5.10 Delays or Omissions. No delay or omission to exercise any right, power
or remedy accruing to any party to this Agreement, upon any breach or default of
the  other  party,  shall  impair  any  such  right,  power  or  remedy  of such
non-breaching  party nor shall it be construed to be a waiver of any such breach
or  default,  or an  acquiescence  therein,  or of or in any  similar  breach or
default  thereafter  occurring;  nor shall any  waiver of any  single  breach or
default  be deemed a waiver  of any  other  breach  or  default  theretofore  or
thereafter  occurring.  Any waiver,  permit,  consent or approval of any kind or
character  on the  part  of any  party  of any  breach  or  default  under  this
Agreement,  or any  waiver  on  the  part  of any  party  of any  provisions  or
conditions  of this  Agreement,  must be made in writing and shall be  effective
only to the extent specifically set forth in such writing. All remedies,  either
under this Agreement,  or by law or otherwise  afforded to any holder,  shall be
cumulative and not alternative.

     5.11 Entire Agreement.  This Agreement  constitutes the entire agreement of
the parties  hereto  related to the subject  matter  hereof,  and supersedes all
prior agreements  between the parties,  whether written or oral, related to such
subject matter.

     5.12  Aggregation of Stock.  All securities  held or acquired by Affiliated
entities or persons shall be aggregated  together for the purpose of determining
the availability of any rights under this Agreement.

     5.13 Dispute  Resolution.  Any dispute,  claim or controversy arising under
this Agreement or in any way related to this Agreement,  or its  interpretation,
enforceability or inapplicability that cannot be resolved by mutual agreement of
the parties shall be submitted to binding arbitration.  The arbitration shall be
conducted by a single  arbitrator  mutually agreed upon by the parties or, if no
arbitrator is mutually  selected  within thirty (30) days of a demand  therefor,
then  by  a  retired   judge  from  the  Judicial   Arbitration   and  Mediation
Service/Endispute   ("JAMS")  office  located  in  San  Diego,  California.  The
arbitration shall be conducted in San Diego, California,  in accordance with the
Commercial  Arbitration  Rules  of the  American  Arbitration  Association.  The
arbitration  award shall be final and binding,  and judgment on the award may be
entered in any court having jurisdiction  thereof. The parties hereby consent to
the  consolidation  of any arbitration  hereunder with any and all  arbitrations
commenced  under the License  Agreement,  the Series A Preferred  Stock Purchase
Agreement, the Common Stock Purchase Agreement and/or the Warrants.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       54
                                     -268-
<PAGE>


         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first above written.

FOUNDERS:

                                          /s/ John Rasure
                                          -----------------------------
                                          John Rasure

                                          /s/ Mark Servilla
                                          -----------------------------

                                          /s/ Dan Long
                                          -----------------------------
                                          Dan Long

COMPANY:                                             EARTHSCAN NETWORK INC.


                                          By:/s/ John Rasure
                                             ----------------------
                                             John Rasure
                                          Title: President

                                          By:/s/ Sonya Kay Porth
                                             ----------------------
                                             Sonya Kay Porth
                                          Title:Corporate Secretary/Treasurer
                                       55
                                     -269-
<PAGE>

INVESTORS:                                DATA TRANSMISSION NETWORK CORPORATION


                                          By:/s/ Greg T. Sloma
                                             -------------------------
                                             Greg T. Sloma
                                          Title: President & COO

                                          By: /s/ Brian L. Larson
                                              ------------------------
                                              Brian L. Larson
                                          Title: SVP & CFO

                                          PHOTON RESEARCH ASSOCIATES, INC.


                                          By:/s/ James A. Myer
                                             -------------------------
                                             James A. Myer
                                          Title:CO-COB

                                          By:/s/ Sonya Kay Porth
                                             -------------------------
                                             Sonya Kay Porth
                                          Title:Corporate Secretary

                                          FLEMMING, LESSARD & SHIELDS, LLC


                                          By:/s/ B. Mason Flemming, Jr.
                                             ----------------------------
                                             B. Mason Flemming, Jr.
                                          Title: Managing Director

                                          By:
                                          Title:
                                       56
                                     -270-
<PAGE>

                                       A-1


                                    EXHIBIT A

                              Schedule of Investors

                             Investor Name & Address


Photon Research Associates, Inc.
5720 Oberlin Drive
San Diego, California 92121


Data Transmission Network Corporation
9110 W. Dodge Road, #200
Omaha, NE  68114-3316

John Rasure
6565 Americas Parkway, Suite 660
Albuquerque, New Mexico  87110

Mark Servilla
6565 Americas Parkway, Suite 660
Albuquerque, New Mexico  87110

Dan Long
6565 Americas Parkway, Suite 660
Albuquerque, New Mexico  87110

                                       57
                                     -271-
<PAGE>


                                   Exhibit F

                         Common Stock Purchase Agreement

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       58
                                     -272-
<PAGE>


                                   Exhibit G

                                    Warrants

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       59
                                     -273-
<PAGE>


                                   Exhibit H

                            1999 Stock Incentive Plan

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       60
                                     -274-
<PAGE>


                                   Exhibit I

                           Form of DTN Promissory Note

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       61
                                     -275-
<PAGE>

                                   Exhibit J

                         Form of Opinion of DTN Counsel

"The reporting  person agrees to furnish  supplementally  a copy of this omitted
Exhibit to the Securities and Exchange Commission upon request."

                                       62
                                     -276-
<PAGE>




                           ELEVENTH AMENDMENT TO LEASE

         THIS ELEVENTH  AMENDMENT TO LEASE (the "Amendment") is made and entered
into this 31st day of March,  1998, by and between LAFP-SF,  Inc.,  successor in
interest to The Prudential Insurance Company Of America ("Landlord"),  having an
office c/o Lowe Enterprises  Colorado,  Inc., 1475 Lawrence  Street,  Suite 210,
Denver,  Colorado 80202, and Data Transmission  Network Corporation  ("Tenant"),
having an office at 9110 West Dodge Road, Suite 200, Omaha, Nebraska 68114.

                                    RECITALS

A.       The  Prudential  Insurance  Company  of America  and Data  Transmission
         Network  Corporation entered into that certain lease dated as of May 2,
         1995, for Suites #175A, #110, #200, #300, #301, #310, #320, #325, #340,
         #360,  #362, and #100  containing  75,931 rentable square feet (RSF) in
         the Building known as Embassy  Plaza,  located at 9110 West Dodge Road,
         Omaha, Nebraska ("the Premises").

B.       Subsequently,  The  Prudential  Insurance  Company Of America  and Data
         Transmission  Network  Corporation  executed a First Amendment To Lease
         dated September 29, 1995, a Second  Amendment To Lease dated January 5,
         1996, a Third  Amendment To Lease dated  January 5, 1996,  and a Fourth
         Amendment To Lease between LAFP-SF,  Inc. and Tenant dated December 23,
         1996, a Fifth  Amendment To Lease dated July 7, 1997, a Sixth Amendment
         To Lease  dated  July 7,  1997,  a  Seventh  Amendment  To Lease  dated
         September  19, 1997, an Eighth  Amendment To Lease dated  September 19,
         1997, a Ninth  Amendment To Lease dated September 19, 1997, and a Tenth
         Amendment To Lease dated  December 23, 1997.  The combined terms of the
         Lease and  subsequent  Amendments  shall  herein be  referred to as the
         "Lease".

         NOW,  THEREFORE,  in consideration of the foregoing  promises and other
good and  valuable  considerations,  the  receipt and  sufficiency  of which are
hereby acknowledged, the parties hereto covenant and agree as follows:

1.       Waiver.  The  following  shall be added to Paragraph  11A of the Lease:
         "Each party hereby  waives all claims for recovery from the other party
         for any loss or damage to any of its property  insured  under valid and
         collectible   insurance   policies  to  the  extent  of  any   recovery
         collectible  under such insurance,  subject to the limitation that this
         waiver  shall  apply  when  permitted  by  the  applicable   policy  of
         insurance.

2.       Electrical  Room Key.  Landlord  agrees to provide Tenant with a key to
         access the  electrical  rooms that serve its Premises or the purpose of
         performing  on-going  maintenance and incidental  modifications  of the
         circuits  that  serve  Tenant's  Premises.   As  a  condition  of  this
         agreement,  Landlord, at Tenant's sole expense, will engage a competent
         electrical  contractor to perform semi-annual load testing and infrared
         scanning of all electrical  circuits and panels within these electrical
         rooms. To the extent any repairs or corrective  actions are required as
         a result  of  Tenant's  activities  in such  electrical  rooms,  Tenant
         agrees,  at its sole  cost,  to  immediately  perform  such  repairs or
         corrective actions. Tenant's contractor for any of the above work shall
         be subject to Landlord's approval in its sole discretion.

         Landlord's  agreement  to  provide  Tenant  with  access  to the  above
         electrical  rooms  in no way  circumvents,  cancels,  or  modifies  any
         provisions  of  the  Lease  with  respect  to  Tenant's   liability  or
         requirements  for  Landlord's   approval  of  any  Tenant  alterations.
         Landlord  may,  at any  time  and in its sole  discretion,  cancel  the
         provisions  of this  paragraph  and require  Tenant to return such key.
         Should  Tenant not return such key upon demand or  duplicate  such key,
         Landlord  will change the locks on all  effected  electrical  rooms and
         Tenant agrees to pay for all costs associated with changing such locks.

3.       Effect of Agreement.  Except as herein specifically provided, the terms
         and conditions of the Lease shall continue in full force and effect.

                                     -277-
<PAGE>

4.       This  Amendment  shall be binding  upon and inure to the benefit of the
         parties hereto, their successors and assigns.

5.       The  parties   hereto  hereby   reaffirm  and  ratify  all   covenants,
         representations   and  warranties  in  the  Lease  as  amended  by  the
         Amendment.

         IN WITNESS WHEREOF, Landlord and Tenant have executed this Amendment as
of the day and year first above written.

Tenant:                                              Landlord:

Data Transmission Network Corporation,               LAFP-SF, Inc.
a Delaware corporation

By:/s/ Greg T. Sloma                        By:  Lowe Enterprises Investment
   --------------------------                    Management, Inc.
   Greg T. Sloma                            Its: Authorized Agent

Its:President and COO                       By:/s/ Kari O'Neil
                                               ----------------------
                                               Kari O'Neil

                                            Its:Vice President
                                       2
                                     -278-

                           TWELFTH AMENDMENT TO LEASE

         THIS TWELFTH  AMENDMENT TO LEASE (the  "Amendment") is made and entered
into this 12th day of May,  1999,  by and between  LAFP-SF,  Inc.,  successor in
interest to The Prudential Insurance Company of America ("Landlord"),  having an
office c/o Lowe Enterprises  Colorado,  Inc., 1515 Arapahoe  Street,  Tower III,
Suite 900, Denver,  Colorado 80202, and Data  Transmission  Network  Corporation
("Tenant"), having an office at 9110 West Dodge Road, Suite 200, Omaha, Nebraska
68114.

                                    RECITALS

A.       The  Prudential  Insurance  Company of America and Tenant  entered into
         that  certain  Lease  dated  as  of  May  2,  1995.  Subsequently,  The
         Prudential  Insurance  Company of America  and Tenant  executed a First
         Amendment to Lease dated  September  29,  1995,  a Second  Amendment to
         Lease  dated  January 5, 1996,  and a Third  Amendment  to Lease  dated
         January 5, 1996, and thereafter,  Landlord and Tenant executed a Fourth
         Amendment to Lease dated December 23, 1996, a Fifth  Amendment to Lease
         dated July 7, 1997,  a Sixth  Amendment  to Lease dated July 7, 1997, a
         Seventh  Amendment  to  Lease  dated  September  19,  1997,  an  Eighth
         Amendment to Lease dated September 19, 1997, a Ninth Amendment to Lease
         dated September 19, 1997, a Tenth amendment to Lease dated December 23,
         1997,  and an Eleventh  Amendment  to Lease dated March 31,  1998.  The
         lease and all  amendments  thereto are  hereinafter  referred to as the
         "Lease."

B.       Pursuant to the Lease, Tenant occupies Suites #175A, #175B, #100, #101,
         #110,  #130,  #200,  #300,  #301,  #310,  #315, #320, #325, #340, #350,
         #350A, #350B, #360, and #362, containing approximately 107,576 rentable
         square feet (the "Current  Premises") in the Building  known as Embassy
         Plaza, located at 9110 West Dodge Road, Omaha, Nebraska pursuant to the
         Lease.

C.       All  capitalized  terms not  defined  herein  shall  have the  meanings
         ascribed to them in the Lease.

         NOW,  THEREFORE,  in the  consideration  of the foregoing  promises and
other good and valuable considerations, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto covenant and agree as follows:

         I.  EXTENSION OF LEASE FOR CURRENT PREMISES.

1. Term.  The term of the Lease with  respect to the Current  Premises is hereby
extended  for an  additional  term of five (5)  years  commencing  June 1,  2005
("Current  Premises  Extension  Commencement  Date") and  expiring  May 31, 2010
("Current Premises Extension Term").

                                     -279-
<PAGE>

2. Base Rent.  Tenant shall pay as Base Rent for the Current Premises  Extension
Term the sum of Two Million Two Hundred  Fifty-Nine  Thousand Ninety Six Dollars
($2,259,096.00)  per year,  payable in advance on the first day of each month in
the amount of  $188,258.00  per month,  in  accordance  with the  provisions  of
Paragraph  2 of  the  Lease.  In  addition,  Tenant  shall  continue  to  pay as
additional  Base Rent  $39,999.96 per year,  payable in monthly  installments of
$3,333.33, for the Additional Parking until May 31, 2005.

3. Base Expense Year and Base Tax Year.  The Base Expense Year and Base Tax Year
for the Current Premises Extension Term shall be the calendar year 2005.

4. Tenant Improvements. Landlord shall provide a tenant improvement allowance of
up to  $215,152.00 to be applied  toward the cost of Tenant's  desired  Premises
improvements.  All improvements  shall be performed in accordance with the terms
of the Tenant  Improvement  Work Schedule  attached hereto and by this reference
made a part hereof,  marked Exhibit "B". Such allowance  shall be made available
to Tenant beginning on the Expansion Premises Commencement Date.

         II.      EXPANSION OF PREMISES

1. Premises.  Pursuant to the provisions of Paragraph 29 of the Lease, effective
the earlier of October 1, 2002 or the date Landlord  delivers  possession of the
Expansion  Premises to Tenant  ("Expansion  Premises  Commencement  Date"),  the
Premises  shall  be  expanded  to  include   Suites  120  and  160,   containing
approximately  23,563  rentable  square  feet as  depicted  on the  floor  plans
attached  hereto,  marked  Exhibit "A" and by this  reference made a part hereof
(the "Expansion Premises"), for a total in the Premises of approximately 131,139
rentable square feet.  Beginning on the Expansion  Premises  Commencement  Date,
the"Premises,"  as that term is defined  in the Lease,  shall be amended to mean
and include the Expansion  Premises and, subject to the terms of this Amendment,
the demise of the  Expansion  Premises  shall be subject to each and every term,
provision and condition set forth in the Lease as if the Expansion Premises were
originally   demised   thereunder.   Notwithstanding   the   foregoing,   Tenant
acknowledges  that Kirkham  Michael &  Associates,  Inc.  (the Current  Tenant")
currently leases the Expansion  Premises,  with such lease expiring on September
30,  2002.  Should the  Current  Tenant  holdover  and not vacate the  Expansion
Premises prior to the Expansion Premises Commencement Date, Landlord will not be
liable  to  Tenant  for any  damages  suffered  by  Tenant  as a result  of such
holdover. However, in such event, Landlord will use reasonable efforts to pursue
its legal  remedies to evict the Current  Tenant  from the  Expansion  Premises.
Alternatively,  in the event  that the  Current  Tenant  vacates  the  Expansion
Premises prior to the expiration of its lease  therefor,  Landlord shall deliver
possession of the Expansion Premises earlier than October 1, 2002. Tenant hereby
represents  and  warrants  to  Landlord  that  Tenant  shall  not  engage in any

                                       2
                                     -280-
<PAGE>

discussions with the Current Tenant  concerning early termination of the Current
Tenant's premises, or related issues,  without Landlord being present.  Landlord
and Tenant  agree that upon  delivery  by  Landlord  to Tenant of the  Expansion
Premises,  the parties will execute a Commencement  Date Certificate in the form
attached  hereto as Exhibit "C" confirming the Expansion  Premises  Commencement
Date.

2. Term.  The term of the Lease with respect to the Expansion  Premises shall be
for a period of ten years commencing on the Expansion Premises Commencement Date
and expiring ten years thereafter ("Expansion Premises Term").

3. Base Rent.  Tenant shall pay as Base Rent for the Expansion  Premises  during
the Expansion  Premises Term an amount equal to $20.00 per rentable  square foot
per year  increased by an amount equal to 3.5% per year for each  calendar  year
from the date of this  Amendment  until the calendar year in which the Expansion
Premises  Commencement Date occurs.  So, for example,  if the Expansion Premises
Commencement  Date  occurs in  calendar  year 2000,  the Base Rent per  rentable
square foot for the Expansion Premises would be $20.70 per rentable square foot.
Base Rent  shall be  payable  in monthly  installments  in  accordance  with the
provisions  of Paragraph 2 of the Lease.  In addition,  on the 61st month of the
Expansion  Premises Term, Base Rent shall be increased in an amount equal to the
monthly  installment  of Base Rent paid on the 60th  month,  as provided in this
Paragraph 3,  multiplied  by a number which is reached by dividing the "Consumer
Price Index for Wage  Earners and  Clerical  Workers in the City of  Denver--All
Items," as published by the Bureau of Labor Statistics, U.S. Department of Labor
(the "Denver  CPI")  figure for January of the  calendar  year in which the 61st
month of the Expansion Premises Term occurs by the Denver CPI figure for January
of the calendar month in which the Expansion Premises  Commencement Date occurs.
If the official  monthly Denver CPI is not available for use as a cost-of-living
index for the  months  provided  to be used as a basis for such  formula,  it is
agreed that the Denver CPI as issued and  published  for the earliest  preceding
months should be used in  determining  such formula.  If, at any time during the
term hereof,  the U.S. Bureau of Labor Statistics shall discontinue the issuance
of the Bureau of Labor  Statistics  Consumer Price Index,  the parties shall use
any other standard,  nationally recognized  cost-of-living index then issued and
available, which is published by the U.S. government.

4. Adjustment Rent.  Effective upon the Expansion  Premises  Commencement  Date,
Tenant  shall pay  Adjustment  Rent with  respect to the  Expansion  Premises in
accordance  with the  provisions  of Paragraph 2 of the Lease.  The Base Expense
Year and Base Tax Year for the  Expansion  Premises  Term shall be the  calendar
year in which the Expansion Premises Commencement Date occurs.

5. Tenant  Improvements.  Tenant is taking the Expansion  Premises in an "As Is"
condition,  and  Landlord  shall have no  responsibility  to provide  any tenant
improvements in such premises.  However,  Tenant shall have the right to use any
remaining tenant improvement allowance amounts which were granted by Landlord in
prior  Lease  amendments  for  other  premises  of  Tenant,   including  without
limitation  the  improvement  allowance  granted  to  Tenant  under  Article  1,
Paragraph 4 of this amendment,  subject to Landlord's  prior written approval of
such  improvements,  and provided  that all  improvements  shall be performed in
accordance  with the terms of the  Tenant  Improvement  Work  Schedule  attached

                                       3
                                     -281-
<PAGE>

hereto and by this  reference  made a part  hereof,  marked  Exhibit  "B".  Such
allowance shall be made available to Tenant beginning on the Expansion  Premises
Commencement Date.

6. Parking. Tenant shall have the right to use all of the exposed parking spaces
at the Building (but not at any other  building in the complex) at no additional
charge  during  the  Expansion  Premises  Lease  Term.  Landlord  shall  not  be
responsible for  unauthorized use of parking spaces,  and any such  unauthorized
use  shall not be a default  by  Landlord  under the  Lease.  Landlord  may,  at
Landlord's  sole  option,   relocate  Tenant's  parking  spaces  to  a  suitable
alternative  parking area during repair or  reconstruction of the parking areas.
If at any time  Landlord  fails to or is unable to provide all or any portion of
such  parking  spaces to Tenant,  such fact  shall not be a default by  Landlord
under the Lease, either in whole or in part, and Tenant shall not be entitled to
any claim or remedy.  Tenant and its  employees  shall have the right to use the
parking spaces  described  herein 24 hours a day, seven days per week.  Landlord
reserves the right to post and enforce reasonable rules governing  parking,  and
to take away the  parking  rights of any  individual  who fails to abide by such
rules.

7. Right of  Relocation.  The  Expansion  Premises  Term is expected to continue
beyond the expiration of the Current Premises Extension Term. As a result,  when
the Current  Premises  Extension  Term  Expires,  Tenant shall have the right to
choose what portion of the Premises,  as expanded  hereunder,  comprising 23,000
rentable  square  feet,  it will  continue  occupying  for the  duration  of the
Expansion  Premises Term (the  "Continuing  Premises"),  and what portion of the
Premises it surrenders to Landlord, subject to the following:

         (a)   The Continuing Premises must be physically contiguous, or located
               in the same pod of the  Building  on each of the first and second
               floors;

         (b)   Landlord  shall have no obligation to construct any  improvements
               in the Continuing Premises, and to the extent Tenant requires any
               consolidation finish work, such improvements shall be at Tenant's
               sole cost and expense; and

         (c)   Tenant shall be required to reimburse Landlord for the reasonable
               costs  incurred by Landlord  associated  with  construction  of a
               demising wall, and any other construction  necessary to segregate
               the Continuing  Premises from the remainder of the Premises being
               surrendered.

                                       4
                                     -282-
<PAGE>

         III.     GENERAL PROVISIONS

1. Notices.  Landlord's notice address as set forth in Paragraph 24 of the Lease
shall be revised to reflect the following changes:

                  If to Landlord:   LAFP-SF, Inc.
                                    c/o Lowe Enterprises Colorado, Inc.
                                    1515 Arapahoe Street, Tower III, Suite 900
                                    Denver, Colorado 80202
                                    Attn:  Senior Vice President - Operations
                  with a copy to:   Pacific Realty Group, Inc.
                                    1905 Harney Street, Suite 403
                                    Omaha, Nebraska 68102
                                    Attn:  Senior Vice President - Management
                                           Operations

2.  Density Cap.  Tenant shall not allow an occupancy  density in excess of five
(5) people per 1,000  rentable  square feet. If Tenant fails to comply with such
occupancy  limit, in addition to Landlord's  other rights and remedies under the
Lease,  Landlord  shall have the right and option to  terminate  this Lease upon
written notice to Tenant effective on the date set forth in such notice.

3.  Removal  of  Equipment.  Paragraph  15 of the  Lease is  hereby  amended  by
inclusion of the following language at the end of said paragraph:

                  "The  application of the foregoing  provisions  shall include,
         without limitation, any and all telecommunications  equipment installed
         in the Premises or elsewhere in the Building by or on behalf of Tenant,
         including   wiring,   or  other   facilities   for   telecommunications
         transmittal."

4. Brokerage Disclosure.  Tenant represents and warrants to Landlord that it has
dealt only with Pacific  Realty  Group,  acting as  Landlord's  exclusive  agent
("Broker") in the negotiation of this Amendment.  Landlord shall make payment of
the  brokerage  fee  due to the  Broker  pursuant  to and in  accordance  with a
separate  agreement  with the Broker.  Landlord and Tenant each hereby agrees to
indemnify and hold  harmless the other of and from any and all damages,  losses,
costs  or  expenses  (including  without  limitation,  all  attorneys'  fees and
disbursements)  by reason of any claim of or  liability  to any other  broker or
other  person  claiming  through  the  other  party  and  arising  out  of or in
connection with the negotiation, execution and delivery of this Amendment.

                                       5
                                     -283-
<PAGE>

5. Reaffirmation of Lease. Except as herein specifically provided, the terms and
conditions  of the Lease shall  continue  in full force and effect.  The parties
hereto hereby reaffirm and ratify all covenants,  representations and warranties
in the Lease as amended by this Amendment.

6. Binding Effect. This Amendment shall be binding upon and inure to the benefit
of the parties hereto, their successors and assigns.

         IN WITNESS WHEREOF, Landlord and Tenant have executed this Amendment as
of the day and year first above written.

Tenant:                                              Landlord:

Data Transmission Network                   LAFP-SF, Inc.
Corporation, a Delaware
corporation

By:/s/ Greg T. Sloma                        By:  Lowe Enterprises Investment
   ------------------------                 Management, Inc.
   Greg T. Sloma                            Its: Authorized Agent

Its:President and COO                       By:/s/ Tom Maul
                                               -------------------------
                                                Tom Maul

                                            Its:Vice President

                                       6
                                     -284-
<PAGE>



EXHIBIT "B" to be made a part of a Twelfth  amendment To Lease between  LAFP-SF,
INC.  (Landlord),  and DATA  TRANSMISSION  NETWORK  CORPORATION  (Tenant)  dated
______, 2000.

                        TENANT IMPROVEMENTS WORK SCHEDULE

                                    ARTICLE 1

                       Landlord's Construction Obligations

Tenant  accepts  the  Expansion  Premises in an "As Is"  condition  and shall be
responsible for any and all  improvements  required for its occupancy and use in
the Premises in accordance  with Article II of this Exhibit "B". If requested by
Tenant,  Landlord's representative will provide construction management services
for Tenant's work in the space.  Landlord's  fee for such services will be 5% of
the total construction cost, including any associated professional fees.

As a part of this Amendment,  Landlord and Tenant have agreed to upgrade certain
parts of the Building's  electrical and mechanical  systems.  Landlord agrees to
pay one-half of the cost to replace the main electrical  switchgear and feeders,
at an estimated cost of  approximately  $58,000.  The remaining  one-half of the
cost  therefor  ("Tenant's  Share of  Switchgear")  shall be paid by  Tenant  as
Additional  Rent  amortized  over the remaining  term of the Lease in accordance
with the provisions  contained in the next paragraph below. Tenant agrees to pay
for the entire  remaining cost of electrical  system  upgrades upon receipt from
Landlord of invoices  therefor.  Landlord shall retain a qualified MEP engineer,
which shall bid the  specifications  for the electrical and mechanical  upgrades
following  approval  thereof by  Landlord  and Tenant as  provided in Article II
below.  No portion of Tenant's  costs  associated  with such  electrical  system
upgrade  shall be amortized  over the Lease term,  except for Tenant's  Share of
Switchgear.

Landlord  agrees to loan to Tenant the initial  costs of the  mechanical  system
upgrade plus an  additional  $100,000  for other  incidental  costs  incurred by
Tenant  provided  that  Tenant's  pro  rata  share  of the  total  costs  of the
mechanical  system  upgrade paid by Landlord  (based upon a useful life for such
upgrades of 17.5 years),  together  with said  $100,000  and  Tenant's  Share of
Switchgear,  shall be repaid to Landlord as Additional  Rent  amortized over the
remaining  portion of the current term of the Lease (which expires May 31, 2005)
for the Current Premises, at a rate of 12% per annum, noncompounded.

                                   ARTICLE II

                       Construction of Tenant Improvements

Tenant  shall  have  the  right  to  place  partitions  and  fixtures  and  make
improvements  or  other  alterations  in the  Premises  in  accordance  with the
provisions of Paragraph 9 of the Lease.  Tenant shall have the right to apply up
to $84,320.19,  which amount  constitutes the amount  remaining from improvement

                                       7
                                     -285-
<PAGE>

allowances  previously  provided  by  Landlord to Tenant for Suites 315 and 350A
("Carry Over Improvement Allowance"),  and, in addition,  Landlord shall provide
to Tenant an  additional  improvement  allowance  of up to two  hundred  fifteen
thousand,  one hundred fifty-two  dollars  ($215,152)  ("Additional  Improvement
Allowance"),  all  of  which  may  be  applied  toward  the  cost  of  any  such
tenant-provided  improvements as follows (the Carry Over  Improvement  Allowance
and the Additional  Improvement  Allowance are hereinafter sometimes referred to
together as the "Improvement Allowance"):

1. At least  three  (3) weeks  prior to the  commencement  of any  construction,
Tenant  shall  furnish  Landlord  with  two  (2)  complete  sets  of  plans  and
specifications  for Tenant's proposed  improvements for review and assessment as
to the  compatibility of said  improvements  with the Building's  systems.  Such
review  shall be a  Tenant's  sole  cost and  expense  and  shall  not be unduly
delayed.  Tenant agrees to make such modifications as are reasonably required by
Landlord.

2. The Improvement  Allowance shall be paid in periodic  installments,  not more
frequently  than  once per  month,  equal to the  total of the  contractor's  or
consultant's  invoice amounts for improvements  made to the Premises,  excluding
any furnishings or business  equipment  (such as computers,  satellite/microwave
dish, office equipment, etc.), as submitted by Tenant and verified to Landlord's
reasonable satisfaction; provided, however, that such payments will be made only
if Tenant is not then in default  under the terms of this Lease and the invoices
are accompanied by lien waivers in the amount equal to that of the invoices, and
provided  further that the Final  Installment,  as defined in paragraph 8 below,
shall be paid only upon  compliance  with the  provisions  of said  paragraph 8.
Landlord  shall make such  periodic  payments  within  thirty  days of  complete
submittal by Tenant in accordance  with the provisions  hereof.  The Improvement
Allowance shall be allocated and  distributed  subject to the provisions of this
Exhibit "B" within the following time frame, subject to Excusable Delays:

         Additional  Improvement  Allowance  - Between  the  Expansion  Premises
Commencement Date and the later of 12 months thereafter or June 30, 2003.

         Carry Over  Improvement  Allowance - Between the date of this Amendment
and June 30, 2000

("Tenant  Improvement  Periods").   For  purposes  of  the  foregoing  sentence,
"Excusable Delays" shall mean any delays due to acts of God, strike,  riot, war,
weather,  failure to obtain labor and materials,  or any other reason beyond the
reasonable  control of Tenant;  provided,  however,  that for  purposes  of this
definition,  Tenant's or its  contractors' or agents' lack of funds shall not be
deemed to be a cause  beyond  the  reasonable  control  of  Tenant.  The  Tenant
Improvement  Periods shall be extended on a day-to-day  basis for each day of an
Excusable Delay,  provided that Tenant shall immediately  notify Landlord in the
event of an Excusable Delay.

                                       8
                                     -286-
<PAGE>

3.  Tenant  will not be entitled to any payment or credit for any portion of the
improvement  allowance which is not actually invoiced and submitted by Tenant on
or before  sixty  days  following  the end of each  Tenant  Improvement  Period,
subject to an Excusable  Delay, in accordance with the provisions of paragraph 2
above.

4. In addition to the provisions set forth in Paragraph 9 of the Lease, Tenant's
contractor shall (and its contract shall so provide):

         (a)   conduct  its  work in  such a  manner  so as not to  unreasonably
               interfere   with  other   tenants  in  the   Building,   Building
               operations,  or any  other  construction  occurring  on or in the
               Building or the Premises;

         (b)   comply with all applicable rules and regulations  relating to the
               construction   activities  in  or  on  the  Building  as  may  be
               reasonably  promulgated  from  time to time  by  Landlord  or its
               agents, upon receipt of same from Landlord;

         (c)   maintain such insurance (such as general  liability and workman's
               compensation) in force and effect as may be reasonably  requested
               by Landlord or as customarily  required for similar  construction
               activities;

         (d)   be responsible  for reaching an agreement with Landlord (to which
               Landlord  shall not  unreasonably  withhold  its consent) and its
               agents as to the terms and conditions  for all  contractor  items
               relating to the conducting of its work, including but not limited
               to, those matters relating to hoisting, systems interfacing,  use
               of  temporary  utilities,  storage  of  materials,  placement  of
               dumpsters,  access  to the  Premises  and the  Building,  and the
               purchase and return of Building standard materials;

         (e)   upon completion of any tenant improvements, Tenant shall promptly
               furnish Landlord with sworn owner's and  contractors'  statements
               and full  and  final  waivers  of lien  covering  all  labor  and
               materials included in such improvements.  Tenant shall not permit
               any mechanic's lien to be filed against the Building, or any part
               thereof,  arising out of any improvement performed, or alleged to
               have been performed,  by or on behalf of Tenant. If any such lien
               is filed,  Tenant shall within thirty (30) days  thereafter  have
               such lien  released  of record or deliver  to  Landlord a bond in
               form,  amount,  and issued by a surety  satisfactory to Landlord,
               indemnifying Landlord against all costs and liabilities resulting
               from  such  lien and the  foreclosure  or  attempted  foreclosure
               thereof.  If Tenant  fails to have such  lien so  released  or to
               deliver such bond to Landlord,  Landlord,  without  investigating
               the  validity of such lien,  may pay or discharge  the same;  and

                                       9
                                     -287-
<PAGE>

               Tenant  shall  reimburse  Landlord  upon demand for the amount so
               paid by Landlord,  including  Landlord's  expenses and attorney's
               fees.

5. Landlord shall have the right to approve all subcontractors to be used by the
Tenant's contractor,  which approval shall not be unreasonably  withheld as long
as such subcontractors comply with the requirements of paragraph 4 above.

6. Tenant shall indemnify and hold harmless  Landlord,  its agents,  contractors
(including Building Contractor), and any mortgagee of Landlord, from and against
any and all  losses,  damages,  costs  (including  costs of suit and  attorney's
fees),  liabilities,  or causes of action for injury to or death of any  person,
for damage to any property, and for mechanic's,  materialmen's or other liens or
claims  arising  out of or in  connection  with  the work  done by the  Tenant's
contractor (and Tenant's  contractor's  subcontractors  and  sub-subcontractors)
under its contract with Tenant.

7. The failure by Tenant,  after receiving  written notice, to materially comply
with any of the  provisions  of Article II of this  Exhibit  shall  constitute a
Default  by Tenant  under the terms of the  Lease and  Landlord  shall  have the
benefit of all remedies  provided for in the Lease,  except  Tenant shall have a
thirty (30) day right to cure Default upon receipt of written notice.

8. Within thirty (30) days of the  completion of Tenant's  improvements,  Tenant
shall deliver to Landlord two (2) copies of the final drawings showing the plans
and specifications of all improvements completed by Tenant or on Tenant's behalf
under  Article II.  Landlord  shall not be  obligated to pay to Tenant the Final
Installment  of the  Improvement  Allowance  until  Tenant  has  delivered  such
drawings.  For purposes hereof, the "Final  Installment" shall mean with respect
to each phase of work,  an amount  equal to 10% of the full cost of such work as
retainage.

9. With respect to the  electrical  upgrades which will be made at Tenant's sole
cost,  Landlord  shall submit to Tenant  invoices for the cost of all such work.
Tenant shall reimburse  Landlord for all such amounts within thirty (30) days of
receipt of each  invoice.  All such  amounts owed to Landlord  shall  constitute
Additional  Rent,  and  Tenant's  failure to so reimburse  Landlord  within said
thirty-day period shall constitute a material monetary default under the Lease.

                                       10
                                     -288-
<PAGE>



EXHIBIT "C" to be made a part of a Twelfth  Amendment To Lease between  LAFP-SP,
INC.  (Landlord),  and DATA  TRANSMISSION  NETWORK  CORPORATION  (Tenant)  dated
______, 1999.

                           COMMENCEMENT DATE AGREEMENT

         This Commencement Date Agreement is entered into by Landlord and Tenant
pursuant to Article II, Paragraph 1 of this Amendment.

1. DEFINITIONS.  In this Agreement,  the following terms have the meanings given
to them:

         (a)   Landlord: LAFP-SP, Inc.

         (b)   Tenant: Data Transmission Network Corporation

         (c)   Lease: Lease between Landlord and Tenant,  dated May 2, 1995, and
               amended by First  Amendment to Lease dated  September 29, 1995, a
               Second  Amendment  to  Lease  dated  January  5,  1996,  a  Third
               Amendment to Lease dated  January 5, 1996, a Fourth  Amendment to
               Lease dated  December 23, 1996, a Fifth  Amendment to Lease dated
               July 7, 1997,  a Sixth  Amendment  to Lease dated July 7, 1997, a
               Seventh  Amendment to Lease dated  September  19, 1997, an Eighth
               Amendment to Lease dated September 19, 1997, a Ninth Amendment to
               Lease dated  September 19, 1997, a Tenth Amendment to Lease dated
               December 23, 1997, and an Eleventh Amendment to Lease dated March
               31, 1998.

2.  CONFIRMATION OF THE COMMENCEMENT DATE WITH REGARD TO THE OCCUPANCY BY TENANT
OF SUITE.  Landlord and Tenant confirm that the  Commencement  Date of the Lease
with regard to the Expansion Premises is ___________, 20___.

     Landlord and Tenant have executed this  Commencement  Date  Agreement as of
the date set below.

Tenant:                                              Landlord:
Data Transmission Network                   LAFP-SP, Inc.
Corporation, a Delaware corporation

By:/s/ Greg T. Sloma                        By:Lowe Enterprises Investment
   ---------------------------                 Management, Inc.
   Greg T. Sloma
Its:President and COO                       Its:  Authorized Agent

Date:5/4/99                                 By:____________________________

                                            Its:____________________________

                                            Date:___________________________




                                       11
                                     -289-


                          THIRTEENTH AMENDMENT TO LEASE

         THIS  THIRTEENTH  AMENDMENT  TO  LEASE  (the  "Amendment")  is made and
entered  into this 18th day of  October,  1999,  by and between  LAFP-SF,  Inc.,
successor  in  interest  to  The   Prudential   Insurance   Company  of  America
("Landlord"),  having  an  office  c/o Lowe  Enterprises  Colorado,  Inc.,  1515
Arapahoe  Street,  Tower  III,  Suite  900,  Denver,  Colorado  80202,  and Data
Transmission Network Corporation ("Tenant"), having an office at 9110 West Dodge
Road, Suite 200, Omaha, Nebraska 68114.

                                    Recitals

A.       The  Prudential  Insurance  Company of America and Tenant  entered into
         that  certain  Lease  dated  as  of  May  2,  1995.  Subsequently,  The
         Prudential  Insurance  Company of America  and Tenant  executed a First
         Amendment to Lease dated  September  29,  1995,  a Second  Amendment to
         Lease  dated  January 5, 1996,  and a Third  Amendment  to Lease  dated
         January 5, 1996, and thereafter,  Landlord and Tenant executed a Fourth
         Amendment to Lease dated December 23, 1996, a Fifth  Amendment to Lease
         dated July 7, 1997,  a Sixth  Amendment  to Lease dated July 7, 1997, a
         Seventh  Amendment  to  Lease  dated  September  19,  1997,  an  Eighth
         Amendment to Lease dated September 19, 1997, a Ninth Amendment to Lease
         dated September 19, 1997, a Tenth Amendment to Lease dated December 23,
         1997, an Eleventh Amendment to Lease dated March 31, 1998 and a Twelfth
         Amendment  to Lease dated May 12,  1999.  The lease and all  amendments
         thereto are hereinafter referred to as the "Lease".

B.       Pursuant to the Lease, Tenant occupies Suites #175A, #175B, #100, #101,
         #110, #130,  #200,  #300,  #301,  #310, #315, #320, #325, #340,  #350A,
         #350B, #360, and #362, containing approximately 107,576 rentable square
         feet (the "Current  Premises"0 in the Building  known as Embassy Plaza,
         located at 9110 West Dodge Road, Omaha, Nebraska pursuant to the Lease.

C.       All  capitalized  terms not  defined  herein  shall  have the  meanings
         ascribed to them in the Lease.

         NOW,  THEREFORE,  in consideration of the foregoing  promises and other
good and  valuable  considerations,  the  receipt and  sufficiency  of which are
hereby acknowledged, the parties hereto covenant and agree as follows:

         1. Installation of Generator.  Landlord shall allow Tenant to construct
and install a generator,  diesel tank and related equipment on a pad site within
the Building  Complex as more  particularly  described on the site plan attached
hereto and incorporated  herein by this reference as Exhibit A (the "Pad Site"),
provided that all governmental  authorities having  jurisdiction  thereover have
granted the necessary approvals and/or licenses therefor. Tenant shall construct
and install the generator and related  equipment in strict  accordance  with the
attached plan which has been approved by Landlord.  All construction  work shall

                                       1
                                     -290-
<PAGE>

be supervised  by Tenant and overseen and approved by Landlord,  it being agreed
that Tenant shall bear all responsibility for the completion of the construction
and installation of the generator,  and that Landlord shall in no event bear any
responsibility  therefor.  All costs  incurred in the pursuit and  obtainment of
approvals or licenses, and the costs of construction,  installation, maintenance
and removal of the generator shall be at Tenant's sole expense. Tenant agrees to
indemnify  and hold  Landlord  harmless  from any  damages or losses  whatsoever
occasioned by Landlord as a result of such installation, maintenance or removal.
At the end of the Lease term,  Tenant shall remove the generator and all related
components thereto,  and shall return the Pad Site and any other portions of the
Building  Complex to the condition that existed prior to the installation of the
generator.

         2. Use  Restrictions.  Tenant shall run the  generator  only: i) in the
event that there is a power  failure in the Building and ii) to test the system,
provided  that such  testing  shall occur only on  weekdays  before 7:00 a.m. or
after 7:00 p.m. or after 1:00 p.m. on Saturdays.

         3. Reaffirmation of Lease. Except as herein specifically  provided, the
terms and conditions of the Lease shall  continue in full force and effect.  The
parties  hereto hereby  reaffirm and ratify all covenants,  representations  and
warranties in the Lease as amended by this Amendment.

         4. Binding  Effect.  This Amendment  shall be binding upon and inure to
the benefit of the parties hereto, their successors and assigns.

         IN WITNESS WHEREOF, Landlord and Tenant have executed this Amendment as
of the day and year first above written.

Tenant:                                 Landlord:

Data Transmission Network               LAFP-SF, Inc.
Corporation a Delaware
Corporation

By: /s/ Greg T. Sloma                   By:  Lowe Enterprises Investment
   ------------------------------            Management, Inc.
    Greg T. Sloma                            Its: Authorized Agent

Its:  President and COO                 By:  /s/ Tom Rau
                                             ----------------------------------
                                             Tom Rau
                                        Its: Vice President

                                       2
                                     -291-





     Data Transmission Network Corporation (DTN(r)),  an electronic  information
and  communications  services  company  headquartered in Omaha,  Nebraska,  is a
leader in the delivery of time-sensitive  information  (NEWS...NOT  HISTORY(r)).
DTN is  committed  to  providing  comprehensive,  timely and  affordably  priced
information to our customers.  DTN's services are tailored to meet  subscribers'
needs and are valuable tools in managing business and personal affairs.

     The Company  began  operations in 1984,  went public in January  1987,  and
continues to evolve into a full-service  information provider and communications
network. DTN primarily distributes  information via small dish Ku-band satellite
and the  Internet.  Other  distribution  systems  include  FM  radio  side  band
channels,  TV cable,  direct  leased line  circuits,  wireless  pagers,  Fax and
e-mail.  Subscribers  receiving information via satellite utilize a DTN receiver
capturing  information around the clock and converting it to text,  graphics and
audio.

     Prior to 1992, DTN supported only a monochrome  receiver  system capable of
receiving  and  displaying  information.  In 1992,  the Company  introduced  the
Advanced  Communications  EngineSM (ACE) receiver that expanded the  information
and  communication  services  provided by the  Company.  DTN  receivers  contain
multiple processors for capturing,  manipulating and displaying  high-resolution
color video pictures,  graphics and text. In addition,  these processors provide
the ability to play audio clips and to utilize a phone  modem.  The ACE receiver
is equipped with an internal hard drive  allowing  processed  information  to be
stored,  archived  and then  displayed by using the built-in  control  panel,  a
keyboard or a mouse.

     In 1995,  DTN began  offering  services on the  Internet  and is  currently
pursuing  e-commerce  initiatives in the  agricultural,  weather,  financial and
energy  industries.  The Internet has become a significant part of the Company's
growth strategy for the future.

     DTN's  services  reach  subscribers  in the U.S.  and  Canada.  The Company
receives the majority of its revenues from the agricultural,  weather, financial
and energy industries. These industries and the services offered are profiled on
pages 10-13 of this report.

     DTN's  strategy is to focus on growing the  business  organically,  through
acquisitions and by pursuing  opportunities to provide services to niche markets
within  other  industries.   Led  by  customer  suggestions  and  demands,  Data
Transmission  Network  Corporation has engineered growth and evolution from what
we were - the first low-cost,  electronically delivered agricultural commodities
information  service,  to  what  we  are  today  - a  multi-faceted  information
provider,  utilizing  a full  range of  technological  communication  systems to
deliver the most valuable of commodities, timely information.


                                      -292-
<PAGE>
2       Financial Highlights

3       Five Years in Review

4       To Our Shareholders

8       Our Business

10      Our Services

14      Agricultural Services

18      Weather Services

24      Financial Services

28      Energy Services

30      Other Services

32      Selected Historical Consolidated Financial Data

33      Management's Discussion and Analysis

43      Management's Responsibility for Financial Statements and Independent
        Auditor's Report

44      Consolidated Financial Statements

48      Notes to Consolidated Financial Statements

57      Quarterly Data and Trading Information

58      Board of Directors and Corporate Officers

                                       1
                                     -293-
<PAGE>



Financial Highlights
<TABLE>
<CAPTION>                                                                              Percent
                                                       1999             1998            Change
Operating Results (year ended)
<S>                                               <C>                <C>                  <C>
 Revenues                                         $ 166,508,602      $ 148,986,346        12 %
 Operating cash flow1                                57,883,986         53,013,798         9 %
 Cash provided by operating activities2              51,173,936         42,415,869        21 %
 Net loss3                                           (3,706,691)        (3,742,759)        1 %
 Diluted loss per share3                          $        (.32)     $        (.33)        3 %
Balance Sheet Data (at year end)
 Total assets                                     $ 184,003,178      $ 197,185,082        (7)%
 Long-term debt (including current portion)         103,119,999        122,248,540       (16)%
 Shareholders' equity                                37,496,920         32,149,886        17 %
 Book value per share                             $        3.13      $        2.79        12 %
Other Operating Data (year ended)
 Total subscribers                                      166,900            159,300         5 %
 Annualized subscriber retention rate                    81.3 %             80.6 %         1 %
 Net development costs4                           $   7,274,692      $   6,533,965        11 %
 Operating cash flow from core services5          $  65,111,052      $  59,434,670        10 %
 Property and Equipment capital expenditures      $  23,199,839      $  29,145,219       (20)%
 Free cash flow6                                  $  25,863,671      $  15,418,911        68 %
 Debt leverage ratio7                                       1.8                2.3       (22)%
As a Percent of Revenue (year ended)
 Operating cash flow1                                    34.8 %             35.6 %
 Cash provided by operating activities2                  30.7 %             28.5 %
 Operating cash flow from core services5                 39.4 %             40.8 %
 Free cash flow6                                         15.5 %             10.3 %
 Depreciation and amortization                           32.3 %             32.8 %
 Interest expense                                         5.3 %              5.7 %

</TABLE>
[FN]

1    Operating   cash  flow   (EBITDA)   defined  as  operating   income  before
     depreciation   and   amortization   expense.   Excluding  the  $.7  million
     non-recurring  severance  costs and $4.1  million loss on the sale of radar
     operations in 1999 and the $5.8 million  non-recurring  satellite  costs in
     1998,  operating cash flow for 1999 would have been $62.7 million  compared
     to $58.8  million  for the same  period of 1998.  As a percent of  revenue,
     operating  cash flow  would  have  been  37.7% and 39.5% for 1999 and 1998,
     respectively.

2    Excluding the $.7 million  non-recurring  severance  costs and $4.1 million
     loss  on the  sale  of  radar  operations  in 1999  and  the  $5.8  million
     non-recurring   satellite   costs  in  1998,  cash  provided  by  operating
     activities  would have been $56.0 million in 1999 compared to $48.2 million
     for the same  period of 1998.  As a percent of  revenue,  cash  provided by
     operating  activities  would  have been  33.6% and 32.4% for 1999 and 1998,
     respectively.

3    Excluding the non-recurring costs of $.7 million related to severance costs
     ($.5  million  net of  tax)  and the  $4.1  million  loss on sale of  radar
     operations  ($2.6  million  net of tax) in 1999  and the  $5.8  million  of
     satellite  costs ($3.7 million net of tax) and before the $1.7 million debt
     extinguishment  costs ($1.1  million net of tax) in 1998,  the net loss for
     the 1999  would  have been $.6  million  or ($.05)  per share on a dilutive
     basis compared to net income of $1.0 million or $.09 per share on a diluted
     basis for the same period of 1998.

4    Net Development Costs defined as the sum of 1) market research  activities,
     2) hardware and software  development  and 3) the negative  operating  cash
     flow (prior to corporate  allocations plus interest) for the development of
     new services.

5    Core  services are services no longer in the initial  development  process.
     Operating  cash  flow  from  core  services  as a  percent  of  revenue  is
     calculated   on  core   services   revenue.   Excluding   the  $.7  million
     non-recurring  severance  costs and $4.1  million  on loss of sale of radar
     operations in 1999 and $5.8 million non-recurring  satellite costs in 1998,
     operating  cash flow from core  services  would have been $70.0 million for
     1999 compared to $65.2 million for the same period in 1998. As a percent of
     revenue,  operating  cash flow from core services would have been 42.4% and
     44.7% for 1999 and 1998, respectively.

6    Free cash flow defined as operating  cash flow  (EBITDA)  less property and
     equipment  capital  expenditures  and interest  expense.  Excluding the $.7
     million  non-recurring  severance  costs and $4.1  million  loss on sale of
     radar operations in 1999 and the $5.8 million non-recurring satellite costs
     in 1998,  free cash flow would have been $30.7 million for 1999 compared to
     the $21.2  million  for the same  period of 1998.  As a percent of revenue,
     free  cash  flow  would  have  been  18.4%  and  14.2%  for 1999 and  1998,
     respectively.

7    Debt leverage  ratio defined as total  long-term  debt  (including  current
     portion) divided by last twelve months  operating cash flow.  Excluding the
     $.7 million non-recurring  severance costs and $4.1 million loss on sale of
     radar operations in 1999 and the $5.8 million non-recurring satellite costs
     in 1998,  the debt leverage  ratio would have been 1.7 and 2.1 for 1999 and
     1998, respectively.
</FN>
                                       2
                                     -294-
<PAGE>

Five Years in Review


                              FIVE YEARS IN REVIEW
- --------------------------------------------------------------------------------
GRAPHS IN TABULAR FORM:

                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----

  Revenues
($ millions)              62.3      98.4      126.4     149.0     166.5


                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Operating Cash Flow
    ($ millions)          23.2      40.4      54.7      58.8*     62.7*
                                                        53.0      57.9



                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Operating Cash Flow
(percent of revenue)       37%       41%       43%       40%*      38%*
                                                         36%       35%*


                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Net Development Costs
    ($ millions)           3.7       5.3       5.2       6.5       7.3


                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Subscribers At Year End
      (thousands)         95.9      145.9     158.8     159.3     166.9


                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Subscriber Retention Rate
       (percent)          91.0      89.3      88.1      80.6      81.3


                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Annual Revenue
Per Subscriber
($ based on average
 subscribers)             700       775       830       937       1,021



                          1995      1996      1997      1998      1999
                          ----      ----      ----      ----      ----
Annual Operating Cash
Flow Per Subscriber
($ based on average
 subscribers)             260       318       359       370*      384*
                                                        333       355


*Pro-forma results before $5.8 million non-recurring satellite costs in 1998 and
$.7 million non-recurring severance costs and $4.1 million loss on sale of radar
operations in 1999.

                                       3
                                     -295-
<PAGE>

(Picture of the Executive Team)

     DTN  Corporate  Executive  Team (l-r):  Greg T. Sloma,  President and Chief
Operating  Officer;  Brian L. Larson,  Senior Vice  President,  Chief  Financial
Officer and Secretary; Joseph A. Urzendowski, Vice President of Operations

     "There have never been more exciting  opportunities  for our four divisions
to capture revenue in e-commerce and other growth areas." - Greg T. Sloma

To Our Shareholders

     As you may have read or heard, on March 3, 2000, the Company entered into a
definitive agreement with Veronis,  Suhler & Associates  Communications Partners
III,  L.P.  (VS&A III)  whereby  VS&A III will make a tender offer to all of the
Company's  shareholders  at a price of $29.00  per share.  The  Tender  offer is
subject to the tender of at least 90% of the Company's  outstanding shares as of
March 1, 2000.  If less than 90% of the  outstanding  shares are  tendered,  the
Company  will merge with an  affiliate  of VS&A III at the same per share price.
Holders of over 50.1 percent of the Company's  outstanding shares have agreed to
accept  the  tender  offer  and  vote to  approve  the  merger.  Closing  of the
transaction  is  subject  to  government  and  shareholder  approvals  and other
customary  conditions,  and is  expected to occur  during the second  quarter of
2000.  With that said, I will now discuss what the Company  accomplished  during
1999,  both  financially  and   operationally,   while  the  "Shareholder  Value
Enhancement" process was proceeding.

     In keeping  with my previous  three  quarterly  reports in 1999,  I plan to
discuss  subscribers  and  revenues,  operating  cash flow  (EBITDA),  operating
income,  other  income and  expenses,  net  income,  free cash flow and our debt
leverage ratio. In addition, I will review our operations including new services
we offered  in 1999 and  acquisitions.  The last  topic  will be the  process on
enhancing shareholder value.

SUBSCRIBERS AND REVENUES
Total  subscribers  increased  5% to 166,900 at December  31,  1999  compared to
159,300 at December 31, 1998.

Total Internet subscribers were 19,000 at December 31, 1999 compared to 4,700 at
December 31, 1998.

Total  revenues  for 1999  increased  12% to $166.5  million  compared to $149.0
million for 1998.

Total  subscription  revenues per subscriber per month for 1999 was $68 compared
to $62 for 1998.

Subscription revenue per subscriber per month for all new subscription sales for
1999 was $74.

                                       4
                                     -296-
<PAGE>

OPERATING CASH FLOW
Operating cash flow (EBITDA) for 1999 increased 9% to $57.9 million compared
to $53.0 million for 1998.

Excluding  non-recurring  costs  and  the  loss on  sale  of  radar  operations,
operating cash flow for 1999 would have  increased 7% to $62.7 million  compared
to $58.8 million for the same period of 1998.

Operating cash flow margin (EBITDA  margin) for 1999 was 35% compared to 36% for
1998.

Excluding  non-recurring  costs  and  the  loss on  sale  of  radar  operations,
operating  cash flow  margins  for 1999 would have been 38%  compared to 40% for
1998.

Excluding non-recurring costs, the loss on sale of radar operations and Kavouras
operating results, operating cash flow margins for 1999 and 1998 would have been
43%.

OPERATING INCOME
Operating income (EBIT) for 1999 and 1998 was $4.2 million.

Excluding non-recurring costs and the sale of radar operations, operating income
for 1999 would have been $9.0 million compared to $10.0 million for 1998.

Operating income excluding non-recurring costs, the sale of radar operations and
amortization  expense from acquisitions  increased 18% to $21.7 million for 1999
compared to $18.4 million for 1998.

NET INCOME

The net loss for 1999 was ($3.7) million or ($.32) per share on a diluted basis,
compared to a net loss of ($3.7)  million or ($.33) per share on a diluted basis
for 1998.

Excluding the non-recurring costs related to severance and the satellite outage,
the loss on the sale of radar  operations  and the one-time debt  extinguishment
charge,  the net loss for 1999 would have been ($.6) million or ($.05) per share
on a diluted basis compared to net income of $1.0 million or $.09 per share on a
diluted basis for 1998.

FREE CASH FLOW

Free cash flow  (defined as operating  cash flow  (EBITDA) less property and
equipment  capital  expenditures and interest expense) for 1999 increased 68% to
$25.9  million  compared to $15.4  million for 1998.

Property  and  equipment  capital  expenditures  for 1999 were down 20% to $23.2
million compared to $29.1 million for 1998.

Included in 1999 and 1998 were $8.6 million and $3.1 million,  respectively,  of
one-time  expenditures  for  satellite  equipment  and new product  initiatives.
Excluding  non-recurring  costs,  the  sale on  radar  operations  and  one-time
property and equipment capital expenditures,  free cash flow for 1999 would have
increased 62% to $39.3 million compared to $24.3 for 1998.

DEBT LEVERAGE RATIO
The  Company's  debt  leverage  ratio is  defined  as total  long-term  debt
(including  current  portion)  divided by the last twelve months  operating cash
flow  (EBITDA).

The  Company's  debt  leverage  ratio was 1.8 for the twelve  month period ended
December 31, 1999 compared to 2.3 for the twelve month period ended December 31,
1998.

OPERATIONS REVIEW
     During 1999, we focused our energies and  resources on our core  businesses
of Agriculture,  Weather, Financial Services and Energy. The agriculture economy
remained  weak due to low  commodities  and  livestock  prices.  We continued to
integrate the Kavouras  weather  business  into our business and began  offering
services for the middle markets and the Internet.  Our Energy business continued
to grow through  increased  communication  (messaging)  revenues.  The Financial
Services  business  focused on  providing  Internet  services to the  individual
investor  markets and began offering  subscribers  the ability to trade equities
using our services.

     We continued  to focus on growing  revenues,  operating  cash flow and free
cash flow. Our efforts produced  positive results as the summaries  demonstrate.
Subscription,  additional  services and communications  revenues all set records
and this growth  produced  excellent  operating cash flow and free cash flow (as
defined by the Company). Our total revenues were up 12% for the year and we made
substantial  progress with our Internet  services.  Total revenues from Internet
subscribers  for 1999 grew 500% to $8.3  million  compared  to $1.4  million for
1998.

     Operating cash flow continued to grow and led to impressive  growth in Free
Cash Flow.  We have defined free cash flow as Operating  Cash Flow (EBITDA) less
property and equipment capital expenditures and interest expense. Free cash flow
grew 68% to $25.9 million in 1999, compared to $15.4 for 1998. More importantly,
free cash flow, excluding  non-recurring costs, the sale of radar operations and
one-time  property and equipment  capital  expenditures  was an impressive $39.3
million  for  the  current  year.   Operating   cash  flow  margins,   excluding
non-recurring  costs, the sale of radar  operations and our Kavouras  operations
continued to be very strong at 43%. On a final note, our core services operating
cash flow margins, excluding Kavouras operating results, non-recurring costs and
the loss on sale of radar  operations,  remained strong at 48% for both 1999 and
1998. This demonstrates that we have grown our businesses efficiently.

     Operating income and net income, excluding non-recurring costs and the sale
of radar  operations  were  down due to  higher  amortization  from  acquisition
activities. However, cash earnings (operating income before amortization expense
related to  acquisitions)  excluding  non-recurring  costs and the sale of radar
operations,  increased  18% for  1999  over  1998.  Our  balance  sheet  remains

                                       5
                                     -297-
<PAGE>

conservative  with a debt leverage ratio of 1.8. This ratio indicates  operating
cash flow could repay our bank debt in less than 2 years.

     We introduced  several new services and a strategic  alliance  during 1999.
The following is a brief description of these services and the alliance.

DTN Tradelink - An Internet based service for the produce,  floral, meat and
other  fresh  related  grocery  products.  This  service is an  electronic  data
interchange  (EDI) system that will link buyers and suppliers in these  markets.
This product will be released in stages to the markets.

StormSentry  PC - A new  weather  information  service  designed to provide
real-time,  single-site  NEXRAD  access on a PC. This product is the ultimate in
storm tracking technology and software that identifies  dangerous weather cells,
analyzes characteristics,  locations, speeds, directions, and estimated times of
arrival.

DTN Pro Shop - A weather  information service designed to provide instant access
to weather,  golf and sports  information in golf course pro shops. This service
contains weather  information  needed to operate a golf course in the safest and
most profitable way.

WX.COM  (www.WX.com) - WX.COM  provides  viewers with a dynamic and  interactive
experience including the ability to easily overlay full-motion weather maps with
state and county lines,  highways and other familiar  landmarks to track weather
patterns.  WX.COM is an Internet service featuring TV quality,  3-D graphics and
weather  information  including  interactive  weather,  radar,  storm  tracking,
current conditions, weather warnings and much more.

Preferred   Interactive  -  An  alliance  was  formed  with  DTN  and  Preferred
Interactive Inc. to provide one of the fastest, most efficient and comprehensive
Internet  stock  trading  and  information  services  available  for  individual
investors and active traders.  DTN.IQ  customers  (www.DTNIQ.com)  receive fully
integrated access to Preferred Trade, a real-time low-cost, windows-based online
trade order entry and execution system for investors and traders.

Cyber  Corp - An  alliance  was  formed  with  DTN and  Cyber  Corp  to  deliver
electronic trading using CyberXchange. CyberXchange searches all possible market
makers and all major electronic  communications  networks (ECNs), scanning their
bids and asks,  before forwarding the order to the trader with the best price at
that  moment.  CyBerCorp's  trade  execution  technology  offers  direct  access
connections to six ECNs, an unprecedented number.

DTN FinWin - A free page of market news,  quotes and other financial content
for  web  sites  (www.finwin.com).   DTN  will  generate  revenue  from  selling
advertising  space on these  pages.

     Our  management  team is focused on making  acquisitions  that fit into our
operating strategies. The following is a list of our accomplishments for 1999.

Waterman Associates - In January, DTN acquired Waterman  Associates,  a business
engaged in creating,  assembling,  marketing and distributing information in the
natural gas and electric energy  industries.  This information is made available
to DTN  subscribers  as part of the DTN Natural Gas and Electric  services.  DTN
acquired Waterman Associates for $350,000 cash.

Paragon  Software,  Inc. - In March,  DTN completed the  acquisition  of Paragon
Software,   Inc.  (PSI)  for  $3,800,000  cash.  PSI  has  approximately   4,000
subscribers  receiving  real-time  streaming  (continuously  updating) quotes to
investors.  PSI provides  Internet  subscribers  with an affordable and flexible
real-time  quotes system that  includes such features as scrolling  ticker tape,
historical and intra-day charts and portfolio analysis under the name InterQuote
(www.interquote.com).

SmartServ Online, Inc. - In January, we announced a Letter of Intent whereby DTN
would merge with SmartServ Online, Inc. (SSOL).

     As you may recall in April  1998,  DTN  received  the  exclusive  rights to
market the Internet based financial services  information  products of SmartServ
Online and the Internet  information  distribution  technology.  These  services
include:  DTN.IQ,  a real-time  tick-by-tick  stock quote and news service,  and
TradeNet and BrokerNet,  real-time trading and account information  products for
the brokerage industry.  Through this alliance, DTN received the following: i) a
proven  Internet  real-time  quote and news service  providing  convenience  and
advanced  features  for the user;  (ii) an  electronic  trading and  back-office
system designed for the small and mid-sized  brokerage  firm;  (iii) access to a
talented  development  team to support  and enhance  the new  products  and (iv)
SmartServ Online subscribers.

     After further  review by both  companies,  we decided to extend our current
arrangement with SSOL instead of purchasing the company. Under the new terms DTN
paid $5,458,000 to SSOL for an exclusive perpetual, worldwide license, to ensure
a strong,  long-term  business  alliance.  SSOL provides online  programming for

                                       6
                                     -298-
<PAGE>

future  enhancements  to products  and  services  as well as server  support for
Internet  products.   DTN  provides  marketing,   sales,  customer  service  and
administration  support.  Both DTN and SSOL  believe the new  exclusive  license
agreement best serves the long-term  goals of the  companies.  The new agreement
solidifies  the business  relationship,  started in April 1998,  which  launched
DTN.IQ (www.DTNIQ.com), our very successful real-time streaming quotes, news and
information service.

FlightBrief  - In  November,  DTN  acquired  the  assets of  FlightBrief  Online
Service,  Inc.,  an Internet  weather  service for the aviation  industry.  This
purchase  included  two  web  sites,   www.weatherconcepts.com   which  provides
real-time  weather  graphics  to  aviation,  marine,  farming  and  construction
subscribers  and  www.flightbrief.com  which  provides  real-time  graphics  and
interactive  flight planning,  weather  briefings,  airport  databases and other
resources for aviation subscribers. The target market is 600,000 aircraft owners
and pilots in the United States. We paid approximately $370,000 for the services
and 3,300 subscribers.

     In addition to making  strategic  acquisitions  and acquiring the SmartServ
license we also made an investment in a new company. In December, DTN and Photon
Research  Associates,  Inc. (PRA) formed the joint venture  company,  EarthScan
Network, Inc. (EarthScan).  EarthScan delivers the most sophisticated  satellite
images    available   to   farmers   and   suppliers    through   the   Internet
(www.EarthScan.com). DTN committed to a $3.0 million investment in EarthScan.

     During  December  we  divested  ourselves  of the radar  operations  of our
Kavouras, Inc. subsidiary. In 1998 we acquired Kavouras, Inc. which included the
manufacture  and sale of weather radar  equipment.  In December of 1999, we sold
these radar operations to Radtec Engineering, Inc. of Colorado for $1.3 million.
We recorded a loss of $4.1 million for the sale of assets,  severance  and other
operation  closing costs. The sale of these operations  allows the Kavouras team
to focus on providing the industry with the most  advanced  weather  display and
data services available.

     We  continue  to  explore  growth   opportunities  and  look  for  possible
acquisition  targets.  We are pursuing  e-commerce and other  initiatives in our
four main  businesses.  These  initiatives come in all shapes and sizes. We will
pursue vigorously those opportunities with the best "fit" and future potential.

    At this time, I would like to thank DTN  employees  and their  families for
their commitment and hard work during 1999. In addition, a thank you is in order
to  customers,  shareholders,  financiers  and  suppliers  for  their  continued
support.

                                            Very sincerely yours,



                                            Greg T. Sloma
                                            President and COO


The Company  continually  identifies leading edge technologies to best serve its
diverse group of customers.

(Photograph)

From left to right:  James L.  Marquiss,  Senior Vice  President and Director of
Business  Research and Product  Development;  Scott A. Fleck, Vice President and
Director of Engineering;  Raymond E. Johnson,  Director of Broadcast Operations;
Kurt Sowers, Broadcast Operations Manager.

                                       7
                                     -299-
<PAGE>

Our Business

Business Review

     Data Transmission  Network  Corporation (DTN, the Company) began operations
in April 1984 and continues to provide comprehensive, time-sensitive information
and communication  services primarily for the agricultural,  weather,  financial
and energy industries.  DTN grew to 166,900 subscribers  throughout the U.S. and
Canada at the end of 1999. A review of these  industries  and services  with the
year's highlights are discussed in this report.

     The Company's  subscription services are targeted at niche business markets
and  designed  to be  timely,  simple  to  use  and  convenient.  The  Company's
distribution  technology  provides  an  efficient  means  of  sending  data  and
information  from point to  multi-point.  The  development  and  enhancement  of
cost-effective   distribution  methods  including  the  Internet  and  satellite
delivery,  plus a total commitment to customer  service and information  quality
has enabled the Company to become a major player in the communications industry.

     The  Company  continues  to take  advantage  of  engineering  and  software
advancements  for  developing  and  improving  distribution  in an exciting  and
growing  industry.  In 1999,  DTN made great  strides in the area of  e-commerce
which will also be discussed in detail in this report.

Information Distribution Technologies

     DTN supports several  information  distribution  technologies  allowing the
distribution,  reception and display of  information.  The primary  technologies
used are small dish Ku-band satellite (Ku) and the Internet.  Other technologies
used are Cable TV (VBI),  e-mail,  FAX, direct leased line circuits and wireless
technology.

     The Company  provides the equipment  necessary for  subscribers  to receive
certain services using Ku, FM or VBI technologies. This equipment includes a DTN
receiver,  a video monitor,  FM antenna or a small 30" Ku-band satellite dish. A
keyboard,  mouse and printer may be provided  depending on the  service.  DTN is
responsible for the normal maintenance and repair of subscriber  equipment.  DTN
Internet  subscribers  use their own  personal or business  computers to receive
information  and  e-commerce  services.  In 1992,  the  Company  introduced  the
Advanced Communications Engine (ACE) receiver, a color graphics receiver system.
This  system  expanded  the  Company's   ability  to  provide   information  and
communication services using satellite technology.

     The ACE receiver  contains  multiple  processors.  One is dedicated to data
communications  and  storage.  The second  processor is for  manipulating  data,
interacting  with  the  user  and  displaying  high-resolution  color  pictures,
graphics  and text. A third  processor  enables the unit to play audio clips for
weather forecasts,  voice  advertisements or audio alarms set for when a futures
contract or stock price reaches a pre-set price. In addition, this processor can
send and retrieve  information by using an internal  modem  connected to a phone
line. Additional processors may be present, as necessary, based on the method of
information distribution technology used, such as satellite, VBI, etc.

     The ACE receiver can also  download  information  to a printer or computer.
This  receiver  is  equipped  with an  internal  hard drive  allowing  processed
information  to be stored,  archived  and  displayed.  The  receiver's  built-in
control panel,  keyboard or mouse allows  subscribers to conveniently  view this
information.

     One  of  the  unique  aspects  of the  Company's  information  distribution
technology  is the computer  software  developed by the Company for use with the
broadcast  system that feeds data to the ACE  receivers.  This software  manages
information from a wide array of input sources,  runs routines,  sets priorities
and then  initiates  transmission  to the satellite.  The software  provides the
capability to individually  address each receiver unit placed with a subscriber.
This  permits  the  Company  to  transmit  specific  information  to a  specific
subscriber or group of subscribers.

     DTN began  offering  services  via the  Internet  in 1995 and now  provides
Internet services for the four main divisions - agriculture,  weather, financial
and energy.  In 1998,  the Company  expanded its Internet  initiatives  into the
e-commerce  arena,  adding online  trading  capabilities  to real-time  Internet
financial service products. In 1999, the Company began new initiatives within

Timeline of History of DTN Services & Distribution Technology Advancements

<TABLE>
<CAPTION>
History of DTN Services         Year            Distribution of Technology Advancements         Year

<S>                             <C>             <C>                                             <C>
Agricultural Services Began     1984            FM Radio Side Band                              1984
DTN Goes Public (NASDAQ:DTLN)   1987            Ku-Band Satellite                               1989
Financial Services Began        1989            ACE Color Receiver Fax                          1992
Energy Services Began           1991            Cable TV (VBI)                                  1994
Weather Services Began          1995            Internet Services Began                         1995
                                                Direct Leased Lines Wireless                    1998
                                                E-Commerce Services                             1998
                                                Online Stock Trading                            1999
                                                Free Interactive Web Sites                      1999

</TABLE>

                                       8
                                     -300-
<PAGE>

the cash grain and  livestock  commodities  and futures  business as well as for
perishable products such as meat, produce and floral. The Company also announced
its interactive, advertising based weather site (WX.COM) in 1999. These and more
will be discussed later in this report.

     In 1998,  the Company  began  delivering  services to customers  via direct
leased line  circuits.  This gives  customers  in major  metropolitan  areas the
ability to receive the Company's  information  where options,  such as satellite
dishes, are impractical. In many instances, this technology provides a redundant
delivery method to insure maximum availability of the Company's information.

     The  following  is a summary of  subscribers  by  information  distribution
technology at December 31, 1999.



Information Distribution Technologies         Subscribers

Ku-Band Satellite                               142,600
Internet                                         19,000
Leased Lines                                      1,600
VBI                                                 800
FM Radio Side Band                                2,900
                                                -------
Total                                           166,900


     The Company has approximately 15,000 customers receiving  information using
Fax technology. The e-mail business is primarily a subscriber (an e-mail source)
communicating specific messages to a group of subscribers.  There are over 1,200
e-mail sources delivering over 35,000 pages of information to subscribers daily.

Service and Equipment Revenue

     The  Company's  revenue  is  derived  primarily  from six  categories:  (1)
monthly,  quarterly or annual subscriptions,  (2) equipment sales (3) additional
(optional) services, (4) communication services, (5) advertising and (6) service
initiation fees. The percentage of total revenue for each category over the last
three fiscal years was:

                                                       1999     1998     1997

Subscriptions                                           80 %     80 %     80 %
Equipment Sales                                          4 %      3 %      -
Additional Services                                      5 %      5 %      5 %
Communication Services                                   8 %      7 %      8 %
Advertising                                              2 %      3 %      3 %
Service initiation fees                                  1 %      2 %      4 %


[FN]

(1)  Subscription  revenue is generated  from monthly,  quarterly or annual fees
     for one of the  Company's  services.  The  Company  offers  a  discount  to
     subscribers who pre-pay their subscription annually. A more detailed review
     of each service is found later in this report.

(2)  A unit of DTN  Kavouras  Weather  Services  generated  equipment  sales  of
     weather  systems,  workstations  and weather  radar  systems as well as the
     manufacturing  of small  and  large  Doppler  radar  systems.  The  Company
     announced the sale of their radar business to Radtec  Engineering,  Inc. in
     December 1999.

(3)  Additional  services are offered to  subscribers  on an "a la carte" basis,
     similar to premium channels on cable TV. A third party provides information
     for these services with DTN receiving a share of the  subscription  revenue
     paid by the subscriber.  Additional  services revenue  continues to grow in
     total dollars at a rate commensurate with the overall growth of the Company
     due, in part, to new technological innovations using the Internet.

(4)  The  Company   sells   communication   services   allowing   companies   to
     cost-effectively  communicate a large amount of timely information to their
     customers or field offices.  This category  includes revenue generated from
     FAX and e-mail services.  Communications revenue continued to grow in total
     dollars and management  believes this area offers  opportunities for future
     growth.

(5)  Advertising  space is sold and  interspersed  among  the  pages of news and
     information,  similar to a  newspaper  or  magazine.  The  advantage  of an
     electronic  advertisement over typical print media is the ability to change
     or replace the  advertising  message  quickly and as  frequently  as market
     conditions dictate.  Advertising revenue was down slightly due primarily to
     the weak ag  economy.  This  was  somewhat  offset  due to  subscriber  and
     subscription  revenue  growth as well as the addition of new services  with
     available advertising space.

(6)  Service   initiation  fees  are  one-time  charges  for  new  subscriptions
     depending on the service and the information distribution  technology.  DTN
     also charges an initiation fee for those subscribers who convert to another
     service (i.e., from a monochrome FM to a Ku color service).
</FN>
                                       9
                                      -301-
<PAGE>


Our Services

The Agriculture Industry

DTN  AgDaily(r)/DTN   FarmDayta(r)  provides  agricultural  market  information,
delayed  commodity  futures and options  quotes,  local cash grain and livestock
prices, regional and weather updates and a variety of daily analysis, commentary
and news affecting grain and livestock prices.

DTN AgDayta  (www.agdayta.com)  provides an Internet solution combining the best
of DTN AgDaily and DTN FarmDayta for up-to-date  agricultural weather,  markets,
news and commentary, quotes, local cash grain and livestock prices.

DTN Ag1.com (www.ag1.com) offers a unique, Internet-based, personalized business
plan  that  incorporates  discounted  inputs,  financing,   marketing,  personal
insurance,  tax and estate planning and crop revenue insurance services into one
program, "Your One Resource".

DTN Pro  SeriesSM/DTN  FarmDayta Elite Plus(r)  provides  services with advanced
information  sources for ag  producers,  agribusinesses  and  commodity  traders
requiring extensive information to be customized for their specific needs.

DTNstant(r)  provides  real-time  futures  and  options  quotes,   comprehensive
analytics and  real-time  commodity  news from Bridge,  Reuters and Future World
News as well as  proprietary  cash market  information  for the ag sector.  This
service also includes all the information found on DTN Ag Daily.

DTN Fresh,  an  expansion  of the DTN PROduce  service,  provides  comprehensive
weather, pricing, news and transportation  information as well as e-commerce and
electronic data interchange (EDI) solutions for those involved in the buying and
selling of perishable commodities. It includes two business units, DTN Tradelink
and DTN Fresh Information Services.

DTN  Cotton  Network  provides  an  electronic  marketing  system for the cotton
industry. The service allows gins, brokers, buyers, and warehouses to share data
allowing fast and accurate marketing and accounting of cotton offered and sold.

DTNironSM provides an equipment locator and inventory management service for the
farm  implement  dealer.  It is  designed to allow  dealers to work  together in
locating, buying and selling used farm equipment with other dealers/subscribers.

Agricultural Joint Venture EarthScan  Network,  Inc.  (www.earthscan.com)  is an
agricultural  remote  sensing  tool that  delivers  year-round  farm  management
solutions.  By providing  crop  monitoring  and site  measurement  capabilities,
EarthScan is an  inexpensive  entry into  precision  agriculture  that  requires
nothing more than a personal computer and Internet access.

                                       10
                                     -302-
<PAGE>

The Weather Industry

DTN  Weather  Center  www.WX.com  is  DTN's  free  interactive  weather  website
providing TV quality,  3-D weather  graphics  including  international  weather,
radar, storm tracking, current conditions, weather warnings and more.

DTN Weather Center(r)/DTN Online Weather Center provides a comprehensive weather
information  system to meet the weather  information  needs of many  industries.
Subscribers to DTN Weather Center rely on accurate and easily accessible weather
information  as a critical  ingredient in operating,  operations  planning,  and
staffing decisions.

DTN  Aviation  CenterSM  provides  comprehensive  aviation  weather  and  flight
planning information  specifically for pilots, airports and Fixed Base Operators
(FBO's).

FlightBrief Online (www.flightbrief.com) provides real-time weather graphics and
interactive  flight planning,  weather  briefings,  airport  databases and other
resources for aviation subscribers via the Internet.

DTN  Broadcast  Weather  provides  comprehensive  local,  regional  and national
weather  forecasts  plus  national  and  international  news  for the  broadcast
industry.

DTN  Contractor  WeatherSM  is an easy to use  stand-alone  system  providing  a
complete  package of current weather,  forecasts and construction  related news.
Information  is accessed by using a mouse or keypad to select  pages viewed on a
super VGA color monitor.

DTN Transportation  Weather provides  time-sensitive and often critical,  local,
regional  and  national  weather  forecasts  for  transportation  professionals.
Subscribers  also  receive  information  through a pager or via  DTNonline,  DTN
Weather Center's Internet service.

DTN Turf ManagerSM  provides  weather  information to individuals and businesses
involved in  turf-related  operations  such as outdoor sports  facilities,  golf
courses,  lawn  maintenance,  landscaping  and sod farms.  The service  provides
chemical, weather and specialty information designed for turf management.

DTN Pro Shop provides  instant access to weather,  golf and sports  information.
The service contains all the weather information needed to operate a golf course
in the safest and most profitable way.

DTN Weather Safety Center provides  valuable weather  information,  warnings and
alerts to emergency  management  professionals and anyone who is responsible for
protecting  lives and property from the hazards of severe weather.  This service
couples  with  the  DTN  Weather  Alert  Paging  System  to  provide   immediate
notification of severe weather to alpha pagers.

StormSentry  PC is storm tracking  software that  identifies  dangerous  weather
cells,  analyzes their  characteristics,  their locations,  their speeds,  their
directions, their estimated times of arrival...all automatically.

Other  Specialty  Weather  Services are  provided  for the marine,  forestry and
travel industries which includes additional weather reports and maps targeted to
these industries.

DTN Kavouras Weather Services TritonTM RT is a real-time 3-D and 2-D weather and
news  graphics  animation  system  focused on, but not limited to, the broadcast
television  market.  This product uses weather data to create an informative and
exciting weather show.

MetWorkTM  FileServer  is a robust and dynamic  network  solution for  real-time
dissemination of meteorological information based on the versatile and efficient
NT format,  supporting  standard  Internet  communications  protocol and various
network configurations.

Storm ProTM is a workstation  that  integrates  real-time  Doppler weather radar
with a  geographic  information  data system to create an accurate  display with
broadcast-quality appearance. The display can be individualized for a unique and
defining look important in the television market.

StormWatch(r) is customizable  software that monitors either a weather wire or a
DTN Kavouras  MetWork  Fileserver  to generate  color-coded  maps and/or a crawl
message for important watch, warning or advisory weather situations.  StormWatch
also allows a television  station to edit and prioritize  information  for their
viewing areas.

SchoolWatchTM  is customizable  software for the Triton RT that helps television
stations  easily update,  prioritize  and display  late-start and school closing
information.  This software can also be configured  to update  information  on a
station's Web site.

Data and Customizable  Forecasting  Services  provides a broad range of standard
data for a wide  variety of markets and  24-hour,  365 days a year  coverage for
tailor-made forecasts to meet customers' special needs.

                                       11
                                     -303-
<PAGE>

The Financial Service Industry

DTN Financial Services

DTN.IQ and Interquote  (www.DTNIQ.com and  www.interquote.com)  use cutting edge
Internet  technology  to deliver two distinct  services for online stock trading
with  tick-by-tick  quotes,  full-text  news,  intraday and  historical  charts,
portfolio manager, alerts and more, for individual and professional investors.

DTN FinWin  (www.finwin.com)  is a customizable window of financial quotes, news
and  charts  for web  sites.  FinWin is free for sites  that  generate a minimum
amount  of  traffic  or for a  monthly  subscription  without  advertising.

DTN Real-Time(r)  provides  real-time quotes on more than 260,000 stocks,  stock
options,  commodities,  and indexes, plus news, earnings, and economic data. The
Service  provides  Nasdaq Level II,  intraday and historical  charts,  portfolio
tracking  and  more  using  third-party  software  or DTN's  free  Windows-based
application.

DTN SPECTRUM(r)  provides delayed quotes,  plus business news, economic data and
financial  information  with  charting  capabilities.  Data  is  available  on a
stand-alone  system  with  user-programmable  pages or via PC using  third party
software.

DTN SPECTRUM(r)  R-T provides the same  information as DTN SPECTRUM with futures
updated in real-time.

DTN    FirstRate(r)    provides    wholesale    mortgage    rates    and    U.S.
Agency/Mortgaged-Backed  Securities  prices as well as delayed quotes on stocks,
futures and futures options, plus market commentary,  business news and economic
reports.

DTN  FirstRate+(r)  provides the same information as DTN First Rate and includes
coverage of the U.S. Treasury market, live  Mortgage-Backed  Securities pricing,
FNMA and FHLMC cash pricing, mortgage industry analysis, plus real-time Treasury
quotes, futures and futures options.

National Datamax Services
RepCenter (www.repcenter.com) offers Broker/Dealers a secure Internet site where
their representatives can access news, quotes,  charts, home office information,
business forms, commission reports and client prospect files.

ProSource  provides  portfolio,  contact and  business  management  software for
financial  planners,  including  downloads of client  information and the Mutual
Fund Manager and Variable Annuity Manager with monthly updates.

ProSource  Premier  includes  the features  found in ProSource  plus tracks most
types of investments and generates  presentation-quality  portfolio reports.  It
also creates business reports and is customizable for business networks.

Mutual Fund Manager  software allows  user-defined  analysis on more than 10,000
equity,  bond and money  market  mutual  funds,  with  performance  data updated
monthly or quarterly in seventy data fields for each fund.

Variable Annuity Manager provides  searchable  performance data for analysis and
comparison on more than 4,000  variable  annuities,  variable life  sub-accounts
updated monthly or quarterly.

Stock & Industry  Manager  provides an analysis program with fundamental data on
6,000  stocks and 99  industries.  Data is updated  monthly or  quarterly at the
customer's choice.

                                       12
                                     -304-
<PAGE>

The Energy Industry

DTNergy(r) - Refined Fuels provides  terminal  prices,  alerts,  electronic fund
transfer  notifications and other communication services from Petroleum Refiners
to their customers (also DTN Subscribers).

DTNergy(r)  - Natural Gas and  Electricity  provides  instant or delayed  energy
options  and  futures  quotes from all energy  affiliated  exchanges  along with
weather, news and industry specific information.

ProphetX (www.fimi.com) provides access to DTNergy's real-time market data using
Financial Information  Management Inc.'s (FIMI)  client-service  software on the
Internet.

EnergyView  (www.energyview.com)  provides  access to DTNergy's  real-time  data
using  GlobalView's  client-service  software  on  the  Internet.  This  service
provides energy news and industry specific content for the International Markets
(Petroleum Argus, ISIS LOR, APPI, International Weather, etc.).

Other Services

DTNautoSM  provides a communication  and information  service for the automobile
industry including wholesale and retail values on new and used vehicles,  a used
car  inventory   locating   service  and  direct   communication   services  for
manufacturers and automobile auctions.

DTN InfoLink provides real-time news, weather,  sports and market information to
the grocery and transportation  industries delivered to public-use kiosks. These
kiosks  allow  interactive  coupon  redemption,  unique  promotions  and product
offerings and the  opportunity to integrate  customer  loyalty and frequent user
programs.

DAT  Services  provides an  information  communication  system for the  trucking
industry that provides load and truck matching on a database of 100,000 listings
updated daily.

TracElectric  provides an equipment  locator service for the electric  equipment
industry with over 100 pages of new, remanufactured, surplus and used electrical
equipment listings.

DTN Missing Children  Information CenterSM provides instant transmission of data
regarding children in danger to local, regional, national and Canadian outlets.

                                       13
                                     -305-
<PAGE>

Agricultural Services Revenues
in million of dollars


1995            1996            1997            1998            1999
- ----            ----            ----            ----            ----

44.0            69.7            87.6            88.3            85.1

                                       14
                                     -306-
<PAGE>

The DTN Agricultural Division consists of five major services:  DTN Ag Services,
DTNstant,  DTN Fresh (an  expansion  of DTN  PROduce),  DTNiron  and DTN  Cotton
Network.  DTN  Ag  Services,   DTNstant  and  DTNiron  serve  DTN's  traditional
agricultural  marketplace,   consisting  of  grain  and  livestock  farmers  and
agribusinesses with interests in the commodity  distribution chain. DTN Fresh is
in the fresh produce and perishable vertical market with initiatives in meat and
floral. DTN Cotton Network serves cotton gins, warehouses and merchants. Because
of the diversity of these  markets,  the ag sales force has been  specialized to
best serve prospects and customers in each area.

     Approximately  80% of DTN ag  subscribers  are grain  farmers and livestock
producers,   with  the  balance   consisting   primarily  of  grain   elevators,
agri-businesses and financial institutions.  Subscribers to DTN Ag Services farm
nearly one third of the nation's  total cropland and market more than 50% of the
nation's cattle and hogs.

     The Internet has altered  access to  information  for ag  producers.  DTN's
focus on additional of proprietary content and analysis from a dedicated team of
ag journalists  continues to set DTN apart from "free" services.  Entry into the
e-commerce  arena,  which will be discussed in detail later in this report,  has
opened new doors of opportunity for the company's ag division.

     The main  competition  to the  agricultural  services is a  combination  of
printed  advisory  services,  radio,  television,   telephone,  other  satellite
information  services,   free  and  subscription  Internet  services,   and  old
information-gathering habits.

     There are over 200 premium services  available to agricultural  subscribers
to enhance their subscription. These services consist of advisory, informational
and  educational  products  as well as  newswire,  association  and free  add-on
services.  Premium  services  compliment  core  services  and add  value  to the
subscribers  who use them.  They are  marketed  to current  subscribers  through
telemarketing,  system wide and individual free trials, direct mail, billing and
equipment inserts as well as on screen advertising. Prices range from $2 to $400
per month.

     Communication services play an important role in providing a cost effective
means to reach a large number of targeted customers daily. DTN InfoMail provides
information for elevators, seed sales reps, agronomists, chemical sales reps and
technical advisors,  commodity brokers,  processing plants,  auction sale barns,
feedlots and anyone with a need to communicate to DTN  subscribers.  Over 40 new
InfoMail providers began messaging in 1999.

     Advertising  on DTN Ag  Services  is another  revenue-generator  for the ag
division. The "always on" interactivity, animation and scheduling flexibility of
the DTN systems are very appealing to  agri-businesses  such as seed  companies,
equipment dealers,  and ag chemical and finance businesses.  Advertising revenue
in 1999 topped $2.8 million.

E-Commerce Initiatives

     DTN's Ag Division is poised to leverage its  critical  mass of ag customers
by providing  easy and  affordable  access to Internet  services  with  numerous
e-commerce initiatives.

     The DTN Cotton  Network is involved in the  electronic  trade of cotton for
over two  years  and is a  combination  of  DTN's  proprietary  network  and the
Internet.

     DTN Fresh introduced DTN Tradelink,  which is involved with electronic data
interchange  (EDI)  in the  produce  and  perishables  industry.  DTN  Tradelink
software is used for price discovery and trading.

     In the fourth  quarter of 1999, an alliance with Ag1.com  created a program
to provide inputs, financing, marketing advice and insurance for producers. This
program has been well received in its early stages.

     DTNstant  expanded its  capabilities  to include cash grain trading between
its customers. The Tradelink software allows  producer-to-elevator grain trading
and will be sold along with InfoMail services.

     In addition, DTN Ag Services has negotiated an agreement with two brokerage
firms   to   allow    electronic    commodity    futures   order   entry.    The
elevator-to-elevator   transactions   as   well   as  the   producer-to-elevator
transactions can be executed using DTN ACE receivers or the Internet.

     In December 1999, DTN and Photon Research  Associates,  Inc. (PRA) formed a
joint-venture  company,   EarthScan  Network,  Inc.  Earthscan  Network  is  the
culmination  of a three  year  relationship  bringing  the  latest in  satellite
imaging and Internet technology to give the agricultural industry  unprecedented
capability to manage risk and maximize return.

DTN AgDayta

     DTN   Ag   Services'   leading   edge   Internet   service,   DTN   AgDayta
(www.agdayta.com), incorporates editorial content specifically for AgDayta along
with proprietary  content  developed for satellite  services.  Internet delivery
allows additional  functionality and supports  interactivity.  A newly developed
charting  package can be  downloaded  to the user's  personal  computer,  giving
impressive  charting  abilities  for both  futures  and  equities.  An  enhanced
Kavouras weather package offers real-time weather updates.  The result is DTN Ag
Services' most content rich agricultural service.

     DTN AgDayta serves as the foundation of Ag Services' e-commerce initiatives
on the Internet.  Ag1.com has been integrated with AgDayta to provide  producers
with inputs,  financing,  marketing plans,  and crop insurance.  Online cash and
futures  trading will be available on the AgDayta site. DTN AgDayta will provide
the customer with easy access to virtually  every tool needed  throughout the ag
production and marketing cycle.

DTN AgDaily/FarmDayta Satellite Services

     DTN  AgDaily is the  Company's  flagship  service.  Managed on an  Advanced
Communications  Engine (ACE)  satellite  receiver,  subscribers  receive delayed
commodity futures and options quotes, charts, local cash grain and livestock

                                       15
                                     -307-
<PAGE>

prices,  selected national,  regional and world weather updates and a variety of
daily analysis,  commentary and news affecting grain and livestock  prices.

     DTN Pro Series is an  advanced  version of DTN  AgDaily.  Functionality  is
enhanced with a high interest  window to view futures  quotes and options on any
page, keyword search,  customization of up to five pages of selected information
and a personal library serving as an archive segment. Packages of weather, news,
charts,  intraday commodity charting or stocks can be added to the core service.
DTN  Commodity  Pro,  Premier  and  Premier  Plus  combine  two or more of these
packages for a more extensive, customized service.

     DTN  FarmDayta II offers  similar  information  using the unique  FarmDayta
receiver for its delivery method.

     FarmDayta  One service was  introduced  to fill a special  customer  niche.
Content was  developed  to provide a lower price  point for the  first-time  DTN
customer.  This is the most economical color satellite option available from DTN
Ag Services.

     FarmDayta  Elite and Elite Plus  include all the DTN  FarmDayta II features
and content with added news, quotes, weather information and functionality.

1999 DTN Ag Services Highlights

     1999 was a year of  e-commerce  initiatives,  continuing  focus on customer
retention and exploration of new technologies.  The alliance with Ag1.com offers
Ag  Services'  customers  a  broad  range  of  value-added   services  including
financing,  marketing advice,  inputs,  crop insurance,  personal  insurance and
financial  planning.  DTN AgDayta will allow  Ag1.com to deliver  marketing  and
financial  products  along  with a  complete  ag  information  package  via  the
Internet.  This is the first step in  integrating  the AgDayta site into all the
DTN Ag Services e-commerce initiatives.

     DTN began testing a new Internet  delivery  method to provide  select small
rural  communities  the high speed Internet access  currently  available in most
urban areas.  Most rural  customers  are  interested  in the Internet but lack a
local Internet service provider and high speed phone lines.

     In 1999, DTN Ag Services formalized a new Customer Care program to identify
accounts in crisis and proactively  investigate and correct customer issues. The
result has been an increase in customer satisfaction and retention.

     DTN Ag Services  continues to be the leader in the  distribution  of market
news, analysis and weather for farmers. Through advancements on the Internet and
with e-commerce initiatives, DTN will provide customers with a one-stop-shop for
all of their business.

DTNstant

     DTNstant is a leader in providing delivery of real-time futures and options
quotes from the major  commodity  exchanges  and  headline  commodity  news from
multiple sources such as the Associated Press,  Reuters,  Futures World News and
Bridge.  The  service  also  provides  market-leading  cash grain and  livestock
information,  in-depth charting  capabilities plus all the information available
on the DTN AgDaily color service.

     In addition, the service provides information for the energy, metals, softs
(i.e.,  orange juice,  coffee,  cocoa),  transportation  and lumber  industries.
DTNstant uses compatible  software to allow the "pass thru" of data and graphics
into an individual's  personal computer or a company's local area network (LAN).
With this  capability,  a DTN ACE  receiver  can feed  information  to  multiple
users/traders  on the LAN. This "pass thru" software has opened many new markets
by  utilizing  information  distribution  within  a  customer's  LAN,  enhancing
analytical capabilities and the manipulation of DTN data in a "PC" environment.

     DTNstant  operates  in a very  competitive  market with many  providers  of
instant commodity quotes. The primary subscribers are commercial grain companies
and elevators,  feedlots,  commodity brokers and commodity speculators. No other
product  in the  industry  offers  a more  comprehensive  news  and  information
service.  Due to the  nature of this  industry,  the  Company  provides  on-site
service and installation by professional service technicians.

1999 DTNstant Highlights

     DTNstant experienced a dynamic 1999 with over half of the subscriber growth
occurring via LAN (Local Area Network) subscribers.  The individual  subscribers
access DTN data  through  third party  software  providers.  They receive all of
DTNstant's data combined with the technical  capabilities  that the software and
the computer's desktop allow.

     Due to the  location of many new DTNstant  subscribers,  the product is now
available  via  leased  landline  or the  Internet.  Both of  these  information
delivery methods are growing at a rapid pace.

     Over the last half of 1999, DTNstant actively pursued and developed several
e-commerce ventures that will be announced throughout 2000.

     DTN Fresh (an  expansion of DTN PROduce) DTN Fresh  provides  comprehensive
weather, pricing, news and transportation information, as well as e-commerce and
electronic data interchange (EDI) solutions for those involved in the buying and
selling of perishable commodities.

     DTN Fresh has two business units. DTN Tradelink provides e-commerce and EDI
solutions  for  buyers  and  sellers  of  perishable   commodities.   DTN  Fresh
Information  Services  provides an  authoritative  source of  weather,  pricing,
market  information,  news and  transportation  information  for produce,  meat,
floral and other perishable product industries.

1999 DTN Fresh Highlights

     DTN  Tradelink  staff  worked with  leaders in the industry and the Uniform
Code  Council to develop  and adopt EDI trading  standards  making it easier and
more  cost  effective  to add  trading  partners.  The  first  fully  integrated
procurement  system for the  perishable  system was  introduced in October 1999.
Contractual    arrangements    have   been   made   with   most   of   the   top
wholesalers/retailers to implement Tradelink in the coming year.

     DTN Fresh Information  Services  continues to expand its web-based business
with customers on virtually  every continent and continues to be recognized as a
leader in delivering  time-sensitive  information to the  perishable  industries
including produce, meat and floral.

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                                     -308-
<PAGE>

DTN Cotton Network
     DTN Cotton  Network is an electronic  communications  system for the cotton
industry  designed  to  operate on a user's  personal  computer  using  software
developed  specifically for cotton accounting and marketing.  DTN Cotton Network
sells gin and warehouse bale accounting/management  software and cotton merchant
software designed specifically for these specialized businesses. The combination
of the accounting and marketing  software and the  electronic  marketing  system
provides the cotton  industry with an  integrated  system for moving cotton from
farm to shipper.

     DTN Cotton Network serves the Western  Cotton Belt,  which includes  Texas,
Oklahoma, New Mexico, Arizona and California from its office in Lubbock,  Texas.
The network serves its Eastern Cotton Belt customers in Louisiana,  Mississippi,
Arkansas,  Tennessee,  Alabama, Georgia, Florida, South Carolina, North Carolina
and Virginia from its Memphis, Tennessee office.

     Sellers  connect to the Cotton  Network  via the  Internet  to upload  bale
ownership information,  down-load cotton bale data and list cotton for broadcast
to prospective  buyers.  Buyers may either receive the broadcast via Internet or
DTN Ku-band satellite,  where the broadcast is passed through a serial port into
personal computers at the buyer locations.

1999 DTN Cotton Network Highlights

     1999  marks the first  year that DTN  Cotton  Network  added  international
customers.  DTN Cotton Network sold warehouse software to four cotton warehouses
in the Ivory Coast of Africa. DTN Cotton Network currently has 75 gins using the
electronic marketing system, a 50% increase in customers over 1998, and 50 buyer
customers. The Cotton Network added 50 new customers, including gins, warehouses
and  merchants,  to its  management  software  packages  bringing the management
software  customer base to over 300. The total  customer count is over 400. This
represents  40% of  cotton  gins and  warehouses  having  access  to DTN  Cotton
Network.

DTNiron
     DTNiron is a cost-effective  communication resource for the farm implement,
construction,  truck and trailer dealers which provides an equipment locator and
advertising service for dealers at the wholesale and retail levels.

     A detailed implement listing remains on the DTNiron system for a minimum of
30 days,  renewable at the dealer's request.  Subscribers receive industry news,
financial information,  economic indicators and information from the DTN AgDaily
service.

     A  retail  equipment  listing  is  available  on  the  service's  web  site
(www.DTNiron.com). This allows subscribers to gain additional exposure for their
listings at no additional charge. Internet users can easily locate equipment for
sale by using a drill-down  database  search engine  directing them to DTNiron's
complete web listing.  Dealers can also receive e-mail from potential buyers or,
if they are not e-mail enabled, DTN will call or fax the message to the dealer.

1999 DTNiron Highlights

     DTNiron added an  Internet-based  service in 1999  (www.DTNiron.com)  which
contains  the basic  elements  of the  satellite  system  for less than half the
price.  All equipment listed for sale as well as equipment wanted are merged and
transmitted on both the satellite and Internet  platforms.  The wholesale system
is  available  to  DTNiron   subscribers   whereas  the  retail  information  on
DTNiron.com remains free of charge to the public.

EarthScan Network, Inc.
     EarthScan Network, Inc. (www.earthscan.com) is a newly formed joint-venture
company developed  through a partnership  between DTN and San Diego based Photon
Research  Associates,  Inc. (PRA). This partnership  combines PRA's expertise in
the  acquisition,  archiving,  enhancement  and  distribution of remotely sensed
images with DTN, the leader in  distribution  of information to agriculture  and
agribusinesses.

     EarthScan  delivers the most  sophisticated  satellite  images available to
farmers and their  suppliers at an  affordable  cost through the  Internet.  The
remote sensing  service enables the customer to identify and respond faster than
before to problems caused by insects, weather or nutrient deficiencies.  It also
provides  real-time  measurement  and  analytical  capabilities  throughout  the
growing season.

     In addition to agriculture,  EarthScan Network sees new markets  developing
in the future in real estate, community planning,  mining, fishing, forestry and
transportation industries.

(Photograph)
Roger R.  Wallace,  Senior Vice  President  and President of the Ag Division and
William R. Davison,  Vice President and President Ag Services  continue to guide
the ag division and create vision in an ever changing ag environment.

                                       17
                                     -309-
<PAGE>

Weather Services

Weather Services Revenues
in million of dollars


1995            1996            1997            1998            1999
- ----            ----            ----            ----            ----

1.0             5.6             10.7            25.8            38.5


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                                     -310-
<PAGE>

DTN Weather  Services  consists of three major  components,  DTN Weather  Center
Services, Kavouras, Inc. and Weather Services Corporation (WSC). The combination
of these three DTN  companies  creates a leading  provider  of critical  weather
information and meteorological equipment to small businesses,  military, federal
government,  broadcast television, major utilities,  Internet portals and anyone
whose business is impacted by weather conditions.

     DTN Weather  Services'  future  plans  includes  expanding  its presence in
markets  that rely on DTN  services  for weather  information  by  offering  new
transmission methods, including PC-based products and the Internet. The Internet
provides many  opportunities  for growth such as  advertising  supported  sites,
monthly subscription sites, "pay-per-view" sites, etc.

     DTN Weather  Services  employs a dedicated  weather  sales force made up of
nearly 100 sales  professionals for its sales and marketing efforts.  This sales
force is unique to DTN in the  weather  industry  and is a major  reason for the
success of the division.

     Weather  conditions impact the profitability and safety of many industries,
and DTN Weather  Services is dedicated to becoming the sole solution for weather
information needs.  Competition includes several large private weather companies
and on a smaller scale,  television and the Internet.  The competition lacks the
timeliness and current local weather information that DTN services provide.  DTN
Weather  Services  constantly  looks for new and  better  ways to  provide  this
critical information to its customers in the quickest,  most dependable and cost
effective way.

www.WX.com

     WX.com (www.WX.com), a free interactive weather web site, made its debut in
May of 1999.  WX.com features TV quality,  3-D graphics and weather  information
including  international  weather,  radar, storm tracking,  current  conditions,
weather warnings,  and more. WX.com  differentiates from other Internet services
in that it provides viewers with a dynamic and interactive  experience including
the ability to easily  overlay  full-motion  weather  maps with state and county
lines,  highways and other  familiar  landmarks to track weather  patterns.  The
technologically  advanced Triton(tm) RT, which was developed by Kavouras Weather
Services in  Minneapolis  as the  world's  first  fully  functional  2-D and 3-D
weather  graphics  system,  powers  WX.com.  This  system  provides  WX.com with
state-of-the-art   weather   that   is  both   entertaining   to   viewers   and
meteorologically accurate.

DTN Weather Center

     DTN Weather Center is a comprehensive  weather  information system designed
to meet the weather information needs of many industries.  Markets  specifically
targeted by DTN Weather  Center are golf  courses,  turf  management,  emergency
management,   state  transportation   departments,   public  works  departments,
construction, broadcast and aviation. DTN Weather Center introduced new products
in 1999 designed especially for the aviation and golf industries.

     DTN  Weather  Center  provides  more  than 100  full-color  maps and  other
in-depth  weather  information,  from local forecasts and regional radar maps to
national infrared satellite images. The service provides short-range  (immediate
to 48-hour) forecasts, long-range (30-90 day) outlooks and 10-day city forecasts
for more than 550 major cities across the United States. A personal programmable
segment  allows users to customize  maps and the archive  feature  easily stores
maps for future reference.

     DTN Weather Center provides the important weather  information and planning
tools to make businesses safer, more profitable and easier to manage.

DTN Aviation Center

     DTN Aviation Center is a comprehensive  aviation weather package  specially
designed for pilots, airports and Fixed Based Operators (FBO's),  supplying them
with  the  extensive  flight-plan  information  found on many  premier  "online"
systems.  This  package  includes  U.S.  and regional  depiction  maps,  24-hour
low-level  significant  weather  prognosis,  U.S. region winds and  temperatures
aloft and also METAR (the  aviation  acronym for airport  observations)  and TAF
(Terminal Aerodome Forecast) information.

     Subscribers  use DTN Aviation  Center during  flight  services to visualize
current weather  conditions while creating their flight plans. This service also
aids  in  determining  alternate  route  destinations.  A  new  premium  service
available to Aviation subscribers during 1999 was Flyte Trax, a worldwide flight
tracking system.

     Subscribers   choose   from  the  Level  I   service,   designed   for  the
local/regional  flyers up to 18,000 feet, or the Level II service,  designed for
pilots and airports  flying  nationally up to 45,000 feet.  The Level II service
also provides European flight information.

DTN  FlightBrief  Online
     In November  1999,  DTN  purchased  FlightBrief  Online  Service,  Inc. The
purchase  included  two  web  sites,   www.weatherconcepts.com   which  provides
real-time  weather  graphics  to  aviation,  marine,  farming  and  construction
subscribers,  and www.flightbrief.com  which provides real-time weather graphics
and interactive flight planning,  weather briefing,  airport databases and other
resources for aviation subscribers.

     In addition to the web sites, DTN received approximately 3,300 subscribers.
This  purchase  allows DTN to target the more than 600,000  aircraft  owners and
pilots  in the  United  States.  These  sites  also  offer the  opportunity  for
advertisers to reach these niche markets.

DTN Broadcast  Weather
     DTN Broadcast  Weather is a weather and news  information  service designed
for the broadcast  industry.  Along with the comprehensive  local,  regional and
national weather forecasts and information, subscribers receive National Oceanic
and Atmospheric Administration Warnings & Alerts (NOAA).

                                       19
                                     -311-
<PAGE>

     Learfield  World & National  News  Summary  provides  hourly  summaries  of
international  and national news. The segment  contains 20 pages,  formatted for
about two to three  minutes  of "rip and  read."  Announcers  can  organize  the
material, print it out or read it directly from the DTN screen.

DTNonline

     DTNonline  was added to the DTN Weather  Center  family of services  during
1999.   It   provides   the  same   maps,   forecasts   and   warnings   as  the
satellite-delivered  DTN services,  along with NOAA Warnings and Alerts, via the
Internet.  DTNonline allows subscribers to monitor important weather information
at the  office,  on the job site or at home.  Although  subscribers  prefer  the
reliability,  speed and reception of the satellite service, DTNonline allows the
redundancy  of having a satellite  system  along with an Internet  back up. This
allows  for  continuous  access in the event of rain fade at dish  locations  or
Internet delays due to phone line outages, etc.

DTN  Contractor  Weather
     DTN  Contractor  Weather is  designed  for the  construction  industry  and
includes   construction-related   news  and   information.   The  service  gives
subscribers a competitive  advantage by providing  valuable weather  information
necessary for important day-to-day business decisions.

     Job site weather  management  options  include the DTN Weather Alert Paging
System, which provides immediate  notification of severe weather directly to the
user's alpha pager, and DTNonline  (Weather  Center's  Internet  service).  NOAA
Weather  Wire and Severe  Weather Maps are  included in DTN  Contractor  Weather
Level II, along with the subscriber's  choice of the Weather Alert Paging System
or DTNonline.

     The service is a practical tool in improving employee safety,  saving labor
and material costs, and providing  effective  scheduling and staffing management
for the construction industry.

DTN Forestry Center
     DTN  Forestry   Center  provides   critical  forest  fire   information  to
subscribers.  Previously,  district  forest  service  offices  relied on a modem
network  assembled  in the late  1960's for crucial  information  on forest fire
locations and fire weather forecasts. With DTN Forestry Center, forecast service
district  managers  quickly  access fire  weather  text  bulletins  along with a
comprehensive set of weather maps.

     Bulletins provided for the forest service are Forest Weather Forecasts, Red
Flag Warnings,  Fire Danger Indexes,  Fire Weather Observations and Fire Weather
Notices. A special chapter of fire weather maps provides additional  information
such as Haines Fire Index,  Current and Forecast Relative Humidity,  Current and
Forecast Wind Speed and Direction, upper air analysis from 5,000 to 10,000 feet,
and moisture  index  information  from both the Crop  Moisture  Index and Palmer
Drought Index.

DTN Marine Center
     DTN Marine Center provides  satellite-delivered weather information for all
areas of the marine  industry.  The service provides  information  necessary for
cost-effective,  efficient decision making regarding towing,  shipping,  salvage
and recreation.  It includes Lake and Marine Text Bulletins,  Buoy Reports, Lake
and Marine Maps and Tide Tables, as well as general weather  information and sea
conditions. Sea Surface Temperatures are also available as an optional service.

DTN Transportation Weather

     DTN  Transportation  Weather is designed  for anyone  responsible  for road
maintenance and conditions.  Comprehensive local,  regional and national weather
forecasts  and  information  are  available  to  transportation   professionals,
allowing them to make informed decisions regarding the weather.

     Subscribers  have the  choice of the DTN  Weather  Alert  Paging  System or
DTNonline  (DTN Weather  Center's  Internet  service).  The Weather Alert Paging
system provides immediate  notification of severe weather directly to the user's
alpha pager. DTNonline enables the subscriber to make management decisions based
on weather at home or away from the office with a PC.

     NOAA  Weather  Wire and  Severe  Weather  Maps,  Travel  Cast Maps and Road
Conditions,  and EarthSAT Winter Weather  Information are important  features of
this product.

DTN Travel Center

     DTN Travel Center is an  interactive  hotel guest service  designed for the
hospitality  and travel  industries.  The service targets hotels and motels with
50+ rooms and includes NEXRAD  Real-Time Radar Maps,  travel  forecasts and road
conditions,  detailed  city and  national  forecasts,  national  and world news,
sports and sports  scores.  In  addition,  the  service  provides  business  and
financial news and market quotes and indexes.

                                       20
                                     -312-
<PAGE>

     DTN Travel Center  provides a  comprehensive  weather and news  information
package for both the business and vacation traveler.

DTN Turf Manager
     DTN Turf Manager is available to  businesses  and  individuals  involved in
turf-related operations such as golf courses, lawn maintenance,  landscaping and
sod farms. The service provides the weather and chemical  information needed for
effective  turf  management,  making  the  safest,  most  cost-effective  use of
chemicals,  labor and other  resources.  Material  Safety Data Sheets (MSDS) are
available  with Turf Manager,  along with the C&P Press Turf Product  Index,  an
information database of more than 275 turf pesticides. Plant Protection Chemical
Product  Labels  were  added to the  service  in 1998.  This  important  segment
provides full information on chemicals used in turf care and management.

     Thor  Guard,  the only  lightning  prediction  system  available,  warns of
lightning  strikes  before they happen and is available as an optional  service.
Evapotranspiration Tables provide regional  evapotranspiration rates to plan for
watering and chemical application.

     Golf  information,  such as ESPN Sports  Ticker,  the National  Golf Course
Directory, GCSAA News and USGA News, is provided with DTN Turf Manager.

DTN Pro Shop

     DTN Pro Shop was added to the line of Weather  Center  products in 1999. It
contains the weather information golf course  professionals need, along with the
golf and sports information their customers enjoy.  Regional radar maps, current
weather conditions and city forecasts are included in the weather segment.  Golf
and  sports  information  includes  an  interactive   handicap  calculator,   an
easy-to-use  search  and sort  database  of golf  courses  in the  U.S.,  a golf
products  section and a golf news and sports  segment  that  provides the latest
updates on the major tours and up-to-the-minute coverage of all major sports.

DTN Weather Safety Center

     DTN  Weather  Safety  Center   provides   weather   information  for  those
responsible  for  protecting  lives  and  property  from the  hazards  of severe
weather.  NOAA Weather  Wire,  the most  comprehensive  warning and alert system
available  today, is available with the service,  along with radar and satellite
images, local, regional and national outlooks.

     DTN  Weather   Safety  Center  is  invaluable   for  emergency   management
professionals. Safety Center subscribers receive a free DTNonline connection for
remote or  emergency  access to weather  information  in  addition  to their DTN
satellite  system.  This enhanced  option assures  continuous  access to weather
information regardless of conditions that could cause reception problems.

StormSentry PC

     A new  product  to DTN  Weather  Center  in 1999 is DTN  StormSentry  PC, a
weather  information  service designed to provide real-time,  single-site NEXRAD
access on a PC. DTN  StormSentry is the ultimate in storm  tracking  technology.
Subscribers  can access the storm tracking  system at an affordable  cost, in an
easy-to-use format. The ease of navigation and the multiple "windows" capability
allows subscribers to simultaneously monitor critical weather conditions, severe
weather,  satellite maps and lightning  conditions.  Users can zoom to the exact
location, as small as a one county area, for in-depth viewing of storm cells.

     StormSentry  takes the  guesswork  out of severe  weather  forecasting  and
allows subscribers to be proactive in responding to severe weather.

1999 DTN Weather Services Highlights

     DTN Weather Center  increased its subscriber base in 1999 to  approximately
20,000  subscribers.   Government  agencies  (emergency   management  and  state
transportation   departments),   aviation,   golf  and  turf   management,   and
construction-related  businesses  continue to be the leading  industries for DTN
Weather Center.

     WX.com,  DTN Pro Shop,  DTNonline and DTN StormSentry PC were introduced in
1999. WX.com, a free, advertising-based service, introduced DTN's expert weather
information to the Internet.  DTN  StormSentry  PC has encouraged  growth in new
markets such as utilities, railroads and manufacturing companies.

     DTN Weather Center is continuing to make its presence known as the industry
leader in  providing  timely,  accurate  weather  information  to a  variety  of
industries and continues to gain a strong  foothold in the emergency  management
and Department of Transportation (DOT) segments.

DTN Kavouras Weather Services

     DTN  Kavouras  Weather  Services  is a total  weather  solutions  resource,
providing a full spectrum of advanced  meteorological  information  products and
services  for  weather-dependent  applications  in  industries  and  governments

                                       21
                                     -313-
<PAGE>

worldwide. The Minneapolis-based subsidiary of DTN produces real-time PC weather
workstations, comprehensive meteorological training, and a massive international
weather  database.  DTN Kavouras and its 140 employees  offer an expertise level
unmatched in the industry.

     Weather Services Corporation (WSC), based in Lexington,  Massachusetts,  is
one  of  the  largest  sources  for  meteorological   consulting  and  worldwide
commercial  weather  information.  WSC provides  name  awareness for DTN Weather
Services through valuable contracts with high profile customers  including Metro
Networks, TVA (Tennessee Valley Authority) and numerous utilities, broadcasters,
agribusinesses and municipalities.

Triton RT

     Triton RT is a real-time  3-D and 2-D weather and news  graphics  animation
system  focused on, but not limited to, the broadcast  television  market.  This
product uses weather data to create an informative and exciting weather show.

MetWork FileServer

     MetWork  FileServer is a robust and dynamic network  solution for real-time
dissemination of meteorological information based on the versatile and efficient
NT format,  supporting  standard  Internet  communications  protocol and various
network  configurations.

Storm Pro

     Storm Pro is a workstation that integrates  real-time Doppler weather radar
with a  geographic  information  data system to create an accurate  display with
broadcast-quality appearance. The display can be individualized for a unique and
defining look important in the television market.

StormWatch

     StormWatch is customizable  software that monitors either a weather wire or
a DTN Kavouras  MetWork  Fileserver to generate  color-coded maps and/or a crawl
message for important watch, warning or advisory weather situations.  StormWatch
also allows a television  station to edit and prioritize  information  for their
viewing areas.

SchoolWatch

     SchoolWatch  is  customizable   software  for  the  Triton  RT  that  helps
television stations easily update,  prioritize and display late-start and school
closing information.  This software can also be configured to update information
on a station's web site.

     Data  and  Customizable  Forecasting  Services  provides  a broad  range of
standard data for a variety of markets. In addition, DTN Kavouras staff provides
24-hour,  365 days a year coverage for tailor-made  forecasts to meet customers'
special needs.

Kavouras MetVision

     New  in  1999,  the  Kavouras  MetVision  service  represents  the  highest
resolution  weather  forecast  data  in  the  broadcast   television   industry.
MetVision,  based on a proprietary  numerical weather prediction model developed
by the  Harris  Corporation,  produces  forecasts  of the  future  state  of the
atmosphere in four dimensions. The Kavouras Triton RT workstation transforms the
MetVision data into visualizations of the forecast  information for analysis and
spectacular  on-air displays.  MetVision helps a meteorologist  prepare a better
weather  forecast  and also helps to  graphically  explain  the  forecast to the
average TV viewer. MetVision is an optional Kavouras data product.

Kavouras/RT-SET WxStudio

     Also new in 1999 is  Kavouras/RT-SET  WxStudio  which combines the Kavouras
TritonRT weather  workstation with RT-SET's  cost-effective,  entry level IbisTM
Virtual  Studio  System.  WxStudio  represents  the  integration  of  these  two
complementing  technologies  and offers the broadcast  television the ability to
make one purchase to deliver virtual studio effects with news,  weather,  sports
and  entertainment  programming from the same integrated  system. In addition to
free-form 3D weather  graphics,  the WxStudio  Virtual Studio System supports an
unlimited number of cameras,  foreground and background images and obstructions,
and instant switching between backgrounds.

1999 DTN Kavouras Weather Services Highlights

     In July 1998,  DTN acquired  Kavouras,  Inc.,  and in late 1998,  reached a
definitive  agreement with Weather  Services  Corporation  creating DTN Kavouras
Weather  Services.  In 1999,  DTN  Kavouras  Weather  Services  entered into new
partnerships  creating  two new  services,  MetVision  and  WxStudio.  These new
services,  in  addition to the  current  products  and  services,  offer  unique
specialties to form  content-rich  weather  services,  products and solutions to
serve a diverse client base,  from small-town  farmers to big-city  broadcasters
and governments across the globe.

                                       22
                                     -314-
<PAGE>



DTN's  Broadcast   Center   provides  the   "heartbeat"  to  deliver   critical,
time-sensitive data 24 hours a day, 7 days a week.

                                       23
                                     -315-
<PAGE>


Financial Services

Financial Services Revenues
in million of dollars


1995            1996            1997            1998            1999
- ----            ----            ----            ----            ----

6.1             8.6             10.3            13.4            19.4

                                       24
                                     -316-
<PAGE>


DTN  Financial  Services'  core  business  continues  to  focus on  serving  the
exploding number of individual  investors as well as members of the professional
financial industry.  This is accomplished by offering an array of time-sensitive
yet  affordable  information  services,  plus a suite of  business  applications
designed for the  financial  professional.  This strategy is critical due to the
highly competitive nature of the industry.

     DTN  Financial  Services  brings  together a broad  selection  of financial
information and has capitalized on the explosive  growth in online  investing by
offering well-conceived and attractively priced Internet services. DTN Financial
Services  continues to integrate  information  from a variety of sources such as
Bridge,  Liberty  Brokerage  and Market News  Service,  UPI, New York Times,  PR
Newswire,  Business Wire,  Futures World News, Dow Jones,  Associated  Press and
others. In the past year, the services began to transition from information only
to services with information and transactional capabilities.

     A la carte,  optional services offer subscribers an even greater variety of
financial data, including stock selection and timing advice, earnings estimates,
fundamental  stock  market  data,  U.S.  Treasury  quotes  and  other  financial
market-related  services.  These  combinations  allow each service to maintain a
competitive advantage in the market.

     Subscribers include individual  investors,  independent brokers,  financial
advisors and financial  institutions.  With competition coming from sources such
as commodity  news  services,  diversified  media  companies  and smaller  niche
providers,  DTN  Financial  Services  continues to  differentiate  itself in the
industry by offering new services at competitive prices.

Individual  Investors
     With the growing number of online  investors  estimated to reach 15 million
by the end of 2000, DTN Financial Services has strategically  positioned its two
leading,  streaming  Internet-delivered  services,  DTN.IQ  and  InterQuote,  to
continue to capture market share among this group.  Aiding this endeavor was the
incorporation of direct access to online trading into both of these services.

DTN.IQ

     Since  its  inception  in May 1998,  DTN.IQ  (www.DTNIQ.com)  has  steadily
outperformed company expectations, and operating results for fiscal 1999 confirm
this trend. A  contributing  factor to the increase in sales during 1999 was the
June integration of direct online trading capabilities.  Through our established
relationships  with several  online  brokerage  firms,  DTN.IQ  subscribers  can
execute  trading  decisions  directly  from  their  quote  screens  in  seconds.
Utilizing  non-browser-based  software,  traders  can place  orders and  receive
return confirmations of their transactions in real-time.

     A vital consequence of trading  integration is the ability of DTN Financial
Services to generate revenue from customers'  trading activity.  Transactions by
both DTN.IQ and InterQuote  customers  became a source of new revenue during the
fourth quarter of 1999.

     In addition, the streaming real-time quotes, news and charting capabilities
provided by DTN.IQ offers  functionality  critical to  individual  investors and
traders using the Internet.

InterQuote

     In May 1999, DTN Financial  Services  completed the  acquisition of Paragon
Software, Inc. in Milwaukee,  Wisconsin.  Paragon's flagship product, InterQuote
(www.interquote.com),  delivers  real-time or delayed  market data to individual
investors  via the Internet and was one of the first such services ever offered.
With  the  acquisition  of  Paragon,   DTN  Financial  Services  obtained  3,800
subscribers  and the  ability  to round out its  offerings  for both  casual and
extremely active investors.

     InterQuote's unique front-end application appeals to investors needing cost
effective,  a la carte features. An affordable yet robust basic service includes
streaming quotes on stocks, futures and options, intraday and historical charts,
pager quotes and alerts, and an extensive array of fundamental data. Subscribers
may further enhance the service by adding premium  services such as Nasdaq Level
II pricing,  Dow Jones Business News, AP Online News and custom market  scanning
tools. Additional premium services are planned for inclusion in 2000.

Other Financial Services

     Other  financial  information  services  available  to the  individual  and
professional investor are DTN Real-Time,  DTN SPECTRUM and DTN Wall Street. Each
of these services may be delivered by customer  preference via satellite,  cable
television's VBI (vertical blanking interval) or designated phone line.

                                       25
                                     -317-
<PAGE>


(Photograph)
DTN  Financial  Services  employees  analyze  and edit  data  daily  to  provide
up-to-the-minute news and financial information.


                                       26
                                     -318-
<PAGE>

     These services provide  real-time or delayed stock and stock option quotes,
news and commentary as well as other  time-sensitive  financial market data. All
of the  services  include  information  integrated  from a  variety  of  sources
including  DTN's  commodity  ticker plant,  Bridge,  Standard & Poor's,  Liberty
Brokerage and over 40 newswires  including Dow Jones and AP.  Optional  services
from some of the world's leading investment service providers are also available
and may be delivered on most platforms.

Financial   Professionals

     For financial professionals, the focus in 1999 turned to Internet-delivered
services.  In September 1999, National Datamax,  Inc., a wholly owned subsidiary
of DTN, introduced an extranet service for Broker/Dealers.

Rep Center

     The  web-based  service,  RepCenter  (www.repcenter.com),  is customized to
resemble the Broker/Dealer's  public web site and gives  representatives  secure
access to commission  reports,  sales  letters,  business  forms and home office
announcements from anywhere.  The service also provides a portal page of quotes,
news and charts.  RepCenter increases National Datamax's presence with financial
professionals  and makes it easy for them to launch National  Datamax's  contact
management, fund analysis or portfolio management software from RepCenter's main
page or purchase products online.

     National  Datamax  also  introduced  upgrades  to all  of  its  fundamental
products and expanded the data delivery capabilities for the Mutual Fund, Stock,
Industry and Variable Annuity analysis programs.

     With the addition of RepCenter, National Datamax has expanded its offerings
for  financial   professionals  by  providing  a  complete   business   solution
encompassing  prospecting,  client management,  asset management,  reporting and
business management.

Enterprises

     Financial  Window  Network  (FinWin),  a new service  introduced in October
1999,  dramatically  broadened the market for DTN Financial  Services to include
any enterprise desiring to enrich their web site with popular financial content.

Financial Window Network or FinWin

     Leveraging  existing content and technology,  in October 1999 DTN Financial
Services launched FinWin  (www.finwin.com),  a financial portal site that may be
customized for public or private web sites.  FinWin builds traffic  instantly to
site by the addition of market quotes,  news,  interactive  charts, list of most
actives, major indices and custom watchlists and portfolios. FinWin may be added
to a site for free (DTN retains  advertising  space) or by monthly  subscription
without advertising.

     With FinWin, DTN Financial Services gains from two solid operating factors,
the opportunity to extend product sales beyond the traditional  financial market
and the  creation  of a viable  advertising-based  revenue  stream.  A survey of
current customers attests to this first phenomenon. FinWin customers come from a
wide  range of  industries  including  Internet  service  providers,  local  and
regional news  organizations,  search engines,  web development and metropolitan
community sites, in addition to conventional financial services businesses.

     The  establishment  of an  advertising-based  service enables DTN Financial
Services to fully compete in this  prevailing  Internet  business  model,  while
FinWin  customers   receive  the  full  advantage  of  edited  content  from  an
established financial expert.

     Despite a year end release,  FinWin  established  a strong sales record for
the final quarter of 1999 and is beginning to contribute to operating cash flow.

1999 Highlights

     With the  close of  1999,  DTN  Financial  Services  finds  that 49% of its
subscribers elect Internet-delivered services. This is up from 12% as of January
1, 1999.  Major  initiatives  during the year allowed DTN Financial  Services to
create  additional  revenue  streams  from  transactions  and  advertising-based
business models to supplement its core subscription-based revenue. This strategy
will continue to receive significant investment in the coming year.

     In  addition,  paramount  to the success of current  and future  individual
investor  sales was the  completion of a fully  redundant  operations  plant for
delivering the DTN.IQ service.  By year's end, all DTN.IQ subscribers  benefited
from fully redundant Internet  connections,  servers and datafeeds to ensure the
highest standard of reliability in the industry.

     Overall,  revenue for the  Financial  Services  division  grew 45% in 1999,
continuing a stellar pattern of 34% compounded  revenue growth for the past five
years.



                                       27
                                     -319-
<PAGE>

Energy Services

Energy Services Revenues
in million of dollars


1995            1996            1997            1998            1999
- ----            ----            ----            ----            ----

10.0            12.2            14.3            16.1            18.7

                                       28
                                     -320-
<PAGE>

     Energy related services include DTNergy for the refined fuels,  natural gas
industries and electric  industries.  DTNergy provides  pricing  information and
communication services for the refined fuels industry.  This service consists of
several pages of delayed  energy  futures and options  quotes plus selected news
and financial information.

     DTNergy is designed to connect  refiners  (producers  of refined  fuels) to
wholesalers  (distributors  of refined  fuels).  The refiner  sends refined fuel
prices to  wholesalers  authorized to receive this  information.  The refiner is
also   capable  of  sending   terminal   alerts,   electronic   funds   transfer
notifications, invoices, and other communications to the wholesaler. The DTNergy
system  carries  more  than two  million  messages  a month  for this  industry.
Subscribers  can also  select  from a variety  of  optional  services  providing
additional prices or news related to the petroleum industry.

     The strength of the DTNergy Refined Fuel service is the ability to deliver,
within seconds,  accurate refiner terminal prices and other vital communications
to the  wholesalers.  This service is more  reliable,  timely and less expensive
than the competition, which utilize telephone delivered printer-only systems and
FAX services.

     DTNergy generates revenue from two primary sources,  the wholesaler and the
refiner. Wholesalers currently pay a monthly subscription fee while refiners pay
fees based on the number and length of communications sent to wholesalers.

     Refiners use DTNergy  communications  to link to their wholesalers with the
implementation  in 1997 of EDI  (Electronic  Data  Interchange)  fuel  invoices.
EDI/VAN  (Value  Added  Network)  services  help  automate  customers'  business
processes by converting  refiner text invoices into an industry standard format.
Once these  invoices are in a standard  format,  the invoice data is transferred
into a customer's accounting system from the ACE unit.

     DTNergy  also  provides  an  information  service  for the  natural gas and
electric industries. Subscribers receive instant or delayed NYMEX energy futures
and options quotes, a comprehensive  weather package and industry  specific news
and market  information.  This service targets energy  producers and generators,
transporters, marketers, utilities and larger energy consumers.

     DTNergy enjoys a strong  position within the energy  marketplace.  Although
there are technologies  available to petroleum  suppliers that would allow these
suppliers  to  communicate  directly  with  their  petroleum  wholesalers,   the
suppliers  have  been  unsuccessful  in  implementing  technologies  such as the
Internet  to  displace  DTNergy.   The  main  reason  for  DTNergy's   continued
proliferation  within the petroleum industry is that most petroleum  wholesalers
purchase petroleum products from more than one supplier data, create standardize
data formats for  electronic  processing of supplier  data and provide  one-stop
customer service for petroleum  wholesalers has added value that no one supplier
can offer on there own.

1999 DTNergy Highlights

     Two   Internet-based   services   were   introduced   in   1998.   ProphetX
(www.fimi.com)  provides the ability to access  DTNergy's  real-time market data
using Financial Information  Management Inc.'s (FIMI)  client-service  software,
ProphetX.

     In November 1998, a joint venture between DTN and GlobalView Software, Inc.
prompted  the   formation  of   GlobalData,   which  is  aimed  at  serving  the
international  energy  markets.  This  partnership  allows  DTNergy  to  provide
real-time data for the  international  markets with  GlobalView  Software,  Inc.
providing   the   graphical   user   interface   for  the  service.   EnergyView
(www.energyview.com)  is the Internet  product  creation of  GlobalData.  In the
fourth  quarter of 1999,  GlobalView  expanded the service to include  real-time
data and analytical trading software to the international marketplace.

     These two Internet  initiatives,  ProphetX and  EnergyView,  showed  steady
growth and increased market awareness in 1999.

     In  addition,  DTNergy  developed a new  service,  Petroleum  Posted  Price
Reports,  which will be available to petroleum  refiners and  wholesalers in the
first  quarter  of  2000.   This  service  will  provide   access  to  petroleum
rack-pricing  data for  benchmarking  fuel contracts and  competitive  analysis.
Currently,   there  is  only  one  dominant  player  in  the  market   providing
rack-pricing  data to both  refiners  and  wholesalers,  Oil  Price  Information
Service (OPIS).

                                       29
                                     -321-
<PAGE>
Other Services

Other Services Revenues
in million of dollars


1995            1996            1997            1998            1999
- ----            ----            ----            ----            ----

1.0             2.3             3.5             4.6             4.8

DTNauto

     DTNauto is an  information  and  communication  service  for  professionals
involved in the automotive, finance and insurance industries. The service offers
precision,  time  sensitive  information  for analyzing new and used  automotive
vehicle values.

     In 1999,  DTNauto began  development of its web site  (www.DTNauto.com)  to
provide automotive and related industries with time sensitive  wholesale pricing
and market analysis,  portability and enhanced  functionality  via the Internet.
Subscriptions  to  DTNauto.com  will be  available in the first half of 2000 and
will be competitively priced.

DTN Joint Venture Services

     DTN joined forces with several companies to market their services using DTN
technology.  These services are DAT Transportation Terminal,  TracElectric,  DTN
InfoLink and DTN Missing Children Information Center (MCIC).

DTN InfoLink DTN

     InfoLink provides real-time news, weather, sports and market information to
the grocery and transportation industries.  With the addition of the latest card
reader  terminals  and  printing  technologies,  unique  promotions  and product
offerings can be delivered to public use kiosks.  These kiosks allow interactive
coupon  redemption,  printing  of  recipes,  and the  opportunity  to  integrate
customer loyalty and frequent user programs.

DAT

     The  DAT  (Dial-A-Truck)   Transportation  Terminal  service,   located  in
Beaverton, OR, is an information communication system for the trucking industry.
The service provides load and truck matching  performed on a database of 100,000
listings updated daily.

     DAT allows  subscribers  to input their  listings into the DTN receiver and
send this  information  to a database  using the  internal  modem.  The  service
provides  subscribers with the ability to perform  extensive  searches to locate
loads and trucks and to set alarms alerting users of a match.

     The service also provides regional radar weather maps of major highways and
interstate systems,  transportation news, diesel fuel prices and other financial
information related to the trucking industry.

     DAT targets all freight brokers and carriers  throughout the United States,
Canada and Mexico.

TracElectric

     TracElectric is an equipment  locator service for the electrical  equipment
industry. This service provides over 100 pages of new,  remanufactured,  surplus
and used electrical equipment listings.  The service connects buyers and sellers
throughout the United States and Canada.

Missing Children Information Program

     DTN  Missing   Children   Information   Center  (MCIC)   provides   instant
transmission of data regarding children in danger to local,  regional,  national
and Canadian  outlets.  In an effort to assist parents,  police and the National
Center for Missing and Exploited  Children  (NCMEC) in locating missing children
and the criminals involved,  photos and information regarding these children are
posted as a public service on all DTN color systems.

     As a result of the close working  relationship with NCMEC, a national kiosk
program has been developed.  Sponsors for the kiosk program are being identified
and kiosks are being placed in shopping  malls,  airports,  schools,  hospitals,
government buildings and other high-pedestrian traffic areas.

                                       30
                                     -322-
<PAGE>

Employees in DTN's  Broadcast  Center control room constantly  monitor  critical
applications to ensure continual service to 167,000 subscribers.


                                       31
                                     -323-
<PAGE>

Selected Historical Consolidated Financial Data

1999 Revenues
DTN Ag Services                 51%
DTN Weather Services            23%
DTN Financial Services          12%
DTN Energy Services             11%
Other Services                  3%

1998 Revenues
DTN Ag Services                 59%
DTN Weather Services            17%
DTN Financial Services          9%
DTN Energy Services             11%
Other Services                  4%

1997 Revenues
DTN Ag Services                 69%
DTN Weather Services            8%
DTN Financial Services          8%
DTN Energy Services             5%
Other Services                  3%

1999 Subscribers at Year End
DTN Ag Services                 65%
DTN Weather Services            14%
DTN Financial Services          13%
DTN Energy Services             5%
Other Services                  3%

1998 Subscribers at Year End
DTN Ag Services                 71%
DTN Weather Services            11%
DTN Financial Services          10%
DTN Energy Services             5%
Other Services                  3%

1997 Subscribers at Year End
DTN Ag Services                 76%
DTN Weather Services            8%
DTN Financial Services          8%
DTN Energy Services             5%
Other Services                  3%

<TABLE>
<CAPTION>

In thousands, except per share data             1999            1998            1997            1996            1995
- ------------------------------------------------------------------------------------------------------------------------
Operating Data (For the Year):
<S>                                          <C>             <C>              <C>             <C>             <C>
 Total Revenues                              $  166,509      $  148,986       $  126,374      $   98,384      $  62,288
 Operating income                            $    4,156 1    $    4,163 3     $   12,383      $    6,921      $   4,343
 Net income (loss)                           $   (3,707)2    $   (3,743)4     $    2,236      $     (958)     $    (283)
 Basic income (loss) per share               $     (.32)     $     (.33)      $      .20      $     (.09)     $    (.03)
 Diluted income (loss) per share             $     (.32)     $     (.33)      $      .19      $     (.09)     $    (.03)
 Basic shares outstanding                        11,734          11,359           11,101          10,658          9,909
 Diluted shares outstanding                      11,734          11,359           12,083          10,658          9,909
 Dividends paid5                                   --              --               --              --             --
 Dividends paid per share5                         --              --               --              --
Balance Sheet Data (At Period End):
 Working capital (deficit)                   $  (19,642)     $  (17,447)      $  (21,520)     $  (14,748)     $ (10,472)
 Total assets                                $  184,003      $  197,185       $  162,431      $  177,730      $  92,672
 Long-term debt and subordinated notes       $   79,038      $  100,620       $   72,891      $   97,748      $  47,021
 Shareholders' equity                        $   37,497      $   32,150       $   32,196      $   28,290      $  12,877

</TABLE>
[FN]

1    Includes $.7 million non-recurring severance costs related primarily to the
     resignation of the Company's  Chairman and CEO and $4.1 million  related to
     the loss on sale of radar operations.

2    Includes $.7 million  related to severance  costs ($.5 million net of tax),
     $4.1 million related to loss on sale of radar business ($2.6 million net of
     tax) and $.2 million related to equity in loss of affiliate (.1 million net
     of tax).

3    Includes $5.8 million non-recurring  satellite costs related to the loss of
     control of Galaxy IV satellite by PanAmSat, the Company's primary satellite
     provider.

4    Includes $5.8 million related to satellite costs ($3.7 million net of tax),
     $1.7 million  extraordinary item related to debt extinguishment  charge for
     the  early   retirement   of  the  Company's   $15,000,000   11.25%  Senior
     Subordinated Notes due 2004 ($1.1 million net of tax).

5    DTN has not paid any dividends in the last five years and currently intends
     to retain earnings for use in its business.

</FN>
                                       32
                                     -324-
<PAGE>
Management's Discussion and Analysis

     The  following  discussion  of  the  financial  condition  and  results  of
operations  of the  Company  should  be read in  conjunction  with the  Selected
Financial Data and the  Consolidated  Financial  Statements and Notes thereto in
this annual report.

     From time to time, information provided by the Company,  statements made by
its employees or  information  included in its filings with the  Securities  and
Exchange Commission  (including this Annual Report to Shareholders and documents
incorporated  by  reference)  may contain  statements  which are not  historical
facts, so-called "forward-looking statements".  These forward-looking statements
are made  pursuant  to the safe  harbor  provisions  of the  Private  Securities
Litigation  Reform Act of 1995.  The Company's  actual future results may differ
significantly   from   those   stated   in   any   forward-looking   statements.
Forward-looking   statements   involve  a  number  of  risk  and  uncertainties,
including,  but not limited to,  product  demand,  pricing,  market  acceptance,
inflation,  risks in product and technology  development,  product  competition,
acquisitions,  key  personnel,  and other risk  factors  detailed in this Annual
Report to  Shareholders  and in the  Company's  other  Securities  and  Exchange
Commission filings.

Financial Condition
General Overview
     The equipment  used by  subscribers  is a large capital  investment for the
Company. The cost of subscriber  equipment,  net of depreciation,  accounted for
39% and 46% of the  Company's  total  assets  at  December  31,  1999 and  1998,
respectively.  The Company financed the majority of the investment in subscriber
equipment  with  long-term  debt. In 1999,  1998 and 1997,  the cash provided by
operating  activities exceeded the cost of new subscriber equipment and was used
for acquisitions and to service long-term debt.

     The Company made  significant  investments  during  1999,  1998 and 1997 to
acquire  subscribers and businesses that fit the Company's  business model.  The
net intangible assets (primarily  goodwill) from acquisitions was 34% and 33% of
the  Company's  total  assets at December 31, 1999 and 1998,  respectively.  The
acquisitions of subscribers and businesses are expected to enhance the long-term
operating  performance and financial condition of the Company. The investment in
acquisitions  required  the Company to increase  long-term  debt during 1998 and
1997.

     The Company's  overall  financing  strategy has been simple,  use long-term
debt financing  versus  equity,  whenever  possible,  to prevent the dilution of
shareholder  value. The Company's  management  plans to continually  review this
strategy to support the continued growth of the Company.

Cash Flows From Operating Activities

     Net cash  provided  by  operating  activities  for 1999 was  $51.2  million
compared to $42.4  million for 1998.  The increase of $8.8 million was primarily
due to the $4.9 million increase in operating cash flow (operating income before
depreciation  and  amortization  expense),   generally  referred  to  as  EBITDA
(earnings before interest, taxes, depreciations and amortization expenses) and a
$5.8 million  decrease in net operating  assets offset by increases in cash paid
for interest and income taxes.

     The Company had $19.6 million and $17.4 million of negative working capital
at December 31, 1999 and 1998, respectively.  The decrease in working capital is
primarily  due to the  following  1) the $2.1  million  decrease  in  inventory,
primarily  related to the sale of the radar  operations  of the  Kavouras,  Inc.
subsidiary (see footnote 2 - Sale of Radar Operations),  2) the increase of $1.0
million in accounts  payable and 3) the $2.5 million increase in current portion
of long-term  debt related to the  EarthScan  Network,  Inc.  (see  footnote 7 -
Investment  In  Affiliate).  These  decreases  were  offset by the  increase  in
Investment in  Securities  of $3.7 million  related to the warrants in SmartServ
Online, Inc. (see footnote 5 - Investments In Securities)

CASH FLOWS FROM INVESTING ACTIVITIES

     Net cash used in investing  activities for 1999 was $35.2 million  compared
to $66.8 million for 1998. The decrease of $31.6 million is due to the following
1) the $27.2 million decrease in acquisitions,  2) the $5.9 million decrease for
purchases of property and  equipment,  3) the net effect of $1.0 million for the
sale of radar operations and 4) the cash Investment in Affiliate of $.5 million.

Subscriber Equipment

     Historically,   the  majority  of  the  investment  in  equipment  used  by
subscribers  has been a direct result of the growth in the Company's  subscriber
base.  The  Company's  marketing  efforts  to obtain  new  subscribers  requires
investing in subscriber equipment for trial and complimentary subscriptions.

                                       33
                                     -325-
<PAGE>

     In 1999,  purchases of subscriber  equipment were primarily to maintain the
current base of satellite  subscribers and upgrade  existing  equipment,  mainly
hard drives.  These upgrades are primarily  related to subscribers  upgrading to
more advanced  higher  priced  services.  Included  were one-time  non-recurring
capital  expenditures of $5.0 million for satellite  equipment to enhance signal
reception to subscribers.

     During  1999,  approximately  6,000  monochrome  system (FM and Ku) and DTN
FarmDayta  subscribers  upgraded service to the color Ku-band system with 97% of
these conversions  involving DTN AgDaily subscribers.  The remaining 3% involved
DTN Financial Services and DTNergy subscribers.  The conversion of approximately
1,800  subscribers  from DTN AgDaily on the color  Ku-band  system to other more
advanced Ku-band services such as DTN Pro Series, DTNstant, DTNiron, DTN PROduce
and DTN Weather Center also resulted in upgraded equipment.

     DTN  decreased the  inventory of color  receivers  and  components to build
color receivers during 1999. At December 31, 1999 the Company had  approximately
$12 million of this  inventory  compared to $19 million in 1998. The build up of
inventory in 1998 occurred due to advance commitments on equipment purchases and
the unexpected  increase in cancellations  due to the Galaxy IV satellite outage
discussed below. The Company adjusted purchasing and production schedules in the
second half of 1998 to reduce the  inventory  related to sales and  cancellation
activity.

Other Property and Equipment

     The majority of the  investment in other property and equipment is computer
equipment,   software,   communications   equipment,   furniture  and  leasehold
improvements. The increase in other property and equipment of $.6 million is due
to the following,  1) the increase of $1.0 million in computer equipment,  2) an
increase  of $.9  million in  software  costs,  3) a decrease  of $.8 million in
leasehold improvements and, 4) a decrease of $.5 million in furniture,  fixtures
and other purchases.

     The  increase in  computer  equipment  is due to the growth of  operations,
including having the Kavouras  operations for 12 months, and providing redundant
facilities  for service  delivery.  The increase in software costs is due to new
projects related to new product initiatives.  These costs are primarily one-time
in  nature  and  were  $3.6   million  and  $3.1  million  for  1999  and  1998,
respectively.  The  reduction in  furniture,  fixtures and other  purchases  and
leasehold   improvements  is  due  to  expansion  at  the  Company's   corporate
headquarters in 1998.


Acquisitions

     The Company paid $10.5 million cash in 1999 for  acquisitions and a license
agreement  compared to $37.6 million cash during 1998. The  acquisitions in 1999
were primarily financed using internally generated cash from operations.

     The  Company's  growth  strategy  includes  developing  services  for niche
markets  plus  acquisitions  that  fit the  business  model  and/or  competitive
strategies.  The Company closed on several acquisitions during 1999. The Company
closed on two  acquisitions  during the first  quarter,  amended  the  SmartServ
Online  (SSOL)  licensing  agreement  in the  second  quarter  and closed on one
acquisition during the fourth quarter. Included in the first quarter of 1999 was
the  acquisition of Paragon  Software,  Inc., an Internet  company that supplies
real-time    streaming    quotes    under   the    product    name    InterQuote
(www.interquote.com).  In May 1999,  the Company  completed  an amendment to its
existing  license  agreement  with  SSOL  and  its  services,  primarily  DTN.IQ
(www.DTNIQ.com), to create a long-term business relationship with SSOL including
an  exclusive,  perpetual,  worldwide  license.  The  Notes to the  Consolidated
Financial  Statements  have more detail on all  acquisitions  and the  completed
license agreement (See footnote 4 - Acquisitions).

Investment in Affiliate

     In December of 1999, the Company and Photon Research Associates, Inc. (PRA)
formed a joint venture company,  EarthScan Network, Inc. (EarthScan).  EarthScan
will deliver the most  sophisticated  satellite  images available to farmers and
their suppliers through the Internet (www.EarthScan.com).

     DTN and PRA each have  approximately  a 47% ownership of EarthScan and have
50% voting rights.  DTN contributed $3.0 million to EarthScan,  $.5 million cash
and a $2.5 million note. The note will be paid as the venture requires funds for
operating and investing activities.

CASH FLOW FROM FINANCING ACTIVITIES

     In 1999,  net cash used by financing  activities  of $16.0  million was the
result of a decrease in term debt  outstanding  of $21.6  million  offset by the
proceeds from the exercise of stock options of $5.6 million.

     In 1998,  net cash  provided by financing  activities  of $23.5 million was
primarily the result of an increase in total debt  outstanding of $27.5 million.
The  increase  in debt  outstanding  was  primarily  due to an increase of $51.0
million  in  the  revolving  credit  line  to  fund   acquisitions  and  capital
expenditures. The Company made $24.8 million of principal payments on term notes
and $5.2 million of payments on debt acquired through acquisitions.  The Company
also financed the  prepayment of the $15.0  million  11.25% Senior  Subordinated
Notes due 2004 and the $1.1 million  prepayment  cost with $16.0 million of term
notes and revolver.

FACTORS THAT MAY AFFECT FUTURE RESULTS

     Acquisitions - The Company's  strategy  includes  continued  growth through
acquisitions of complimentary  services,  technologies or businesses,  which may
result in the diversion of management's attention from the day-to-day operations
of the Company's business. Other risks include, but are not limited to, possible
difficulties  in  the   integration  of  operations,   products  and  personnel,

                                       34
                                     -326-
<PAGE>

difficulty in applying internal  controls to acquired  businesses and particular
problems, liabilities or contingencies related to the businesses being acquired.
If efforts to  integrate  past or future  acquisitions  fail,  there  could be a
material adverse effect on the Company's business,  financial condition, results
of operations and cash flows. The Company plans to pursue  opportunities that it
believes fit its business strategy.

     Competition  - The Company  operates in a highly  competitive  environment,
competing with information and communication services utilizing various types of
electronic media including satellite delivery,  the Internet, TV Cable delivery,
electronic  bulletin  boards,   television,   radio,   cellular,  and  telephone
communications.  In addition to the various electronic  publishers,  the Company
competes with print media and "old  information  gathering  habits." Many of the
Company's actual and potential  competitors have substantially greater resources
than the Company.

     Indebtedness - The Company anticipates that internally  generated cash flow
and its bank credit  lines will be  sufficient  to fund short term and long term
operating  activities,  capital  expenditures and service interest and principal
payments on long-term debt.

     Inflation - The Company  believes that  inflationary  trends have a limited
effect on the  business.  However,  since a large  percentage  of the  Company's
subscribers and revenues are related to the agricultural industries, the general
state of the agricultural  economy may impact the Company's business  operations
and financial condition.

     Technology  - The  business  of the  Company is  subject to the  continuous
changes in  information  distribution  technology  affecting how  information is
distributed to the Company's customers.  Currently,  the two primary information
distribution  technologies  the Company utilizes for the delivery of information
are  satellite  and  Internet.  Other  technologies  used  are the FM side  band
channels,  VBI (vertical  blanking  interval through a cable TV signal),  leased
land  lines,  wireless,  E-mail and Fax.  The  Company is not aware of any other
technology  that  may  replace  the  current  electronic  delivery  systems  and
equipment at a  competitive  price.  New  developments  in  electronic  hardware
capabilities  and in data  distribution  technologies  could cause the Company's
delivery systems and equipment to become obsolete,  economically  inefficient or
less  attractive  compared  to  available  alternatives.   The  improvement  and
enhancement  (and  subsequent  lower  cost) of  delivery  technologies  like the
Internet,  are providing the Company with  alternatives to its largest  delivery
method, which is satellite.

     Year 2000  (Y2K) - The  Company  engaged in a  comprehensive  review of its
computer systems to identify and remediate the systems that could be affected by
the Year 2000 issue. The Company assessed its state of readiness in the areas of
service delivery, customer service, cash flow and physical environment. This was
accomplished in four phases 1) inventory,  2) assessment of business impact,  3)
remediation  and 4) testing and management of subsequent  changes.  These phases
were all completed by December 31, 1999.

     The Company used  existing  internal  resources to complete all work on the
four phases,  and the cost of using internal resources through December 31, 1999
was $1.2  million.  The  Company  expects  that the cost of making any  on-going
changes will not be significant and will be less than $.2 million.

     The Company  continues to maintain a formal  contingency plan that would be
employed  in the event of any Y2K  failures.  Subsequent  to January 1, 2000 and
through  this report date of February 9, 2000,  the Company has not  experienced
any material Y2K failures.

     Accounting   Pronouncements  -  In  June  1998,  the  Financial  Accounting
Standards Board issued Statement No. 133. "Accounting for Derivative Instruments
and Hedging  Activities"  (SFAS 133), that would have been effective  January 1,
2000. In June 1999, the Financial  Accounting  Standards Board issued  Statement
No. 137, "Accounting for Derivatives Instruments and Hedging Activities-Deferral
of the Effective Date of FASB  Statement No 133",  postponing the effective date
for  implementing  SFAS 133 to fiscal years  beginning  after June 15, 2000. The
Company will adopt this Statement  effective  January 1, 2001. At this time, the
Company believes the impact of adopting this Statement should not be significant
to the results of operations or financial position.

     In December  1999,  the  Securities  and Exchange  Commission  issued Staff
Accounting  Bulletin  (SAB) No. 101 related to revenue  recognition in financial
statements. This SAB will affect the Company's recognition of service initiative
fees to require  these fees to be deferred and  recognized  over the term of the
service  arrangement or the expected period of performance.  The Company has not
completed the process of evaluating the impact of adopting this SAB. The Company
anticipates  adopting  the SAB in the first  quarter  of 2000 with a  cumulative
effect  adjustment as a change in accounting  principles in accordance  with APB
Opinion No. 20, Accounting Changes.

SUBSEQUENT EVENT

     On March 3, 2000,  the Company  entered  into a definitive  agreement  with
Veronis, Suhler & Associates  Communications Partners III, LP (VS&A III) whereby
VS&A III will  make a tender  offer to all of the  Company's  shareholders  at a

                                       35
                                     -327-
<PAGE>

price of $29.00 per share. The tender offer is subject to the tender of at least
90% of the  outstanding  shares  as of March 1,  2000.  If less  than 90% of the
outstanding  shares are  tendered,  the Company  will merge with an affiliate of
VS&A III at the same per share price.  Closing of the  transaction is subject to
government and  shareholder  approvals and other  customary  conditions,  and is
expected to occur during the second quarter of 2000.

MARKET RISK SENSITIVE INSTRUMENTS AND POSITIONS

     The risk inherent in the Company's  market risk sensitive  instruments  and
positions is the potential  loss arising from adverse  changes in interest rates
and equity prices, as discussed below.

     Interest Rates - The Company's earnings are affected by changes in interest
rates  due  to  the  impact  those  changes  have  on  its  variable-rate   debt
instruments.  The Company has three components that make up its total loan debt:
1) Fixed Term  Notes,  2)  Variable  Term Notes and 3)  Revolving  Credit  Line.
Assuming  a  hypothetical  10%  change  in 1999 and  1998  interest  rates,  the
following  is an  analysis  of what the impact  would have been on 1999 and 1998
interest expense:

                             Debt Balance           Percent            Interest
- --------------------------------------------------------------------------------

Fixed Term Notes             $  32,425,500            31%            $        -
Variable Term Notes             15,194,499            15%               113,400
Revolving Credit Line (a)       55,500,000            54%               412,900
Total                        $ 103,119,999           100%            $  526,300

                                                     1998
                             Debt Balance           Percent            Interest

Fixed Term Notes             $  49,822,540            41%            $        -
Variable Term Notes             16,926,000            14%               153,400
Revolving Credit Line (a)       55,500,000            45%               178,500
Total                        $ 122,248,540           100%            $  331,900



(a) The Company's  Revolving  Credit  Agreement  includes the ability to fix the
revolving  credit  line  based on the  Revolving  Credit  Rate in  effect at the
beginning  of the month (see Note 9). The  ability to look back to the  interest
rates at the  beginning of the month,  reduces the market risk of an increase in
First National Bank of Omaha's "National Base Rate".

     Market risk for fixed-rate  term debt is estimated as the potential  change
in fair value from a  hypothetical  change in  interest  rates.  The Company had
$32,425,500  and  $49,822,540 of fixed term debt with an estimated fair value of
$32,452,043  and  $50,395,940  or an  increase  of $26,543  and  $537,400  as of
December 31, 1999 and 1998,  respectively.  The fair value was calculated  using
existing  terms of the debt and interest  rates present  valued at the Company's
current available term debt rate (See Note 9).

     Warrants - The Company has an  investment  in security,  due to warrants in
SmarServ Online (SSOL), in which the value is related to the market price of the
stock. The implication of a change in value, due to market price changes, is not
reflected  in the  Company's  net income  (loss) but does  affect  comprehensive
income (loss) and Shareholders'  Equity. The market price of SSOL as of December
31, 1999 was $19.72 and as of the report  date of  February 9, 2000,  the market
price was $133.

RESULTS OF OPERATIONS

Revenues and Operating Cash Flow
in millions of dollars

<TABLE>
<CAPTION>

                        1995            1996            1997            1998            1999
                        ----            ----            ----            ----            ----
<S>                     <C>             <C>             <C>             <C>             <C>
Revenues                62.3            98.4            126.4           149.0           166.5
Operating Cash Flow     23.2            40.4            54.7            58.8*           62.7*
                                                                        53.0            57.9
</TABLE>

*Pro-Forma results before non-recurring satellite costs of $5.8 million for 1998
and  non-recurring  severance  costs  of $.7  million  and loss on sale of radar
operations of $4.1 million for 1999.

GENERAL OVERVIEW

     The  financial  dynamics  of  DTN's  business  operations  are  similar  to
businesses that sell monthly  subscriptions such as electronic  publications and
communications  and cable TV  companies.  The  financial  dynamics  are  similar
because DTN makes an initial  investment of variable  marketing  costs to obtain
new subscribers  (generally a one year  subscription  agreement) and the Company
makes a  capital  expenditure  to  provide  the  subscriber  with the  necessary
equipment  to  receive  the  Company's   satellite  based   services.   Internet
subscribers utilize their own personal computer.

     In addition,  DTN has a level of fixed costs,  including  satellite leases,
certain news, weather,  quotes and information  providers along with general and
administrative  expenses,  not  directly  affected by the number of  subscribers
receiving the Company's services.

SALE OF RADAR OPERATIONS

     In December of 1999, the Company sold the radar operations of its Kavouras,
Inc. subsidiary.  The assets were sold for $1.3 million and the Company recorded
a pre-tax loss of $4.1 million,  which was included in operating  expenses.  The
breakdown of these expenses were as follows: 1) $3.2 million related to the sale
of the inventory,  fixed assets, and intangibles,  2) an accrual of $1.2 million
for  costs  related  to the  severance  of  approximately  30  radar  operations
employees not retained by Kavouras (of which,  $.3 million was paid in 1999) and
3) the accrual of $.9  million  for other  operation  closing  costs.  The radar
operations recorded negative direct operating cash flow (not including allocated
Kavouras  administration  expenses)  for 1999 and 1998 of $1.3  million  and $.8
million on revenues of $1.5 million and $2.5 million respectively.

NON-RECURRING COSTS
Satellite Costs (Galaxy IV)

     On May 20,  1998,  nearly all of the  Company's  159,000  subscribers  were
unable to receive  their data due to loss of control of the Galaxy IV  satellite
by  PanAmSat.  This  satellite  was used by the Company to  transmit  service to
nearly all its  subscribers.  By May 21, 1998,  solutions were available for all
subscribers, however, the impacts on DTN operations were significant.

                                       36
                                     -328-
<PAGE>

     The costs  related to the failure of Galaxy IV include  telecommunications,
overtime labor,  satellite costs and customer  communications and these unusual,
non-recurring  satellite  costs were $5.8  million and  recorded in May of 1998.
These costs  included  costs to convert  subscribers  to the new  satellite  and
handle the large customer service call volume,  duplicate  satellite charges and
other service costs related to this change.

     Although  the Company  believes the charge was  reasonable,  the impact and
cost of customer  retention  is more  difficult to quantify and actual costs may
have varied. The Company's management believes the impact from this problem will
not significantly impact the longer-term growth prospects of the Company.

Severance Costs

     During the first quarter of 1999, the Company incurred  non-recurring costs
of $.7 million for severance  payments  primarily  related to the resignation of
the  Company's  Chairman  and CEO.  The former  Chairman  and CEO received a $.5
million cash severance payment, as approved by the Board of Directors,  upon his
resignation in March of 1999.


OPERATING CASH FLOW (EBITDA)

     The Company's operating cash flow (operating income before depreciation and
amortization  expense),  known  in  the  industry  as  EBITDA  (earnings  before
interest,  taxes,  depreciation and amortization  expenses),  is a key indicator
monitored by DTN management.

     EBITDA should not be considered in isolation  from, or as a substitute for,
operating income, net income or cash flows from operating activities computed in
accordance with generally accepted accounting  principles.  While not a required
disclosure under generally accepted  accounting  principles,  EBITDA is a widely
used  measure of a company's  performance  in its  industry.  EBITDA  assists in
comparing  performance on a consistent  basis without regard to depreciation and
amortization,  which may vary  significantly  depending  on  accounting  methods
(particularly  when  acquisitions  may be  involved).  Management of the Company
believes  that EBITDA is a  meaningful  measure  given the  widespread  industry
acceptance as a basis for financial analysis.  Further, certain covenants of the
Company's debt  agreements are based upon EBITDA,  as defined above.  Due to the
variety of methods  that may be used by  companies  and  analysts  to  calculate
EBITDA,  the EBITDA  measures  presented  herein may not be  comparable  to that
presented by other companies.

     The  following  graph  details  the  trend  in  operating  cash  flow  as a
percentage of revenue to illustrate operating leverage.

Operating Cash Flow
percent of revenue

1995            1996            1997            1998            1999
- ----            ----            ----            ----            ----

37              41              43              40*             38*
                                                36              35
     *Pro-Forma results before non-recurring satellite costs of $5.8 million for
1998 and non-recurring  severance costs of $.7 million and loss on sale of radar
operations of $4.1 million for 1999.

     Growth in operating  cash flow results from a growing base of  subscribers,
as well as,  increased  revenues per  subscriber  covering the  Company's  fixed
expenses. Operating cash flow for 1999 increased 9% to $57.9 million compared to
$53.0 million for 1998. Excluding  non-recurring  severance costs of $.7 million
and  loss  on  sale  of  radar  operations  of  $4.1  million  in  1999  and the
non-recurring  satellite costs of $5.8 million in 1998,  operating cash flow for
1999 would have been $62.7 million compared to $58.8 million for 1998.

     Operating  cash flow as a percent of revenue  (operating  cash flow margin)
for 1999 was  34.8%  compared  to 35.6% for 1998.  Excluding  the  non-recurring
costs, and loss on sale of radar operations, operating cash flow margin for 1999
would have been 37.7% compared to 39.5% for 1998.

     Kavouras  equipment  sales have lower  operating cash flow margins and have
decreased the Company's  total  operating cash flow margin.  A further  analysis
shows that,  excluding the Kavouras operating results,  non-recurring costs, and
loss on sale of radar operations, operating cash flow margin for 1999 would have
been 43.2% compared to 42.5% for 1998.

FREE CASH FLOW

     Free cash flow is defined as operating cash flow (EBITDA) less property and
equipment capital expenditures and interest,  and is a measurement used by DTN's
management  team to monitor the Company's  source of funds available to grow the
business.  Free cash flow for 1999  increased 68% to $25.9  million  compared to
$15.4 million for 1998.

     Property and equipment capital expenditures for 1999 were down 20% to $23.2
million compared to $29.1 million for 1998.  Included in 1999 and 1998 were $8.6
million and $3.1 million,  respectively of one-time  expenditures  primarily for
satellite  equipment,  the DTN for  Windows  (DIRECTV)  project,  and  other new
product initiatives.

     Excluding the non-recurring costs, and one-time capital expenditures,  free
cash flow for 1999 would have  increased 62% to $39.3 million  compared to $24.3
million for 1998.

                                       37
                                     -329-
<PAGE>

DEBT LEVERAGE RATIO

     The  Company's  debt  leverage  ratio is  defined as total  long-term  debt
(including  current  portion)  divided by last twelve months operating cash flow
(EBITDA). The debt leverage ratio was 1.8 for the period ended December 31, 1999
compared to 2.3 for the period ended December 31, 1998.

     The debt leverage  ratio at December 31, 1999 is based on $103.1 million of
total long-term debt  (including  current  portion)  divided by $57.9 million of
last twelve  months  operating  cash flow  (EBITDA)  for the twelve month period
ending December 31, 1999. This ratio  demonstrates the Company's  ability to pay
off total  long-term debt  (including  current  portion) in 1.8 years.  The debt
leverage ratio at December 31, 1998 is based on $122.2 million of long-term debt
(including  current  portion)  divided by $53.0  million of last  twelve  months
operating  cash flow  (EBITDA) for the twelve month period  ending  December 31,
1998.

NET DEVELOPMENT COSTS

     Operating cash flow is affected by the Company's  research and  development
activities.   DTN  accumulates  research  and  development  activities  as  "Net
Development  Costs".  The Company defines "Net  Development  Costs" as 1) market
research  activities,  2)  hardware  and  software  engineering,   research  and
development,  and 3) the  negative  operating  cash  flow  (prior  to  corporate
allocations plus interest) of new services. The Company includes new services in
the "Net  Development  Costs"  classification  until the service shows  positive
operating  cash flow prior to  corporate  allocations  plus  interest for a full
quarter.  The service  becomes a core service  after  reaching this level in the
developmental process.

     During  1998,  the  Company's  developmental  activities  increased to $6.5
million  compared  to $5.2  million  for  1997,  with  the  Kavouras  operations
(acquired in July 1998) contributing $1.3 million. Operating cash flow margin in
1998 declined to 35.6% compared to 43.3% in 1997. This decline was primarily due
to the $5.8 million non-recurring satellite costs and the Kavouras operations as
discussed in the Operating Cash Flow segment above. Core services operating cash
flow margin for 1998  decreased to 40.8%  compared to 48.5% for 1997.  Excluding
Kavouras  operating  results and  non-recurring  satellite costs,  core services
operating  cash flow margin for 1998 would have been 48.1% compared to 48.5% for
1997.

     During 1999, the Company's development activities increased to $7.3 million
compared to $6.5  million for 1998,  with the Kavouras  operations  contributing
$2.5 million.  Operating cash flow margin decreased to 34.8% in 1999 compared to
35.6% in 1998.  Core  services  operating  cash flow  margin  for 1999 was 39.4%
compared to 40.7% for 1998. Excluding Kavouras operating results,  non-recurring
costs, and loss on sale of radar operations,  core services  operating cash flow
margin for 1999 would have been 48.5% compared to 48.1% for 1998.

1999 COMPARED TO 1998

     The 1999 operating  results were affected by a continued  weak  agriculture
economy, the sale of the radar business and strategic  acquisitions completed by
the  Company.  The  operating  results  for 1999  include  twelve  months of the
operations of Kavouras,  Inc.  (Kavouras),  acquired in July 1998.  The Kavouras
operations,  including the Weather Services  Corporation (WSC)  operations,  are
included in the Weather Services division of the Company.
                                                                    PERCENT
In Thousands                     1999             1998              CHANGE
- -------------------------------------------------------------------------------

Subscribers                      166.9             159.3               5 %
Revenues                      $166,509          $148,986              12 %
Operating cash flow             57,884            53,014               9 %
Operating income                 4,157             4,163               -
Net loss                      $ (3,707)         $ (3,743)              1 %



REVENUES

     Total revenue increased 12% for 1999 compared to 1998.  Recurring operating
revenues, consisting of subscriptions,  additional services,  communications and
advertising,  increased to $80 per subscriber per month for 1999 compared to $74
for 1998.

     The Company  attributes  the revenue  increases  for 1999  compared to 1998
primarily to revenue  generated by the increase in  subscribers,  an increase in
average  subscription  rates and acquisitions.  At a segment level, three of the
Company's  main  segments  (Weather  Services,  Financial  Services  and  Energy
Services)  showed solid  revenue  growth for 1999  compared with the prior year.
This  growth  was  primarily  driven  by  an  increasing   subscriber  base  and
acquisitions, as well as, upgrading the existing customers to more sophisticated
and higher priced services. The Ag Services segment showed a decrease in revenue
for 1999  compared  with the prior year,  due to the  continued  weakness in the
agricultural  economy.  The increase in total Company revenues resulted in total
revenues per subscriber per month increasing to $85 for 1999 compared to $77 for
1998.

     Subscriptions  -  Subscription  revenue for 1999 grew 12% to $134.0 million
compared  to  $119.5  million  for  1998.  The  increase  was  primarily  due to
acquisitions completed in 1999 and 1998, increases in total subscribers, and the
ability to move  subscribers  to higher priced  services.  The increase in total
subscribers  in 1999 was primarily due to  acquisition  activities.  The Company
added 7,500 subscribers from acquisitions.  The Weather,  Financial Services and
Energy  divisions  all  increased  subscribers  on  a  net  basis.   Agriculture
subscribers  declined but the retention  rate improved in 1999 compared to 1998.
The Kavouras operations (including WSC operations)  contributed $13.2 million of
subscription  revenue to the Weather  Services  division of the Company for 1999
and $5.1 million for 1998 on a consolidated  basis.  This revenue  accounted for
56% of the $14.4  million  increase in the Company's  subscription  revenues for
1999 and 28% of the $18.3 million increase for 1998.

                                       38
                                     -330-
<PAGE>

     The increase in subscribers  from new  subscription  sales and acquisitions
for 1999 resulted in total  subscription  revenues on a per subscriber per month
basis  of $68  compared  to $62  for  1998.  The  Company  continues  to add new
subscribers at higher subscription rates.  Subscription  revenue per subscriber,
per month for all new subscription sales in 1999 was $74.

     Equipment Sales - The Company's July 1, 1998 acquisition of Kavouras, Inc.,
added a new market niche for the Company,  the  manufacture  and sale of various
meteorological  equipment and radar systems. The Kavouras acquisition added $6.1
and $4.8 million of meteorological  equipment and radar sales for 1999 and 1998,
respectively.  This accounted for the majority of the Company's  equipment sales
for 1999 and 1998.

     In December 1999, the Company sold the radar  operations of Kavouras,  Inc.
The  Kavouras  radar  revenues  were $1.5  million for 1999 and $2.5 million for
1998. The revenues from  meteorological  equipment grew to $4.6 million compared
to $2.3  million for 1998  primarily  due to the  introduction  of the Triton RT
system.

     Additional Services - The Company offers a variety of "a la carte" optional
services.  Additional services revenues grew 13% for 1999 compared to 1998. This
increase is  primarily  due to the growth in the  Financial  Services and Energy
segments related to new products and acquisitions.

     Communication Services - The growth in communications revenue was primarily
in the Energy Services  division.  The DTNergy service  transmits refiner prices
and   communications   to   wholesaler/subscribers.   The   number  of   refiner
communications  (messages)  increased and helped produce a total company revenue
growth of 15% for 1999 over 1998.

     Advertising  -  Advertising  revenue  fell 9% to  $3.1  million  for  1999,
compared to $3.5 million for 1998. The Agricultural  Services  division accounts
for the majority of advertising revenues, therefore, the agriculture economy has
negatively impacted the 1999 and 1998 advertising revenues of the Company.

     Service Initiation Fees - Service initiation fees revenue for 1999 fell 30%
to $2.3  million  compared  to $3.3  million  for 1998.  This  decline is due to
discounting in the Agricultural Services division, the direct result of the weak
agricultural economy.

EXPENSES

     Total operating  expenses for 1999 increased 12% to $162.4 million compared
to $144.8 million for 1998.  Excluding the non-recurring  severance costs of $.7
and $4.1 million  loss on sale of radar  operations  for 1999 and  non-recurring
satellite costs of $5.8 million for 1998, total expenses for 1999 and 1998 would
have been $157.5 million and $139.0 million, respectively. The increase in total
operating expenses,  excluding  non-recurring costs, was primarily due to having
the  Kavouras  operations  (including  WSC  operations)  for 12  months  in 1999
compared to 6 months in 1998 and the  amortization  expense  from  acquisitions.
Total operating expenses (excluding sales commissions,  cost of equipment sales,
non-recurring  costs and loss on sale of radar  operations)  increased  on a per
subscriber per month basis to $71 for 1999 compared to $65 for 1998.

     Selling,  General and Administrative - Selling,  general and administrative
expenses on a per  subscriber per month basis for 1999 increased to $44 compared
to $39  for  1998.  These  costs  increased  in  1999 as a  result  of  expenses
associated with acquisitions.  Selling,  general and administrative  expenses in
1999 grew 15% compared to 1998 and as a percentage  of revenue  increased to 52%
in 1999 compared to 50% in 1998. Selling,  general and administrative  expenses,
excluding selling, general and administrative related to the Kavouras operations
(including WSC operations), remained flat in 1999 compared to 1998.

     Cost of Equipment  Sales - Cost of  equipment  sales for 1999 and 1998 were
$5.2 million and $4.2 million,  respectively.  These expenses were primarily the
direct result of the Kavouras  acquisition  which brought a new market niche for
the Company,  the manufacture and sale of various  meteorological  equipment and
radar systems.  The Kavouras radar  operation was sold in December of 1999. Cost
of equipment  sales  related to the radar  operations  were $1.8 million in 1999
compared to $2.5 million in 1998.

     Sales  Commissions - Sales  commissions are generated from new subscription
sales and cash flows related to the DTNergy service. Sales commissions increased
13% during  1999  compared  to 1998.  This  increase  is  primarily  a result of
Kavouras  operations  (including WSC operations) and an increase in DTNergy cash
flows in which  sales  commissions  in the  energy  division  are  based.  Sales
commissions,  excluding sales  commissions  related to the Kavouras  operations,
grew 9% in 1999 compared to 1998.

     Depreciation and  Amortization - Depreciation and amortization  expense for
1999  increased  10% to $53.7 million  compared to $48.9 million for 1998.  This
increase  is  primarily  due to the  increase  in  amortization  related  to the
intangible assets  (primarily  goodwill) from  acquisitions.  As a percentage of
total revenues,  depreciation and amortization expense for 1999 was 32% compared
to 33% in 1998.  Depreciation  and  amortization  expense  for  1999,  excluding
depreciation and  amortization  related to the Kavouras  operations,  grew 4% in
1999 compared to 1998.

     Loss on Sale of Radar Operations - The loss on the sale of radar operations
was $4.1 million for 1999.  This loss was due to the sale of the Kavouras  radar
operations in December of 1999. The loss included the sale of assets,  severance
and other operation closing costs.

OPERATING INCOME
     Operating  income (EBIT) was $4.2 million for 1999 and 1998,  respectively.
Excluding  non-recurring severance costs of $.7 million and $4.1 million loss on
sale of radar  operations  in 1999  and  non-recurring  satellite  costs of $5.8
million  for 1998,  operating  income  for 1999  would  have  been $9.0  million
compared to $10.0 million for 1998.  Operating  income  excluding  non-recurring

                                       39
                                     -331-
<PAGE>

costs and loss on sale of radar  operations,  and before  amortization  expenses
related to  acquisitions  increased  18% to $21.7  million for 1999  compared to
$18.4 million for 1998.

INTEREST EXPENSE
     Interest  expense for 1999  increased 4% to $8.8  million  compared to $8.4
million  for  1998.  This  increase  is  primarily  due to higher  average  debt
outstanding.  As a  percentage  of  total  revenue,  interest  expense  for 1999
decreased to 5% compared to 6% for 1998.

EQUITY IN LOSS OF AFFILIATE
     The equity loss of  affiliate  for 1999 was $.2  million.  This loss is the
result of the joint venture formed by the Company and Photon  Research,  Inc. in
December  of 1999.  The losses are a result of  certain  operating  costs at the
start of the joint venture.

OTHER INCOME (EXPENSE)
     During 1998, the Company  received a federal income tax refund from amended
returns for prior years and as a result,  recorded one time  interest  income of
$181,000 from those refunds.

INCOME TAX BENEFIT
     The Company's  federal and state effective tax benefit rate was 23% and 34%
for 1999 and 1998,  respectively.  The change is primarily due to non-deductible
goodwill from acquisitions.

LOSS BEFORE EXTRAORDINARY ITEM
     The loss before  extraordinary  item for 1999 was $3.7  million or $.32 per
share on a diluted  basis  compared to a loss of $2.7  million or $.24 per share
for 1998. Excluding the non-recurring severance and satellite costs and the loss
on the sale of radar  operations,  the loss before  extraordinary  item for 1999
would have been $.6  million or $.05 per share on a diluted  basis  compared  to
income of $1.0 million or $.09 per share on a diluted basis for 1998.

EXTRAORDINARY ITEM, NET OF TAX
     During the first quarter of 1998, the Company  refinanced  the  $15,000,000
11.25%  Senior  Subordinated  Notes due 2004 with 7.5% Senior  Term  Notes.  The
Company  incurred a one-time charge to earnings of $1.1 million,  net of tax, or
$.09 per share on a diluted basis.  This one-time charge was for the pre-payment
penalties  and  write-offs  for debt  issuance  and  discount  costs  not  fully
amortized related to the subordinated notes.

NET INCOME (LOSS)
     The net loss for 1999 was $3.7 million or $.32 per share on a diluted basis
compared to a net loss of $3.7 million or $.33 per share for 1998. Excluding the
non-recurring  severance  and  satellite  costs,  loss  on  the  sale  of  radar
operations and the  extraordinary  item discussed  above,  the net loss for 1999
would have been $.6 million or $.05 per share on a diluted basis compared to net
income of $1.0 million or $.09 per share on a diluted basis for 1998.

1998 COMPARED TO 1997
     The 1998 operating  results were affected by the weak agriculture  economy,
the satellite  outage and the strategic  acquisitions  completed by the Company.
The operating results for 1998 include six months of the operations of Kavouras,
Inc. (Kavouras),  acquired in July 1998. The Kavouras operations are included in
the  Weather  Services  division  of  the  Company.  Operating  income  declined
primarily  due to the $5.8  million  non-recurring  satellite  costs and  higher
amortization expense related to acquisitions.


                                                                      PERCENT
In Thousands                     1998              1997                CHANGE
- ------------------------------------------------------------------------------

Subscribers                      159.3             158.8                   -
Revenues                      $148,986          $126,374                18 %
Operating cash flow             53,014            54,699                (3)%
Operating income                 4,163            12,383               (66)%
Net income (loss)               (3,743)            2,236                   -


REVENUES

     Total revenue increased 18% for 1998 compared to 1997.  Recurring operating
revenues, consisting of subscriptions,  additional services,  communications and
advertising,  increased to $74 per subscriber per month for 1998 compared to $66
for 1997.

     Subscriptions  -  Subscription  revenue for 1998 grew 18% to $119.5 million
compared  to  $101.2  million  for  1997.  The  increase  was  primarily  due to
acquisitions completed in 1998, increases in total subscribers,  and the ability
to move subscribers to higher priced services. The increase in total subscribers
in 1998 was primarily  due to  acquisition  activities.  The Company added 3,300
subscribers  from  acquisitions  and  incurred  a  loss  of  2,800  subscribers,
excluding the acquired subscribers, due to lower retention. The Company believes
the lower retention is due to lower commodity prices in the Agriculture industry
and the Galaxy IV satellite outage.  The Kavouras  acquisition  contributed $4.5
million of subscription  revenue on a consolidated basis to the Weather Services
division of the Company.  This revenue  accounted  for 24% of the $18.3  million
increase in the Company's subscription revenues.

     The Company continues to add new subscribers at higher  subscription rates.
Subscription revenue per subscriber, per month for all new subscription sales in
1998 was $77  compared to $68 for 1997.  The  increase in  subscribers  from new
subscription sales and acquisitions resulted in total subscription revenues on a
per  subscriber  per month basis to increase for 1998 to $63 compared to $55 for
1997.

     Equipment Sales - The Company's July 1, 1998 acquisition of Kavouras, Inc.,
in  Minneapolis,  added a new market niche for the Company,  the manufacture and

                                       40
                                     -332-
<PAGE>

sale of  various  meteorological  equipment  and  radar  systems.  The  Kavouras
acquisition added $4.8 million of  meteorological  equipment and radar sales for
1998. This accounted for the majority of the Company's equipment sales for 1998.

     Additional  Services - The  Company  increased  the  number of  information
services  through  "a la carte"  optional  services  (230 in 1998  versus 200 in
1997). The growth in services,  subscribers and marketing  efforts resulted in a
5% increase in additional service revenues.

     Communication Services - The growth in communications revenue was primarily
in the Energy Services  division.  The DTNergy service  transmits refiner prices
and   communications   to   wholesaler/subscribers.   The   number  of   refiner
communications  increased and produced a revenue growth of 7% in 1998 over 1997.

     Advertising  -  Advertising  revenue  fell 9% to  $3.5  million  for  1998,
compared to $3.8 million for 1997.  Advertising had a record year in 1997 fueled
by strong advertising  related to new product  introductions by companies in the
agriculture  industry.  The  Agricultural  Services  division  accounts  for the
majority  of  advertising  revenues,  therefore,  the  recent  downturn  in  the
agriculture economy has negatively impacted the 1998 advertising revenues of the
Company.

     Service Initiation Fees - Service initiation fees revenue for 1998 fell 29%
to $3.3 million compared to $4.6 million for 1997. This decline is due to slower
sales in the  Agricultural  Services  division,  the  direct  result of the weak
agricultural economy, and the inability of the Company's sales force to focus on
new sales while assisting  subscribers for three months related to the satellite
outage.

EXPENSES

     Total operating  expenses for 1998 increased 27% to $144.8 million compared
to  $114.0  million  for  1997.  Excluding  the $5.8  million  of  non-recurring
satellite  costs  related to Galaxy IV, total  expenses for 1998  increased  22%
compared  to  1997.  The  increase  in  total  operating   expenses,   excluding
non-recurring  satellite  costs,  was primarily  due to the Company's  growth in
subscribers,  initiatives to expand distribution  programs, the $11.2 million of
operating expenses from the Kavouras operations (including $4.1 million of costs
of equipment sales) and the amortization expense from other acquisitions.  Total
operating  expenses  (excluding sales  commissions,  cost of equipment sales and
non-recurring  satellite costs) increased on a per subscriber per month basis to
$65 for 1998 compared to $57 for 1997.

     Selling,  General and Administrative - Selling,  general and administrative
expenses on a per  subscriber per month basis for 1998 increased to $39 compared
to $34  for  1997.  These  costs  increased  in  1998 as a  result  of  expenses
associated  with  acquisitions  and  the  initiatives  to  expand   distribution
programs. Selling, general and administrative expenses in 1998 grew 21% compared
to 1997 and as a percentage of revenue increased to 50% compared to 49% in 1997.
Selling,  general and administrative  expenses,  excluding selling,  general and
administrative related to the Kavouras operations,  grew 13% in 1998 compared to
1997.

     Cost of  Equipment  Sales - Cost of  equipment  sales  for  1998,  was $4.2
million.  These  expenses  were  primarily  the  direct  result of the  Kavouras
acquisition  which brought a new market niche for the Company,  the  manufacture
and sale of various meteorological equipment and radar systems.

     Sales  Commissions - Sales commissions are generated from new subscriptions
sales and cash flows related to the DTNergy service. Sales commissions increased
12% during 1998 compared to 1997. This increase is due to incentive  programs to
the national sales force and sales  management  related to initiatives to expand
distribution programs. Sales commissions, excluding sales commissions related to
the Kavouras operations, grew 7% in 1998 compared to 1997.

     Depreciation and  Amortization - Depreciation and amortization  expense for
1998  increased 15% to $48.9 million  compared to $42.3 million for 1997.  These
increases  are  primarily  due to the increase in  subscriber  equipment for the
added subscribers,  increase in subscriber  equipment inventory and amortization
related to the intangible assets (primarily  goodwill) from  acquisitions.  As a
percentage of total revenues, depreciation and amortization expense for 1998 and
1997 remained  level at 33%.  Depreciation  and  amortization  expense for 1998,
excluding depreciation and amortization related to the Kavouras operations, grew
11% in 1998 compared to 1997.

OPERATING INCOME
     Operating  income (EBIT) for 1998 decreased 66% to $4.2 million compared to
$12.4 million for 1997. Excluding the $5.8 million non-recurring satellite costs
related to Galaxy IV,  operating  income for 1998 was $10.0 million  compared to
$12.4  million  for 1997.  These  decreases  in  operating  income  for 1998 are
primarily  related to lower  operating  income from acquired  operations  due to
lower   operating  cash  flow  margins  and  increased   amortization   expense.
Amortization  expense related to acquisitions was $8.4 million for 1998 compared
to $5.9 million for 1997.

INTEREST EXPENSE
     Interest  expense for 1998  decreased 7% to $8.4  million  compared to $9.1
million for 1997. In the first quarter of 1998 the Company refinanced its 11.25%
Senior  Subordinated  Notes down to 7.5%  Senior  Term notes  which had a direct
impact on interest  expense in 1998  compared to 1997.  As a percentage of total
revenue, interest expense for 1998 decreased to 6% compared to 7% for 1997.

                                       41
                                     -333-
<PAGE>

OTHER INCOME (EXPENSE)
     During 1998, the Company  received a federal income tax refund from amended
returns for prior years and as a result,  recorded one time  interest  income of
$181,000 from those refunds.

INCOME TAX PROVISION (BENEFIT)
     The  Company's  federal and state  effective tax rate was 34% for both 1998
and 1997.

INCOME (LOSS) BEFORE EXTRAORDINARY ITEM
     The loss before  extraordinary  item for 1998 was $2.7  million or $.24 per
share on a diluted  basis  compared to income of $2.2  million or $.19 per share
for 1997.  Excluding  the  non-recurring  satellite  costs,  the  income  before
extraordinary  item for 1998 would have been $1.0 million or $.09 per share on a
diluted basis.

EXTRAORDINARY ITEM, NET OF TAX
     During the first quarter of 1998, the Company  refinanced  the  $15,000,000
11.25%  Senior  Subordinated  Notes due 2004 with 7.5% Senior  Term  Notes.  The
Company  incurred a one-time charge to earnings of $1.1 million,  net of tax, or
$.09 per share on a diluted basis.  This one-time charge was for the pre-payment
penalties  and  write-offs  for debt  issuance  and  discount  costs  not  fully
amortized related to the subordinated notes.

NET INCOME (LOSS)
     The net loss for 1998 was $3.7 million or $.33 per share on a diluted basis
compared to net income of $2.2 million or $.19 per share for 1997. Excluding the
non-recurring  satellite costs and the  extraordinary  item discussed above, the
net income for 1998 would have been $1.0  million or $.09 per share on a diluted
basis.

                                       42
                                     -334-
<PAGE>
(Photograph)
DTN's accounting  functions span several  divisions and geographical  locations,
all under the  watchful  eye of Daniel A.  Petersen,  Corporate  Controller  and
Treasurer, and his team.

Management's Responsibility for Financial Statements

To Our Stockholders:
     The management of Data Transmission  Network Corporation is responsible for
the  preparation,  integrity  and  objectivity  of  the  accompanying  financial
statements  and related  notes.  To meet these  responsibilities,  we maintain a
system of internal  controls  to provide  reasonable  assurance  that assets are
safeguarded and transactions are properly authorized and recorded.

     The financial  statements  have been prepared in conformity  with generally
accepted accounting  principles and include amounts based upon our estimates and
judgments, as required. The financial statements have been audited by Deloitte &
Touche LLP who have expressed their opinion,  presented  below,  with respect to
the fairness of the  statements.  Their audit included a review of the system of
internal  control  and  tests of  transactions  to the  extent  they  considered
necessary to render their opinion.

     The Audit Committee of the Board of Directors is composed solely of outside
directors.  The Audit Committee meets periodically with our independent auditors
and management to review  accounting,  auditing,  internal control and financial
reporting matters.

/s/ Greg T. Sloma                        /s/ Brian L. Larson
- ----------------------                   -------------------------
Greg T. Sloma                            Brian L. Larson
President                                Senior Vice President
Chief Operating Officer                  Chief Financial Officer and Secretary




Independent Auditor's Report

Board of Directors and Stockholders
Data Transmission Network Corporation

     We have  audited  the  accompanying  consolidated  balance  sheets  of Data
Transmission  Network  Corporation and  subsidiaries as of December 31, 1999 and
1998,  and the related  consolidated  statements  of  operations,  shareholders'
equity and cash flows for each of the three years in the period  ended  December
31, 1999.  These financial  statements are the  responsibility  of the Company's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements based on our audits.

     We conducted  our audits in accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

     In our opinion,  such consolidated  financial statements present fairly, in
all material  respects,  the  financial  position of Data  Transmission  Network
Corporation  and  subsidiaries as of December 31, 1999 and 1998, and the results
of its  operations  and its cash flows for each of the three years in the period
ended  December 31, 1999,  in  conformity  with  generally  accepted  accounting
principles.


/s/ Deloitte & Touche LLP
- --------------------------
Deloitte & Touche LLP
Omaha, Nebraska
February 9, 2000
(March 3, 2000 as to note 18)

                                       43
                                     -335-
<PAGE>


Consolidated Balance Sheets
As of December 31, 1999 and 1998
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------------------
                                                                                                   1999                1998
- --------------------------------------------------------------------------------------------------------------------------------
Assets
Current Assets
<S>                                                                                           <C>                  <C>
 Cash                                                                                         $       -            $       -
 Accounts receivable, net of allowance for doubtful accounts of $1,800,000 and $1,300,000       10,073,472           10,475,426
 Note Receivable                                                                                   412,142                 -
 Investment in securities                                                                        3,675,000                 -
 Inventory                                                                                       1,480,922            3,575,580
 Prepaid expenses                                                                                1,961,613            2,219,778
 Deferred commission expense                                                                     2,844,195            2,695,475
                                                                                              ------------         ------------
   Total Current Assets                                                                         20,447,344           18,966,259
Investment in affiliate                                                                          2,788,024                 -
Property and Equipment
 Equipment Used By Subscribers                                                                 258,211,698          244,613,085
 Other Property and Equipment                                                                   47,082,196           38,788,491
                                                                                              ------------         ------------
   Total Property and Equipment                                                                305,293,894          283,401,576
 Less: Accumulated Depreciation                                                                214,172,557          174,164,486
                                                                                              ------------         ------------
   Net Property and Equipment                                                                   91,121,337          109,237,090
Intangible Assets From Acquisitions                                                             92,564,678           82,266,913
 Less: Accumulated Amortization                                                                 30,661,366           18,121,533
                                                                                              ------------         ------------
   Net Intangible Assets                                                                        61,903,312           64,145,380
Other Assets                                                                                     7,743,161            4,836,353
                                                                                              ------------         ------------
Total Assets                                                                                  $184,003,178         $197,185,082
- --------------------------------------------------------------------------------------------------------------------------------
Liabilities and Shareholders' Equity
Current Liabilities

 Accounts payable                                                                             $  6,822,995         $  5,820,579
 Accrued expenses                                                                                9,184,969            8,963,856
 Current portion of long-term debt                                                              24,081,667           21,628,542
                                                                                              ------------         ------------
   Total Current Liabilities                                                                    40,089,631           36,412,977
Revolving Debt                                                                                  55,500,000           55,500,000
Long-Term Debt                                                                                  23,538,332           45,119,998
Equipment Deposits                                                                                 383,009              653,753
Unearned Revenue                                                                                26,995,286           27,348,468
Commitments and Contingencies
Shareholders' Equity
 Common stock, par value $.001, authorized 20,000,000 shares, issued 11,985,319
 and 11,516,392                                                                                     11,985               11,516
 Paid-in capital                                                                                41,724,043           35,022,787
 Accumulated deficit                                                                            (6,591,108)          (2,884,417)
 Accumulated other comprehensive income                                                          2,352,000                 -
                                                                                              ------------         ------------
Total Shareholders' Equity                                                                      37,496,920           32,149,886
                                                                                              ------------         ------------
Total Liabilities and Shareholders' Equity                                                    $184,003,178         $197,185,082


The accompanying notes are an integral part of these financial statements.


</TABLE>
                                       44
                                     -336-
<PAGE>




Consolidated Statements of Operations
Years ended December 31, 1999, 1998 and 1997
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                       1999                    1998                    1997
- ------------------------------------------------------------------------------------------------------------------------------------
Revenues
<S>                                                                <C>                    <C>                    <C>
 Subscriptions                                                     $  133,991,755         $  119,543,225         $  101,194,290
 Equipment sales                                                        6,727,485              4,871,481                   -
 Additional services                                                    7,976,731              7,059,007              6,694,754
 Communication services                                                12,381,509             10,787,952             10,050,073
 Advertising                                                            3,129,052              3,455,194              3,809,748
 Service initiation fees                                                2,302,070              3,269,487              4,625,487
                                                                   --------------         --------------         --------------
                                                                      166,508,602            148,986,346            126,374,352
Expenses                                                           --------------         --------------         --------------

 Selling, general and administrative                                   86,086,879             74,919,319             61,790,861
 Cost of equipment sales                                                5,205,275              4,192,737                   -
 Sales commissions                                                     12,475,315             11,060,492              9,884,783
 Depreciation and amortization                                         53,727,233             48,850,622             42,315,305
 Loss on sale of radar operations                                       4,121,319                   -                      -
 Non-recurring costs                                                      735,828              5,800,000                   -
                                                                   --------------         --------------         --------------
                                                                      162,351,849            144,823,170            113,990,949
                                                                   --------------         --------------         --------------
Operating Income                                                        4,156,753              4,163,176             12,383,403
 Interest expense                                                      (8,820,476)            (8,449,668)            (9,098,231)
 Equity in loss of affiliate                                             (211,976)                  -                      -
 Other income, net                                                         70,539                217,929                121,909
                                                                   --------------         --------------         --------------
Income (Loss) Before Income Taxes and Extraordinary Item               (4,805,160)            (4,068,563)             3,407,081
 Income tax (benefit) provision                                        (1,098,469)            (1,402,684)             1,171,000
                                                                   --------------         --------------         --------------
Income (Loss) Before Extraordinary Item                                (3,706,691)            (2,665,879)             2,236,081
Extraordinary Item, Net of tax                                               -                 1,076,880                   -
                                                                   --------------         --------------         --------------
Net Income (Loss)                                                  $   (3,706,691)        $   (3,742,759)        $    2,236,081
- ------------------------------------------------------------------------------------------------------------------------------------
Basic Income (Loss) Per Share
 Income (loss) before Extraordinary Item                           $        (0.32)        $        (0.24)        $         0.20
 Extraordinary Item, net of tax                                              -                     (0.09)                  -
- ------------------------------------------------------------------------------------------------------------------------------------
 Net Income (loss)                                                 $        (0.32)        $        (0.33)        $         0.20
- ------------------------------------------------------------------------------------------------------------------------------------
Diluted Income (Loss) Per Share
 Income (loss) before Extraordinary Item                           $        (0.32)        $        (0.24)        $         0.19
 Extraordinary Item, net of tax                                              -                     (0.09)                  -
- ------------------------------------------------------------------------------------------------------------------------------------
 Net Income (loss)                                                 $        (0.32)        $        (0.33)        $         0.19
- ------------------------------------------------------------------------------------------------------------------------------------
Basic Shares Outstanding                                               11,734,190             11,358,934             11,100,684
Diluted Shares Outstanding                                             11,734,190             11,358,934             12,082,556


The accompanying notes are an integral part of these financial statements.

</TABLE>
                                       45
                                     -337-
<PAGE>



Consolidated Statement of Shareholders' Equity
Years ended December 31, 1997, 1998 and 1999
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                    Accumulated
                                                                     Retained                         Other               Total
                              Common       Common      Paid-in       Earnings       Treasury       Comprehensive       Shareholders'
                              Shares        Stock      Capital       (Deficit)        Stock           Income              Equity
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                         <C>           <C>         <C>           <C>            <C>              <C>                <C>
Balance, January 1, 1997    11,074,224    $ 11,074    $ 30,025,990  $ (1,404,602)  $(342,173)       $      -           $ 28,290,289
Net income                                    -               -        2,236,081        -                  -              2,236,081

Treasury stock issued on
 exercise of employee
 stock options                                -               -           26,863     342,173               -                369,036

Issuance of common stock on
 exercise of employee
 stock options                  73,828          74         625,693          -           -                  -                625,767

Tax benefit related to
 exercise of employee stock
 options                                      -            675,000          -           -                  -                675,000
                            ----------    --------    ------------   -----------   ---------        -----------        ------------
Balance, December 31, 1997  11,148,052    $ 11,148    $ 31,326,683   $   858,342   $    -           $      -           $ 32,196,173
Net loss                                      -               -       (3,742,759)       -                  -             (3,742,759)
Issuance of common stock on
 exercise of employee stock
 options                       368,340         368       2,677,308          -           -                  -              2,677,676
Tax benefit related to
 exercise of employee stock
 options                                      -            688,796          -           -                  -                688,796
Issuance of warrants                          -            330,000          -           -                  -                330,000
                            ----------    --------    ------------   -----------   ---------        -----------        ------------
Balance, December 31, 1998  11,516,392    $ 11,516    $ 35,022,787   $(2,884,417)  $    -           $      -           $ 32,149,886
Net loss                                      -               -       (3,706,691)       -                  -             (3,706,691)

Net unrealized investment
 gain                                         -               -             -           -             2,352,000           2,352,000
 Total comprehensive loss                                                                                                (1,354,691)
Issuance of common stock on
 exercise of employee stock
 option                        468,927         469       5,648,256          -           -                  -              5,648,725
Tax benefit related to
 exercise of employee stock
 options                                      -          1,053,000          -           -                  -              1,053,000
                            ----------    --------    ------------   -----------   ---------        -----------        ------------
Balance, December 31, 1999  11,985,319    $ 11,985    $ 41,724,043   $(6,591,108)  $    -           $ 2,352,000        $ 37,496,920

</TABLE>

The accompanying notes are an integral part of these financial statements.

                                       46
                                     -338-

<PAGE>




Consolidated Statements of Cash Flows
Years ended December 31, 1999, 1998 and 1997
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                       1999                    1998                      1997
- ------------------------------------------------------------------------------------------------------------------------------------

Cash Flows From Operating Activities

<S>                                                                  <C>                     <C>                    <C>
 Net income (loss)                                                   $  (3,706,691)          $  (3,742,759)         $  2,236,081
 Adjustments to reconcile net income (loss) to
  net cash provided by operating activities:
  Depreciation and amortization                                         53,727,233              48,850,622            42,315,305
  Amortization of debt issue costs and discount                             76,642                  38,437               147,880
  Extraordinary loss on early extinguishment of debt                          -                  1,682,880                  -
  Equity in loss of affiliate                                              211,976                    -                     -
  Noncash loss on sale of radar operations                                 630,366                    -                     -
  Deferred income taxes                                                 (2,421,469)             (1,254,753)            1,056,000
 Change in assets and liabilities:
  Accounts receivable                                                      403,404              (1,721,398)           (1,278,437)
  Inventory                                                              2,094,658               1,144,102                  -
  Prepaid expenses                                                         224,565                (851,447)             (180,068)
  Deferred commission expense                                             (148,720)                614,502              (400,469)
  Other assets                                                            (150,950)                   -                     -
  Accounts payable                                                       1,000,360              (3,151,545)              518,361
  Accrued expenses                                                         (98,512)             (2,091,048)           (1,113,749)
  Equipment deposits                                                      (270,744)               (542,752)              (51,175)
  Unearned revenue                                                        (398,182)              3,441,028             4,293,666
                                                                     -------------           -------------          ------------
 Net Cash Provided By Operating Activities                              51,173,936              42,415,869            47,543,395

Cash Flows From Investing Activities
 Capital expenditures:
  Equipment used by subscribers                                        (13,816,323)            (20,341,583)          (21,137,267)
  Other Property and Equipment                                          (9,383,516)             (8,803,636)           (3,367,535)
 Acquisitions                                                          (10,467,165)            (37,621,363)           (5,687,196)
 Proceeds from sale of radar operations                                     64,000                    -                     -
 Note receivable from sale of radar operations                          (1,091,116)                   -                     -
 Investment in affiliate                                                  (500,000)                   -                     -
                                                                     -------------           -------------          ------------
 Net Cash Used By Investing Activities                                 (35,194,120)            (66,766,582)          (30,191,998)

Cash Flows From Financing Activities
 Proceeds:
  Revolving credit line                                                       -                 51,000,000             4,000,000
  Term notes                                                                  -                 16,000,000                  -
  Exercise of stock options                                              5,648,725               2,677,676               994,803
 Payments:
  Term notes                                                           (21,628,541)            (24,810,833)          (22,217,083)
  Debt acquired through acquisitions                                          -                 (5,228,300)                 -
  Subordinated notes and prepayments costs                                    -                (16,125,000)                 -
                                                                     -------------           -------------          ------------
 Net Cash (Used) Provided By Financing Activities                      (15,979,816)             23,513,543           (17,222,280)
                                                                     -------------           -------------          ------------
Net Increase (Decrease) in Cash                                               -                   (837,170)              129,117
Cash at Beginning of Period                                                   -                    837,170               708,053
                                                                     -------------           -------------          ------------
Cash at End of Period                                                $        -              $        -             $    837,170
- ------------------------------------------------------------------------------------------------------------------------------------
Supplemental Cash Flow Information
 Noncash financing activities:
  Note due to affiliate - exchange for equity interest               $   2,500,000           $        -             $       -

</TABLE>

The accompanying notes are an integral part of these financial statements.
                                       47
                                     -339-
<PAGE>

Notes to Consolidated Financial Statements

1.  Summary of Significant Accounting Policies
Principles of Consolidation

     The  consolidated   financial  statements  include  the  accounts  of  Data
Transmission  Network Corporation and its wholly owned subsidiaries (the Company
or DTN).  All  significant  intercompany  accounts  and  transactions  have been
eliminated in consolidation.

Revenue Recognition

     The Company  provides its subscribers  with equipment or access through the
Internet  to receive  information  and  communications  services.  DTN charges a
recurring  subscription fee and in many instances a one-time service  initiation
fee. The  subscriptions are contracted for an initial period of one year and are
generally  billed  quarterly  in  advance.  Payments  received  in  advance  for
subscriptions,  additional  services and advertising are deferred and recognized
as the services are provided to the subscribers.  Equipment sales are recognized
when the equipment is shipped.  Service initiation fees are recognized in income
since these fees are less than the  marketing  and setup costs  related to a new
subscriber. Communication services are generally billed monthly in arrears based
on the number and length of the messages delivered to subscribers.

Inventory

     Inventories  are stated at the lower of cost or market with cost determined
on a first in, first out basis.

Deferred  Commission Expense

     Commissions  and  bonuses  which  are  paid  at the  time  of  the  initial
subscription  to  sales  representatives,  to  company  representatives,  or  to
subscribers for successful  customer  referrals,  are deferred and expensed over
the initial twelve-month subscription period.

Equipment Used By Subscribers

     Equipment  used by  subscribers  to receive  the  Company's  electronically
transmitted  information  and  communication  services  is  stated  at cost less
accumulated  depreciation.  Depreciation is calculated  using the  straight-line
method over a useful  life of three to eight years for assets  placed in service
prior to July 1,  1992,  and  three to six years for  assets  placed in  service
subsequent to July 1, 1992.

Other Property and Equipment

     Other   property  and  equipment  are  stated  at  cost  less   accumulated
depreciation. Depreciation is calculated using the straight-line method over the
estimated useful lives of the respective classes of assets as follows:


Computer Equipment                                   3-5 years
Software                                             2-3 years
Furniture, Fixtures and Other                        3-7 years
Leasehold improvements                               5-10 years
Building                                              40 years



Intangible Assets

     Intangible assets are stated at cost less accumulated  amortization.  These
costs are amortized using the straight-line  method over three to ten years. The
carrying value of fixed and intangible  assets is  periodically  assessed by the
Company by  reviewing  the  recoverability  of the assets over the  amortization
period  based on the  projected  undiscounted  future  cash flows of the related
business  unit.  Cash  flow  projections  are  based  on  trends  of  historical
performance   and   management's   estimate   of  future   performance,   giving
consideration to existing and anticipated competition and economic conditions.

Income Taxes

     Deferred  income taxes are provided for the temporary  differences  between
the  financial  reporting  basis and the tax basis of the  Company's  assets and
liabilities  using  enacted  tax  rates in  effect  for the  year in  which  the
differences are expected to reverse.

Earnings (Loss) Per Share

     Basic earnings per share data are based on the weighted average outstanding
common  shares during the period.  Diluted  earnings per share data are based on
the weighted  average  outstanding  common shares and the effect of all dilutive
potential common shares, including stock options and warrants.

Statement of Cash Flows

     For purposes of the  statement  of cash flows,  the Company  considers  all
highly liquid investments purchased with an original maturity of three months or
less to be cash equivalents.  During the years ended December 31, 1999, 1998 and
1997,  the  Company  made  interest  payments  of  $8,886,000,   $8,367,000  and
$8,983,000, respectively. Capital expenditures for subscriber equipment included
in accounts  payable  totalled  $342,000 and $1,105,000 at December 31, 1998 and
1997, respectively.  The Company paid $934,000 and $136,000 federal income taxes
in 1999 and 1998, respectively and no federal income taxes during 1997.

Research and Development

     Expenditures  for research and  development  are charged to expense as they
are incurred and  approximated  $5,777,000,  $4,423,000,  and $3,059,000 for the
years ended December 31, 1999,  1998, and 1997.

Use of Estimates

     The  preparation  of financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect the  reported  amounts of assets and  liabilities  and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements  and the  reported  amounts  of  revenues  and  expenses  during  the
reporting period. Actual results could differ from these estimates.

Fair Value of  Financial  Instruments

     Because of their maturities and/or interest rates, the Company's  financial
instruments  generally have a fair value  approximating  their  carrying  value.
These  instruments  include  accounts  receivable,   investment  in  securities,

                                       48
                                     -340-
<PAGE>

revolving credit and term borrowings,  subordinated debt,  commercial paper, and
trade  payables.  The Company had $32,425,500 and $49,822,540 of fixed term debt
as of December 31, 1999 and 1998 with an estimated fair value of $32,452,043 and
$50,395,940.  The Company has an investment  in security with an estimated  fair
value of $3,675,000 as of December 31, 1999.

Comprehensive Income

     Unrealized gains and losses on the Company's available-for-sale  securities
are  included  in  other  comprehensive  income  and  separately  included  as a
component of shareholders' equity, net of related deferred taxes.

Accounting  Pronouncements

     In June 1998, the Financial Accounting Standards Board issued Statement No.
133. "Accounting for Derivative  Instruments and Hedging Activities" (SFAS 133),
that would have been  effective  January 1, 2000.  In June 1999,  the  Financial
Accounting Standards Board issued Statement No. 137, "Accounting for Derivatives
Instruments  and  Hedging  Activities-Deferral  of the  Effective  Date  of FASB
Statement No 133",  postponing the effective date for  implementing  SFAS 133 to
fiscal  years  beginning  after  June 15,  2000.  The  Company  will  adopt this
Statement  effective  January 1, 2001.  At this time,  the Company  believes the
impact of adopting this  Statement  should not be  significant to the results of
operations or financial position.

     In December  1999,  the  Securities  and Exchange  Commission  issued Staff
Accounting  Bulletin  (SAB) No. 101 related to revenue  recognition in financial
statements. This SAB will affect the Company's recognition of service initiation
fees to require  these fees to be deferred and  recognized  over the term of the
service  arrangement or the expected period of performance.  The Company has not
completed the process of evaluating the impact of adopting this SAB. The Company
anticipates  adopting  the SAB in the first  quarter  of 2000 with a  cumulative
effect  adjustment as a change in accounting  principles in accordance  with APB
Opinion No. 20, Accounting Changes.

Reclassifications

     Certain reclassifications have been made to 1998 amounts to conform to 1999
presentations.

2. Sale of Radar Operation

     In December of 1999, the Company sold the radar operations of its Kavouras,
Inc. subsidiary.  The assets were sold for $1.3 million and the Company recorded
a pre-tax loss of $4.1 million,  which was included in operating  expenses.  The
breakdown of these expenses were as follows: 1) $3.2 million related to the sale
of the inventory,  fixed assets and  intangibles,  2) an accrual of $1.2 million
for  costs  related  to the  severance  of  approximately  30  radar  operations
employees not retained by Kavouras (of which,  $.3 million was paid in 1999) and
3) the accrual of $.9  million for other  operations  closing  costs.  The radar
operations recorded negative direct operating cash flow (not including allocated
Kavouras  administration  expenses)  for 1999 and 1998 of $1.3  million  and $.8
million on revenues of $1.5 million and $2.5 million, respectively.

3. Non-recurring Costs

Severance Costs

     During the first quarter of 1999, the Company incurred  non-recurring costs
of $735,828  for  severance  payments  to  employees,  primarily  related to the
resignation of the Company's Chairman and CEO.

Satellite Costs

     On May 20,  1998,  nearly all of the  Company's  159,000  subscribers  were
unable to receive  their data due to loss of control of the Galaxy IV  satellite
by  PanAmSat.  This  satellite  was used by the Company to  transmit  service to
nearly all its subscribers.

     The costs  related to the failure of Galaxy IV include  telecommunications,
overtime labor,  satellite costs and customer  communications and these unusual,
non-recurring satellite costs were $5.8 million and recorded in May of 1998.

4. Acquisitions

     The Company has completed  the  acquisitions  described  below and all have
been  accounted  for as a purchase.  Accordingly,  the  purchase  price has been
allocated to the  identifiable net assets acquired based upon estimates of their
fair market  values at the  acquisition  dates and the excess of purchase  price
over the estimated  fair value of total net assets  acquired which was allocated
to goodwill. The consolidated financial statements include the operating results
from the date of acquisition.

Market Quoters, Northern Data and Market Communications Group LLC

     During the first  quarter of 1997,  the Company  acquired  2,900  real-time
commodity  subscribers through two separate  acquisitions.  Approximately 500 of
the subscribers were acquired from Market Quoters and Northern Data Services for
$750,000  cash.  The  remaining  2,400  subscribers  were  acquired  from Market
Communications Group, LLC (MCG), a joint venture between Reuters America,  Inc.,
and Farmland  Industries,  Inc. The Company paid $3.6 million cash for the 2,400
subscribers,  certain  assets and assumed  certain  liabilities.  In total,  the
Company capitalized approximately $4.5 million as an intangible asset (primarily
goodwill) and is amortizing this cost using the straight-line  method over three
to eight years. The MCG acquisition  included the preferred rights to distribute
relevant Reuters  real-time news and information to the commodities,  energy and
metals markets.

The Network, Inc.

     In July of 1997, the Company  acquired the assets of The Network,  Inc., an
electronic cotton trading network service.  The Company agreed to pay $1,000,000
cash over five years.  The Company has the option to terminate  the agreement at
any time and cease all payments and return the assets to the owner.  The Company
paid $200,000 cash in 1997, 1998 and 1999, and will pay $200,000 cash on each of

                                       49
                                     -341-
<PAGE>

the next two  anniversary  dates.  The  Company  is  capitalizing  the  $200,000
payments when made as an intangible  asset  (primarily  goodwill) and amortizing
this cost using the straight-line method over 12 months. To date the Company has
capitalized  a total of  $700,000.  In effect,  if all  payments  are made,  the
Company is amortizing the $1,000,000 purchase price over five years.

Arkansas Farm Bureau ACRES Service

     In October of 1997,  the Company  agreed to acquire the  approximately  700
subscribers  on the ACRES  platform  from the Arkansas  Farm Bureau  (AFB).  The
Company agreed to pay approximately $600 for each subscriber that converted to a
DTN  service.  The  Company  converted  628  subscribers  to a DTN  service.  In
addition,  the Company will pay the AFB a $6 monthly  residual for the lesser of
the life of the  subscriber or ten years for those  subscribers  converting to a
DTN service.  The Company  capitalized  $376,800 as an  intangible  asset and is
amortizing this cost using the straight-line method over eight years.

Market Information of Colorado, Inc.

     In February of 1998,  DTN  acquired  100  subscribers  receiving  real-time
commodities and futures  information from Market  Information of Colorado,  Inc.
(MIC) for $135,000 cash. The Company capitalized $133,205 as an intangible asset
and is amortizing this cost using the straight-line method over eight years.

CDS Group, Inc.

In March of 1998,  DTN acquired CDS Group,  Inc. (CDS) for $250,000 cash and the
assumption of certain  liabilities.  CDS is engaged in the business of marketing
software for tracking  bales of cotton for  businesses  in the cotton  industry.
This acquisition complements the acquisition of The Network, Inc., an electronic
cotton trading network (discussed  above). The Company has capitalized  $337,600
as an  intangible  asset  (goodwill)  and is  amortizing  this  cost  using  the
straight-line method over five years.

SmartServ Online, Inc.

     In April of 1998,  DTN signed an agreement to acquire  exclusive  rights to
market the Internet based financial services  information  products of SmartServ
Online,  Inc.  (SSOL)  based  in  Stamford,  CT  (OTC-BB:SSOL),  their  Internet
information  distribution  technology,  and their  subscribers for $850,000 cash
plus  $1,055,000  for  minimum  payments  for the  first  twelve  months  of the
contract.  These  services  include:  SmartServ  Pro,  now DTN.IQ,  a real-time,
tick-by-tick stock quote and news service, and TradeNet and BrokerNet, real-time
trading  and account  information  services  for the  brokerage  industry.  This
agreement transferred the 850 subscribers using SmartServ Online to DTN. All new
subscribers  to these  services will be DTN customers and DTN will pay SmartServ
Online,  Inc.  an ongoing  royalty  based on  revenues.  The first year  minimum
payments in excess of the  calculated  payments has been  capitalized as part of
the purchase price.

     In January of 1999,  the Company and SSOL signed a Letter of Intent whereby
the  Company  would  merge with  SmartServ  Online,  Inc.  and  shareholders  of
SmartServ Online, Inc. would receive stock of the Company.  The Letter of Intent
had been  signed by the  holders of a  majority  of the stock of SSOL on a fully
diluted basis.

     In May of 1999,  the Company and SSOL agreed to forgo the  proposed  merger
and amend certain terms and provisions of the original  License  Agreement dated
April of 1998. Under the new terms,  DTN agreed to pay additional  consideration
of $5,458,000 to SSOL in return for an exclusive,  perpetual, worldwide license,
to insure a  long-term  business  alliance.  In addition  the  Company  received
warrants to  purchase  300,000  shares of the Common  Stock of  SmartServ  at an
exercise  price of $8.60 per  share.  The  Company  capitalized  the  additional
consideration  as an intangible  asset  (goodwill) and is amortizing the amount,
including  the remaining  unamortized  amount of the  $1,905,000 or  $1,524,000,
using the  straight-line  method  over ten years,  dating  back to the  original
agreement date of April 1, 1998.

National Datamax, Inc.

     In June of 1998,  DTN signed an  agreement  to acquire  100% of the capital
stock  outstanding of National Datamax,  a software  development and information
services firm specializing in integrated  systems for the financial  information
services industry.  DTN has agreed to pay $3,000,000 cash, assume the assets and
liabilities of National Datamax,  Inc., plus pay any earn-out based upon revenue
growth from quarter ending December 31, 1997,  through quarter ending  September
30, 1999.  National Datamax is a wholly owned subsidiary of DTN and operates out
of California.  The Company has  capitalized  $3,543,295 as an intangible  asset
(primarily  goodwill) and is amortizing this cost using the straight-line method
over three to five years.

Kavouras, Inc.

     In July of 1998,  DTN signed an  agreement  to acquire  100% of the capital
stock  outstanding  in Kavouras,  Inc.  Kavouras is engaged in the  development,
design,  manufacture,  marketing  and service of  meteorological  equipment  and
provides  meteorological  data  services  to  government,  aviation,  commercial
broadcast and other industries,  including DTN. The Company agreed to assume the
assets and  liabilities  of  Kavouras,  Inc. and pay  $22,650,000  cash of which
$20,650,000 was paid at closing.  The remaining $2,000,000 cash will be paid out
in equal $400,000  payments over the next five  anniversary  dates of closing to
Steve Kavouras as a non-compete.  Kavouras, Inc. is a wholly owned subsidiary of
DTN and operates out of Minnesota under the name DTN Kavouras Weather  Services.
The  Company has  capitalized  $18,208,749  as an  intangible  asset  (primarily
goodwill) and is amortizing this cost using the  straight-line  method over five
to ten years.

     In a  related  transaction,  in April of 1998,  Kavouras  signed a  License
Agreement with Earthwatch  Communication,  Inc. for the exclusive rights to use,

                                       50
                                     -342-
<PAGE>

market license and sell the Licensed  Products of a U.S. Patent which provides a
"Method  for  Creating  a 3D  Image  of  Terrain  and  Associated  Weather."  In
conjunction with the acquisition  agreement,  an Assignment Agreement was signed
on March 30,  1998,  between  Kavouras and the Company to assign this License to
DTN Market Communications Group, Inc., a wholly owned subsidiary of the Company.
As a result of this assignment, the Company paid $3,000,000 cash for the License
Agreement with Earthwatch Communication,  Inc., which is being capitalized as an
intangible  asset and amortized using the  straight-line  method over ten years.

Paragon Software, Inc.

     In March of 1999, the Company acquired Asset Growth  Corporation  (AGC) and
the option to purchase  Paragon  Software,  Inc. (PSI).  AGC, a holding company,
held an option to purchase PSI. In order to acquire PSI, DTN purchased  both AGC
and PSI. The Company agreed to pay $9,500,000 cash. Approximately $5,300,000 was
paid in October 1998 and the remainder  was paid in March 1999.  The Company has
capitalized  $10,408,510  as an  intangible  asset  (primarily  goodwill) and is
amortizing this cost using the straight-line method over three to five years.

Weather  Services  Corporation

     In  December  of 1998,  the  Company  acquired  100% of the  capital  stock
outstanding in Weather Services  Corporation (WSC). WSC provides  meteorological
consulting and worldwide commercial weather information to Internet,  newspaper,
utilities,  broadcasters,  agribusinesses and municipalities. The Company agreed
to pay $3,807,700 cash to acquire the stock and assume certain  liabilities plus
a warrant to purchase 20,000 shares of DTN's common stock at $34.00. The Company
has capitalized  $3,806,533 as an intangible  asset (goodwill) and is amortizing
this cost using the  straight-line  method over ten years. The fair value of the
warrant is included in shareholder's equity.

Waterman Associates

     In January of 1999, DTN acquired Waterman Associates, a business engaged in
creating, assembling,  marketing and distributing information in the natural gas
and  electric  energy  industries.  This  information  is made  available to DTN
subscribers as part of the DTN Natural Gas and Electric  services.  DTN acquired
Waterman  Associates for $350,000 cash. The Company has capitalized  $397,000 as
an  intangible   asset   (goodwill)  and  is  amortizing  this  cost  using  the
straight-line method over five years.

FlightBrief Online Service, Inc.

     In October 1999,  DTN acquired the assets of  FlightBrief  Online  Service,
Inc., an Internet weather service for the aviation  industry.  DTN agreed to pay
$108 per converted customer, up to $367,500. At closing, $92,000 was paid to the
seller and $262,500 was paid into an escrow account to be settled 100 days after
the closing  date based on the number of  converted  customers.  The Company has
capitalized  $354,500 as an intangible  asset  (goodwill) and is amortizing this
cost using the straight-line method over five years.

Pro Forma Financial Information

     All of the  acquisitions  have been accounted for using the purchase method
of accounting.  With the exception of National Datamax,  Kavouras,  PSI and WSC,
the  acquisitions  in 1998 were primarily  acquisitions  of subscribers  and not
entire  businesses.  The  following  unaudited pro forma  financial  information
reflects the  consolidated  results of  operations of the Company for the fiscal
years ended December 31, 1998 as though the Kavouras,  National  Datamax and WSC
acquisitions,  had  occurred  at the  beginning  of the  period  presented.  The
remaining  1998  acquisitions  were deemed not material in nature to the overall
operating  statements  of the  Company,  thus are  excluded  from the pro  forma
information  disclosure.   This  proforma  information  has  been  prepared  for
comparative  purposes only and does not necessarily  represent  actual operating
results  that may be achieved in the future or that would have  occurred had the
acquisition been consummated on January 1, 1998.  Proforma  information for 1999
would not have been  significantly  different  from the  historical  results  of
operations.


Pro Forma December 31,                                  1998
- --------------------------------------------------------------------------------

Revenues                                            $161,544,338
Loss before extraordinary item                      $ (5,684,895)
Loss per share before extraordinary item
         Basic                                      $      (0.50)
         Diluted                                    $      (0.50)


5. Investments In Securities

     As part of the SmartServ Online, Inc. amended license agreement,  dated May
of 1999, the Company received  warrants to purchase 300,000 shares of the Common
Stock of  SmartServ  at an exercise  price of $8.60 per share.  At December  31,
1999, the Common Stock of SmartServ was trading at $19.72.  The Company recorded
the  estimated  fair  value  of  the  warrants  as a  current  investment  in an
available-for-sale  security of $3,675,000 and also recorded other comprehensive
income for the  unrealized  gain of  $2,352,000,  net of  $1,323,000 in deferred
income  taxes.  Other  comprehensive  income has no impact to the  Company's net
loss, but is included as part of shareholders' equity.

6.  Inventories

     Inventories are primarily related to the equipment sales as a result of the
acquisition of Kavouras. The major classes of inventory are as follows:


December 31                       1999                     1998
- --------------------------------------------------------------------------------

Raw Materials                   $   914,339              $ 2,684,857
Work-in-Process                      39,818                  728,415
Finished Goods                      526,765                  162,308
                                $ 1,480,922              $ 3,575,580


                                       51
                                     -343-
<PAGE>

7. Investment in Affiliate

     In December of 1999, the Company and Photon Research Associates, Inc. (PRA)
formed a joint venture company,  EarthScan Network,  Inc. (EarthScan) to provide
remote sensing images of cropland and other tools for the agricultural industry.
DTN owns approximately 47% of the EarthScan stock and has a 50% voting interest.
The Company  accounts for EarthScan  under the equity method because the Company
has the  ability  to  exercise  significant  influence  over its  operating  and
financial  policies.  The equity in loss of EarthScan  was $211,976 for the year
ended December 31, 1999.

8. Other Property and Equipment

     Other property and equipment are stated at cost.  The  respective  costs of
the classes of assets are as follows:



December 31,                                    1999                  1998
- --------------------------------------------------------------------------------

Computer Equipment                          $  21,968,903        $  17,520,801
Software                                       10,509,485            7,149,835
Furniture, Fixtures and Other                   8,885,232            8,527,904
Leasehold improvements                          3,016,340            2,909,196
Building                                        2,481,967            2,460,486
Land                                              220,269              220,269
- --------------------------------------------------------------------------------
  Total                                     $  47,082,196        $  38,788,491

9. Long Term Debt And Loan Agreements

     The Company has a revolving credit agreement,  as amended,  with a group of
banks (the "Revolving Credit Agreement").  The Revolving Credit Agreement, which
expires June 30, 2001 unless extended,  provides for a total commitment of up to
$122,900,000  in new  borrowings.  As of December 31, 1999,  $55,500,000  of the
total commitment had been borrowed,  with the remaining $67,400,000 available to
the Company subject to certain restrictions as discussed below.


December 31,                               1999                      1998
- --------------------------------------------------------------------------------
Revolving Credit Agreement

    Revolving credit line               $ 55,500,000              $ 55,500,000
    Term notes                            20,875,000                34,421,875
Term Credit Agreement
    Term notes                            24,244,999                32,326,665
Note Due to Affiliate                      2,500,000                      -
- --------------------------------------------------------------------------------
Total Loan Agreements                    103,119,999               122,248,540
- --------------------------------------------------------------------------------
Less current portion                      24,081,667                21,628,542
- --------------------------------------------------------------------------------
Total Long-Term Debt                    $ 79,038,332              $100,619,998


     Additional borrowings under the Revolving Credit Agreement are available to
the Company,  as long as at the time of the advance,  no default exists with any
of the Company loan agreements and the ratio of the Company's  total  borrowings
to operating cash flow ("the Leverage Ratio") does not exceed thirty-six.  As of
December 31, 1999 based on current  operating  cash flow,  the Company  would be
able to borrow $25,600,000 of the remaining $67,400,000 commitment available.

     In addition to the  restrictions  mentioned above with respect to advances,
total debt  outstanding is limited to forty-eight  times monthly  operating cash
flow. The Company is required to maintain total stockholders' equity of at least
$23,500,000  plus fifty  percent  (50%) of net income (but not losses) at fiscal
year end through June 30, 2001. The minimum  stockholders' equity required to be
maintained is  $24,618,040  as of December 31, 1999.  The Company is required to
maintain  a ratio of  quarterly  operating  cash flow to  interest  expense  (as
defined) of at least 2.25 to 1. The Company is permitted  to pay cash  dividends
in any one year, which are, in the aggregate, less than 25% of the Company's net
operating profit after taxes in the previous four quarters.

     Interest on the outstanding  borrowings (prior to when the borrowings might
be converted to term loans, as discussed below) is at a variable rate, depending
on the ratio of the  Company's  total  borrowings  to  operating  cash flow (the
"Leverage  Ratio").  The  following  table  outlines the "Leverage  Ratio",  the
applicable Margin, Unused Commitment Fees and Fixed Note Margin discussed below.

<TABLE>
<CAPTION>                                                 Unused             Fixed
                                                        Commitment            Note
Leverage Ratio                           Margin             Fee              Margin
- ------------------------------------------------------------------------------------------------
<S>                                       <C>              <C>               <C>
greater than 42                           .250%            .375%             2.25%
greater than 36 and less than =42         .500%            .250%             2.25%
greater than 30 and less than =36         .750%            .250%             2.00%
greater than 24 and less than =30        1.000%            .250%             2.00%
greater than 18 and less than =24        1.250%            .125%             1.75%
less than                     =18        1.375%            .125%             1.75%

</TABLE>


     The Revolving  Credit Rate is the First National Bank of Omaha's  "National
Base Rate", minus the applicable Margin. The base rate is adjusted monthly, with
the  interest  rate margin  changed  quarterly.  As of December  31,  1999,  the
Revolving Credit Rate is 7.25%.

     The Company  pays a commitment  fee of 1/8 - 3/8% on the unused  portion of
the total  revolving  credit  commitment  based on the "Leverage  Ratio".  As of
December 31, 1999 the  commitment  fee was 1/4% on all unused  revolving  credit
commitment.  In the event the total  borrowings  exceed 36 times  Operating Cash
Flow,  any term  note  accruing  interest  at less than  7.5% is  included  in a
"Trigger Event".  The Company is obligated to pay the holders of such term notes
a fee of 0.375% of the  outstanding  balance of the notes upon the occurrence of
the Trigger Event and like amounts on the six month  anniversary  and the twelve
month anniversary of the Trigger Event.

     The  Company  has the option to convert the  outstanding  revolving  credit
borrowings to term loans at any time,  payable in  forty-eight  fixed  principal
installments,  plus  interest.  Interest on the  converted  term loans is at the
Company's  option,  a variable  interest rate of 1/4% over the Revolving  Credit
Rate or at a fixed rate of 3/8% over the Revolving  Credit Rate in effect on the
date of the notice (as defined) or the  applicable  Fixed Note Margin  (based on
the  "Leverage  Ratio")  over  the  average  of the 3 and 5 year U. S.  treasury
securities,  as quoted in the prior month "Federal Reserve Statistical Release",
whichever is greater.  Through a refinancing of Senior Subordinated Notes, as of

                                       52
                                     -344-
<PAGE>

March 17, 1998, the Company  converted  $16,000,000 of revolving  credit to term
notes  accruing  interest at the rate of 7.50% (see footnote 10). As of December
31, 1999, $55,500,000 of the total borrowings outstanding had not been converted
to  term  loans.  As of  December  31,  1999,  $20,875,000  of term  loans  were
outstanding with monthly  installments due up through 2002 having interest rates
ranging  from 7.50% to 7.865%.

     The Company has a Term Credit Agreement with a group of banks providing for
an aggregate  principal amount of $48,490,000 to be repaid in 72 fixed principal
installments which began January 31, 1997. As of December 31,1999, the principal
balance was $24,244,999 with $12,694,499 accruing at a variable interest rate of
the NY prime  rate less  one-half  of one  percent,  or 8.00% and the  remaining
$11,550,500 accruing at a fixed interest rate of 7.75%.

     In December of 1999, the Company and Photon Research Associates, Inc. (PRA)
formed a joint venture company, EarthScan Network, Inc. (EarthScan).  As part of
this new company,  DTN  contributed  $3,000,000  to  EarthScan,  which  included
$500,000  cash and a $2,500,000  note.  This note  agreement  calls for periodic
payments  to  EarthScan  upon ten days  written  demand.  Interest on the unpaid
balance is at a variable rate equal to DTN's revolving  credit rate currently in
effect, minus two percent.  This note is classified as current long-term debt as
the Company expects to payoff the note during the next twelve months.


Minimum Principal Maturities of Long-Term Debt*
- --------------------------------------------------------------------------------
Year Ending December 31,

2000                                         $ 24,081,667
2001                                           14,456,667
2002                                            9,081,665
- --------------------------------------------------------------------------------
Total                                        $ 47,619,999
* Excluding revolving credit line.



     The  revolving  credit lines are  classified  as  long-term  debt since the
Company has the ability and the intent to maintain these  obligations for longer
than one year.

     Substantially  all of the Company's  assets are pledged as collateral under
the Company's long-term debt and loan agreements.


10.  Extraordinary item

     On March 17, 1998,  the Company  refinanced its Senior  Subordinated  Notes
with 7.50% term notes with fixed principal  payments plus interest.  The Company
recorded an extraordinary loss for the pre-payment penalty of $1,125,000 or 7.5%
of the principal balance of $15,000,000 to retire the Subordinated  Notes early.
In addition,  $557,880 of debt issuance and discount costs related to the senior
subordinated  notes were also  recorded  as an  extraordinary  loss in the first
quarter  of  1998.  The  extraordinary  loss was  reduced  by a tax  benefit  of
$606,000.

11.  Income  Taxes  Components  of the income  tax  (benefit)  provision  are as
follows:

                           1999                1998                  1997
- --------------------------------------------------------------------------------

Current                 $  1,323,000        $   156,000            $   115,000
Deferred                  (2,421,469)        (1,558,684)             1,056,000
- --------------------------------------------------------------------------------
                        $ (1,098,469)       $(1,402,684)           $ 1,171,000


     The income tax (benefit)  provision differs from the (benefit) provision at
federal statutory rates for the following reasons:

                           1999                1998                  1997
- --------------------------------------------------------------------------------
Federal                 $(1,634,469)        $(1,383,313)           $ 1,158,000
State Taxes                 (96,000)            (81,371)                68,000
Other                       632,000              62,000                (55,000)
- --------------------------------------------------------------------------------
                        $(1,098,469)        $(1,402,684)           $ 1,171,000


     The  components  of deferred  tax  liability  (asset) are as follows and is
included in other assets on the balance sheet.


                                               1999                  1998
- --------------------------------------------------------------------------------
Deferred Tax Assets


  Net operating loss carryforwards            $ 5,415,000          $ 8,630,000
  AMT and R&D credits                           2,022,000              860,000
  Allowance for doubtful accounts                 648,000              468,000
  Accruals and other                            1,388,000              771,000
  Total deferred tax assets                     9,473,000           10,729,000

Deferred Tax Liabilities

  Unrealized gain on investment securities    $(1,323,000)         $      -
  Depreciation                                   (991,000)          (4,910,000)
  Intangible assets                              (163,000)            (828,000)
  Other                                           (74,000)            (220,000)
  Total deferred tax liabilities               (2,551,000)          (5,958,000)

Net Deferred Tax Assets                       $ 6,922,000          $ 4,771,000


     The Company had  approximately  $15,042,000  of unused net  operating  loss
(NOL)  carryforwards at December 31, 1999. The NOL carryforwards  will expire in
the years 2010 to 2018.

12. Capital Stock

     The Company's  articles of incorporation  provide for the  authorization of
1,000,000  shares of $.50 par value per share  preferred  stock.  The  preferred
stock,  none of which has been issued,  presently  has no voting rights or other
features,  although the articles of  incorporation  contain  provisions to adopt
various features or privileges at the discretion of the Board of Directors.

     In  September  1992,  the  Company's  Board  of  Directors  authorized  the
repurchase of up to 350,000  shares of the Company's  outstanding  common stock.
The purchases are to be made from time to time in the open market or in arranged
transactions at such price or prices as company officers may deem advisable. The
Company has purchased 150,000 shares of outstanding common stock since September

                                       53
                                     -345-
<PAGE>

1992.  The  common  stock  repurchased  may be used to  provide  shares  for the
Company's existing stock options and warrants outstanding.

     In June 1994, pursuant to the sale of subordinated debt, the Company issued
a warrant to purchase  75,000 shares of the Company's  common stock at $7.39 per
share on or before June 30,  2004.  During 1999,  the warrant to purchase  these
75,000 shares was exercised.

     In August of 1997,  the  Company  adopted a  shareholder  rights  plan with
respect  to its  Common  Stock,  under  which  the  Board  declared  a  dividend
distribution of one preferred  shares purchase right to holders of each share of
Common Stock.  The rights are not  exercisable  until ten days after a person or
group announces the acquisition of 11% or more of the Company's  voting stock or
announces a tender  offer for 11% or more of the  Company's  outstanding  common
stock.  Each right entitles the holder to purchase  common stock at one half the
stock's market value. The rights are redeemable at the Company's option for $.01
per  Right  at any time on or prior to  public  announcement  that a person  has
acquired 11% or more of the Company's voting stock. The rights are automatically
attached to and trade with each share of Common Stock.

     In March of 1999, the Board of Directors amended the plan for the rights to
expire on March 24, 1999, therefore the rights became unexercisable.

     In  December  of  1998,  pursuant  to  the  purchase  of  Weather  Services
Corporation,  the  Company  issued a warrant to  purchase  20,000  shares of the
Company's  common stock at $34.00 per share on or before  December 11, 2005.  At
December 31, 1999 the warrant to purchase 20,000 shares had not been exercised.

13. Benefit Plans

     The Company have defined  contribution  plans under  provisions of Internal
Revenue Code Section 401(k). All employees with at least one year of service may
participate in the plans. The Company matches the employee's  contribution up to
4% of  the  employee's  compensation,  and  may  make  additional  discretionary
contributions.  During 1999, 1998 and 1997, the Company contributed  $1,313,000,
$1,029,000 and $848,000, respectively, to the plans as matching contributions.

14. Leases

     The Company leases the right to subsidiary channel  authorizations  from FM
radio  stations and  satellite  network  transmission  capacity to broadcast the
Company's information service to its subscribers. These leases are accounted for
as operating  leases and are for varying periods of one to ten years and contain
annual renewal options for periods of up to five years.

     The Company also has various  operating leases for office space,  warehouse
facilities and equipment.  These leases expire on various dates through 2010 and
generally  provide for renewal  options at the end of the lease.  The Company is
generally obligated to pay the cost of property taxes, insurance,  utilities and
maintenance   on  the  leases.

     Future minimum lease payments under all non-cancelable  operating leases at
December 31, 1999 are as follows:

Year Ending December 31

- --------------------------------------------------------------------------------

2000                                                 $ 5,700,752
2001                                                   4,961,261
2002                                                   3,457,704
2003                                                   2,495,318
2004                                                   2,052,491
2005 and after                                        12,375,609
- --------------------------------------------------------------------------------
Total future minimum lease payments                  $31,043,135


     Total rent expense on all operating  leases was $6,610,000,  $5,920,000 and
$4,842,000 for the years ended December 31, 1999, 1998 and 1997, respectively.

15. Stock-Based Compensation

     The Company has employee and non-employee  director stock option plans with
aggregate  limits of 2,800,000  shares for the employee plan and 210,000  shares
for the  non-employee  director plan. The exercise price of the stock options is
equal to the market  value of the  Company's  common stock on the date of grant.
The  options  are  exercisable  for a period of up to ten years from the date of
grant and generally vest equally over a period of one to five years.

     At December  31,  1999,  shares of the  Company's  authorized  but unissued
common stock were reserved for issuance as follows:


                                                                     Shares
- --------------------------------------------------------------------------------

Employee stock option plans                                         219,287
Non-employee director plan                                           65,503
- --------------------------------------------------------------------------------
Total                                                               284,790


     The  Company  accounts  for its  stock-based  compensation  plans under the
provisions of APB 25. Accordingly,  no compensation cost has been recognized for
its fixed stock  option  plans.  The  effects on 1999,  1998 and 1997 net income
(loss) and income (loss) per share of accounting  for  stock-based  compensation
based on the fair value method at the grant dates  consistent with the method of
FASB Statement 123,  Accounting for Stock-Based  Compensation,  are shown in the
pro forma information below:

<TABLE>
<CAPTION>
Pro Forma                             1999                1998                  1997
- -------------------------------------------------------------------------------------------
Net Income (Loss)
<S>                                 <C>                 <C>                  <C>
    As Reported                     $ (3,706,691)       $ (3,742,759)        $ 2,236,081
    Proforma                        $ (6,746,353)       $ (5,427,339)        $   920,827

Diluted Income (Loss) per share
    As Reported                     $      (0.32)       $      (0.33)        $      0.19
    Proforma                        $      (0.57)       $      (0.48)        $      0.08
- -------------------------------------------------------------------------------------------
Fair Value Per Share                $      12.84        $      15.70         $     11.56

</TABLE>
                                       54
                                     -346-
<PAGE>

     The fair value for  options  granted  under the above  mentioned  plans was
estimated at the date of grant using the Black-Scholes option-pricing model with
the following assumptions:

                                           1999           1998            1997
- --------------------------------------------------------------------------------

Risk-free interest rate                    6.5 %          5.5 %           5.5 %
Dividend yield                             0.0 %          0.0 %           0.0 %
Expected volatility                       52.0 %         53.0 %          51.0 %
Expected life (years)                     5.36           4.95            5.60





The following  table summarizes the stock options as of December 31, 1999, 1998,
1997:
<TABLE>
<CAPTION>
                                              1999                               1998                               1997
                                     --------------------------       --------------------------        ----------------------------
                                               Weighted-Average                 Weighted-Average                   Weighted-Average
                                     Shares     Exercise Price        Shares     Exercise Price         Shares      Exercise Price
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>                  <C>         <C>                   <C>          <C>
Outstanding at beginning of year    1,384,377   $      14.53         1,546,432   $     10.55           1,520,810    $    9.04
Granted                               633,135   $      23.58           253,458   $     29.87             207,350    $   21.60
Exercised                            (393,927)  $      12.94          (368,992)  $      7.25            (119,644)   $    8.33
Cancelled                            (118,696)  $      28.73           (46,521)  $     22.59             (62,084)   $   14.23
                                    ------------------------------------------------------------------------------------------------
Outstanding at end of year          1,504,889   $      17.67         1,384,377   $     14.57           1,546,432    $   10.55
                                    ------------------------------------------------------------------------------------------------
Exercisable at end of year            763,755   $      11.52           895,230   $      9.48             968,834    $    7.25

The following table summarizes the stock options  outstanding as of December 31,
1999:
</TABLE>


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
                                            Options Outstanding                            Options Exercisable
                          -----------------------------------------------------     --------------------------------
                             Shares       Weighted-Average     Weighted-Average       Shares        Weighted-Average
                          Outstanding      Remaining Life       Exercise Price      Exercisable      Exercise Price
- --------------------------------------------------------------------------------------------------------------------
<S>     <C>                 <C>              <C>                 <C>                  <C>               <C>
$ 0.00 -$15.50              588,278          3.8 years           $    7.66            588,278           $   7.66
$15.67 -$27.50              588,855          8.3 years           $   21.33            159,456           $  22.88
$28.00 -$41.75              327,756          9.0 years           $   29.07             16,021           $  39.91
- --------------------------------------------------------------------------------------------------------------------
$ 0.00 -$41.75            1,504,889          6.7 years           $   17.67            763,755           $  11.52
</TABLE>


16.      Earnings Per Share

     The following table shows the amounts used in computing  earnings per share
and the effect on the weighted  average  number of shares of dilutive  potential
common stock. The dilutive  potential common shares outstanding were 552,018 and
878,837 for 1999 and 1998,  respectively,  and were not  included  in  computing
diluted earnings per share because their effects were antidilutive.

<TABLE>
<CAPTION>
                                               1999                                1998                           1997
                               -----------------------------------  ---------------------------------  -----------------------------
                                                         Per-Share                          Per-Share                      Per-Share
                                  Income      Shares      Amount      Income      Shares      Amount   Income      Shares    Amount
- ------------------------------------------------------------------------------------------------------------------------------------
Basic EPS
<S>                            <C>           <C>         <C>        <C>          <C>         <C>      <C>         <C>          <C>
  Net Income (Loss)            $(3,706,691)  11,734,190  $(0.32)    $(3,742,759) 11,358,934  $(0.33)  $2,236,081  11,100,684   $0.20
Effect of Dilutive Securities
  Stock Options and Warrants          -            -          -            -           -          -         -        981,872       -
- ------------------------------------------------------------------------------------------------------------------------------------
Diluted EPS                    $(3,706,691)  11,734,190  $(0.32)    $(3,742,759) 11,358,934  $(0.33)  $2,236,081  12,082,556   $0.19

</TABLE>

                                       55
                                     -347-
<PAGE>

17.      Industry Segment Data

     The Company  operates in four principal  industry  segments - Agricultural,
Weather,   Financial   and   Energy.   All   segments   provide   comprehensive,
time-sensitive  information  and  communication  services  for their  respective
industries.

     The  Agricultural  segment  (DTN  Ag  Services)  provides  information  and
services,  including:  agricultural  market  information,  delayed and real time
futures and options quotes and  comprehensive  news and weather for a variety of
agribusiness industries;  equipment locator and inventory management service for
the farm implement dealer; weather, pricing, news and transportation information
for the produce  industry;  and an  electronic  marketing  system for the cotton
industry.

     The Weather segment (DTN Weather Services) provides a comprehensive weather
information  system to meet the  weather  information  needs of many  industries
including: aviation, broadcast, construction,  forestry, marine, transportation,
turf-related operations,  emergency management and any other business relying on
weather information to help carry out its operations.

     The  Financial  segment (DTN  Financial  Services)  provides  comprehensive
information and services  including;  real-time quotes,  news, charts and alerts
for professional  investors delivered via proprietary  hardware,  PC or over the
Internet;  delayed  quotes,  business news and economic data for the  individual
investor;  wholesale  mortgage rates and prices for the mortgage  industry;  and
software and data services to financial planners and independent brokers.

     The Energy segment (DTN Energy Services)  provides pricing  information and
communications  services  including,  delayed  futures and  options  quotes plus
selected financial information for the refined fuels industry,  thus linking the
refiners  with their  customers  and  real-time  or delayed  options and futures
quotes, weather, news and information for the gas and electricity industries.

     The Other segment  (Other  Services) is general  corporate  activities  not
attributable  to a specific  industry  segment and other  industry  services not
material in nature and eliminations of inter-segment activity.

     Management  primarily  evaluates  performance  of  each  segment  based  on
operating cash flow (operating  income before  depreciation  and  amortization),
EBITDA.   The  Company  does  not  allocate   income  taxes  and  infrequent  or
extraordinary items to the individual industry segments.  Inter-segment revenues
have  been  recorded  at  amounts  approximating  market.  The  following  table
summarizes  additional  information  regarding the Company's individual industry
segments:

<TABLE>
<CAPTION>
                                    1999                1998                 1997
- ----------------------------------------------------------------------------------------
External revenues

<S>                            <C>                   <C>                  <C>
   DTN Ag Services             $ 85,050,566          $ 88,313,568         $ 87,574,829
   DTN Weather Services          38,509,656            25,760,861           10,665,701
   DTN Financial Services        19,364,093            13,350,361           10,316,370
   DTN Energy Services           18,741,278            16,108,597           14,344,714
   Other Services                 4,843,009             5,452,959            3,472,738
- ----------------------------------------------------------------------------------------
Total                          $166,508,602          $148,986,346         $126,374,352
- ----------------------------------------------------------------------------------------
Inter-segment revenues
   DTN Ag Services             $       -             $       -            $       -
   DTN Weather Services           2,361,003             1,038,231                 -
   DTN Financial Services            41,603                24,611                 -
   DTN Energy Services                 -                     -                    -
   Other Services                      -                     -                    -
- ----------------------------------------------------------------------------------------
                                  2,402,606             1,062,842                 -
   Inter-segment Elimination     (2,402,606)           (1,062,842)                -
- ----------------------------------------------------------------------------------------
Total                          $       -             $       -            $       -
- ----------------------------------------------------------------------------------------
Operating Income
   DTN Ag Services             $ 13,869,768          $ 16,797,670         $ 18,773,860
   DTN Weather Services          (4,756,251)           (2,649,423)          (2,174,723)
   DTN Financial Services        (5,237,561)           (3,559,403)          (2,701,058)
   DTN Energy Services            7,006,227             6,282,467            5,720,451
   Other Services                (6,725,430)1         (12,708,135)2         (7,235,127)
- ----------------------------------------------------------------------------------------
Total                          $  4,156,753          $  4,163,176         $ 12,383,403
- ----------------------------------------------------------------------------------------
Depreciation and Amortization
   DTN Ag Services             $ 32,475,285          $ 33,176,299         $ 31,989,604
   DTN Weather Services          10,313,620             6,839,166            3,575,805
   DTN Financial Services         6,639,959             4,226,327            3,196,835
   DTN Energy Services            1,509,260             2,003,109            2,124,352
   Other Services                 2,789,109             2,605,721            1,428,709
- ----------------------------------------------------------------------------------------
Total                          $ 53,727,233          $ 48,850,622         $ 42,315,305
- ----------------------------------------------------------------------------------------
Interest Expense
   DTN Ag Services             $  3,369,757          $  5,813,030         $  7,554,514
   DTN Weather Services           3,550,777             1,812,353              694,197
   DTN Financial Services         1,108,229               454,981              442,381
   DTN Energy Services              165,098               158,535              184,024
   Other Services                   626,615               210,769              223,115
- ----------------------------------------------------------------------------------------
Total                          $  8,820,476          $  8,449,668         $  9,098,231
- ----------------------------------------------------------------------------------------
Operating Cash Flow (EBITDA)
   DTN Ag Services             $ 46,345,053          $ 49,973,969         $ 50,763,464
   DTN Weather Services           5,557,369             4,189,743            1,401,082
   DTN Financial Services         1,402,398               666,924              495,777
   DTN Energy Services            8,515,487             8,285,576            7,844,803
   Other Services                (3,936,321)1         (10,102,414)2         (5,806,418)
- ----------------------------------------------------------------------------------------
Total                          $ 57,883,986          $ 53,013,798         $ 54,698,708
- ----------------------------------------------------------------------------------------

</TABLE>
[FN]

1    Includes $.7 million for non-recurring  severance costs and $4.1 million on
     loss of sale of radar operations.
2    Includes  $5.8 million for  non-recurring  satellite  costs  related to the
     Galaxy IV outage.

</FN>

18.      Subsequent Event

     On March 3, 2000,  the Company  entered  into a definitive  agreement  with
Veronis,  Suhler &  Associates  Communications  Partners  III,  L.P.  (VS&A III)
whereby VS&A III will make a tender offer to all of the  Company's  shareholders
at a price of $29.00 per share.  The tender offer is subject to the tender of at
least 90% of the outstanding shares as of March 1, 2000. If less than 90% of the
outstanding  shares are  tendered,  the Company  will merge with an affiliate of
VS&A III at the same per share price.  Closing of the  transaction is subject to
government and  shareholder  approvals and other  customary  conditions,  and is
expected to occur during the second quarter of 2000.

                                       56
                                     -348-
<PAGE>

Quarterly Financial Data (Unaudited)
Years ended December 31, 1999 and 1998
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------------------
Quarter                                         First            Second            Third             Fourth              Total
- ------------------------------------------------------------------------------------------------------------------------------------
Fiscal 1999
<S>                                         <C>               <C>               <C>               <C>               <C>
Revenues                                    $ 41,684,017      $ 41,152,494      $ 41,509,078      $ 42,163,013      $ 166,508,602
Operating Income (Loss)                     $  1,277,603 4    $  2,281,912      $  2,212,134      $ (1,614,896) 5   $   4,156,753
Net Loss                                    $   (769,458)4    $   (202,532)     $   (193,139)     $ (2,541,562) 6   $  (3,706,691)

Basic Loss Per Share                        $       (.07)     $       (.02)     $       (.02)     $      (0.21)     $       (0.32)
Diluted Loss Per Share                      $       (.07)     $       (.02)     $       (.02)     $      (0.21)     $       (0.32)

Operating Cash Flow1                        $ 14,577,356 4    $ 15,722,212      $ 15,672,486      $ 11,911,932 5    $  57,883,986
Free Cash Flow2                             $  6,156,145 4    $  7,982,155      $  5,960,391      $  5,764,980 5    $  25,863,671
Total Subscribers                                163,900           165,100           165,400           166,900            166,900
- ------------------------------------------------------------------------------------------------------------------------------------
Fiscal 1998
Revenues                                    $ 34,425,147      $ 34,797,482      $ 39,733,540      $ 40,030,177      $ 148,986,346
Operating Income                            $  3,701,311      $ (3,030,844)     $  2,124,238      $  1,368,471      $   4,163,176
Income (Loss) Before Extraordinary Item     $  1,087,406      $ (3,076,542)     $      9,987      $   (686,730)     $  (2,665,879)
Net Income (Loss)                           $     10,526 7    $ (3,076,542) 8   $      9,987      $   (686,730)     $  (3,742,759)

Basic Income (Loss) Per Share3
  Income (Loss) before extraordinary item   $       0.10      $      (0.27)     $       -    9    $      (0.06)     $       (0.24)
  Net Income (Loss)                         $       -    9    $      (0.27)     $       -    9    $      (0.06)     $       (0.33)
Diluted Income (Loss) Per Share3
  Income (Loss) before extraordinary item   $       0.10      $      (0.27)     $       -    9    $      (0.06)     $       (0.24)
  Net Income (Loss)                         $       -    9    $      (0.27)     $       -    9    $      (0.06)     $       (0.33)

Operating Cash Flow1                        $ 14,784,727      $ 8,581,3387      $ 15,028,263      $ 14,619,470      $  53,013,798
Free Cash Flow2                             $  6,686,972      $ (2,755,689)     $  4,731,786      $  6,755,842      $  15,418,911
Total Subscribers                                160,400           160,100           158,400           159,300            159,300

</TABLE>

[FN]

1    Operating income before depreciation and amortization expense.
2    Operating cash flow less property and equipment  capital  expenditures  and
     interest.
3    Net  income  per share for each of the four  quarters  may not agree to net
     income per share for the year due to rounding.
4    Includes $735,828 on a pre-tax basis and $470,930 on an after tax basis for
     non-recurring severance costs.
5    Includes  $4,121,319  on  a  pre-tax  basis  for  loss  on  Sale  of  Radar
     Operations.
6    Includes  $4,121,319  and $211,976 on a pre-tax  basis and  $2,637,644  and
     $135,665  on an after  tax  basis  for loss on sale of radar  business  and
     equity in loss of affiliate.
7    Includes  an  Extraordinary  item,  net of tax  $1,076,880  for  the  early
     extinguishment of $15,000,000 11.25% Senior Subordinated Notes due December
     2004.
8    Includes $5,800,000 on a pre-tax basis and $3,716,000 on an after tax basis
     for non-recurring costs related to Galaxy IV outage.
9    Less than one cent per share.

</FN>


Trading Information
- --------------------------------------------------------------------------------
                              Market Price 1999            Market Price 1998
                           -----------------------      -----------------------
Quarter Ended              High     Low       Last      High     Low      Last

  March 31                33 1/4   16 1/8   23 7/8     38 1/2   26 1/4   34 1/2
  June 30                 28 3/8   20       28 1/8     46       34 3/4   40
  September 30            28 5/16  23 9/16  24 15/16   40 1/2   24       30
  December 31             26 3/4   16 1/2   17 1/4     35       22 1/4   28 7/8

     The  Company's  common  stock  trades on the Nasdaq  Stock Market under the
symbol: DTLN. On December 31, 1999, there were approximately 500 stockholders of
record,  not including  beneficial  holders whose shares are held in names other
than their own.



                                       57
                                     -349-
<PAGE>

Board of Directors

Peter H. Kamin                                     Joseph F. Mazzella
President, Non-Executive Chairman of the Board     Partner
Peak Management, Inc.                              Law Firm of Lane Altman
                                                     & Owens LLC
                                                   Director
Jay H. Golding                                     Alliant Techsystem, Inc.
Chairman and Chief Executive Officer               Insurance Auto Auctions, Inc.
American International Partners, LLC
Director                                           Greg T. Sloma
Bogan Aerotech                                     President
                                                   Chief Operating Officer
Anthony S. Jacobs                                  Data Transmission Network
Private Investor                                   Corp.

David K. Karnes                                    Roger W. Wallace
President                                          Senior Vice President
Chief Executive Officer                            President, Ag Services Div.
The Fairmont Group Inc.                            Data Transmission Network
Of Counsel, Kutak Rock law firm                    Corp.




Corporate Officers

Greg T. Sloma                                   William R. Davison
President                                       Vice President
Chief Operating Officer                         President, Ag Services

Brian L. Larson                                 Scott A. Fleck
Senior Vice President                           Vice President
Chief Financial Officer and                     Director of Engineering
Secretary
                                                Daniel A. Petersen
James J. Marquiss                               Corporate Controller and
Senior Vice President                           Treasurer
Director of Business Research and
Product Development                             Joseph A. Urzendowski
                                                Vice President, Operations
Roger W. Wallace
Senior Vice President
President, Ag Services Division

Charles R. Wood
Senior Vice President
President, Financial Services Division
                                       58
                                     -350-
<PAGE>

Investor Information

Corporate Headquarters
Data Transmission Network Corporation
9110 West Dodge Road, Suite 200
Omaha, NE 68114

(402) 390-2328
www.dtn.com

Independent Auditors
Deloitte & Touche LLP

Stock Transfer Agent
First National Bank of Omaha
Attn: Corporate Trust Services
One First National Center
Omaha, Nebraska 68102

Annual Shareholders Meeting
The annual shareholders meeting is scheduled for Wednesday,  April 26, 2000.

Form 10-K
A copy of the company's form 10-K filed with the securities and exchange
commission is available without charge upon written request to:

Secretary
Data Transmission Network Corporation
9110 West Dodge Road, Suite 200
Omaha, Nebraska 68114

Dividends
The  Company has never paid any  dividends  and has no present  intention  of so
doing.  Payment of cash  dividends in the future,  if any, will be determined by
the Board of Directors in light of the Company's  earnings,  financial condition
and other relevant considerations.

                                       59
                                     -351-


                                                                      Exhibit 21

SUBSIDIARIES OF THE REGISTRANT:

(1)      Kavouras,  Inc. which is organized and operates out of Minnesota  under
         the same name.
(2)      National  Datamax  which is organized  and  operates out of  California
         under the same name.
(3)      Weather  Services  Corporation  which is organized  and operates out of
         Massachusetts under the same name.
(4)      DTN Market  Communications  Group,  Inc. which is organized in Nebraska
         and includes the EarthWatch License Agreement.
(5)      Paragon Software,  Inc. which is organized in Illinois and operates out
         of Wisconsin under the same name.
(6)      Asset Growth Corporation which is organized in Delaware.
(7)      Electronic Futures Trading Corporation which is organized in Nebraska.


                                     -348-


                                                                      Exhibit 23
INDEPENDENT AUDITORS' CONSENT

         We consent to the incorporation by reference in Registration Statements
No.  33-50406 and No.  33-50412 of Data  Transmission  Network  Corporation  and
subsidiaries  on Forms S-8 of our reports dated  February 9, 2000 (March 3, 2000
as to Note 18), appearing in and incorporated by reference in this Annual Report
on Form 10-K of the Data Transmission  Network  Corporation and subsidiaries for
the year ended December 31, 1999.

DELOITTE & TOUCHE LLP


Omaha, Nebraska
March 15, 2000
                                     -349-


<TABLE> <S> <C>


<ARTICLE>                     5

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>               DEC-31-1999
<PERIOD-START>                  JAN-01-1999
<PERIOD-END>                    DEC-31-1999
<CASH>                                    0
<SECURITIES>                              0
<RECEIVABLES>                    11,873,472
<ALLOWANCES>                      1,800,000
<INVENTORY>                               0
<CURRENT-ASSETS>                 20,447,344
<PP&E>                          305,293,894
<DEPRECIATION>                  214,172,557
<TOTAL-ASSETS>                  184,003,178
<CURRENT-LIABILITIES>            40,089,631
<BONDS>                          79,038,332
                     0
                               0
<COMMON>                             11,985
<OTHER-SE>                       37,484,935
<TOTAL-LIABILITY-AND-EQUITY>    184,003,178
<SALES>                         166,508,602
<TOTAL-REVENUES>                166,508,602
<CGS>                                     0
<TOTAL-COSTS>                   162,351,849
<OTHER-EXPENSES>                          0
<LOSS-PROVISION>                          0
<INTEREST-EXPENSE>                8,820,476
<INCOME-PRETAX>                  (4,805,160)
<INCOME-TAX>                     (1,098,469)
<INCOME-CONTINUING>              (3,706,691)
<DISCONTINUED>                            0
<EXTRAORDINARY>                           0
<CHANGES>                                 0
<NET-INCOME>                     (3,706,691)
<EPS-BASIC>                           (0.32)
<EPS-DILUTED>                         (0.32)





</TABLE>


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