PREFERRED NETWORKS INC
SC 13D, 1998-03-27
RADIOTELEPHONE COMMUNICATIONS
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                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                  Schedule 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. __)*



                             Preferred Networks, Inc.
                                 (Name of Issuer)

                     Common Stock, no par value per share
                          (Title of Class of Securities)

                                      73990510
                                    (CUSIP Number)

                              Thomas R. Stephens, Esq.
                       Bartlit Beck Herman Palenchar & Scott
                           511 Sixteenth Street Suite 700
                                Denver, Colorado 80202
                                    (303) 592-3100
                   (Name, Address and Telephone Number of Person
                  Authorized to Receive Notices and Communications)

                                    March 17, 1998
                (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box.

     Note: Six copies of this statement, including all exhibits, should be filed
with the  Commission.  See Rule 13d-1(a) for other parties to whom copies are to
be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                       (Continued on following page(s))

                              Page 1 of 13 Pages


<PAGE>


CUSIP No.  73990510         13D            Page     2     of     13      Pages

      1        NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

               Alta Communications, Inc.

      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                  (a)
                                                  (b)

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*


      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEMS 2(D) OR 2(E)


      6        CITIZENSHIP OR PLACE OF ORGANIZATION
 
               Massachusetts

               NUMBER OF                  7     SOLE VOTING POWER

               SHARES                           3,712,500

                                          8     SHARED VOTING POWER
            BENEFICIALLY

              OWNED BY                          0

                                          9     SOLE DISPOSITIVE POWER
                EACH

              REPORTING                         3,712,500

                                         10     SHARED DISPOSITIVE POWER
               PERSON

                WITH                            0

     11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
               3,712,500

     12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
               SHARES*
 

     13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

               18.6%


     14        TYPE OF REPORTING PERSON*

               IA

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


CUSIP No.  73990510        13D          Page     3     of     13      Pages


      1        NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

               Alta Comm S By S, LLC


      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                  (a)
                                                  (b) 

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*

               WC


      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEMS 2(D) OR 2(E)


      6        CITIZENSHIP OR PLACE OF ORGANIZATION
 
               Massachusetts

              NUMBER OF                   7     SOLE VOTING POWER

               SHARES                           82,627

                                          8     SHARED VOTING POWER
            BENEFICIALLY

              OWNED BY                          0

                                          9     SOLE DISPOSITIVE POWER
                EACH

              REPORTING                         82,627

                                         10     SHARED DISPOSITIVE POWER
               PERSON

                WITH
                                               0

     11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

               82,627


     12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
               SHARES*
  

     13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
  
               .5%


     14        TYPE OF REPORTING PERSON*


                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


CUSIP No.  73990510      13D           Page     4     of     13      Pages


      1        NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
 
               Alta Communications VI, L.P.


      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                             (a)
                                             (b)

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*

               WC


      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEMS 2(D) OR 2(E)
 

      6        CITIZENSHIP OR PLACE OF ORGANIZATION
 
               Delaware

              NUMBER OF                   7     SOLE VOTING POWER

               SHARES                           3,629,873

                                          8     SHARED VOTING POWER
            BENEFICIALLY

              OWNED BY                          0

                                          9     SOLE DISPOSITIVE POWER
                EACH

              REPORTING                         3,629,873

                                         10     SHARED DISPOSITIVE POWER
               PERSON

                WITH                            0

     11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
               3,629,873

     12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
               SHARES*
 

     13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

               18.2%

     14        TYPE OF REPORTING PERSON*
 
               PN

                     * SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>


CUSIP No.  73990510               13D       Page     5     of     13      Pages
 

      1        NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

               Alta Communications VI Management Partners, L.P.


      2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                  (a)
                                                  (b) 

      3        SEC USE ONLY


      4        SOURCE OF FUNDS*
 
               WC


      5        CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
               TO ITEMS 2(D) OR 2(E)
 

      6        CITIZENSHIP OR PLACE OF ORGANIZATION
 
               Delaware

              NUMBER OF                   7     SOLE VOTING POWER

               SHARES                           3,629,873

                                          8     SHARED VOTING POWER
            BENEFICIALLY

              OWNED BY                          0

                                          9     SOLE DISPOSITIVE POWER
                EACH

              REPORTING                         3,629,873

                                         10     SHARED DISPOSITIVE POWER
               PERSON

                WITH                            0

     11        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

               3,629,873

     12        CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN 
               SHARES*
 

     13        PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 
               18.2%


     14        TYPE OF REPORTING PERSON*
 
               PN


                     * SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>




                               Page 11 of 13 Pages


Item 1.  Security and Issuer.

                  This Statement on Schedule 13D relates to the Common Stock, no
par value per share (the  "Shares"),  of  Preferred  Networks,  Inc.,  a Georgia
corporation (the "Company").  The principal executive offices of the Company are
located at 850 Center Way, Norcross, Georgia 30071.


Item 2.  Identity and Background.

                  (a) This Statement is filed by Alta Communications VI, L.P., a
Delaware  limited  partnership  ("Alta  VI"),  and  Alta  Comm  S by S,  LLC,  a
Massachusetts  limited liability company ("Alta LLC"), by virtue of their direct
beneficial  ownership of Shares, by Alta Communications VI Management  Partners,
L.P., a Delaware limited partnership ("Alta Management"), by virtue of being the
sole  general  partner  of  Alta  VI,  and  by  Alta  Communications,   Inc.,  a
Massachusetts  corporation  ("Alta  Communications"),  by  virtue  of being  the
management  advisory  company of Alta VI. Alta VI, Alta LLC, Alta Management and
Alta  Communications  are collectively  referred to as the "Reporting  Persons."
Robert  Benbow,  William P.  Egan,  Brian  McNeill  and  Timothy  Dibble are the
managing general partners of Alta Management and officers of Alta Communications
(the "Partners"). By virtue of the relationships described above and their roles
with Alta  Communications,  each of the  Partners  may be deemed to control Alta
Communications and Alta Management,  and Alta Communications and Alta Management
may be deemed to possess  indirect  beneficial  ownership  of the Shares held by
Alta VI. However,  none of the Partners,  acting alone, has voting or investment
power with respect to the Shares directly beneficially held by Alta VI and, as a
result,  the  Partners  disclaim  beneficial  ownership  of the Shares  directly
beneficially  owned by Alta VI, except to the extent of their pecuniary interest
in Alta VI. Alta LLC is a side  company that makes all  investments  pro rata to
the capital of Alta VI with all allocations made to its members based on paid-in
capital.  Certain of the Partners are members of Alta LLC and certain members of
Alta LLC are affiliates of Alta Communications.

                  (b) The principal  executive  offices of Alta  Communications,
Alta VI, Alta Management and Alta LLC, and the business address of each Partner,
except Robert Benbow, are located at One Post Office Square, Suite 3800, Boston,
Massachusetts 02109. Robert Benbow's business address is One Embarcadero Center,
Suite 4050, San Francisco, California 94111.

                  (c) Alta Communications  provides investment advisory services
to venture capital firms. Alta VI and Alta LLC's principal business is acting as
venture capital  investment  vehicles.  Alta Management's  principal business is
acting as general partner of Alta VI. Each of the Partners'  principal  business
is acting as a managing  general partner of Alta Management and as an officer of
Alta Communications.

                  (d) None of the Reporting  Persons or, to the knowledge of the
Reporting  Persons,  any of the  Partners,  has  been  convicted  in a  criminal
proceeding  in the past five  years  (excluding  traffic  violations  or similar
misdemeanors).

                  (e) During the past five years,  none of the Reporting Persons
or, to the knowledge of the Reporting Persons, any of the Partners,  was a party
to a  civil  proceeding  of a  judicial  or  administrative  body  of  competent
jurisdiction  as a result of which such  person was or is subject to a judgment,
decree  or final  order  enjoining  future  violations  of,  or  prohibiting  or
mandating activities subject to, federal or state securities laws of finding any
violation with respect to such laws.

                  (f) Alta Communications is a Massachusetts  corporation.  Alta
VI is a  Delaware  limited  partnership.  Alta  LLC is a  Massachusetts  limited
liability corporation.  Alta Management is a Delaware limited partnership.  Each
of the Partners is a citizen of the United States.


Item 3.  Source and Amount of Funds or Other Consideration.

                  The total  amount of funds  required by Alta VI to acquire the
3,585,060  shares of Class B Senior  Redeemable  Preferred  Stock (the  "Class B
Shares") and the 3,629,873 warrants to purchase Shares (the "Warrants") reported
in Item 5(a) was $5,377,590,  and the total amount of funds required by Alta LLC
to acquire the 81,607 shares of Class B Shares and the 82,627 Warrants  reported
in Item 5(a) was $122,410.50.  Such funds were provided by such person's capital
available for investment.

                  The  Reporting  Persons   understand  that  the  unvested  and
restricted Shares held by Robert Benbow, as reported in Item 5(c), were acquired
by such person in consideration of his service as a director of the Company.

Item 4.  Purpose of Transaction.

                  Alta VI and Alta LLC  acquired the Class B Shares and Warrants
reported in Item 5(c) for investment  only.  Depending upon their  evaluation of
the  Company's   investments  and  prospects,   and  upon  future   developments
(including,  but not limited to,  market for the Shares,  the Class B Shares and
Warrants, the effective yield on the Shares and the Class B Shares, availability
of funds,  alternative  uses of funds,  and  money,  stock  market  and  general
economic  conditions),  each of the  Reporting  Persons  may  from  time to time
purchase the Shares, Class B Shares and/or Warrants, dispose of all or a portion
of the Shares,  Class B Shares and/or Warrants that it holds, or cease buying or
selling Shares, Class B Shares and/or Warrants. Any such additional purchases or
sales of the Shares,  Class B Shares  and/or  Warrants  may be in open market or
privately-negotiated transactions or otherwise.

                  On March 17, 1998, Alta VI and Alta LLC entered into a Class B
Senior  Redeemable  Preferred  Stock  Purchase  Agreement (the "Class B Purchase
Agreement") with the Company and certain other investors  pursuant to which Alta
VI and Alta LLC acquired,  for an aggregate  purchase price of $5,500,000.50,  a
total of 3,666,667 Class B Shares and 3,712,500 Warrants.

                  The Class B Shares are entitled to a liquidation preference of
$1.50 per share plus  accrued  dividends.  Dividends  on the Class B Shares will
accrue on the  liquidation  preference at the rate of 15% per annum,  compounded
annually,  in  preference  to any  dividends  on the Shares and any other  class
ranking junior to the Class B Shares. The Class B Shares will be entitled to one
vote per share and will be entitled to vote  together  with the common  stock on
matters  submitted to a vote of the  Company's  stockholders.  In addition,  the
Class B Shares will be entitled  to a class vote on certain  matters,  including
without  limitation  repurchases  of  common  stock,  material  changes  in  the
Company's  line  of  business,  entering  into  any  merger,   consolidation  or
amalgamation,  sale  of  all or  substantially  all  of  the  Company's  assets,
acquisitions of more than $5,000,000,  and incurring certain  indebtedness.  The
Class B Shares are  redeemable  at any time by the  Company at a price  equal to
$1.50 plus accrued dividends, and each holder of Class B Shares may require that
its Class B Shares be  redeemed  at any time after  March 17, 2003 or earlier in
certain circumstances.  The holders of Class B Shares are entitled to preemptive
rights in connection  with any new issuance of equity  securities by the Company
in a private placement.  In addition, the holders of Class B Shares are entitled
to elect one director.

                  Each 1998  Warrant  permits a holder to  acquire,  at any time
during  the five year  period  commencing  on March 17,  1998,  one Share for an
exercise price of $1.50 per Share, subject to adjustment as provided in the form
of the 1998 Warrant.  Payment of the exercise price may be made in cash, debt or
equity securities of the Company, or by withholding from the Shares otherwise to
be  delivered  upon  exercise a number of Shares which have a value equal to the
exercise  price.  Under some  circumstances  the holders of the  Warrants may be
required to exercise the Warrants prior to their expiration.

                  Pursuant to the Class B Purchase  Agreement,  Alta VI and Alta
LLC and the Company and certain other  stockholders  of the Company  amended the
Registration  Rights Agreement dated as of June 21, 1995, among such persons, as
amended  (the  "1998  Registration  Rights  Amendment"),  pursuant  to which the
holders of Warrants will have the right to exercise certain demand and piggyback
registration rights with respect to, and, subject to certain  restrictions,  the
Company will be required to register, the Shares obtainable upon exercise of the
Warrants.

                  Pursuant to the Class B Purchase Agreement, the Company, among
other things, (i) made certain  representations  and warranties to the investors
acquiring  Class B Shares and  Warrants,  (ii) agreed to provide such  investors
with certain  inspection and information  rights,  and (iii) agreed to reimburse
such investors for certain expenses.

                  The foregoing summaries of the Class B Purchase Agreement, the
rights and preferences of the Class B Shares,  the terms of the Warrants and the
1998 Registration  Rights Amendment are qualified in their entirety by reference
to the Class B Purchase  Agreement  attached hereto as Exhibit 1, the rights and
preferences of the Class B Shares  attached hereto as Exhibit 1, the form of the
1998  Warrant  attached  hereto as Exhibit 3, and the 1998  Registration  Rights
Amendment attached hereto as Exhibit 4, respectively.

                  Mr.  Benbow holds the unvested  Shares  described in Item 5 of
this  Statement  for  investment  only.  Depending  upon his  evaluation  of the
Company's  investments and prospects,  and upon future developments  (including,
but not limited to, performance of the Shares in the market, the effective yield
on the Shares,  availability  of funds,  alternative  uses of funds,  and money,
stock market and general economic conditions),  Mr. Benbow may from time to time
purchase  Shares,  dispose of all or a portion of the Shares he holds,  or cease
buying or selling Shares.  Any such additional  purchases or sales of the Shares
may be in open market or privately-negotiated transactions or otherwise.

                  Except as  described  in this  Item 4,  none of the  Reporting
Persons nor any of the Partners  has  formulated  any plans or  proposals  which
relate to or would result in any matter  required to be disclosed in response to
paragraphs (a) through (j) of Item 4 of Schedule 13D.


Item 5.  Interest in Securities of the Issuer.

                  (a)  Alta  VI is the  direct  beneficial  owner  of  3,629,873
Warrants, or approximately 18.24% of the sum of (i) the 16,270,028 Shares deemed
outstanding  as of March 17, 1998,  according to  information  received from the
Company,  plus (ii) such  Warrants.  By virtue of the  relationships  previously
reported under Item 2 of this Statement, Alta Communications and Alta Management
may be deemed to have  indirect  beneficial  ownership of the Warrants  directly
beneficially owned by Alta VI.

                  Alta LLC is the direct beneficial owner of 82,627 Warrants, or
approximately  .5% of the sum of (i)  the  Outstanding  Shares  plus  (ii)  such
Warrants.  By virtue of the  relationships  previously  reported under Item 2 of
this Statement,  the Partners and certain other individuals affiliated with Alta
Communications  may be  deemed  to have  indirect  beneficial  ownership  of the
Warrants directly beneficially owned by Alta LLC.

                  Robert Benbow holds 12,500 unvested Shares, or less than 1% of
the Outstanding  Shares.  Such Shares are held on behalf of Alta VI. Such Shares
are subject to certain  vesting  restrictions  and were issued to Mr.  Benbow in
connection with his services to the Company as a director.  Mr. Benbow disclaims
beneficial  ownership of such Shares, and Alta IV may be deemed to have indirect
beneficial ownership of such Shares.

                  Alta VI has the direct power to direct the  disposition of and
vote the Warrants held by it. By virtue of the relationships previously reported
under Item 2 of this Statement,  Alta Management and Alta  Communications may be
deemed  to  have  indirect   beneficial   ownership  of  the  Warrants  directly
beneficially owned by Alta VI.

                  Alta LLC has the direct power to direct the disposition of and
vote the Warrants held by it. By virtue of the relationships previously reported
under Item 2 of this  Statement,  the  Partners  and certain  other  individuals
affiliated with Alta  Communications  may be deemed to have indirect  beneficial
ownership of the Warrants directly beneficially owned by Alta LLC.

                  Mr.  Benbow has the power to vote the Shares held  directly by
him, and the power to direct  disposition of vested Shares directly held by him.
Under the  restrictions  applicable  to such  Shares,  unvested  Shares  are not
transferable.

                  (c) On March  17,  1998,  Alta VI and Alta  LLC  acquired  the
Warrants  described  in  Item 3 of  this  Statement  in a  privately  negotiated
transaction  with the Company for  aggregate  consideration  of  $5,337,590  and
$122,410.50, respectively.

                  On March 17, 1998,  Robert  Benbow was appointed as a director
of the Company and was granted 12,500  restricted  Shares in connection with his
service to the Company as a director, or less than 1% of the Outstanding Shares.
Such Shares are subject to certain vesting restrictions.

                  Except as set forth above,  neither the Reporting  Persons nor
the Partners  have  effected any  transaction  in the Shares  during the past 60
days.

                  (d) Alta VI has the right to  receive  and the power to direct
the receipt of dividends  from, and proceeds from the sale of, the Warrants held
by it. By virtue of the relationships reported in Item 2 of this Statement, Alta
Communications and Alta Management may be deemed to have the power to direct the
receipt of dividends  from, and the proceeds from the sale of, the Warrants held
by Alta VI.

                  Alta LLC has the right to receive  and the power to direct the
receipt of dividends  from,  and proceeds from the sale of, the Warrants held by
it. By virtue of the  relationships  previously  reported  under  Item 2 of this
Statement,  the  Partners and certain  other  individuals  affiliated  with Alta
Communications  may be  deemed  to have  indirect  beneficial  ownership  of the
Warrants directly beneficially owned by Alta LLC.

                  Mr.  Benbow has the right to  receive  and the power to direct
the  receipt  of  dividends  from,  and the  proceeds  from the sale of,  Shares
directly held by him after tax benefits are paid to Alta VI.

                  (e)      Not applicable.


Item 6.           Contracts, Arrangements, Understandings or Relationships With 
                  Respect to Securities of the Issuer.

                  The  information  included  under Item 4 of this  statement on
Schedule  13D in  connection  with the Class B Purchase  Agreement,  the Class B
Shares,  the 1998 Warrant and the 1998  Registration  Rights Amendment is hereby
incorporated in its entirety by this reference.

                  The unvested  Shares held by Mr. Benbow are subject to certain
restrictions set forth in a Director's Restricted Stock Agreement. The foregoing
summary of such agreement is qualified in its entirety by referenced to the form
of the  Directors  Restricted  Stock  Agreement  attached  as  Exhibit 5 to this
Statement.

                  Other than set forth above,  none of the Reporting Persons has
any contract,  arrangement,  understanding or relationship  (legal or otherwise)
with any person with respect to  securities of the Company,  including,  but not
limited to,  transfer or voting of any such  securities,  finder's  fees,  joint
ventures,  loans or option arrangements,  puts or calls,  guarantees of profits,
division of profits or losses, or the giving or withholding of proxies.


Item 7.  Material to be Filed as Exhibits.

                  Exhibit 1. Class B Senior Redeemable  Preferred Stock Purchase
                  Agreement dated as of March 17, 1998 among Alta Communications
                  IV, Alta Comm S By S, LLC,  Centennial  Fund IV,  L.P.,  Fleet
                  Equity  Partners  VI, L.P.,  Fleet  Venture  Resources,  Inc.,
                  Saugatuck Capital Company Limited Partnership III, PNC Capital
                  Corp.,  Primus Capital Fund III Limited  Partnership,  certain
                  other investors and Preferred Networks,  Inc., incorporated by
                  reference to Exhibit 10 to amendment  number 1 to the Schedule
                  13D filed by Centennial  Fund IV, L.P. in connection  with the
                  common stock of Preferred Networks, Inc. on March 24, 1998.

                  Exhibit 2. Articles of Amendment  setting forth the rights and
                  preferences of the Class B Senior  Redeemable  Preferred Stock
                  of  Preferred  Networks,  Inc.,  incorporated  by reference to
                  Exhibit 11 to amendment  number 1 to the Schedule 13D filed by
                  Centennial  Fund IV, L.P. in connection  with the common stock
                  of Preferred Networks, Inc. on March 24, 1998.

                  Exhibit 3. Form of Common Stock Purchase  Warrant to be issued
                  pursuant  to the  Class B Senior  Redeemable  Preferred  Stock
                  Purchase  Agreement  dated as of March  17,  1998  among  Alta
                  Communications IV, Alta Comm S By S, LLC,  Centennial Fund IV,
                  L.P., Fleet Equity Partners VI, L.P., Fleet Venture Resources,
                  Inc.,  Saugatuck Capital Company Limited  Partnership III, PNC
                  Capital Corp.,  Primus  Capital Fund III Limited  Partnership,
                  certain  other   investors  and  Preferred   Networks,   Inc.,
                  incorporated by reference to Exhibit 12 to amendment  number 1
                  to the  Schedule  13D filed by  Centennial  Fund IV,  L.P.  in
                  connection with the common stock of Preferred  Networks,  Inc.
                  on March 24, 1998.

                  Exhibit 4. Form of Amendment to Registration  Rights Agreement
                  dated June 21, 1995 among Alta  Communications IV, Alta Comm S
                  By S, LLC, Centennial Fund IV, L.P., Fleet Equity Partners VI,
                  L.P., Fleet Venture  Resources,  Inc.,  Chisholm  Partners II,
                  L.P.,  Saugatuck Capital Company Limited  Partnership III, PNC
                  Capital Corp.,  Primus  Capital Fund III limited  partnership,
                  Preferred   Networks,   Inc.,   and  certain  other   persons,
                  incorporated by reference to Exhibit 13 to amendment  number 1
                  to the  Schedule  13D filed by  Centennial  Fund IV,  L.P.  in
                  connection with the common stock of Preferred  Networks,  Inc.
                  on March 24, 1998.

                  Exhibit 5. Form of Director's Restricted Stock Award Agreement
                  between   Preferred   Networks,   Inc.   and  Robert   Benbow,
                  incorporated  by  reference  to Exhibit 2 to the  Statement on
                  Schedule 13D filed on April 21, 1997, by  Centennial  Fund IV,
                  L.P. and certain  other  investors in  connection  with common
                  stock of Preferred Networks, Inc.




<PAGE>



                                    Signature

                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  statement is true,
complete and correct.


Date:  March 27, 1998         /s/ Eileen McCarthy
                              Eileen  McCarthy,  as Vice President of Alta
                              Communications,  Inc., as general partner of
                              Alta Communications Management VI, L.P., the
                              general partner of Alta  Communications  VI,
                              L.P.,  and as a member  of Alta Comm S By S,
                              LLC




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