ALLIN COMMUNICATIONS CORP
SC 13D, 1996-11-12
BUSINESS SERVICES, NEC
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<PAGE>
 
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                  Schedule 13D
                   Under the Securities Exchange Act of 1934
                               (Amendment No. __)


                        Allin Communications Corporation
                        --------------------------------
                                (Name of Issuer)


                    Common Stock, par value $0.01 per share
                    ---------------------------------------
                         (Title of Class of Securities)



                                  019924 10 9
                         ----------------------------
                                 (CUSIP Number)

                                    Copy to:
 
Henry Posner, Jr.                   Bryan D. Rosenberger
500 Greentree Commons               Eckert Seamans Cherin & Mellott
381 Mansfield Avenue                42nd Floor, 600 Grant Street
Pittsburgh, PA  15220               Pittsburgh, PA  15219
(412) 928-8800                      (412) 566-6000
- -------------------------------------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)


                                November 6, 1996
                                ----------------
                      (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.  [ ]


<PAGE>
 
                                  SCHEDULE 13D

CUSIP No. 019924 10 9


1.   Name of Reporting Person:  Henry Posner, Jr.
     I.R.S. Identification No.:  ###-##-####

<TABLE>
<S>                      <C>                                               <C>                        <C>
2.                       Check the Appropriate Box if a Member of a Group  (a)                              [ ] 
                                                                           (b)                              [ ] 
 
3.                       SEC Use Only
 
4.                       Source of Funds:  PF/00
 
5.                       Check Box if Disclosure of Legal Proceedings is
                          Required Pursuant To Items 2(d) or 2(e)                                           [ ]
 
6.                       Citizenship or Place of Organization:  United States
 
Number of                7.  Sole Voting Power:                                                       1,111,240
 Shares                                               
Beneficially             8.  Shared Voting Power:                                                         - 0 -
 Owned by                                             
  Each                   9.  Sole Dispositive Power:                                                  1,111,240
Reporting                                             
 Person                  10. Shared Dispositive Power:                                                    - 0 -
  With
 
11.                      Aggregate Amount Beneficially Owned by Each                                   1,111,240
                         Reporting Person:
 
12.                      Check Box if the Aggregate Amount in Row (11)
                         Excludes Certain Shares                                                             [ ]  

13.                      Percent of Class Represented by Amount in Row (11):                                22.7%

14.                      Type of Reporting Person:  IN
</TABLE>
<PAGE>
 
Item 1.  Security and Issuer.

          The title of the class of equity securities to which this Schedule 13D
relates is the common stock, par value $0.01 per share (the "Common Stock"), of
Allin Communications Corporation (the "Company").  The Company's principal
executive offices are located at 300 Greentree Commons, 381 Mansfield Avenue,
Pittsburgh, Pennsylvania 15220.  All share numbers and percentages reported
herein give effect to a 2,400 to 1 split of the Common Stock which occurred in
October, 1996.


Item 2.  Identity and Background.

          This statement is filed on behalf of Henry Posner, Jr. (the "Reporting
Person"), a United States citizen, whose business address is 500 Greentree
Commons, 381 Mansfield Avenue, Pittsburgh, Pennsylvania 15220.  The Reporting
Person's principal occupation is private investor.

          During the past five years, the Reporting Person has not (i) been
convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors) or (ii) been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result 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, or finding any violation with respect to such laws.


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

          The Reporting Person acquired 964,800 of the shares of Common Stock
reported herein in August 1996 in connection with the merger of SeaVision, Inc.
with and into a wholly owned subsidiary of the Company.  In such merger, each
stockholder of SeaVision, Inc. received one share of Common Stock for each share
of SeaVision common stock held by such person.  At the time of the merger, the
Common Stock was not registered under Section 12 of the Securities Exchange Act
of 1934, as amended (the "Exchange Act").  In connection with the initial public
offering of the Company's Common Stock, on November 6, 1996 the Reporting Person
acquired 146,440 shares of Common Stock in exchange for the extinguishment of
loans made by the Reporting Person to the Company in the aggregate principal
amount of $1,800,000.

          In August 1996, the Reporting Person purchased with $705,882.35 of his
own funds, 7,058.8235 shares of the Company's Series A Convertible Redeemable
Preferred Stock (the "Series A Preferred Stock"), which will become convertible,
at the option of the Reporting Person beginning in May 1997 and ending in
December 1997, into 57,427 shares of Common Stock.
<PAGE>
 
Item 4.  Purpose of Transaction.

          The Reporting Person has no present plans or proposals to change the
Company's business, corporate structure, capitalization, management or dividend
policy.

          Except as set forth in this Item 4, the Reporting Person has no
present plans or proposals which relate to or would result in any of the
following (although the Reporting Persons reserve the right to develop such
plans or proposals or any other plans relating to the Company and to take action
with respect thereto):  (i) the acquisition by any person of additional
securities of the Company, or the disposition of securities of the Company; (ii)
an extraordinary corporate transaction, such as a merger, reorganization or
liquidation, involving the Company or any of its subsidiaries; (iii) a sale or
transfer of a material amount of assets of the Company or any of its
subsidiaries; (iv) any change in the present board of directors or management of
the Company, including any plans or proposals to change the number or term of
directors or to fill any existing vacancies on the board; (v) any material
change in the present capitalization or dividend policy of the Company; (vi) any
other material change in the Company's business or corporate structure; (vii)
changes in the Company's certificate of incorporation, bylaws, or instruments
corresponding thereto or other actions which may impede the acquisition of
control of the Company by any person; (viii) causing a class of securities of
the Company to be delisted from a national securities exchange or to cease to be
authorized to be quoted in an inter-dealer quotation system of a registered
national securities association; (ix) a class of equity securities of the
Company becoming eligible for termination of registration pursuant to Section
12(g)(4) of the Exchange Act; or (x) any action similar to any of those
enumerated above.

          The Reporting Person, without the consent of the Company, may purchase
additional shares of Common Stock in the open market or in private transactions
at any time.  The Reporting Person also owns 7,058.8235 shares of Series A
Preferred Stock which will become convertible, at the option of the Reporting
Person beginning in May 1997 and ending in December 1997, into 57,427 shares of
Common Stock.


Item 5.  Interest in Securities of Issuer.

          The Reporting Person beneficially owns and has sole voting and
dispositive power with respect to 1,111,240 shares of Common Stock representing
approximately 22.7% of the Common Stock outstanding.  The Reporting Person may
also be deemed to own the 57,427 shares of Common Stock into which the
7,058.8235 shares of Series A Preferred Stock owned by the Reporting Person may
be converted.  After giving effect to such conversion and assuming no other
change in beneficial ownership or shares outstanding, the Reporting Person would
beneficially own 1,168,667 shares of Common Stock representing approximately
23.6% of the Common Stock outstanding.
<PAGE>
 
          Except as described herein, no transactions in Common Stock were
effected during the past 60 days by the Reporting Person.


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

          The Reporting Person has agreed with Friedman, Billings, Ramsey & Co.,
Inc., the representative of the underwriters of the Company's initial public
offering, not to sell any shares of Common Stock owned by the Reporting Person
for a period of 360 days following the closing of such offering.  The Company
has granted the Reporting Person certain rights to require the Company to
register the shares of Common Stock currently owned by the Reporting Person or
acquired upon conversion of the shares of Series A Preferred Stock owned by the
Reporting Person under the Securities Act of 1933, as amended, for public
offering and sale.


Item 7.  Material to be Filed as Exhibits.

A.       Letter Agreement dated October 31, 1996 between Friedman, Billings,
         Ramsey & Co., Inc. and the Reporting Person.
   
B.       Registration Rights Agreement, dated July 23, 1996, by and among the
         Company, the Reporting Person and certain stockholders other of the
         Company.
   
C.       Registration Rights Agreement, dated July 23, 1996, by and among the
         Company, the Reporting Person and certain stockholders other of the
         Company.
<PAGE>
 
Signatures.

          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.



November 12, 1996                                 By:  /s/ Henry Posner, Jr.
- -----------------                                      ---------------------
     Date                                              Henry Posner, Jr.
 
<PAGE>
 
                                   EXHIBIT A

                                October 31, 1996

Friedman, Billings, Ramsey & Co., Inc.
Potomac Tower
1001  19th Street North, 10th Floor
Arlington, Virginia  22209

Re:  Allin Communications Corporation
     Proposed Initial Public Offering of Common Stock

Dear Sirs:

     The undersigned understands that Friedman, Billings, Ramsey & Co., Inc.,
as Representatives (the "Representatives") of the several underwriters (the
"Underwriters") propose to enter into an Underwriting Agreement with Allin
Communications Corporation (the "Company"), providing for the initial public
offering by the Underwriters, including the Representatives, of common stock,
par value $0.01 per share ("the Common Stock") of the Company (the "Initial
Public Offering").

     In consideration of the Underwriters' agreement to purchase, and undertake
the Initial Public Offering of, the Company's Common Stock and for other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the undersigned agrees not to, directly or indirectly, offer,
sell, contract to sell, grant any option to purchase or otherwise dispose of any
Common Stock (including, without limitation, shares of Common Stock which may be
deemed to be beneficially owned by the undersigned in accordance with the rules
and regulations of the Securities and Exchange Commission and shares of Common
Stock which may be issued upon exercise of a stock option or warrant) or any
securities convertible into or exercisable or exchangeable for such Common Stock
or, in any manner, transfer all or a portion of the economic consequences
associated with the ownership of the Common Stock, for a period of 360 days
after the effective date of the Company's Registration Statement on Form S-1
relating to the Initial Public Offering (the "Registration Statement"), other
than (i) as a gift or gifts, provided the donee or donees thereof agree in
writing to be bound by this letter agreement, (ii) transfers to a transferor's
affiliates, as such term is defined in Rule 405 promulgated under the Securities
Act of 1933, as amended (the "Securities Act"), provided the transferees agree
in writing to be bound by this letter agreement, or (iii) with the prior written
consent of the Representatives.  The undersigned further agrees that for a
period of 360 days after the effective date of the Registration Statement, the
undersigned will not exercise any rights that the undersigned may have to cause
the Company to register (under the Securities Act or otherwise) any shares of
Common Stock or any securities convertible into or exercisable or exchangeable
for shares of Common Stock, without the prior written consent of the
Representatives.
<PAGE>
 
     In addition, the undersigned agrees that the Company may, with respect to
any shares of Common Stock for which the undersigned is the record holder, cause
the transfer agent for the Company to note stop transfer instructions with
respect to such shares of Common Stock on the transfer books and records of the
Company.  The undersigned further agrees that the undersigned will, if requested
by the Company with respect to any shares of Common Stock for which the
undersigned is the beneficial holder but not the record holder, cause the record
holder of such shares of Common Stock to cause the transfer agent for the
Company to note stop transfer instructions with respect to such shares of Common
Stock on the transfer books and records of the Company.

     The undersigned hereby represents and warrants that the undersigned has
full power and authority to enter into this letter agreement, and that, upon
request, the undersigned will execute any additional documents necessary or
desirable in connection with the enforcement hereof.  All authority herein
conferred or agreed to be conferred shall survive the death or incapacity of the
undersigned and any obligations of the undersigned shall be binding upon the
heirs, personal representatives, successors, and assigns of the undersigned.


                                    Very truly yours,


                                    __________________________
                                    (Signature)
________________________
(Name - Please Type)


________________________

________________________

________________________
(Address)


________________________
(Social Security or Taxpayer Identification No.)
<PAGE>
 
                                   EXHIBIT B


                         REGISTRATION RIGHTS AGREEMENT

          This REGISTRATION RIGHTS AGREEMENT (this "Agreement") is made and
entered into as of this 23rd day of July, 1996, by and among ALLIN
COMMUNICATIONS CORPORATION, a Delaware corporation (the "Company"), and the
stockholders of SeaVision, Inc., a Delaware corporation ("SeaVision"), whose
names appear on the signature page hereof (collectively, the "Stockholders").

                              W I T N E S S E T H:
                              - - - - - - - - - - 

     WHEREAS, the Company, SeaVision and SeaVision Acquisition Corporation, a
Delaware corporation ("SVAC"), have entered into an Agreement and Plan of Merger
pursuant to which SeaVision will be merged with and into SVAC (the "Merger") and
each outstanding share of SeaVision common stock, will be converted into and
exchanged for one share of common stock, par value $0.01 per share, of the
Company (the "Common Stock"); and

     WHEREAS, the Common Stock to be issued in the Merger will be issued without
registration under the Securities Act of 1933, as amended, and applicable state
securities laws, and the Company and the Stockholders desire to provide
hereunder for compliance therewith and for the possible registration of the
shares of Common Stock issued upon consummation of the Merger and certain other
shares of Common Stock that the Stockholders may acquire.

          NOW, THEREFORE, in consideration of the premises and the mutual
independent covenants contained herein, the parties hereto, intending to be
legally bound hereby, agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

          1.1  Definitions.  As used in this Agreement,  the following
               -----------                                            
capitalized terms have the meanings set forth below.

          Applicable Period - In the case of a Shelf Registration Statement, the
          -----------------                                                     
     period referred to in Section 2.1(a)(ii), and in the case of any other
     Registration Statement, nine months or such shorter period as is necessary
     to complete the distribution of the Registrable Securities covered thereby.
<PAGE>
 
          Commencement Date - The date which is one year following the Public
          -----------------                                                  
     Offering Date.

          Demand - As defined in Section 2.1(a)(i) hereof.
          ------                                          

          Exchange Act - The Securities Exchange Act of 1934, as amended, or
          ------------                                                      
     similar federal statute then in effect, and a reference to a particular
     section thereof or regulation thereunder shall be deemed to include a
     reference to the comparable section, if any, of, or regulation, if any,
     under, any such similar federal statute.

          Majority Holders - Qualified Holders holding a majority of the
          ----------------                                              
     Registrable Securities included in a Shelf Registration Statement.

          Notice of Demand - As defined in Section 2.1(a)(i) hereof.
          ----------------                                          

          Person - An individual, partnership, joint venture, corporation,
          ------                                                          
     trust, unincorporated organization or government or any department or
     agency thereof.

          Piggy-back Registration - A registration of Shares pursuant to Section
          -----------------------                                               
     2.1(b) hereof.

          Prospectus - The prospectus included in a Registration Statement,
          ----------                                                       
     including any preliminary prospectus, and any such Prospectus as amended or
     supplemented by any prospectus supplement with respect to the terms of the
     offering of any portion of the Registrable Securities covered by a
     Registration Statement, and by all other amendments and supplements to such
     Prospectus, including post-effective amendments, and in each case including
     all exhibits thereto and all material incorporated by reference therein.

          Public Offering Date - The date on which the Company closes an initial
          --------------------                                                  
     public offering of Common Stock.

          Qualified Holder - Each Stockholder so long as it or he holds any of
          ----------------                                                    
     the Shares held by it or him on the Public Offering Date and each Person to
     whom a Stockholder or a Qualified Holder transfers such Shares.

          Registrable Securities - Any Shares issued to, and on the Commencement
          ----------------------                                                
     Date held by, a Qualified Holder.  As to any Registrable Securities, once
     issued such securities shall cease to be Registrable Securities when (i) 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 or, if
     earlier, when the Applicable Period shall have expired with respect to such
     securities; (ii) they shall have been distributed to the public pursuant to
     Rule 144 (or any successor provision) under the Securities Act; (iii) new

                                      -4-
<PAGE>
 
     certificates for them not bearing a legend restricting further transfer
     shall have been delivered by the Company and subsequent disposition of them
     shall not require registration or qualification of them under the
     Securities Act or any similar state law then in force; or (iv) they shall
     have ceased to be outstanding.

          Registration Statement - The Shelf Registration Statement, any
          ----------------------                                        
     registration statement registering Shares held by Qualified Holders
     pursuant to Section 2.1(b) hereof and all amendments and supplements to any
     such Registration Statement, including post-effective amendments, in each
     case including the Prospectus contained therein, all exhibits thereto and
     all material incorporated by reference therein.

          SEC - The Securities and Exchange Commission.
          ---                                          

          Securities Act - The Securities Act of 1933, as amended, or similar
          --------------                                                     
     federal statute then in effect, and a reference to a particular section
     thereof or regulation thereunder shall be deemed to include a reference to
     the comparable section, if any, of, or regulation, if any, under, such
     similar federal statute.

          Seller - As defined in Section 2.1(g) hereof.
          ------                                       

          Shares - The shares of Common Stock to be issued to Qualified Holders
          ------                                                               
     upon consummation of the Merger, any shares of Common Stock issued to a
     Qualified Holder  prior to or as of the Public Offering Date and any shares
     of Common Stock issued as a stock dividend or in a stock split or in
     connection with any other stock combination or division in respect of the
     Shares.

          Shelf Registration - A registration required to be effected pursuant
          ------------------                                                  
     to Section 2.1(a).

          Shelf Registration Statement - A "shelf" registration statement of the
          ----------------------------                                          
     Company pursuant to the provisions of Section 2.1(a) of this Agreement
     which covers Registrable Securities and is filed on Form S-3 under Rule 415
     under the Securities Act, or any similar rule that may be adopted by the
     SEC, and all amendments and supplements to such registration statement,
     including post-effective amendments, in each case including the Prospectus
     contained therein, all exhibits thereto and all material incorporated by
     reference therein.

          Underwriter - A person who acts as an underwriter with respect to any
          -----------                                                          
     registration of securities pursuant to this Agreement.

          Underwritten Offering - A sale of securities of the Company to an
          ---------------------                                            
     Underwriter or Underwriters for reoffering to the public.


                                      -5-
<PAGE>
 
                                 ARTICLE II

                              REGISTRATION RIGHTS

          2.1  Registration.
               ------------ 

          (a)  Shelf Registration.
               ------------------ 

               (i) At any time from the Commencement Date until the third
          anniversary of the Commencement Date, one or more Qualified Holders
          holding in the aggregate at least ten percent of the Shares (as
          adjusted for stock splits, stock dividends, reverse stock splits or
          any other combination or division of the Shares) will be entitled to
          deliver to the Company, on one occasion, a written notice (a "Demand")
          requesting a Shelf Registration.  Upon receipt of a Demand, the
          Company will deliver to each Qualified Holder a written notice (the
          "Notice of Demand") which shall include a copy of the Demand together
          with a statement to the effect that the Company will include all
          Registrable Securities in a Shelf Registration pursuant to this
          Section 2.1(a) unless the Company receives, by a date specified in the
          Notice of Demand (which shall be no less than 20 days following the
          delivery of such Notice of Demand), a notice from a Qualified Holder
          to exclude all or a portion of such Qualified Holder's Registrable
          Securities from such Shelf Registration.  Following receipt of a
          Demand, the Company shall, as expeditiously as reasonably possible,
          use its best efforts to effect a Shelf Registration of all Registrable
          Securities except those which a Qualified Holder has on a timely basis
          requested to be excluded from such Shelf Registration and those of any
          Qualified Holder who does not provide information reasonably requested
          by the Company in connection with the Shelf Registration Statement.
          The Company may, at its option, include in such Shelf Registration
          Statement shares held by any shareholder other than the Qualified
          Holders having rights similar to those contained in this Section
          2.1(a).

               (ii) The Company agrees to use its best efforts to keep the Shelf
          Registration Statement continuously effective for a period of three
          years following the date on which such Shelf Registration Statement is
          initially declared effective or such shorter period which will
          terminate when all of the Registrable Securities covered by the Shelf
          Registration Statement have been sold pursuant to the Shelf
          Registration Statement.  The Company further agrees, if necessary, to
          supplement or amend the Shelf Registration Statement, if required by
          the rules, regulations or instructions applicable to the registration
          form used by the Company for such Shelf Registration Statement or by
          the Securities Act or by any other rules and regulations thereunder
          for shelf registration.


                                      -6-
<PAGE>
 
               (iii)  On one occasion, the Majority Holders of the Registrable
          Securities covered by a Shelf Registration Statement may elect to have
          such Registrable Securities sold in an Underwritten Offering.  In such
          event, the Company shall be entitled to engage an investment banking
          firm selected by the Company to serve as Underwriter.

          (b)  Piggy-back Registration.
               ----------------------- 

               (i) If the Company at any time prior to the third anniversary of
          the Commencement Date proposes to register any of its securities for
          an Underwritten Offering under the Securities Act (other than pursuant
          to a Shelf Registration), whether or not for sale for its own account,
          and if the registration form proposed to be used may be used for the
          registration of Registrable Securities, the Company will each such
          time give prompt written notice to all Qualified Holders of its
          intention to do so.  Upon the written request of any such Qualified
          Holder made within 30 days after the receipt of any such notice (which
          request shall specify the Registrable Securities intended to be
          disposed of by such Qualified Holder), the Company will use its best
          efforts to cause all such Registrable Securities as to which Qualified
          Holders requested registration to be registered under the Securities
          Act (with the securities which the Company at the time proposes to
          register), so as to permit the sale or other disposition by such
          Qualified Holders of such Registrable Securities.

               (ii) No registration effected pursuant to this Section 2.1(b)
          shall be deemed to have been effected pursuant to Section 2.1(a)
          hereof.

               (iii)  Notwithstanding anything to the contrary in this Section
          2.1(b), the Company shall have the right to discontinue any Piggy-back
          Registration at any time prior to the effective date of such Piggy-
          back Registration if the registration of other securities giving rise
          to such Piggy-back Registration is discontinued; but no such
          discontinuation shall preclude an immediate or subsequent request for
          a Shelf Registration.

          (c) Registration Procedures.  If the Company is required by the
              -----------------------                                    
     provisions of this Section 2.1 to use its best efforts to effect or cause
     the registration of any Registrable Securities under the Securities Act as
     provided in this Section, the Company will, as expeditiously as possible:

               (i) prepare and file with the SEC a Registration Statement with
          respect to such Registrable Securities and use its best efforts to
          cause such registration statement to become and remain effective
          during the Applicable Period; in the case of a Shelf Registration
          Statement, such Registration Statement shall be (A) reasonably
          acceptable to special counsel for the

                                      -7-
<PAGE>
 
          Qualified Holders and (B) available for the sale of Registrable
          Securities in accordance with the intended method or methods of
          distribution of the selling Qualified Holders (subject to the
          limitation set forth in Section 2.1(a)(iii) hereof);

               (ii) prepare and file with the SEC such amendments and
          supplements to such Registration Statement as may be necessary to keep
          such Registration Statement effective for the Applicable Period and to
          comply with the provisions of the Securities Act with respect to the
          sale or other disposition of all securities covered by such
          Registration Statement during the Applicable Period in accordance with
          the intended methods of disposition by the seller or sellers thereof
          set forth in such Registration Statement;

               (iii)  furnish to each seller of such Registrable Securities and,
          in the case of an Underwritten Offering, each Underwriter of the
          securities being sold by such seller, such number of copies of such
          Registration Statement, such number of copies of the Prospectus
          included in such Registration Statement and such other documents as
          such seller and Underwriter may reasonably request in order to
          facilitate the public sale or other disposition of the Registrable
          Securities owned by such seller (including any Prospectus amended or
          supplemented as set forth in Section 2.1(c)(vi));

               (iv) use its best efforts to register or qualify such Registrable
          Securities covered by such Registration Statement under such other
          securities or blue sky laws of such jurisdictions as any seller and
          each Underwriter of the securities being sold by such seller shall
          reasonably request, and do any and all other acts and things which may
          be necessary or advisable to enable such seller and underwriter to
          consummate the disposition in such jurisdictions of such Registrable
          Securities owned by such seller; provided, the Company shall not for
          any such purpose be required to (A) qualify generally to do business
          as a foreign corporation in any jurisdiction wherein it would not but
          for the requirements of this Section 2.1(c)(iv) be obligated to be
          qualified, (B) subject itself to taxation in any such jurisdiction,
          (C) to consent to general service of process in any such
          jurisdictions, or (D) register or qualify such Registrable Securities
          in more than ten states;

               (v) use its best efforts to cause such Registrable Securities
          covered by such registration statement to be registered with or
          approved by such other governmental agencies or authorities as may be
          necessary to enable the seller or sellers thereof to consummate the
          disposition of such Registrable Securities;

               (vi) notify each seller of any such Registrable Securities
          covered by such Registration Statement (i) of the issuance by the SEC
          or any state

                                      -8-
<PAGE>
 
          securities authority of any stop order suspending the effectiveness of
          such Registration Statement or the initiation of any proceedings for
          that purpose, (ii) of receipt of notification with respect to the
          suspension of the qualification of the Registrable Securities for
          offer or sale in any jurisdiction or the initiation of any proceeding
          for such purpose, (iii) at any time when a Prospectus relating thereto
          is required to be delivered under the Securities Act, of the Company's
          becoming aware that 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 then existing (other than
          a fact relating to such seller), and promptly use its best efforts to
          prepare a Prospectus supplemented or amended so that, as thereafter
          delivered to the purchasers of such Registrable 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 then existing;

               (vii)  otherwise use its best efforts to comply with federal and
          state laws and all applicable rules and regulations of the SEC, and
          make available to its security holders, as soon as reasonably
          practicable, an earnings statement which shall satisfy the provisions
          of Section 11(a) of the Securities Act;

               (viii)  use its best efforts (A) to cause all such Registrable
          Securities covered by such Registration Statement to be listed on each
          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 (B) 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 11Aa2-1 under the Exchange Act or, failing
          that, to 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 National Association of Securities
          Dealers;

               (ix) provide a transfer agent and registrar for all such
          Registrable Securities covered by such registration statement not
          later than the effective date of such registration statement;

               (x) in the case of an Underwritten Offering, enter into an
          underwriting agreement in customary form and take such other actions
          as Majority Holders shall reasonably request in order to expedite or
          facilitate the disposition of such Registrable Securities;


                                      -9-
<PAGE>
 
               (xi) in the case of an Underwritten Offering, use its best
          efforts to obtain an opinion from the Company's counsel and a "cold
          comfort" letter from the Company's independent public accountants in
          customary form and covering such matters of the type customarily
          covered by such opinions and "cold comfort" letters;

               (xii)  make available for inspection by any seller of such
          Registrable Securities covered by such Registration Statement, by any
          Underwriter participating in any disposition to be effected pursuant
          to such Registration Statement and by any attorney, accountant or
          other agent retained by any such seller or any such Underwriter, all
          pertinent financial and other records, pertinent corporate documents
          and properties of the Company, and cause all of the Company's
          officers, directors and employees to supply all information reasonably
          requested by any such seller, underwriter, attorney, accountant or
          agent in connection with such registration statement; provided,
          however, that all such persons shall agree to standard confidentiality
          provisions regarding all such records, documents and information; and

               (xiii)  permit any holder of Registrable Securities which holder,
          in the sole and exclusive judgment, exercised in good faith, of such
          holder, might be deemed to be a controlling person of the Company, to
          participate in the preparation of such registration or comparable
          statement.

     Each Qualified Holder shall be deemed to have agreed by including
     Registrable Securities in a Registration Statement that upon receipt of any
     notice from the Company of the happening of any event of the kind described
     in Section 2.1(c)(vi) hereof, such Qualified Holder will forthwith
     discontinue such Qualified Holder's disposition of Registrable Securities
     pursuant to the Registration Statement covering such Registrable Securities
     until such Qualified Holder's receipt of the copies of the supplemented or
     amended prospectus contemplated by Section 2.1(c)(vi) hereof and, if so
     directed by the Company, will deliver to the Company (at the Company's
     expense) all copies, other than permanent file copies, then in such
     Qualified Holder's possession of the Prospectus covering such Registrable
     Securities current at the time of receipt of such notice.  In the event the
     Company shall give any such notice, the Applicable Period shall be extended
     by the number of days during the period from and including the date of the
     giving of such notice to and including the date when each seller of any
     Registrable Securities covered by such registration statement shall have
     received the copies of the supplemented or amended prospectus contemplated
     by Section 2.1(c)(vi) hereof.

          If any Registration Statement, Prospectus or comparable statement
     refers to any holder by name or otherwise as the holder of any securities
     of the Company, then (whether or not, in the sole and exclusive judgment,
     exercised in good faith, of such holder, such holder is or might be deemed
     to be a controlling person of the Company)


                                     -10-
<PAGE>
 
     such holder shall have the right to require (i) the insertion therein of
     language, in form and substance reasonably satisfactory to such holder and
     presented to the Company in writing, to the effect that the holding of such
     holder of such securities is not to be construed as a recommendation by
     such holder of the investment quality of the Company's securities covered
     thereby and that such holding does not imply that such holder will assist
     in meeting any future financial requirements of the Company, or (ii) in the
     event that such reference to such holder by name or otherwise is not
     required by the Securities Act or any similar federal or state statute then
     in force, the deletion of the reference to such holder.  Each seller shall
     provide to the Company in writing information concerning itself required by
     law to be included in any Registration Statement registering shares held by
     such seller.

          (d) Registration Expenses.  The Company shall, whether or not any
              ---------------------                                        
     Shelf Registration or Piggy-back Registration shall become effective, pay
     all expenses incident to its performance of or compliance with this Section
     in connection with a Shelf Registration or Piggy-back Registration,
     including without limitation all registration and filing fees, fees and
     expenses of compliance with securities or blue sky laws (subject to the
     limitation set forth in Section 2.1(c)(iv) hereof), printing expenses,
     messenger and delivery expenses, fees and disbursements of counsel for the
     Company and all independent public accountants (including the expenses of
     any audit and/or "cold comfort" letter) and other persons retained by the
     Company and reasonable fees and disbursements of one counsel or firm of
     counsel chosen by the Majority Holders, and any fees and disbursements of
     underwriters customarily paid by issuers or sellers of securities
     (excluding underwriting commissions and discounts).  In all cases, any
     allocation of Company personnel or other general overhead expenses of the
     Company or other expenses for the preparation of financial statements or
     other data normally prepared by the Company in the ordinary course of its
     business shall be borne by the Company.

          (e) Indemnification and Contribution.  The Company hereby indemnifies,
              --------------------------------                                  
     to the extent permitted by law, each Qualified Holder, its officers and
     directors, if any, and each Person, if any, who controls such Qualified
     Holder 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 (as
     amended or supplemented if the Company shall have furnished any amendments
     or supplements thereto) 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
     respecting such Qualified Holder furnished in writing to the Company by
     such Qualified Holder expressly for use therein.  If the offering pursuant
     to any


                                     -11-
<PAGE>
 
     Registration Statement provided for under this Section is made through
     Underwriters, the Company agrees to enter into an underwriting agreement in
     customary form with such Underwriters and 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,
     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 (as amended or supplemented if the Company shall have
     furnished any amendments or supplements thereto) 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 respecting such Underwriters or the participating Qualified
     Holders furnished in writing to the Company by such Underwriters or the
     participating Qualified Holders expressly for use therein.  In connection
     with any Registration Statement with respect to Registrable Securities held
     by a Qualified Holder, each such Qualified Holder will furnish to the
     Company in writing such information respecting such Qualified Holder as
     shall be reasonably requested by the Company for use in any such
     Registration Statement or Prospectus and will indemnify, to the extent
     permitted by 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 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 Qualified Holder expressly for use therein.  If the
     offering pursuant to any such Registration Statement is made through
     Underwriters, each such Qualified Holder agrees to enter into an
     underwriting agreement in customary form with such Underwriters, and 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 indemnification by such Qualified Holder of the
     Company.  Any Person entitled to indemnification under the provisions of
     this Section 2.1(e) shall (i) give prompt notice to the indemnifying party
     of any claim with respect to which it seeks indemnification and (ii) unless
     in such indemnified party's reasonable judgment a conflict of interest
     between such indemnified and indemnifying parties may exist 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


                                     -12-
<PAGE>
 
     such indemnifying party shall not be subject to any liability for any such
     settlement made without its consent (which consent shall not be
     unreasonably withheld); and any underwriting agreement entered into with
     respect to any Registration Statement provided for under this Section 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 in the reasonable judgment of any such
     indemnified party a conflict of interest may exist 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 a participating Qualified Holder, its
     officers, directors or any Person, if any, who controls such Qualified
     Holder as aforesaid, and shall survive the transfer of such securities by
     such Qualified Holder.

     If for any reason the foregoing indemnity is unavailable, or is
     insufficient to hold harmless an indemnified party, then the indemnifying
     party shall contribute to the amount paid or payable by the indemnified
     party as a result of such losses, claims, damages, liabilities or expenses
     (x) in such proportion as is appropriate to reflect the relative benefits
     received by the indemnifying party on the one hand and the indemnified
     party on the other or (y) if the allocation provided by clause (x) above is
     not permitted by applicable law or provides a lesser sum to the indemnified
     party than the amount hereinafter calculated, in such proportion as is
     appropriate to reflect not only the relative benefits received by the
     indemnifying party on the one hand and the indemnified party on the other
     but also the relative fault of the indemnifying party and the indemnified
     party as well as any other relevant equitable considerations.
     Contributions required to be made by an Underwriter, if any, shall be
     governed by the terms of the underwriting agreement.  Notwithstanding the
     foregoing, 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.

          (f) Certain Limitations on Registration Rights.
              ------------------------------------------ 

               (i) In the case of an Underwritten Offering under a Shelf
          Registration, if the Majority Holders determine to enter into an
          underwriting agreement in connection therewith, or, in the case of a
          Piggy-back Registration, if the Company or holders of securities
          initially requesting or demanding such registration have determined to
          enter into an underwriting agreement in connection therewith, all
          Registrable Securities to be included in such registration shall be
          subject to such underwriting agreement, and no Person may participate
          in such registration unless such Person agrees to sell such Person's
          securities on the basis provided in the underwriting arrangements
          approved by the Company or such holders and completes and/or


                                     -13-
<PAGE>
 
          executes all questionnaires, powers of attorney, indemnities,
          underwriting agreements and other reasonable documents which must be
          executed under the terms of such underwriting arrangements.

               (ii) Notwithstanding anything to the contrary in this Section
          2.1, if the Company shall previously have received a request for
          registration under this or any other registration rights agreement,
          and if such previous registrations shall not have been withdrawn or
          abandoned, the Company will not effect any registration of any of its
          securities under the Securities Act (other than a registration on Form
          S-4 or S-8 (or any similar form) or other publicly registered offering
          pursuant to the Securities Act pertaining to the issuance of
          securities under any benefit plan, employee compensation plan, or
          employee or director stock purchase plan or in connection with an
          offer of securities solely to existing security holders) whether or
          not for sale for its own account, until a period of three months shall
          have elapsed from the effective date of such previous registration;
          and the Company shall so provide in any registration rights agreements
          hereafter entered into with respect to any of its securities.

          (g) Allocation of Securities Included in Registration Statement.  In
              -----------------------------------------------------------     
     the case of an Underwritten Offering, if the Company's managing Underwriter
     shall advise the Company and the Qualified Holders in writing that the
     inclusion in any registration pursuant to this Section of some or all of
     the Registrable Securities sought to be registered by the holders
     requesting such registration creates a substantial risk that the proceeds
     or price per unit the Sellers (as defined below) will derive from such
     registration will be reduced or that the number of securities to be
     registered (including those sought to be registered at the instance of the
     Company and any other party entitled to participate in such registration as
     well as those sought to be registered by the Qualified Holders) is too
     large a number to be reasonably sold, then the number of Registrable
     Securities sought to be registered by each Seller shall be reduced pro rata
     in proportion to the number of securities sought to be registered by all
     Sellers to the extent necessary to reduce the number of securities to be
     registered to the number recommended by the managing underwriter.

          For purposes of this Section 2.1(g) the term "Seller" shall mean and
     include the Company and each holder of securities (including, but not
     limited to, Registrable Securities) entitled to participate in the subject
     registration.

          (h) Limitations on Sale or Distribution of Other Securities.  Each
              -------------------------------------------------------       
     holder of Registrable Securities shall be deemed to have agreed by the
     inclusion of Registrable Securities in a Registration Statement not to
     effect any public sale or distribution, including (if requested by the
     Underwriter) any sale pursuant to Rule 144 under the Securities Act, of any
     Registrable Securities, and to use such holder's best efforts not to effect
     any public sale or distribution of any other equity security of the Company


                                     -14-
<PAGE>
 
     or of any security convertible into or exchangeable or exercisable for any
     equity security of the Company (other than as part of such underwritten
     public offering) within 7 days before or 90 days (or such other period to
     which the Underwriters of such offering may consent) after the effective
     date of any Registration Statement filed by the Company pursuant to this
     Article II or other agreement providing for registration rights.

          2.2  Rule 144.  If the Company shall have filed a registration
               --------                                                 
statement pursuant to the requirements of Section 12 of the Exchange Act or a
Registration Statement pursuant to the requirements of the Securities Act, the
Company covenants that it will timely file the reports required to be filed by
it under the Securities Act or the Exchange Act (including but not limited to
the reports under Sections 13 and 15(d) of the Exchange Act referred to in
subparagraph (c)(l) of Rule 144 adopted by the SEC under the Securities Act) and
the rules and regulations adopted by the SEC thereunder (or, if the Company is
not required to file such reports, will, upon the request of any Qualified
Holder, make publicly available such information), and will take such further
action as any Qualified Holder may reasonably request, all to the extent
required from time to time to enable such Qualified Holder to sell Registrable
Securities without registration under the Securities Act within the limitation
of the exemptions provided by (i) Rule 144 under the Securities Act, as such
Rule may be amended from time to time, or (ii) any similar rule or regulation
hereafter adopted by the SEC.  Upon the request of any Qualified Holder, the
Company will deliver to such Qualified Holder a written statement as to whether
it has complied with such requirements.


                                  ARTICLE III

                                 MISCELLANEOUS

          3.1  Amendments and Waivers.  The provisions of this Agreement,
               ----------------------                                    
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given unless the Company has obtained the written consent of the
Majority Holders; provided, however, that no amendment, modification or
                  --------  -------                                    
supplement or waiver or consent to the departure with respect to the provisions
of Sections 2.1(a) or 2.1(e) hereof shall be effective as against any Holder of
Registrable Securities unless consented to in writing by such Holder of
Registrable Securities.

          3.2  Successors, Assigns and Transferees.  This Agreement shall be
               -----------------------------------                          
binding upon and shall inure to the benefit of the parties hereto and their
respective representatives, administrators, heirs, successors and assigns, as
applicable, including, without limitation and without the need for an express
assignment, subsequent Qualified Holders.  If any successor, assignee or
transferee of any Qualified Holder shall acquire Registrable Securities, in any
manner, whether by operation of law or otherwise, such Registrable Securities
shall be held subject to all of the terms of this Agreement, and by taking and
holding such Registrable


                                     -15-
<PAGE>
 
Securities such Person shall be entitled to receive the benefits hereof and
shall be conclusively deemed to have agreed to be bound by all of the terms and
provisions hereof.

          3.3  Notices.  All notices and other communications provided for
               -------                                                    
hereunder shall be in writing and shall be sent by first class mail, telex,
telecopier or hand delivery:

          if to the Company, to:

               Allin Communications Corporation
               300 Greentree Commons
               381 Mansfield Avenue
               Pittsburgh, PA  15220
               Attention: Richard W. Talarico
               FAX: (708) 377-0907

          if to a Qualified Holder, to:

               the most recent address of such Qualified Holder on the books of
               the Company

     All such notices and communications shall be deemed to have been given or
     made (i) when delivered by hand, (ii) two business days after being
     deposited in the mail, postage prepaid, (iii) when telexed, answer-back
     received or (iv) when telecopied, receipt acknowledged.

          3.4  Descriptive Headings.  The headings in this Agreement are for
               --------------------                                         
convenience of reference only and shall not limit or otherwise affect the
meaning of terms contained herein.

          3.5  Severability.  In the event that any one or more of the
               ------------                                           
provisions, paragraphs, words, clauses, phrases or sentences contained herein,
or the application thereof in any circumstances, is held invalid, illegal or
unenforceable in any respect for any reason, the validity, legality and
enforceability of such provision, paragraph, word, clause, phrase or sentence in
every other respect and of the remaining provisions, paragraphs, words, clauses,
phrases or sentences hereof shall not be in any way impaired, it being intended
that all rights, powers and privileges of the parties hereto shall be
enforceable to the fullest extent permitted by law.

          3.6  Counterparts.  This Agreement may be executed in two or more
               ------------                                                
counterparts, each of which shall be deemed an original, but all of which shall
constitute one and the same instrument, and it shall not be necessary in making
proof of this Agreement to produce or account for more than one such
counterpart.


                                     -16-
<PAGE>
 
          3.7  Governing Law.  This Agreement shall be governed by and construed
               -------------                                                    
and enforced in accordance with the laws of the State of Delaware, without
regard to the conflicts of laws rules thereof.



                        [signatures appear on next page]


                                     -17-
<PAGE>
 
          IN WITNESS WHEREOF, each of the undersigned has executed this
Agreement or caused this Agreement to be executed on its behalf as of the date
first written above.

                              ALLIN COMMUNICATIONS CORPORATION

                              By:
                                 -------------------------------
                              Title:
                                    ----------------------------

                              STOCKHOLDERS


                              ----------------------------------
                              Henry Posner, Jr.


                              ----------------------------------
                              Thomas D. Wright


                              ----------------------------------
                              Terence M. Graunke


                              ----------------------------------
                              James C. Roddey


                              ----------------------------------
                              Richard W. Talarico


                              ----------------------------------
                              Brian K. Blair


                              ----------------------------------
                              R. Daniel Foreman


                              ----------------------------------
                              Thomas J. Wiegand


(Signatures continued on next page)


                                     -18-
<PAGE>
 
(Signatures continued from previous page)



                              ----------------------------------
                              Larry R. Hamilton


                              ----------------------------------
                              William C. Kavan


                              ----------------------------------
                              Mark Kottler


                              ----------------------------------
                              David F. Gould


                              ----------------------------------
                              Christina Hopper


                              ----------------------------------
                              Robin Levine


                                     -19-
<PAGE>
 
                                   EXHIBIT C


                         REGISTRATION RIGHTS AGREEMENT

          This REGISTRATION RIGHTS AGREEMENT (this "Agreement") is made and
entered into as of this 23rd day of July, 1996, by and among ALLIN
COMMUNICATIONS CORPORATION, a Delaware corporation (the "Company"), William C.
Kavan ("Kavan"), Mark Kottler ("Kottler") and those persons whose names appear
on the signature page hereof (collectively, the "Subscribers," and collectively
with Kavan and Kottler, the "Preferred Holders").

                              W I T N E S S E T H:
                              - - - - - - - - - - 

     WHEREAS, concurrently with the execution of this Agreement, Subscribers
have agreed to purchase from the Company, and the Company has agreed to sell and
issue to Subscribers, shares of Series A Convertible Preferred Stock, par value
$100 per share, of the Company (the "Convertible Preferred Stock"); and

          WHEREAS, the Company has the right to convert certain loans made by
Kavan and Kottler in the aggregate principal amount of $1,500,000 and, with
respect to which, the Company is a co-obligor, into shares of Convertible
Preferred Stock; and

     WHEREAS, the Convertible Preferred Stock will be issued to the Preferred
Holders without registration under the Securities Act of 1933, as amended, and
applicable state securities laws, and the Company and the Preferred Holders
desire to provide hereunder for compliance therewith and for the possible
registration of the shares of common stock, par value $0.01 per share, of the
Company (the "Common Stock") issuable upon conversion of the Convertible
Preferred Stock.

          NOW, THEREFORE, in consideration of the premises and the mutual
independent covenants contained herein, the parties hereto, intending to be
legally bound hereby, agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

          1.1  Definitions.  As used in this Agreement, the following
               -----------                                           
capitalized terms have the meanings set forth below:
<PAGE>
 
          Applicable Period - In the case of a Shelf Registration Statement, the
          -----------------                                                     
     period referred to in Section 2.1(a)(ii), and in the case of any other
     Registration Statement, nine months or such shorter period as is necessary
     to complete the distribution of the Registrable Securities covered thereby.

          Commencement Date - The last date on which the shares of Convertible
          -----------------                                                   
     Preferred Stock may be converted into Common Stock.

          Conversion Shares - The shares of Common Stock issued to Qualified
          -----------------                                                 
     Holders upon conversion of shares of Convertible Preferred Stock into
     shares of Common Stock and any shares of Common Stock issued as a stock
     dividend or in a stock split or in connection with any other stock
     combination or division in respect of the Conversion Shares issued upon
     such conversion.

          Demand - As defined in Section 2.1(a)(i) hereof.
          ------                                          

          Exchange Act - The Securities Exchange Act of 1934, as amended, or
          ------------                                                      
     similar federal statute then in effect, and a reference to a particular
     section thereof or regulation thereunder shall be deemed to include a
     reference to the comparable section, if any, of, or regulation, if any,
     under, any such similar federal statute.

          Majority Holders - Qualified Holders holding a majority of the
          ----------------                                              
     Registrable Securities included in a Shelf Registration Statement.

          Notice of Demand - As defined in Section 2.1(a)(i) hereof.
          ----------------                                          

          Person - An individual, partnership, joint venture, corporation,
          ------                                                          
     trust, unincorporated organization or government or any department or
     agency thereof.

          Piggy-back Registration - A registration of Conversion Shares pursuant
          -----------------------                                               
     to Section 2.1(b) hereof.

          Qualified Holder - Each Preferred Holder so long as it or he holds any
          ----------------                                                      
     of the Conversion Shares held by it or him on the Commencement Date and
     each Person to whom a Preferred Holder or a Qualified Holder transfers such
     Conversion Shares.

          Prospectus - The prospectus included in a Registration Statement,
          ----------                                                       
     including any preliminary prospectus, and any such Prospectus as amended or
     supplemented by any prospectus supplement with respect to the terms of the
     offering of any portion of the Registrable Securities covered by a
     Registration Statement, and by all other amendments and supplements to such
     Prospectus, including post-effective amendments, and in each case including
     all exhibits thereto and all material incorporated by reference therein.
<PAGE>
 
          Registrable Securities - Any Conversion Shares issued to, and on the
          ----------------------                                              
     Commencement Date held by, a Qualified Holder.  As to any Registrable
     Securities, once issued such securities shall cease to be Registrable
     Securities when (i) 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 or, if earlier, when the Applicable Period shall
     have expired with respect to such securities; (ii) they shall have been
     distributed to the public pursuant to Rule 144 (or any successor provision)
     under the Securities Act; (iii) new certificates for them not bearing a
     legend restricting further transfer shall have been delivered by the
     Company and subsequent disposition of them shall not require registration
     or qualification of them under the Securities Act or any similar state law
     then in force; or (iv) they shall have ceased to be outstanding.

          Registration Statement - The Shelf Registration Statement, any
          ----------------------                                        
     registration statement registering shares held by Qualified Holders
     pursuant to Section 2.1(b) hereof and all amendments and supplements to any
     such Registration Statement, including post-effective amendments, in each
     case including the Prospectus contained therein, all exhibits thereto and
     all material incorporated by reference therein.

          SEC - The Securities and Exchange Commission.
          ---                                          

          Securities Act - The Securities Act of 1933, as amended, or similar
          --------------                                                     
     federal statute then in effect, and a reference to a particular section
     thereof or regulation thereunder shall be deemed to include a reference to
     the comparable section, if any, of, or regulation, if any, under, such
     similar federal statute.

          Seller - As defined in Section 2.1(g) hereof.
          ------                                       

          Shelf Registration - A registration required to be effected pursuant
          ------------------                                                  
     to Section 2.1(a).

          Shelf Registration Statement - A "shelf" registration statement of the
          ----------------------------                                          
     Company pursuant to the provisions of Section 2.1(a) of this Agreement
     which covers Registrable Securities and is filed on Form S-3 under Rule 415
     under the Securities Act, or any similar rule that may be adopted by the
     SEC, and all amendments and supplements to such registration statement,
     including post-effective amendments, in each case including the Prospectus
     contained therein, all exhibits thereto and all material incorporated by
     reference therein.

          Underwriter - A person who acts as an underwriter with respect to any
          -----------                                                          
     registration of securities pursuant to this Agreement.

          Underwritten Offering - A sale of securities of the Company to an
          ---------------------                                            
     Underwriter or Underwriters for reoffering to the public.
<PAGE>
 
                                   ARTICLE II

                              REGISTRATION RIGHTS

          2.1  Registration.
               ------------ 

          (a)  Shelf Registration.
               ------------------ 

               (i) At any time from the Commencement Date until the third
          anniversary of the Commencement Date, one or more Qualified Holders
          holding in the aggregate at least the number of Conversion Shares into
          which 5,000 shares of Convertible Preferred Stock have been converted
          (as adjusted for stock splits, stock dividends, reverse stock splits
          or any other combination or division of the Conversion Shares) will be
          entitled to deliver to the Company, on one occasion, a written notice
          (a "Demand") requesting a Shelf Registration.  Upon receipt of a
          Demand, the Company will deliver to each Qualified Holder a written
          notice (the "Notice of Demand") which shall include a copy of the
          Demand together with a statement to the effect that the Company will
          include all Registrable Securities in a Shelf Registration pursuant to
          this Section 2.1(a) unless the Company receives, by a date specified
          in the Notice of Demand (which shall be no less than 20 days following
          the delivery of such Notice of Demand), a notice from a Qualified
          Holder to exclude all or a portion of such Qualified Holder's
          Registrable Securities from such Shelf Registration.  Following
          receipt of a Demand, the Company shall, as expeditiously as reasonably
          possible, use its best efforts to effect a Shelf Registration of all
          Registrable Securities except those which a Qualified Holder has on a
          timely basis requested to be excluded from such Shelf Registration and
          those of any Qualified Holder who does not provide information
          reasonably requested by the Company in connection with the Shelf
          Registration Statement.  The Company may, at its option, include in
          such Shelf Registration Statement shares held by any shareholder other
          than the Qualified Holders having rights similar to those contained in
          this Section 2.1(a).

               (ii) The Company agrees to use its best efforts to keep the Shelf
          Registration Statement continuously effective for a period of three
          years following the date on which such Shelf Registration Statement is
          initially declared effective or such shorter period which will
          terminate when all of the Registrable Securities covered by the Shelf
          Registration Statement have been sold pursuant to the Shelf
          Registration Statement.  The Company further agrees, if necessary, to
          supplement or amend the Shelf Registration Statement, if required by
          the rules, regulations or instructions applicable to the registration
          form used by the Company for such Shelf Registration Statement

                                      -4-
<PAGE>
 
          or by the Securities Act or by any other rules and regulations
          thereunder for shelf registration.

               (iii)  On one occasion, the Majority Holders of the Registrable
          Securities covered by a Shelf Registration Statement may elect to have
          such Registrable Securities sold in an Underwritten Offering.  In such
          event, the Company shall be entitled to engage an investment banking
          firm selected by the Company to serve as Underwriter.

          (b)  Piggy-back Registration.
               ----------------------- 

               (i) If the Company at any time prior to the third anniversary of
          the Commencement Date proposes to register any of its securities for
          an Underwritten Offering under the Securities Act (other than pursuant
          to a Shelf Registration), whether or not for sale for its own account,
          and if the registration form proposed to be used may be used for the
          registration of Registrable Securities, the Company will each such
          time give prompt written notice to all Qualified Holders of its
          intention to do so.  Upon the written request of any such Qualified
          Holder made within 30 days after the receipt of any such notice (which
          request shall specify the Registrable Securities intended to be
          disposed of by such Qualified Holder), the Company will use its best
          efforts to cause all such Registrable Securities as to which Qualified
          Holders requested registration to be registered under the Securities
          Act (with the securities which the Company at the time proposes to
          register), so as to permit the sale or other disposition by such
          Qualified Holders of such Registrable Securities.

               (ii) No registration effected pursuant to this Section 2.1(b)
          shall be deemed to have been effected pursuant to Section 2.1(a)
          hereof.

               (iii)  Notwithstanding anything to the contrary in this Section
          2.1(b), the Company shall have the right to discontinue any Piggy-back
          Registration at any time prior to the effective date of such Piggy-
          back Registration if the registration of other securities giving rise
          to such Piggy-back Registration is discontinued; but no such
          discontinuation shall preclude an immediate or subsequent request for
          a Shelf Registration.

          (c) Registration Procedures.  If the Company is required by the
              -----------------------                                    
     provisions of this Section 2.1 to use its best efforts to effect or cause
     the registration of any Registrable Securities under the Securities Act as
     provided in this Section, the Company will, as expeditiously as possible:

               (i) prepare and file with the SEC a Registration Statement with
          respect to such Registrable Securities and use its best efforts to
          cause such

                                      -5-
<PAGE>
 
          registration statement to become and remain effective during the
          Applicable Period; in the case of a Shelf Registration Statement, such
          Registration Statement shall be (A) reasonably acceptable to special
          counsel for the Qualified Holders and (B) available for the sale of
          Registrable Securities in accordance with the intended method or
          methods of distribution of the selling Qualified Holders (subject to
          the limitation set forth in Section 2.1(a)(iii) hereof);

               (ii) prepare and file with the SEC such amendments and
          supplements to such Registration Statement as may be necessary to keep
          such Registration Statement effective for the Applicable Period and to
          comply with the provisions of the Securities Act with respect to the
          sale or other disposition of all securities covered by such
          Registration Statement during the Applicable Period in accordance with
          the intended methods of disposition by the seller or sellers thereof
          set forth in such Registration Statement;

               (iii)  furnish to each seller of such Registrable Securities and,
          in the case of an Underwritten Offering, each Underwriter of the
          securities being sold by such seller, such number of copies of such
          Registration Statement, such number of copies of the Prospectus
          included in such Registration Statement and such other documents as
          such seller and Underwriter may reasonably request in order to
          facilitate the public sale or other disposition of the Registrable
          Securities owned by such seller (including any Prospectus amended or
          supplemented as set forth in Section 2.1(c)(vi));

               (iv) use its best efforts to register or qualify such Registrable
          Securities covered by such Registration Statement under such other
          securities or blue sky laws of such jurisdictions as any seller and
          each Underwriter of the securities being sold by such seller shall
          reasonably request, and do any and all other acts and things which may
          be necessary or advisable to enable such seller and underwriter to
          consummate the disposition in such jurisdictions of such Registrable
          Securities owned by such seller; provided, the Company shall not for
          any such purpose be required to (A) qualify generally to do business
          as a foreign corporation in any jurisdiction wherein it would not but
          for the requirements of this Section 2.1(c)(iv) be obligated to be
          qualified, (B) subject itself to taxation in any such jurisdiction,
          (C) to consent to general service of process in any such
          jurisdictions, or (D) register or qualify such Registrable Securities
          in more than ten states;

               (v) use its best efforts to cause such Registrable Securities
          covered by such registration statement to be registered with or
          approved by such other governmental agencies or authorities as may be
          necessary to enable the seller or sellers thereof to consummate the
          disposition of such Registrable Securities;

                                      -6-
<PAGE>
 
               (vi) notify each seller of any such Registrable Securities
          covered by such Registration Statement (i) of the issuance by the SEC
          or any state securities authority of any stop order suspending the
          effectiveness of such Registration Statement or the initiation of any
          proceedings for that purpose, (ii) of receipt of notification with
          respect to the suspension of the qualification of the Registrable
          Securities for offer or sale in any jurisdiction or the initiation of
          any proceeding for such purpose, (iii) at any time when a Prospectus
          relating thereto is required to be delivered under the Securities Act,
          of the Company's becoming aware that 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 then existing
          (other than a fact relating to such seller), and promptly use its best
          efforts to prepare a Prospectus supplemented or amended so that, as
          thereafter delivered to the purchasers of such Registrable 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 then existing;

               (vii)  otherwise use its best efforts to comply with federal and
          state laws and all applicable rules and regulations of the SEC, and
          make available to its security holders, as soon as reasonably
          practicable, an earnings statement which shall satisfy the provisions
          of Section 11(a) of the Securities Act;

               (viii)  use its best efforts (A) to cause all such Registrable
          Securities covered by such Registration Statement to be listed on each
          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 (B) 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 11Aa2-1 under the Exchange Act or, failing
          that, to 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 National Association of Securities
          Dealers;

               (ix) provide a transfer agent and registrar for all such
          Registrable Securities covered by such registration statement not
          later than the effective date of such registration statement;

               (x) in the case of an Underwritten Offering, enter into an
          underwriting agreement in customary form and take such other actions
          as

                                      -7-
<PAGE>
 
          Majority Holders shall reasonably request in order to expedite or
          facilitate the disposition of such Registrable Securities;

               (xi) in the case of an Underwritten Offering, use its best
          efforts to obtain an opinion from the Company's counsel and a "cold
          comfort" letter from the Company's independent public accountants in
          customary form and covering such matters of the type customarily
          covered by such opinions and "cold comfort" letters;

               (xii)  make available for inspection by any seller of such
          Registrable Securities covered by such Registration Statement, by any
          Underwriter participating in any disposition to be effected pursuant
          to such Registration Statement and by any attorney, accountant or
          other agent retained by any such seller or any such Underwriter, all
          pertinent financial and other records, pertinent corporate documents
          and properties of the Company, and cause all of the Company's
          officers, directors and employees to supply all information reasonably
          requested by any such seller, underwriter, attorney, accountant or
          agent in connection with such registration statement; provided,
          however, that all such persons shall agree to standard confidentiality
          provisions regarding all such records, documents and information; and

               (xiii)  permit any holder of Registrable Securities which holder,
          in the sole and exclusive judgment, exercised in good faith, of such
          holder, might be deemed to be a controlling person of the Company, to
          participate in the preparation of such registration or comparable
          statement.

     Each Qualified Holder shall be deemed to have agreed by including
     Registrable Securities in a Registration Statement that upon receipt of any
     notice from the Company of the happening of any event of the kind described
     in Section 2.1(c)(vi) hereof, such Qualified Holder will forthwith
     discontinue such Qualified Holder's disposition of Registrable Securities
     pursuant to the Registration Statement covering such Registrable Securities
     until such Qualified Holder's receipt of the copies of the supplemented or
     amended prospectus contemplated by Section 2.1(c)(vi) hereof and, if so
     directed by the Company, will deliver to the Company (at the Company's
     expense) all copies, other than permanent file copies, then in such
     Qualified Holder's possession of the Prospectus covering such Registrable
     Securities current at the time of receipt of such notice.  In the event the
     Company shall give any such notice, the Applicable Period shall be extended
     by the number of days during the period from and including the date of the
     giving of such notice to and including the date when each seller of any
     Registrable Securities covered by such registration statement shall have
     received the copies of the supplemented or amended prospectus contemplated
     by Section 2.1(c)(vi) hereof.


                                      -8-
<PAGE>
 
          If any Registration Statement, Prospectus or comparable statement
     refers to any holder by name or otherwise as the holder of any securities
     of the Company, then (whether or not, in the sole and exclusive judgment,
     exercised in good faith, of such holder, such holder is or might be deemed
     to be a controlling person of the Company) such holder shall have the right
     to require (i) the insertion therein of language, in form and substance
     reasonably satisfactory to such holder and presented to the Company in
     writing, to the effect that the holding of such holder of such securities
     is not to be construed as a recommendation by such holder of the investment
     quality of the Company's securities covered thereby and that such holding
     does not imply that such holder will assist in meeting any future financial
     requirements of the Company, or (ii) in the event that such reference to
     such holder by name or otherwise is not required by the Securities Act or
     any similar federal or state statute then in force, the deletion of the
     reference to such holder.  Each seller shall provide to the Company in
     writing information concerning itself required by law to be included in any
     Registration Statement registering shares held by such seller.

          (d) Registration Expenses.  The Company shall, whether or not any
              ---------------------                                        
     Shelf Registration or Piggy-back Registration shall become effective, pay
     all expenses incident to its performance of or compliance with this Section
     in connection with a Shelf Registration or Piggy-back Registration,
     including without limitation all registration and filing fees, fees and
     expenses of compliance with securities or blue sky laws (subject to the
     limitation set forth in Section 2.1(c)(iv) hereof), printing expenses,
     messenger and delivery expenses, fees and disbursements of counsel for the
     Company and all independent public accountants (including the expenses of
     any audit and/or "cold comfort" letter) and other persons retained by the
     Company and reasonable fees and disbursements of one counsel or firm of
     counsel chosen by the Majority Holders, and any fees and disbursements of
     underwriters customarily paid by issuers or sellers of securities
     (excluding underwriting commissions and discounts).  In all cases, any
     allocation of Company personnel or other general overhead expenses of the
     Company or other expenses for the preparation of financial statements or
     other data normally prepared by the Company in the ordinary course of its
     business shall be borne by the Company.

          (e) Indemnification and Contribution.  The Company hereby indemnifies,
              --------------------------------                                  
     to the extent permitted by law, each Qualified Holder, its officers and
     directors, if any, and each Person, if any, who controls such Qualified
     Holder 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 (as
     amended or supplemented if the Company shall have furnished any amendments
     or supplements thereto) 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

                                      -9-
<PAGE>
 
     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 respecting such Qualified Holder
     furnished in writing to the Company by such Qualified Holder expressly for
     use therein.  If the offering pursuant to any Registration Statement
     provided for under this Section is made through Underwriters, the Company
     agrees to enter into an underwriting agreement in customary form with such
     Underwriters and 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, 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 (as
     amended or supplemented if the Company shall have furnished any amendments
     or supplements thereto) 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
     respecting such Underwriters or the participating Qualified Holders
     furnished in writing to the Company by such Underwriters or the
     participating Qualified Holders expressly for use therein.  In connection
     with any Registration Statement with respect to Registrable Securities held
     by a Qualified Holder, each such Qualified Holder will furnish to the
     Company in writing such information respecting such Qualified Holder as
     shall be reasonably requested by the Company for use in any such
     Registration Statement or Prospectus and will indemnify, to the extent
     permitted by 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 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 Qualified Holder expressly for use therein.  If the
     offering pursuant to any such Registration Statement is made through
     Underwriters, each such Qualified Holder agrees to enter into an
     underwriting agreement in customary form with such Underwriters, and 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 indemnification by such Qualified Holder of the
     Company.  Any Person entitled to indemnification under the provisions of
     this Section 2.1(e) shall (i) give prompt notice to the indemnifying party
     of any claim with respect to which it seeks indemnification and (ii) unless
     in such indemnified party's reasonable judgment a conflict of interest
     between such indemnified and indemnifying parties may exist in respect of
     such claim, permit such

                                     -10-
<PAGE>
 
     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 such settlement made without its consent
     (which consent shall not be unreasonably withheld); and any underwriting
     agreement entered into with respect to any Registration Statement provided
     for under this Section 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 in the reasonable
     judgment of any such indemnified party a conflict of interest may exist
     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 a participating
     Qualified Holder, its officers, directors or any Person, if any, who
     controls such Qualified Holder as aforesaid, and shall survive the transfer
     of such securities by such Qualified Holder.

     If for any reason the foregoing indemnity is unavailable, or is
     insufficient to hold harmless an indemnified party, then the indemnifying
     party shall contribute to the amount paid or payable by the indemnified
     party as a result of such losses, claims, damages, liabilities or expenses
     (x) in such proportion as is appropriate to reflect the relative benefits
     received by the indemnifying party on the one hand and the indemnified
     party on the other or (y) if the allocation provided by clause (x) above is
     not permitted by applicable law or provides a lesser sum to the indemnified
     party than the amount hereinafter calculated, in such proportion as is
     appropriate to reflect not only the relative benefits received by the
     indemnifying party on the one hand and the indemnified party on the other
     but also the relative fault of the indemnifying party and the indemnified
     party as well as any other relevant equitable considerations.
     Contributions required to be made by an Underwriter, if any, shall be
     governed by the terms of the underwriting agreement.  Notwithstanding the
     foregoing, 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.

          (f) Certain Limitations on Registration Rights.
              ------------------------------------------ 

               (i) In the case of an Underwritten Offering under a Shelf
          Registration, if the Majority Holders determine to enter into an
          underwriting agreement in connection therewith, or, in the case of a
          Piggy-back Registration, if the Company or holders of securities
          initially requesting or demanding such registration have determined to
          enter into an underwriting agreement in connection therewith, all
          Registrable Securities to be included in

                                     -11-
<PAGE>
 
          such registration shall be subject to such underwriting agreement, and
          no Person may participate in such registration unless such Person
          agrees to sell such Person's securities on the basis provided in the
          underwriting arrangements approved by the Company or such holders and
          completes and/or executes all questionnaires, powers of attorney,
          indemnities, underwriting agreements and other reasonable documents
          which must be executed under the terms of such underwriting
          arrangements.

               (ii) Notwithstanding anything to the contrary in this Section
          2.1, if the Company shall previously have received a request for
          registration under this or any other registration rights agreement,
          and if such previous registrations shall not have been withdrawn or
          abandoned, the Company will not effect any registration of any of its
          securities under the Securities Act (other than a registration on Form
          S-4 or S-8 (or any similar form) or other publicly registered offering
          pursuant to the Securities Act pertaining to the issuance of
          securities under any benefit plan, employee compensation plan, or
          employee or director stock purchase plan or in connection with an
          offer of securities solely to existing security holders) whether or
          not for sale for its own account, until a period of three months shall
          have elapsed from the effective date of such previous registration;
          and the Company shall so provide in any registration rights agreements
          hereafter entered into with respect to any of its securities.

          (g) Allocation of Securities Included in Registration Statement.  In
              -----------------------------------------------------------     
     the case of an Underwritten Offering, if the Company's managing Underwriter
     shall advise the Company and the Qualified Holders in writing that the
     inclusion in any registration pursuant to this Section of some or all of
     the Registrable Securities sought to be registered by the holders
     requesting such registration creates a substantial risk that the proceeds
     or price per unit the Sellers (as defined below) will derive from such
     registration will be reduced or that the number of securities to be
     registered (including those sought to be registered at the instance of the
     Company and any other party entitled to participate in such registration as
     well as those sought to be registered by the Qualified Holders) is too
     large a number to be reasonably sold, then the number of Registrable
     Securities sought to be registered by each Seller shall be reduced pro rata
     in proportion to the number of securities sought to be registered by all
     Sellers to the extent necessary to reduce the number of securities to be
     registered to the number recommended by the managing underwriter.

          For purposes of this Section 2.1(g) the term "Seller" shall mean and
     include the Company and each holder of securities (including, but not
     limited to, Registrable Securities) entitled to participate in the subject
     registration.

          (h) Limitations on Sale or Distribution of Other Securities.  Each
              -------------------------------------------------------       
     holder of Registrable Securities shall be deemed to have agreed by the
     inclusion of Registrable

                                     -12-
<PAGE>
 
     Securities in a Registration Statement not to effect any public sale or
     distribution, including (if requested by the Underwriter) any sale pursuant
     to Rule 144 under the Securities Act, of any Registrable Securities, and to
     use such holder's best efforts not to effect any public sale or
     distribution of any other equity security of the Company or of any security
     convertible into or exchangeable or exercisable for any equity security of
     the Company (other than as part of such underwritten public offering)
     within 7 days before or 90 days (or such other period to which the
     Underwriters of such offering may consent) after the effective date of any
     Registration Statement filed by the Company pursuant to this Article II or
     other agreement providing for registration rights.

          2.2  Rule 144.  If the Company shall have filed a registration
               --------                                                 
statement pursuant to the requirements of Section 12 of the Exchange Act or a
Registration Statement pursuant to the requirements of the Securities Act, the
Company covenants that it will timely file the reports required to be filed by
it under the Securities Act or the Exchange Act (including but not limited to
the reports under Sections 13 and 15(d) of the Exchange Act referred to in
subparagraph (c)(l) of Rule 144 adopted by the SEC under the Securities Act) and
the rules and regulations adopted by the SEC thereunder (or, if the Company is
not required to file such reports, will, upon the request of any Qualified
Holder, make publicly available such information), and will take such further
action as any Qualified Holder may reasonably request, all to the extent
required from time to time to enable such Qualified Holder to sell Registrable
Securities without registration under the Securities Act within the limitation
of the exemptions provided by (i) Rule 144 under the Securities Act, as such
Rule may be amended from time to time, or (ii) any similar rule or regulation
hereafter adopted by the SEC.  Upon the request of any Qualified Holder, the
Company will deliver to such Qualified Holder a written statement as to whether
it has complied with such requirements.


                                  ARTICLE III

                                 MISCELLANEOUS

          3.1  Amendments and Waivers.  The provisions of this Agreement,
               ----------------------                                    
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given unless the Company has obtained the written consent of the
Majority Holders; provided, however, that no amendment, modification or
                  --------  -------                                    
supplement or waiver or consent to the departure with respect to the provisions
of Sections 2.1(a) or 2.1(e) hereof shall be effective as against any Holder of
Registrable Securities unless consented to in writing by such Holder of
Registrable Securities.

          3.2  Successors, Assigns and Transferees.  This Agreement shall be
               -----------------------------------                          
binding upon and shall inure to the benefit of the parties hereto and their
respective representatives, administrators, heirs, successors and assigns, as
applicable, including, without limitation and


                                     -13-
<PAGE>
 
without the need for an express assignment, subsequent Qualified Holders.  If
any successor, assignee or transferee of any Qualified Holder shall acquire
Registrable Securities, in any manner, whether by operation of law or otherwise,
such Registrable Securities shall be held subject to all of the terms of this
Agreement, and by taking and holding such Registrable Securities such Person
shall be entitled to receive the benefits hereof and shall be conclusively
deemed to have agreed to be bound by all of the terms and provisions hereof.

          3.3  Notices.  All notices and other communications provided for
               -------                                                    
hereunder shall be in writing and shall be sent by first class mail, telex,
telecopier or hand delivery:

          if to the Company, to:

               Allin Communications Corporation
               300 Greentree Commons
               381 Mansfield Avenue
               Pittsburgh, PA  15220
               Attention: Richard W. Talarico
               FAX: (708) 377-0907

          if to a Qualified Holder, to:

               the most recent address of such Qualified Holder on the books of
               the Company

     All such notices and communications shall be deemed to have been given or
     made (i) when delivered by hand, (ii) two business days after being
     deposited in the mail, postage prepaid, (iii) when telexed, answer-back
     received or (iv) when telecopied, receipt acknowledged.

          3.4  Descriptive Headings.  The headings in this Agreement are for
               --------------------                                         
convenience of reference only and shall not limit or otherwise affect the
meaning of terms contained herein.

          3.5  Severability.  In the event that any one or more of the
               ------------                                           
provisions, paragraphs, words, clauses, phrases or sentences contained herein,
or the application thereof in any circumstances, is held invalid, illegal or
unenforceable in any respect for any reason, the validity, legality and
enforceability of such provision, paragraph, word, clause, phrase or sentence in
every other respect and of the remaining provisions, paragraphs, words, clauses,
phrases or sentences hereof shall not be in any way impaired, it being intended
that all rights, powers and privileges of the parties hereto shall be
enforceable to the fullest extent permitted by law.

          3.6  Counterparts.  This Agreement may be executed in two or more
               ------------                                                
counterparts, each of which shall be deemed an original, but all of which shall
constitute one

                                     -14-
<PAGE>
 
and the same instrument, and it shall not be necessary in making proof of this
Agreement to produce or account for more than one such counterpart.

          3.7  Governing Law.  This Agreement shall be governed by and construed
               -------------                                                    
and enforced in accordance with the laws of the State of Delaware, without
regard to the conflicts of laws rules thereof.


                        [signatures appear on next page]


                                     -15-
<PAGE>
 
          IN WITNESS WHEREOF, each of the undersigned has executed this
Agreement or caused this Agreement to be executed on its behalf as of the date
first written above.

                              ALLIN COMMUNICATIONS CORPORATION


                              By:
                                 -------------------------------

                              Title:
                                    ----------------------------
                            


                              ----------------------------------
                              William C. Kavan


                              ----------------------------------
                              Mark Kottler



                              SUBSCRIBERS



                              ----------------------------------
 

                              ----------------------------------


                              ----------------------------------


                              ----------------------------------



                                     -16-


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