PHYSICIAN COMPUTER NETWORK INC /NJ
S-4, 1996-08-09
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
Previous: COLUMBIA HCA HEALTHCARE CORP/, 10-Q, 1996-08-09
Next: MEDICAL ASSET MANAGEMENT INC, 10SB12G/A, 1996-08-09




                                                         Registration No. 333-
================================================================================

                       Securities and Exchange Commission
                             Washington, D.C. 20549
                                  ------------
                                    FORM S-4
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

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

                        PHYSICIAN COMPUTER NETWORK, INC.
             (Exact name of registrant as specified in its charter)

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

           New Jersey                      7373                    22-2485688
       (State or other              (Primary Standard          (I.R.S. Employer
  jurisdiction of Industrial          Classification            Identification
incorporation or organization)         Code Number)                 Number)

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

                                                     John F. Mortell
                                                Executive Vice President &
                                                  Chief Operating Officer
                                              Physician Computer Network, Inc.
     1200 The American Road                        1200 The American Road
Morris Plains,  New Jersey 07950,             Morris  Plains, New Jersey 07950,
       (201)  490-3100                                (201) 490-3100 
  (Address, including zip code,              (Name, address, including zip code,
 and telephone number, including              and telephone  number,  including 
   area code, of  Registrant's                area code, of agent for service)
  principal executive offices)

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

                                   Copies to:

      Jonathan Klein, Esq.                          Lawrence R. Small, Esq.
     Gordon Altman Butowsky                         Paine, Hamblen, Coffin,
      Weitzen Shalov & Wein                             Brooke & Miller
       114 West 47th Street                    717 W. Sprague Avenue, Suite 1200
    New York, New York 10036,                      Spokane, Washington 99204,
         (212) 626-0800                                  (509) 455-6000

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

     Approximate date of commencement of proposed sale to the public: As soon as
practicable  after the  effective  date of this  Registration  Statement and the
effective  time of the merger (the "Merger") of Northwest  Acquisition  Corp., a
wholly-owned  subsidiary  of  Physician  Computer  Network,  Inc.  ("PCN" or the
"Registrant"), with and into Wismer-Martin, Inc. ("Wismer-Martin"), as described
in the Agreement and Plan of Merger, dated June 20, 1996, attached as Annex A to
the  Proxy  Statement  and  Prospectus  forming  a  part  of  this  Registration
Statement.

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

     If the  securities  being  registered  on this  Form are being  offered  in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box.

<TABLE>
<CAPTION>

                                CALCULATION OF REGISTRATION FEE
====================================================================================================
                                              Proposed Maximum    Proposed Maximum
    Title of Each Class of     Amount  to be   Offering Price         Aggregate        Amount of
 Securities to be Registered     Registered       Per Unit         Offering Price   Registration Fee
- ----------------------------------------------------------------------------------------------------
<S>                             <C>                 <C>            <C>                 <C>      
Common Stock,
 par value $.01 ............    1,450,000(1)        N.A.           $6,498,492(2)       $2,241(3)
====================================================================================================

</TABLE>

(1)  The amount to be  registered  hereunder  has been  determined  based on the
     maximum  number of shares of PCN  Common  Stock,  par value  $.01  ("Common
     Stock") issuable in the Merger,  assuming for purposes of this Registration
     Statement  only,  the  exercise  in full of certain  options to purchase or
     acquire  Wismer-Martin Common Stock, par value $.01 ("Wismer-Martin  Common
     Stock"). The exchange ratio of .0562 was calculated by dividing (x) 935,000
     by (y)  16,624,495,  the number of shares of  Wismer-Martin  Common  Stock,
     outstanding  on August 7, 1996,  assuming  the  exercise in full of certain
     currently outstanding options to purchase Wismer-Martin Common Stock.

(2)  Estimated  solely  for the  purpose of  calculating  the  registration  fee
     required by Section  6(b) of the  Securities  Act of 1933,  as amended (the
     "Securities  Act"), and computed  pursuant to Rules 457(f)(1) and (3) under
     the Securities Act, by subtracting (i) $1,980,000 (the amount of cash to be
     paid by the Registrant in connection with the Merger) from (ii) the product
     of (a) $0.51  (the  average  of the bid and asked  prices of  Wismer-Martin
     Common Stock on the Spokane Quotation  System,  Inc. to be cancelled in the
     Merger on  August  7,  1996)  and (b)  16,624,495  the  number of shares of
     Wismer-Martin  Common  Stock  outstanding  on August 7, 1996,  assuming the
     exercise  in full of certain  currently  outstanding  options  to  purchase
     Wismer-Martin Common Stock.

(3)  Pursuant to Rule  457(b) of the  Securities  Act and  Section  14(g) of the
     Securities Exchange Act of 1934, as amended, and Rule 0-11 thereunder,  the
     total registration fee of $2,241 is offset by the filing fee of $2,071 paid
     on June 26, 1996, in connection  with the filing of the  preliminary  proxy
     materials by Wismer-Martin on such date. Accordingly,  an additional fee of
     $170 is  required  to be (and  has  been)  paid  with  the  filing  of this
     Registration Statement.

     The Registrant  hereby amends this  Registration  Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a further  amendment  which  specifically  states  that  this  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the Securities  Act of 1933, as amended,  or until this  Registration  Statement
shall become  effective on such date as the Securities and Exchange  Commission,
acting pursuant to said Section 8(a), may determine.

================================================================================


<PAGE>

                  Cross Reference Sheet Pursuant to Item 501(b)
            of Regulation S-K Showing the Location in the Prospectus
                of the Information Required by Part I of Form S-4


<TABLE>
<CAPTION>

 Item of                                                                           Location or Caption in
Form S-4                                                                       Proxy Statement and Prospectus
- --------                                                                       ------------------------------
<S>                                                                 <C>
A. INFORMATION ABOUT THE TRANSACTION

    1.  Forepart of Registration Statement and
          Outside Front Cover Page of Prospectus.................   Facing Page of the Registration Statement; Outside Front Cover
                                                                      of Proxy Statement and Prospectus

    2.  Inside Front and Outside Back Cover
          Pages of Prospectus....................................   Available Information; Incorporation of Certain Documents By
                                                                      Reference; Table of Contents

    3.  Summary Information, Risk Factors, Ratio of Earnings
          to Fixed Charges and Other Information.................   Summary; Selected Historical and Unaudited Pro Forma Financial
                                                                      Information; Comparison of Shareholder Rights; Comparative
                                                                      Market Price Data

    4.  Terms of the Transaction.................................   Summary; The Merger; The Merger Agreement; Comparison of
                                                                      Shareholder Rights

    5.  Pro Forma Financial Information..........................   Physician Computer Network, Inc. and Wismer-Martin, Inc.
                                                                      Unaudited Pro Forma Condensed Consolidated Financial 
                                                                      Statements

    6.  Material Contacts with the Company Being Acquired........   The Merger-Background of the Merger

    7.  Additional Information Required for Reoffering by
          Persons and Parties Deemed to Be Underwriters..........   Not Applicable

    8.  Interests of Named Experts and Counsel...................   Not Applicable

    9.  Disclosure of Commission Position on Indemnification
          for Securities Act Liabilities.........................   Not Applicable

B. INFORMATION ABOUT THE REGISTRANT

   10.  Information with Respect to S-3 Registrants..............   Available Information; Incorporation of Certain Documents by
                                                                      Reference

   11.  Incorporation of Certain Information by Reference........   Available Information; Incorporation of Certain Documents by
                                                                      Reference

   12.  Information with Respect to S-2 or S-3 Registrants.......   Not Applicable

   13.  Incorporation of Certain Information by Reference........   Not Applicable

   14.  Information with Respect to Registrants
          Other Than S-3 or S-2 Registrants......................   Not Applicable

C. INFORMATION ABOUT THE COMPANY BEING ACQUIRED

   15.  Information with Respect to S-3 Companies................   Not Applicable

   16.  Information with Respect to S-2 or S-3 Companies.........   Not Applicable

   17.  Information with Respect to Companies
          Other Than S-3 or S-2 Companies........................   Available Information; Information Concerning Wismer-Martin.
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

 Item of                                                                           Location or Caption in
Form S-4                                                                       Proxy Statement and Prospectus
- --------                                                                       ------------------------------
<S>                                                                 <C>
D. VOTING AND MANAGEMENT INFORMATION

   18.  Information if Proxies, Consents or
          Authorizations are to be Solicited.....................   Outside Front Cover of Proxy Statement and Prospectus; Available
                                                                      Information; Incorporation of Certain Documents by Reference;
                                                                      Special Meeting; Security Ownership of Certain Persons and
                                                                      Option and Voting Agreements; The Merger -Interests of Certain
                                                                      Persons in the Merger;-- Dissenters' Rights; Information
                                                                      Concerning PCN; Information Concerning Wismer-Martin;
                                                                      Solicitation of Proxies.

   19.  Information if Proxies, Consents or
          Authorizations  are not to be Solicited
          or in an Exchange Offer................................   Not Applicable
</TABLE>


<PAGE>


                               WISMER-MARTIN, INC.
                            12828 N. Newport Highway
                             Mead, Washington 99021



                                                                 August 12, 1996



Dear Shareholder:

     You are cordially  invited to attend a Special  Meeting of  Shareholders of
Wismer-Martin,  Inc.  ("Wismer-Martin")  which will be held at 9:00 a.m.,  local
time, on September 9, 1996, at  Wismer-Martin's  executive  offices,  located at
12828 N. Newport Highway, Mead, Washington 99021.

     At the  Special  Meeting,  you will be asked to  consider  and vote  upon a
proposal  to approve an  Agreement  and Plan of Merger  dated June 20, 1996 (the
"Merger  Agreement"),  by and among  Wismer-Martin,  Physician Computer Network,
Inc. ("PCN") and a wholly-owned subsidiary of PCN ("Merger Sub"). Subject to the
provisions  of the Merger  Agreement,  Merger  Sub will be merged  with and into
Wismer-Martin  (the  "Merger"),  which will result in  Wismer-Martin  becoming a
wholly-owned subsidiary of PCN.

     The  effect of your  approval  of the  Merger  Agreement  will be to enable
Wismer-Martin  to complete  the Merger with PCN.  The Merger is described in the
accompanying  Proxy  Statement and  Prospectus,  which includes a summary of the
terms of the merger and  certain  other  information  relating  to the  proposed
transaction.

     WISMER-MARTIN'S  BOARD OF DIRECTORS BELIEVES THAT THE MERGER IS IN THE BEST
INTERESTS OF WISMER-MARTIN AND ITS SHAREHOLDERS AND UNANIMOUSLY  RECOMMENDS THAT
SHAREHOLDERS VOTE FOR APPROVAL OF THE MERGER AGREEMENT.

     A Notice  of the  Special  Meeting  and a Proxy  Statement  and  Prospectus
containing detailed  information  concerning the merger and related transactions
accompany this letter. I urge you to read this material carefully.

     Your vote is very important.  Please sign, date and mail the enclosed proxy
promptly to ensure that your shares will be represented.

     We look forward to seeing you at the meeting.


                                     Sincerely,


                                     RONALD HOLDEN
                                     Chairman and Chief Executive Officer


<PAGE>



                               WISMER-MARTIN, INC.


                                   ----------


                    NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                          to be held September 9, 1996


                                   ----------


TO THE SHAREHOLDERS OF
  WISMER-MARTIN, INC.:

     You are  cordially  invited  to  attend a  Special  Meeting  (the  "Special
Meeting") of the shareholders of Wismer-Martin,  Inc., a Washington  corporation
("Wismer-Martin"), which will be held at the executive offices of Wismer-Martin,
Inc., 12828 N. Newport Highway, Mead, Washington 99021, on September 9, 1996, at
9:00 a.m., local time, for the following purposes:

          1. To  consider  and vote upon a proposal  to approve a Plan of Merger
     pursuant  to an  Agreement  and Plan of Merger,  dated  June 20,  1996 (the
     "Merger Agreement"),  by and among Physician Computer Network,  Inc., a New
     Jersey  corporation  ("PCN"),  Northwest  Acquisition Corp., a wholly-owned
     subsidiary of PCN ("Merger Sub"), and Wismer-Martin, pursuant to which: (a)
     Merger Sub will merge with and into Wismer-Martin and Wismer-Martin will be
     the surviving corporation and become a wholly-owned  subsidiary of PCN (the
     "Merger") and (b) each share of Wismer-Martin Common Stock, par value $.001
     per  share   ("Wismer-Martin   Common   Stock"),   issued  and  outstanding
     immediately  prior to the  effective  time of the Merger shall be converted
     into the right to receive a specified amount of cash and a specified number
     of shares of PCN's Common  Stock,  par value $.01 per share,  as more fully
     described in the accompanying Proxy Statement and Prospectus.

          2. To transact  such other  business as may  properly  come before the
     Special Meeting or any adjournments thereof.

     Shareholders  of record at the close of business on August 1, 1996, will be
entitled  to notice of and to vote at the  Special  Meeting or any  adjournments
thereof.

     Shareholders  as of the record date are entitled to dissent from the Merger
and to receive  payment of the "fair  value" of their shares if they comply with
certain  procedures  specified  in  Chapter  23B.13 of the  Washington  Business
Corporation  Act ("WBCA").  For a more  complete  discussion  thereof,  see "The
Merger --  Dissenters'  Rights" and the full text of Chapter  23B.13 of the WBCA
which  is  attached  to the  Proxy  Statement  and  Prospectus  as  Annex  B and
incorporated therein by reference.


                                By Order of the Board of Directors



                                Mehdi Moussavi
                                Secretary


Dated: August 12, 1996
Mead, Washington


     The affirmative vote by the holders of two-thirds of the votes  represented
by the outstanding  shares of Wismer-Martin  Common Stock at the Special Meeting
is  necessary  for the  approval  of the  matters to be voted on at the  Special
Meeting. It is important that your shares be represented at the meeting. We hope
you will attend,  but whether or not you intend to be present in person,  please
mark,  sign, date and return the  accompanying  proxy promptly.  A stamped reply
envelope is enclosed for that purpose.


<PAGE>



                        PHYSICIAN COMPUTER NETWORK, INC.
                               WISMER-MARTIN, INC.


                                   ----------


                         PROXY STATEMENT AND PROSPECTUS


     This Proxy Statement and Prospectus  ("Proxy  Statement and Prospectus") is
being  furnished to holders of shares of the common  stock,  par value $.001 per
share  ("Wismer-Martin  Common  Stock"),  of  Wismer-Martin,  Inc., a Washington
corporation ("Wismer-Martin"), in connection with the solicitation of proxies by
the Board of Directors of Wismer-Martin (the "Wismer-Martin Board") for use at a
special  meeting of shareholders  of  Wismer-Martin  to be held at the executive
offices of  Wismer-Martin,  Inc.,  12828 N. Newport  Highway,  Mead,  Washington
99021, on September 9, 1996, at 9:00 a.m.,  local time, and at any  adjournments
thereof (the "Special Meeting"). At the Special Meeting, holders of record as of
August 1, 1996, of Wismer-Martin  Common Stock will be requested to consider and
vote upon a proposal to approve a Plan of Merger (the "Plan of Merger") pursuant
to an  Agreement  and Plan of  Merger,  dated  June 20,  1996,  among  Physician
Computer Network, Inc., a New Jersey corporation ("PCN"),  Northwest Acquisition
Corp., a Washington  corporation  and a wholly-owned  subsidiary of PCN ("Merger
Sub"), and Wismer-Martin (the "Merger Agreement").

     Pursuant  to the  Merger  Agreement,  Merger  Sub will  merge with and into
Wismer-Martin,   the  separate   existence   of  Merger  Sub  will  cease,   and
Wismer-Martin  will be the  surviving  corporation  and  become  a  wholly-owned
subsidiary  of PCN (the  "Merger").  At the  effective  time of the Merger  (the
"Effective  Time"),  each  share  of  Wismer-Martin   Common  Stock  issued  and
outstanding   immediately   prior  to  Effective  Time,  except  those  held  by
shareholders  who validly  perfect  dissenters'  rights under the WBCA,  will be
converted into the right to receive (the "Merger Consideration"):  (i) an amount
in cash (the "Cash  Consideration")  equal to the quotient  obtained by dividing
(x)  $1,980,000  by (y) the  number  of  shares of  Wismer-Martin  Common  Stock
outstanding  immediately prior to the Effective Time (the "Common Share Number")
and (ii) subject to the  adjustments  described  below,  that number (the "Stock
Consideration")  of shares of PCN's Common Stock, par value $.01 per share ("PCN
Common  Stock"),  equal to the quotient  obtained by dividing (x) 935,000 by (y)
the Common Share Number.  Assuming that there are no  adjustments  to the Merger
Consideration,  as described below, and assuming the exercise in full of 300,000
currently outstanding options to purchase Wismer-Martin Common Stock, each share
of Wismer-Martin Common Stock will be convertible into $0.1191 in cash and .0562
shares of PCN Common Stock. No assurances can be made that there will not be any
changes in the foregoing  amount of cash or number of shares of PCN Common Stock
as a  result  of any  one  or  more  of  the  adjustments  described  below.  In
particular,  and in  addition  to the  adjustments  described  in the  following
paragraph,  in the event that the Market Price (as defined  below) of PCN Common
Stock on the  third  business  day prior to the  Effective  Time is less than or
equal  to  $9.00  per  share,  then,  at  PCN's  option,  in  lieu  of the  Cash
Consideration   and   Stock   Consideration   described   above,   the   "Merger
Consideration"  shall be an  amount in cash  equal to (the  "Cash  Option")  (x)
$14,000,000  divided  by (y) the  Common  Share  Number,  or $0.8421 in cash per
share,  assuming  the  exercise  of  300,000  currently  outstanding  options to
purchase  Wismer-Martin  Common  Stock and that the  Market  Price of PCN Common
Stock was $9.00 per share or less.

     The  Merger  Agreement  provides  that the Stock  Consideration  (described
above) will be adjusted under the following circumstances:  (i) if the aggregate
Market  Price of the Stock  Consideration  is less than  $9,350,000  ($10.00 per
share) on the third business day immediately  preceding the Effective Time, then
the Stock Consideration shall be increased to equal such number of shares of PCN
Common Stock as has an  aggregate  market  value of  $9,350,000  and (ii) if the
aggregate  Market Price of the Stock  Consideration  is greater than $11,453,750
($12.25 per share) on the third business day immediately preceding the Effective
Time,  then the Stock  Consideration  shall be decreased to equal such number of
shares of PCN Common Stock as has an aggregate market value of $11,453,750.  The
Merger  Agreement  contains an  additional  provision  intended to preserve  the
tax-free  reorganization  treatment of the Merger (so long as the Cash Option is
not  exercised),   such  that  the  receipt  of  the  Stock   Consideration   by
Wismer-Martin  shareholders would be on a tax-free basis, by, based upon certain
assumptions,  limiting the  aggregate  amount of cash to be received by both the
dissenting and  non-dissenting  shareholders of  Wismer-Martin to 20% or less of
the


<PAGE>


aggregate value of the consideration  (both cash and shares of PCN Common Stock)
to be received by both the dissenting  and the  non-dissenting  shareholders  of
Wismer-Martin. This provision may result in adjustments decreasing the aggregate
amount of cash and increasing the aggregate number of shares of PCN Common Stock
to be  received  by the  non-dissenting  shareholders  of  Wismer-Martin  in the
Merger.  This adjustment would be expected to occur only if a significant number
of  shareholders  exercise  dissenters'  rights.  See "The Merger -- Dissenters'
Rights." No assurances can be given that such  adjustment will enable the Merger
to qualify  as a tax-free  reorganization.  See "The  Merger -- Certain  Federal
Income Tax Consequences of the Merger." As used herein, "Market Price" means the
average of the closing  price of a share of PCN Common  Stock as reported on the
NASDAQ Stock Market during the fifteen (15) trading days  immediately  preceding
the date of determination.

     This document also includes and  constitutes the Prospectus of PCN filed as
part of its  Registration  Statement on Form S-4 (together  with all  amendments
thereto,  the  "Registration   Statement")  with  the  Securities  and  Exchange
Commission (the "Commission")  under the Securities Act of 1933, as amended (the
"Securities  Act"),  relating to the shares of PCN Common  Stock to be issued in
the Merger.

     This Proxy Statement and Prospectus and the accompanying  form of proxy are
first being mailed to shareholders of record of Wismer-Martin on or about August
12, 1996.

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

     THE SECURITIES TO WHICH THIS PROXY STATEMENT AND PROSPECTUS RELATE HAVE NOT
BEEN APPROVED OR DISAPPROVED  BY THE  SECURITIES AND EXCHANGE  COMMISSION OR ANY
STATE  SECURITIES  COMMISSION NOR HAS THE SECURITIES AND EXCHANGE  COMMISSION OR
ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE  ACCURACY OR ADEQUACY OF THIS
PROXY STATEMENT AND PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.

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

     The date of this Proxy Statement and Prospectus is August 12, 1996.


                                       ii
<PAGE>


     No  person  is  authorized  to  give  any   information   or  to  make  any
representations  other than those contained or incorporated by reference in this
Proxy  Statement  and  Prospectus,  and if given or made,  such  information  or
representations should not be relied upon as having been authorized.  This Proxy
Statement and Prospectus does not constitute an offer to sell, or a solicitation
of a proxy, in any jurisdiction to or from any person to whom or from whom it is
unlawful to make such offer,  solicitation of an offer or proxy  solicitation in
such  jurisdiction.  Neither the delivery of this Proxy Statement and Prospectus
nor any  distribution  of  securities  pursuant  to  this  Proxy  Statement  and
Prospectus shall, under any circumstances, create any implication that there has
been no change in the information set forth or incorporated  herein by reference
or in the affairs of PCN or Wismer-Martin since the date of this Proxy Statement
and  Prospectus.  All  information  regarding  PCN or Merger  Sub in this  Proxy
Statement and Prospectus has been supplied by PCN, and all information regarding
Wismer-Martin has been supplied by Wismer-Martin.


                              AVAILABLE INFORMATION

     PCN and Wismer-Martin are subject to the informational  requirements of the
Securities  Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in
accordance therewith,  are required to file reports,  proxy statements and other
information with the Securities and Exchange  Commission (the "SEC").  Copies of
such reports, proxy statements and other information can be inspected and copied
at the public reference facilities maintained by the SEC at Room 1024, Judiciary
Plaza,  450 Fifth  Street,  N.W.,  Washington,  D.C.  20549 and at the following
Regional Offices of the SEC: Midwest  Regional  Office,  Citicorp Center,  Suite
1400,  500 West  Madison  Street,  Chicago,  Illinois  60661;  and  Northeastern
Regional  Office,  7 World Trade Center,  13th Floor,  New York, New York 10048.
Copies of such  material  can be  obtained at  prescribed  rates from the Public
Reference Section of the SEC, 450 Fifth Street,  N.W.,  Washington,  D.C. 20549.
PCN  Common  Stock is listed  on the  NASDAQ  National  Market.  Reports,  proxy
statements and other information  concerning PCN may be inspected at the offices
of the National Association of Securities Dealers,  Inc. at 1735 K Street, N.W.,
Washington, D.C. 20006. If the Merger is consummated,  PCN will continue to file
periodic  reports,  proxy statements and other information with the SEC pursuant
to the  Exchange  Act  and  Wismer-Martin  no  longer  will  be  subject  to the
informational and certain other requirements of the Exchange Act.

     PCN has filed with the SEC a  registration  statement on Form S-4 (together
with any amendments thereto, the "Registration  Statement") under the Securities
Act, with respect to the shares of PCN Common Stock to be issued pursuant to the
Merger  Agreement.  This Proxy Statement and Prospectus does not contain all the
information set forth in the Registration  Statement,  certain portions of which
have  been  omitted  pursuant  to the  rules and  regulations  of the SEC.  Such
additional  information  may be  obtained  from the  SEC's  principal  office in
Washington, D.C.



                                       iii
<PAGE>


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     This Proxy  Statement  and  Prospectus  incorporates  certain  documents by
reference which are not presented herein or delivered herewith.  These documents
are available upon request from, in the case of PCN, John F. Mortell, Secretary,
Physician  Computer Network,  Inc., 1200 The American Road,  Morris Plains,  New
Jersey 07950,  telephone number (201) 490-3100 and in the case of Wismer-Martin,
Mehdi Moussavi, Secretary,  Wismer-Martin, Inc., 12828 N. Newport Highway, Mead,
Washington  99021,  telephone  number (509) 466-0396.  In order to ensure timely
delivery of these documents, any request should be made by August 30, 1996.

     PCN and  Wismer-Martin  hereby  undertake to provide  without charge to any
beneficial  owner of Wismer-  Martin  Common  Stock to whom a copy of this Proxy
Statement and Prospectus has been delivered, upon the written or oral request of
any such person, a copy of any and all of the documents  referred to below which
have been or may be  incorporated  herein by  reference,  other than exhibits to
such documents,  unless such exhibits are  specifically  incorporated  herein by
reference.  Requests  for  such  documents  should  be  directed  to the  person
indicated in the immediately preceding paragraph. The following documents, which
have  been  filed  with  the  SEC  pursuant  to the  Exchange  Act,  are  hereby
incorporated herein by reference:

     (a)  PCN's Annual Report on Form 10-K for the year ended December 31, 1995;

     (b)  PCN's  Quarterly  Report on Form 10-Q for the period  ended  March 31,
          1996;

     (c)  PCN's  Current  Reports on Form 8-K dated  June 25,  1996 and July 10,
          1996;

     (d)  PCN's Current Report on Form 8-K/A dated August 7, 1996;

     (e)  Wismer-Martin's  Annual  Report on Form 10-KSB for the year ended June
          30, 1995; and

     (f)  Wismer-Martin's Quarterly Reports on Form 10-QSB for the periods ended
          September 30, 1995, December 31, 1995 and March 31, 1996.

     All  documents  filed by PCN or  Wismer-Martin  pursuant to Section  13(a),
13(c),  14 or 15(d) of the  Exchange  Act after the date hereof and prior to the
date of the Special Meeting (as such term is defined herein under the caption of
the same name) shall be deemed to be incorporated  herein by reference and to be
a part  hereof  from the  date of  filing  of such  documents.  All  information
appearing in this Proxy Statement and Prospectus or in any document incorporated
herein by reference is not necessarily complete and is qualified in its entirety
by the information and financial statements  (including notes thereto) appearing
in the  documents  incorporated  herein by reference and should be read together
with such information and documents.

     Any  statement  contained  in a  document  incorporated  or  deemed  to  be
incorporated  herein by reference  shall be deemed to be modified or  superseded
for  purposes  of this Proxy  Statement  and  Prospectus  to the  extent  that a
statement  contained herein or in any other  subsequently filed document that is
deemed to be  incorporated  herein by  reference  modifies  or  supersedes  such
statement.  Any such  statement so modified or  superseded  shall not be deemed,
except  as so  modified  or  superseded,  to  constitute  a part of  this  Proxy
Statement and Prospectus.


                                       iv
<PAGE>


                                TABLE OF CONTENTS


AVAILABLE INFORMATION...................................................   iii

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE.........................    iv

SUMMARY ................................................................     1

SELECTED HISTORICAL AND UNAUDITED PRO FORMA FINANCIAL INFORMATION.......     7

COMPARATIVE MARKET PRICE DATA...........................................    12

RISK FACTORS REGARDING PCN..............................................    13

PROXY STATEMENT AND PROSPECTUS..........................................    17

SPECIAL MEETING.........................................................    17
     Purpose of the Meeting.............................................    17
     Date, Time and Place; Record Date..................................    17
     Voting Rights......................................................    17

SECURITY OWNERSHIP OF CERTAIN PERSONS AND VOTING AGREEMENTS.............    18

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL  STATEMENTS........    19

THE MERGER..............................................................    27
     Background of the Merger...........................................    27
     Recommendations of the Boards of Directors; 
       Effects of and Reasons for the Merger............................    28
     General Description of the Merger..................................    28
     Closing; Effective Time............................................    29
     Exchange of Stock Certificates.....................................    29
     No Fractional Shares...............................................    30
     Interests of Certain Persons in the Merger.........................    30
     Certain Federal Income Tax Consequences of the Merger..............    30
     Federal Securities Law Matters.....................................    32
     Accounting Treatment...............................................    32
     Listing on NASDAQ Stock Market.....................................    33
     Dissenters' Rights.................................................    33

THE MERGER AGREEMENT....................................................    36
     The Merger.........................................................    36
     Representations and Warranties.....................................    37
     Certain Covenants..................................................    37
     Certain Additional Agreements......................................    37
     No Solicitation of Other Transactions..............................    38
     Expenses...........................................................    38
     Conditions to the Merger...........................................    38
     Wismer-Martin Stock Options........................................    39
     Termination........................................................    39
     Amendment and Waiver...............................................    40

INFORMATION CONCERNING PCN..............................................    40

INFORMATION CONCERNING WISMER-MARTIN....................................    41
     Legal Proceedings..................................................    46
     Security Ownership of Certain Beneficial Owners and Management.....    46
     Management's Discussion and Analysis of Results of Operations
     and Financial Condition............................................    47


                                        v
<PAGE>


     Changes in and Disagreements With Accountants on Accounting and 
       Financial Disclosure.............................................    51

COMPARISON OF SHAREHOLDER RIGHTS........................................    52
     General Shareholder Vote Requirements..............................    52
     Size and Classification of the Board of Directors..................    52
     Election of Directors and Director Nomination Procedures...........    52
     Removal of Directors...............................................    52
     Vacancies on the Board of Directors................................    53
     Special Meetings of Shareholders...................................    53
     Shareholder Approval of Mergers and Sales of Assets................    53
     Amendment of Articles and By-Laws..................................    54
     Preemptive Rights..................................................    54
     Payment of Dividends...............................................    54
     Inspection of Books and Records....................................    54
     Indemnification and Limitation of Liability of Officers 
       and Directors....................................................    55

LEGAL OPINION...........................................................    55

EXPERTS.................................................................    55

SOLICITATION OF PROXIES.................................................    55

ANNEX A -- Agreement and Plan of Merger.................................   A-1

ANNEX B -- Chapter 23B.13 of the Washington Business Corporation Act....   B-1



                                       vi
<PAGE>


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

                                     SUMMARY

     The following is a summary of certain  information  contained  elsewhere in
this Proxy Statement and  Prospectus.  Reference is made to, and this summary is
qualified in its entirety by, the detailed  information  appearing  elsewhere in
this  Proxy  Statement  and  Prospectus  or  incorporated  herein by  reference.
Capitalized  terms  used and not  otherwise  defined  in this  summary  have the
meanings given to them  elsewhere  herein.  Shareholders  are urged to read this
Proxy  Statement  and  Prospectus in its  entirety.  Certain of the  information
contained in this summary and elsewhere in this Proxy  Statement and  Prospectus
or  incorporated  herein by  reference  are  forward-looking  statements.  For a
discussion  of  important  factors  that could  cause  actual  results to differ
materially from such  forward-looking  statements,  see "Risk Factors  Regarding
PCN."

The Merger .........................   This  Proxy  Statement and  Prospectus is
                                         being furnished to holders of shares of
                                         the common  stock,  par value $.001 per
                                         share,   of   Wismer-Martin,   Inc.,  a
                                         Washington  corporation,  in connection
                                         with the solicitation of proxies by the
                                         Board of Directors of Wismer-Martin for
                                         use   at   a   special    meeting    of
                                         shareholders  of  Wismer-Martin  to  be
                                         held  at  the   executive   offices  of
                                         Wismer-Martin,    12828   N.    Newport
                                         Highway,  Mead,  Washington  99021,  on
                                         September 9, 1996, at 9:00 a.m.,  local
                                         time and at any  adjournments  thereof.
                                         At  the  Special  Meeting,  holders  of
                                         record  as  of  August  1,   1996,   of
                                         Wismer-Martin   Common  Stock  will  be
                                         requested  to consider  and vote upon a
                                         proposal  to  approve  a Plan of Merger
                                         pursuant  to an  Agreement  and Plan of
                                         Merger  dated  June  20,  1996,   among
                                         Physician Computer Network, Inc., a New
                                         Jersey      corporation,      Northwest
                                         Acquisition    Corp.,    a   Washington
                                         corporation    and    a    wholly-owned
                                         subsidiary of PCN, and Wismer-Martin.

                                         Pursuant   to  the  Merger   Agreement,
                                         Merger  Sub  will  merge  with and into
                                         Wismer-Martin,  the separate  existence
                                         of   Merger   Sub   will   cease,   and
                                         Wismer-Martin  will  be  the  surviving
                                         corporation  and become a  wholly-owned
                                         subsidiary  of PCN (the  "Merger").  At
                                         the  effective  time of the Merger (the
                                         "Effective   Time"),   each   share  of
                                         Wismer-Martin  Common  Stock issued and
                                         outstanding    immediately   prior   to
                                         Effective  Time,  except  those held by
                                         shareholders    who   validly   perfect
                                         dissenters' rights under the WBCA, will
                                         be converted  into the right to receive
                                         (the  "Merger  Consideration"):  (i) an
                                         amount    in    cash     (the     "Cash
                                         Consideration")  equal to the  quotient
                                         obtained by dividing (x)  $1,980,000 by
                                         (y)   the    number    of   shares   of
                                         Wismer-Martin  Common Stock outstanding
                                         immediately prior to the Effective Time
                                         (the  "Common  Share  Number") and (ii)
                                         subject  to the  adjustments  described
                                         below,    that   number   (the   "Stock
                                         Consideration")   of  shares  of  PCN's
                                         Common Stock,  par value $.01 per share
                                         ("PCN  Common  Stock"),  equal  to  the
                                         quotient   obtained  by  dividing   (x)
                                         935,000 by (y) the Common Share Number.
                                         Assuming that there are no  adjustments
                                         to   the   Merger   Consideration,   as
                                         described   below,   and  assuming  the
                                         exercise  in full of 300,000  currently
                                         outstanding    options   to    purchase
                                         Wismer-Martin  Common Stock, each share
                                         of  Wismer-Martin  Common Stock will be
                                         convertible  into  $0.1191  in cash and
                                         .0562  shares of PCN Common  Stock.  No
                                         assurances  can be made that there will
                                         not be  any  changes  in the  foregoing
                                         amount  of cash or  number of shares of
                                         PCN Common Stock as a result of any one
                                         or  more of the  adjustments  described
                                         below.  In particular,  and in addition
                                         to  the  adjustments  described  in the
                                         following paragraph,  in the event that
                                         the Market Price (as defined  below) of
                                         PCN Common Stock on the third  business
                                         day prior to the Effective Time is less
                                         than or equal to $9.00 per share, then,
                                         at  PCN's  option,  in lieu of the Cash
                                         Consideration  and Stock  Consideration
                                         described     above,     the    "Merger
                                         Consideration"  shall be an  amount  in
                                         cash equal to (the "Cash  Option")  (x)
                                         $14,000,000  divided  by (y) the Common
                                         Share  Number,  or  $0.8421 in cash per
                                         share, assuming the exercise in full of
                                         300,000 currently  outstanding  options
                                         to purchase  Wismer-Martin Common Stock
                                         and that the Market Price of PCN Common
                                         Stock was $9.00 per share or less.

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

                                       1
<PAGE>


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

                                       The Merger  Agreement  provides  that the
                                         Stock  Consideration  (described above)
                                         will be  adjusted  under the  following
                                         circumstances:  (i)  if  the  aggregate
                                         Market Price of the Stock Consideration
                                         is less  than  $9,350,000  ($10.00  per
                                         share)  on  the  third   business   day
                                         immediately   preceding  the  Effective
                                         Time,  then  the  Stock   Consideration
                                         shall be increased to equal such number
                                         of shares of PCN Common Stock as has an
                                         aggregate  market  value of  $9,350,000
                                         and (ii) if the aggregate  Market Price
                                         of the Stock  Consideration  is greater
                                         than $11,453,750  ($12.25 per share) on
                                         the  third  business  day   immediately
                                         preceding the Effective  Time, then the
                                         Stock  Consideration shall be decreased
                                         to equal  such  number of shares of PCN
                                         Common Stock as has an aggregate market
                                         value  of   $11,453,750.   The   Merger
                                         Agreement    contains   an   additional
                                         provision   intended  to  preserve  the
                                         tax-free  reorganization  treatment  of
                                         the Merger (so long as the Cash  Option
                                         is  not   exercised),   such  that  the
                                         receipt of the Stock  Consideration  by
                                         Wismer-Martin  shareholders would be on
                                         a  tax-free   basis,   by,  based  upon
                                         certain   assumptions,   limiting   the
                                         aggregate amount of cash to be received
                                         by    both    the     dissenting    and
                                         non-dissenting      shareholders     of
                                         Wismer-Martin  to  20% or  less  of the
                                         aggregate  value  of the  consideration
                                         (both  cash and  shares  of PCN  Common
                                         Stock)  to  be  received  by  both  the
                                         dissenting   and   the   non-dissenting
                                         shareholders  of  Wismer-Martin.   This
                                         provision  may  result  in  adjustments
                                         decreasing the aggregate amount of cash
                                         and increasing the aggregate  number of
                                         shares  of  PCN  Common   Stock  to  be
                                         received    by    the    non-dissenting
                                         shareholders  of  Wismer-Martin  in the
                                         Merger.   This   adjustment   would  be
                                         expected to occur only if a significant
                                         number   of    shareholders    exercise
                                         dissenters'  rights.  See  "The  Merger
                                         --Dissenters'  Rights."  No  assurances
                                         can be given that such  adjustment will
                                         enable  the  Merger  to  qualify  as  a
                                         tax-free   reorganization.   See   "The
                                         Merger --  Certain  Federal  Income Tax
                                         Consequences  of the  Merger."  As used
                                         herein,   "Market   Price"   means  the
                                         average of the closing price of a share
                                         of PCN Common  Stock as reported on the
                                         NASDAQ Stock Market  during the fifteen
                                         (15) trading days immediately preceding
                                         the date of determination.

                                       See  "The Merger --  General  Description
                                         of the Merger;  -- Dissenters'  Rights;
                                         --   Certain    Federal    Income   Tax
                                         Consequences of the Merger."


Parties to the Merger

  PCN ..............................   PCN    is  a   leader   in    developing,
                                         marketing   and   supporting   practice
                                         management    software   products   for
                                         physician practices. PCN's objective is
                                         to establish a large  installed base of
                                         physician  practice  customers  who use
                                         PCN's most advanced practice management
                                         software   product,   the  PCN   Health
                                         Network  Information  System,   thereby
                                         becoming  an  important  link  for  the
                                         electronic   exchange  of   information
                                         between  physician  practices and other
                                         health     care      providers      and
                                         organizations.  In  furtherance of this
                                         objective,  since  September  1993, PCN
                                         has acquired seven practice  management
                                         software  businesses,   increasing  the
                                         number of  physicians  associated  with
                                         sites   which  have   purchased   PCN's
                                         practice  management  software products
                                         from     approximately     2,000     to
                                         approximately 85,000, making PCN one of
                                         the  largest   providers   of  practice
                                         management  software  products  in  the
                                         United  States.  PCN  plans to  migrate
                                         substantially  all of its  customers to
                                         the  PCN  Health  Network   Information
                                         System  during the next several  years.
                                         In     order     to     rapidly     and
                                         cost-effectively     supplement     its
                                         practice  management  software  product
                                         offerings with knowledge-based clinical
                                         products and services, in January 1996,
                                         PCN formed a joint  venture  with Glaxo
                                         Wellcome, Inc. ("Glaxo Wellcome").  The
                                         joint venture partnership,  HealthPoint
                                         G.P. ("HealthPoint"),  will develop and
                                         market clinical information  technology
                                         products and services that will provide

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

                                       2
<PAGE>

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

                                         the clinical  information needed at the
                                         point  of   patient   care  to   enable
                                         physicians   and  other   health   care
                                         providers  to  practice  medicine  more
                                         efficiently. In March 1996, HealthPoint
                                         introduced     its    first    product,
                                         HealthPoint  ACS,  a product  developed
                                         for    medical    offices   to   enable
                                         physicians   to,  among  other  things,
                                         manage   the    clinical    information
                                         required for  treatment at the point of
                                         care. HealthPoint ACS is expected to be
                                         made commercially  available during the
                                         second half of 1996.

                                       PCN's   practice    management   software
                                         products,  which,  among other  things,
                                         automate   physician   scheduling   and
                                         generate  patient  billings,  insurance
                                         claims  billings  and  other  financial
                                         reports,       include      interactive
                                         communication   software   that   links
                                         physician   practices  with  hospitals,
                                         Medicare/Medicaid carriers,  commercial
                                         insurance       carriers,        claims
                                         clearinghouses,  clinical laboratories,
                                         pharmacies,  HMOs and other health care
                                         organizations   who  have   established
                                         electronic  communication  links  under
                                         agreements  with  PCN.  The PCN  Health
                                         Network  Information System is designed
                                         to   become   the    common    practice
                                         management  software  platform  used by
                                         substantially  all of  PCN's  physician
                                         practice    customers    and,   as   an
                                         integrated   unit  with   HealthPoint's
                                         products,   is   expected   to  provide
                                         physicians      with      comprehensive
                                         financial,  administrative and clinical
                                         applications.  The PCN  Health  Network
                                         Information   System   will   primarily
                                         manage  the  business  elements  of the
                                         physician's  practice and HealthPoint's
                                         software  products  and  services  will
                                         primarily   provide   physicians   with
                                         clinical applications and functionality
                                         intended  to assist  physicians  in the
                                         clinical aspects of their practices.

                                       See  "Incorporation  of Certain Documents
                                         By Reference," "Selected Historical and
                                         Unaudited    Pro    Forma     Financial
                                         Information"  and  "Unaudited Pro Forma
                                         Condensed     Consolidated    Financial
                                         Statements."

  Wismer-Martin ....................   Wismer-Martin   was  formed  to  develop,
                                         market,     install     and     support
                                         microcomputer    practice    management
                                         systems and related  services  designed
                                         for the medical and dental professions.
                                         Wismer-Martin  was  founded  as a  sole
                                         proprietorship  in February of 1980 and
                                         was  incorporated  on November 29, 1982
                                         under   the   laws  of  the   State  of
                                         Washington  as  Professional   Software
                                         Associates,  Inc.  The company  changed
                                         its   name   to   Wismer-Martin,   Inc.
                                         effective  August 1, 1985.  In February
                                         1994, Wismer-Martin acquired Integrated
                                         Health Systems, Inc. ("IHS"), a company
                                         that  develops  and  licenses  software
                                         programs  for   hospitals  and  related
                                         entities.   Wismer-Martin's   principal
                                         executive  offices are located at 12828
                                         N. Newport  Highway,  Mead,  Washington
                                         99021.

                                       Wismer-Martin    derives   revenue   from
                                         systems  sales and  maintenance,  forms
                                         and  other   services.   Systems  sales
                                         include  sales  of  physician  practice
                                         management systems,  health information
                                         networks,   and  hospital   information
                                         systems to new  customers  and sales of
                                         system upgrades and add-ons to existing
                                         customers.   Systems   sales   to   new
                                         customers  include software  licensing,
                                         hardware,  installation,  training, and
                                         support   contracts  for  software  and
                                         hardware  maintenance.  System upgrades
                                         include     hardware,     installation,
                                         software licensing and training. System
                                         add-ons include  additional  peripheral
                                         hardware and  installation and software
                                         licensing.

Merger Sub .......................     Merger Sub,  a  wholly-owned   subsidiary
                                         of PCN,  was formed to  facilitate  the
                                         Merger and has engaged in no activities
                                         other than activities incidental to the
                                         Merger.

Special Meeting ....................   At     the    Special    Meeting,     the
                                         shareholders of  Wismer-Martin  will be
                                         asked to  consider  and vote upon (i) a
                                         proposal  to approve the Plan of Merger
                                         and  (ii)  such  other  matters  as may
                                         properly   come   before  the   Special
                                         Meeting.  The  Wismer-Martin  Board has
                                         fixed the close of  business  on August
                                         1,

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

                                       3
<PAGE>


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

                                         1996,   as  the  record  date  for  the
                                         determination     of     holders     of
                                         Wismer-Martin  Common Stock entitled to
                                         notice  of and to vote  at the  Special
                                         Meeting. See "Special Meeting."

                                       The   Wismer-Martin  Board  approved  the
                                         Plan of  Merger  and  the  transactions
                                         contemplated  thereby by the  unanimous
                                         vote of its  directors  and  recommends
                                         that  Wismer-Martin  shareholders  vote
                                         "FOR"  approval  of the Plan of Merger.
                                         See "The  Merger --  Background  of the
                                         Merger; --Recommendations of the Boards
                                         of  Directors;  Effects of and  Reasons
                                         for the Merger."

Required Vote ......................   The  affirmative  vote of  the holders of
                                         at least  two-thirds of the outstanding
                                         shares of  Wismer-Martin  Common  Stock
                                         entitled to vote thereon is required to
                                         approve   the  Plan  of   Merger.   See
                                         "Special   Meeting--   Voting  Rights."
                                         Certain  shareholders of  Wismer-Martin
                                         Common   Stock    (collectively,    the
                                         "Majority      Shareholders"),      who
                                         beneficially own an aggregate number of
                                         shares with votes sufficient to approve
                                         the  Plan  of  Merger   and  all  other
                                         matters   to  be  voted   upon  at  the
                                         Wismer-Martin   Special  Meeting,  have
                                         each  entered into an Option and Voting
                                         Agreement  with  PCN (the  "Option  and
                                         Voting Agreements")  pursuant to which,
                                         among  other  things,  they  each  have
                                         agreed   to  vote   their   shares   of
                                         Wismer-Martin  Common Stock in favor of
                                         the Plan of  Merger.  Accordingly,  the
                                         approval  of the Plan of  Merger by the
                                         holders  of  Common  Stock  is  assured
                                         without   the   vote   of   any   other
                                         shareholder. See "Security Ownership of
                                         Certain  Persons  and Option and Voting
                                         Agreements" and "The Merger-- Interests
                                         of  Certain  Persons  in  the  Merger--
                                         Option and Voting Agreements."

                                         If a shareholder returns a signed proxy
                                         card,  but does not indicate how his or
                                         her shares are to be voted,  the shares
                                         represented  by the proxy  card will be
                                         voted "FOR" the Plan of Merger.

Recommendations of the
Wismer-Martin Board of
Directors; Effects of
and Reasons for the Merger .........   The   Wismer-Martin  Board  believes that
                                         the  terms of the  Merger  are fair to,
                                         and   in   the   best   interests   of,
                                         Wismer-Martin   and  its  shareholders.
                                         Accordingly,  the  Wismer-Martin  Board
                                         has  unanimously  approved  the Plan of
                                         Merger     and     the     transactions
                                         contemplated   thereby  and  recommends
                                         approval  of  the  Plan  of  Merger  by
                                         Wismer-Martin     shareholders.     The
                                         recommendation    to    Wismer-Martin's
                                         shareholders that they approve the Plan
                                         of   Merger   is  the   result  of  the
                                         extensive    process    of    exploring
                                         strategic        alternatives       for
                                         Wismer-Martin.  As  a  result  of  that
                                         process,    the   Wismer-Martin   Board
                                         believes   that   the   Merger   is  an
                                         excellent        opportunity        for
                                         Wismer-Martin's    shareholders.    The
                                         Wismer-Martin  Board  believes that the
                                         Merger      offers      Wismer-Martin's
                                         shareholders    the    opportunity   to
                                         participate  in an enterprise  with the
                                         financial    strength   and   technical
                                         support  necessary to capitalize on the
                                         opportunities   in  the   changing  and
                                         increasingly    competitive    practice
                                         management  software industry and that,
                                         without   the   Merger   or  a  similar
                                         strategic  transaction,   Wismer-Martin
                                         may  lack  the   financial   and  other
                                         resources  necessary  to  maximize  its
                                         competitive  potential  beyond the near
                                         term.

                                       See  "The  Merger --  Background  of  the
                                         Merger;  --   Recommendations   of  the
                                         Wismer-Martin   Board   of   Directors;
                                         Effects of and  Reasons  for the Merger
                                         and "Management Discussion and Analysis
                                         --Liquidity and Capital Resources."

Risk Factors .......................   In connection  with  the proposed Merger,
                                         holders  of  shares  of   Wismer-Martin
                                         Common  Stock should  consider  certain
                                         risk  factors  relevant to the business
                                         of  PCN.  Such  risk  factors  include,
                                         among  others,  (i) PCN's  strategy  of
                                         acquiring      established     practice
                                         management  software businesses and the


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

                                       4
<PAGE>


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

                                         impact  of  such   strategy  on  future
                                         operating results,  (ii) uncertainty of
                                         the    acceptance   of   products   and
                                         migration  of existing  customers  to a
                                         common  practice   management  software
                                         platform,  (iii) PCN's  ability to keep
                                         pace with rapidly changing  technology,
                                         and (iv) the highly  competitive nature
                                         of  the  practice  management  software
                                         industry.  See "Risk Factors  Regarding
                                         PCN."

Security Ownership of Certain
Persons and Option and
Voting Agreements ..................   As  of  July  31,  1996,  Wismer-Martin's
                                         directors, executive officers and their
                                         affiliates and associates,  as a group,
                                         may  be  deemed  to  own   beneficially
                                         approximately  53.1% of the outstanding
                                         shares of  Wismer-Martin  Common  Stock
                                         (assuming  exercise of options  held by
                                         directors and executive officers). Each
                                         of  the   directors   and  officers  of
                                         Wismer-Martin has advised Wismer-Martin
                                         that  he or  she  intends  to  vote  or
                                         direct the vote of all the  outstanding
                                         shares of  Wismer-Martin  Common  Stock
                                         over which he or she has voting control
                                         in  favor of the  Plan of  Merger.  The
                                         Majority  Shareholders,  consisting  of
                                         Ronald and Linda Holden, Stanley T. and
                                         Beverly J.  Hatch,  Georgia  L.  Knapp,
                                         Gertrude  L.  Holden,  John  F.  Perez,
                                         Ivory & Sime  Enterprise  Capital  PLC,
                                         Glen E. and Judith L. Martin, Thomas E.
                                         and Maureen T. Holden, Harry D. Holden,
                                         and James F. Etter, beneficially own an
                                         aggregate of  approximately  71% of the
                                         outstanding   shares  of  Wismer-Martin
                                         Common Stock  representing  a number of
                                         votes sufficient to approve the Plan of
                                         Merger. The Majority  Shareholders have
                                         each  agreed in a  separate  option and
                                         voting  agreement  with  PCN to,  among
                                         other  things,  vote  their  shares  of
                                         Wismer-Martin  Common Stock entitled to
                                         vote at the Special Meeting in favor of
                                         approval   of  the   Plan  of   Merger.
                                         Further,   each   Option   and   Voting
                                         Agreement  provides that, under certain
                                         circumstances,  PCN  may  purchase  the
                                         Majority    Shareholder's   shares   of
                                         Wismer-Martin Common Stock.

                                       See   "Security   Ownership  of   Certain
                                         Persons    and    Option   and   Voting
                                         Agreements" and "The Merger --Interests
                                         of  Certain  Persons  in the  Merger --
                                         Option and Voting Agreements."

Accounting Treatment ...............   It  is   the   intention   of   PCN   and
                                         Wismer-Martin  that the Merger  will be
                                         accounted for by the purchase method of
                                         accounting for accounting and financial
                                         reporting purposes.

                                       See    "The     Merger   --    Accounting
                                         Treatment."

Conditions to the Merger;
Termination of the Merger
Agreement ..........................   In addition to  the  approval of the Plan
                                         of  Merger  by  the   shareholders   of
                                         Wismer-Martin,  the consummation of the
                                         Merger is subject  to the  satisfaction
                                         or waiver of certain other  conditions,
                                         including among others,  (i) listing on
                                         the NASDAQ  Stock  Market of PCN Common
                                         Stock    issuable   to    Wismer-Martin
                                         shareholders   in  the   Merger,   (ii)
                                         effectiveness   of   the   Registration
                                         Statement,  (iii) there being in effect
                                         no  injunction  or other  order,  legal
                                         constraint  or  prohibition  preventing
                                         the  consummation  of the  Merger,  and
                                         (iv) shareholders  holding no more than
                                         5% of any class of the capital stock of
                                         Wismer-Martin      having      demanded
                                         dissenters' rights under the Washington
                                         Business  Corporation Act (the "WBCA").
                                         The Merger  Agreement may be terminated
                                         upon the occurrence of certain  events,
                                         including,    by    either    PCN    or
                                         Wismer-Martin  if the Merger  shall not
                                         have been  consummated  by October  15,
                                         1996.

                                       See  "The  Merger Agreement -- Conditions
                                         to the Merger; - Termination."

Interests of Certain Persons
in the Merger ......................   In  considering  the   recommendation  of
                                         the Wismer-Martin Board with respect to
                                         the  Plan  of  Merger,  Wismer-Martin's
                                         shareholders   should  be  aware


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

                                       5
<PAGE>


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

                                         that certain members of Wismer-Martin's
                                         senior management and the Wismer-Martin
                                         Board  have  certain  interests  in the
                                         Merger  that  are  in  addition  to the
                                         interests    of     shareholders     of
                                         Wismer-Martin       generally.      The
                                         Wismer-Martin  Board was aware of these
                                         interests and  considered  them,  among
                                         other matters,  in approving the Merger
                                         Agreement    and    the    transactions
                                         contemplated thereby.

                                       On  June 20,  1996,   PCN entered  into a
                                         two-year  consultation  agreement  with
                                         Ronald Holden,  the current Chairman of
                                         the   Wismer-Martin   Board  and  Chief
                                         Executive Officer of Wismer-Martin.

                                       See  "The  Merger -- Interests of Certain
                                         Persons in the  Merger --  Consultation
                                         Agreement."

                                       The   Majority  Shareholders  have   each
                                         agreed in  separate  Option  and Voting
                                         Agreements  with  PCN to,  among  other
                                         things,    vote    their    shares   of
                                         Wismer-Martin  Common Stock entitled to
                                         vote at the Special Meeting in favor of
                                         approval   of  the   Plan  of   Merger.
                                         Further,   each   Option   and   Voting
                                         Agreement  provides that, under certain
                                         circumstances,  PCN  may  purchase  the
                                         Majority    Shareholder's   shares   of
                                         Wismer-Martin Common Stock.

                                       See   "Security   Ownership  of   Certain
                                         Persons    and    Option   and   Voting
                                         Agreements" and "The Merger --Interests
                                         of  Certain  Persons  in the  Merger --
                                         Option and Voting Agreements."

Comparison of Shareholder
Rights .............................   The     rights     of     Wismer-Martin's
                                         shareholders  are governed by the WBCA,
                                         Wismer-Martin's       Articles       of
                                         Incorporation,    as    amended    (the
                                         "Wismer-Martin      Articles")      and
                                         Wismer-Martin's       By-Laws      (the
                                         "Wismer-Martin  By-Laws").  As  of  the
                                         Effective    Time,    shareholders   of
                                         Wismer-Martin will become  shareholders
                                         of PCN.  As  such,  their  rights  will
                                         thereafter   be  governed  by  the  New
                                         Jersey  Business  Corporation  Act (the
                                         "NJBCA"),  the PCN Amended and Restated
                                         Certificate of Incorporation  (the "PCN
                                         Certificate")  and PCN's  By-Laws  (the
                                         "PCN By-Laws").

                                       See  "Comparison of  Shareholder  Rights"
                                         for   a   summary   of   the   material
                                         differences   between   the  rights  of
                                         holders  of PCN  Common  Stock  and the
                                         rights  of  holders  of   Wismer-Martin
                                         Common Stock.

Dissenters' Rights .................   Because   consummation  of  the  Plan  of
                                         Merger   requires   the   approval   of
                                         Wismer-Martin's  shareholders,  holders
                                         of   Wismer-Martin   Common  Stock  are
                                         entitled  to  dissent  with  respect to
                                         their  shares of  Wismer-Martin  Common
                                         Stock in connection with the Merger and
                                         thereby   receive  in  cash  the  "fair
                                         value"  of their  shares in lieu of the
                                         consideration   provided   for  in  the
                                         Merger   Agreement,   as   more   fully
                                         described   hereafter.   In   order  to
                                         properly   perfect   such   dissenters'
                                         rights, holders of Wismer-Martin Common
                                         Stock must comply  with the  procedural
                                         requirements  of the  WBCA,  including,
                                         without limitation, not voting in favor
                                         of the  Plan of  Merger  and  making  a
                                         written  demand for payment  before the
                                         date of the Special  Meeting.  See "The
                                         Merger -- Dissenters' Rights" and Annex
                                         B hereto.

Certain Federal Income
Tax Consequences of the
Merger .............................   See   "The   Merger--   Certain   Federal
                                         Income Tax  Consequences of the Merger"
                                         for a  discussion  of the  treatment of
                                         the  Merger  for  federal   income  tax
                                         purposes.


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

                                       6
<PAGE>


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

                             SELECTED FINANCIAL DATA

     The  following  selected  financial  data are derived  from the  historical
consolidated financial statements of PCN and Wismer-Martin and should be read in
conjunction with such statements and the related notes.  The selected  financial
data presented for PCN for the years ended December 31, 1995,  1994,  1993, 1992
and 1991 are audited  and,  with  respect to the years ended  December 31, 1995,
1994 and 1993, are incorporated  herein by reference from PCN's Annual Report on
Form 10-K for the year ended December 31, 1995. The PCN financial data presented
for the three months ended March 31, 1996 and 1995 are unaudited and are derived
from PCN's unaudited Consolidated Financial Statements which are incorporated by
reference  herein from PCN's Quarterly  Report on Form 10-Q for the period ended
March 31, 1996. The selected  financial data presented for Wismer-Martin for the
years ended June 30,  1995,  1994,  1993,  1992 and 1991 are audited  and,  with
respect to the years ended June 30, 1995 and 1994,  are  incorporated  herein by
reference from  Wismer-Martin's  Annual Report on Form 10-KSB for the year ended
June 30, 1995.  The  Wismer-Martin  financial data presented for the nine months
ended March 31, 1996 and 1995 are unaudited and are derived from Wismer-Martin's
unaudited  Consolidated Financial Statements which are incorporated by reference
herein from the  Quarterly  Report on Form 10-QSB for the period ended March 31,
1996.  The unaudited  Consolidated  Financial  Statements for the periods ending
March 31, 1996 and 1995 for both PCN and Wismer-Martin  include all adjustments,
consisting of normal accruals which, in the opinion of management, are necessary
for a  fair  presentation  of  PCN's  financial  position  and  the  results  of
operations  for these  periods.  Operating  results for interim  periods are not
necessarily indicative of the results that may be expected for the entire year.


(Tables follow)


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


                                       7
<PAGE>

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

<TABLE>
<CAPTION>

                        PCN CONSOLIDATED SELECTED FINANCIAL DATA AND UNAUDITED PRO FORMA FINANCIAL INFORMATION
                                                 (in thousands, except per share data)

                                                  Three Months Ended March 31,                Year Ended December 31,
                                              ------------------------------------    ---------------------------------------
                                               Pro Forma             Actual            Pro Forma             Actual
                                              As Adjusted   ----------------------    As Adjusted  --------------------------
                                                 1996(1)       1996         1995        1995(1)      1995(2)         1994(3) 
                                               ---------    ---------    ---------    ---------    ---------       ---------
<S>                                            <C>          <C>          <C>          <C>          <C>             <C>      
STATEMENT OF OPERATIONS DATA:
Revenues ...................................   $  26,323    $  21,027    $   6,458    $ 109,092    $  41,805       $  20,504
                                               ---------    ---------    ---------    ---------    ---------       ---------
Costs and expenses:
  Cost of revenues .........................      11,313        8,795        1,346       52,026       16,289           6,076
  Research and development .................       1,771        1,111          439        6,511        2,219           1,839
  Selling and marketing ....................       2,935        1,705          287       12,589        3,038           2,145
  General and administrative ...............       6,864        4,085        2,722       35,668       13,238           7,386
  Acquired technology in process ...........        --           --           --           --         14,516            --   
  Restructuring ............................        --           --           --          3,072        3,072            --   
  Write-down of assets and other charges ...        --           --           --          1,477        1,477            --   
  Interest expense, net of interest income .         487          635          366        3,738          875           1,709
  Gain on retirement of software ...........        --           --           --           --           --              --   
  Charge related to issuance of warrants ...        --           --           --           --           --              --   
                                               ---------    ---------    ---------    ---------    ---------       ---------
Income (loss) before income tax expense
  (benefit), loss on equity investment
  and extraordinary items ..................       2,953        4,696        1,298       (5,989)     (12,919)          1,349
Income tax expense (benefit) ...............         986          986           27       (1,237)      (1,419)            102
                                               ---------    ---------    ---------    ---------    ---------       ---------
Income (loss) before loss on equity
  investment and extraordinary items .......       1,967        3,710        1,271       (4,752)     (11,500)          1,247
Loss on equity investment, net of taxes ....        (395)        (395)        --           --           --              --   
                                               ---------    ---------    ---------    ---------    ---------       ---------
Income (loss) before extraordinary items ...       1,572        3,315        1,271       (4,752)     (11,500)          1,247
Extraordinary items:
  Excess carrying value of preferred stock
    over liability discharged ..............        --           --           --           --           --              --   
  Gain (loss) from the extinguishment of
    capital lease obligations and debt .....        --           --           (180)        --           (180)           --   
                                               ---------    ---------    ---------    ---------    ---------       ---------
Net income (loss) ..........................       1,572        3,315        1,091       (4,752)     (11,680)          1,247
Forfeited (accrued) dividends on
  preferred stock ..........................        --           --           --           --           --              --   
                                               ---------    ---------    ---------    ---------    ---------       ---------
Net income (loss) available to common
  shareholders .............................   $   1,572    $   3,315    $   1,091    $  (4,752)   $ (11,680)(4)   $   1,247
                                               =========    =========    =========    =========    =========       =========

</TABLE>


                    PCN CONSOLIDATED SELECTED FINANCIAL DATA
           AND UNAUDITED PRO FORMA FINANCIAL INFORMATION (Continued)
                      (in thousands, except per share data)

<TABLE>
<CAPTION>

                                                      Year Ended December 31,
                                               -----------------------------------
                                                              Actual
                                               -----------------------------------
                                                 1993(3)       1992         1991
                                               ---------    ---------    ---------
<S>                                            <C>          <C>          <C>      
STATEMENT OF OPERATIONS DATA:
Revenues ...................................   $   6,109    $   3,124    $   2,101
                                               ---------    ---------    ---------
 Costs and expenses:
  Cost of revenues .........................      10,255        7,850        9,209
  Research and development .................         898          678          561
  Selling and marketing ....................       1,717        1,441          910
  General and administrative ...............       6,454        7,877        5,571
  Acquired technology in process ...........      10,872         --           --
  Restructuring ............................       3,165         --           --
  Write-down of assets and other charges ...       3,300         --           --
  Interest expense, net of interest income .         942        1,242        4,909
  Gain on retirement of software ...........        --           --           (123)
  Charge related to issuance of warrants ...        --           --          2,491
                                               ---------    ---------    ---------
Income (loss) before income tax expense
  (benefit), loss on equity investment
  and extraordinary items ..................     (31,494)     (15,964)     (21,427)
Income tax expense (benefit) ...............        --           --           --
                                               ---------    ---------    ---------
Income (loss) before loss on equity
  investment and extraordinary items .......     (31,494)     (15,964)     (21,427)
Loss on equity investment, net of taxes ....        --           --           --
                                               ---------    ---------    ---------
Income (loss) before extraordinary items ...     (31,494)     (15,964)     (21,427)
Extraordinary items:
  Excess carrying value of preferred stock
    over liability discharged ..............        --           --         (2,987)
  Gain (loss) from the extinguishment of
    capital lease obligations and debt .....       8,498         --           --
                                               ---------    ---------    ---------
Net income (loss) ..........................     (22,996)     (15,964)     (24,414)
Forfeited (accrued) dividends on
  preferred stock ..........................       2,957       (2,896)        (250)
                                               ---------    ---------    ---------
Net income (loss) available to common
  shareholders .............................   $ (20,039)   $ (18,860)   $ (24,664)
                                               =========    =========    =========

</TABLE>


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

                                       8
<PAGE>


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

                    PCN CONSOLIDATED SELECTED FINANCIAL DATA
           AND UNAUDITED PRO FORMA FINANCIAL INFORMATION (Continued)
                      (in thousands, except per share data)

<TABLE>
<CAPTION>

                                             Three Months Ended March 31,       Year Ended December 31,
                                          ---------------------------------     ----------------------
                                           Pro Forma           Actual            Pro Forma                  
                                          As Adjusted   -------------------     As Adjusted    Actual       
                                             1996(1)      1996        1995        1995(1)      1995(2)      
                                           --------     -------     -------      --------      -------      
<S>                                          <C>         <C>          <C>          <C>         <C>          
SHARE INFORMATION:
Primary and Fully-diluted 
  Earnings (loss) per common share:
Before extraordinary items ..............    $ 0.03      $ 0.07       $ 0.03       $ (0.09)    $ (0.29)      
Extraordinary items .....................        --          --           --            --          --       
                                            -------     -------      -------      --------    --------       
Earnings (loss) .........................    $ 0.03      $ 0.07       $ 0.03       $ (0.09)    $ (0.29)      
                                            =======     =======      =======      ========    ========       
Primary weighted average number of
  common shares outstanding (5)..........    57,239      49,864       39,358        50,066      40,068       
Fully-diluted weighted average number
  of common shares outstanding (5).......    57,477      50,102       40,319        50,066      40,068       
Book value...............................     $1.83       $0.76                      $2.04       $0.68
</TABLE>



<TABLE>
<CAPTION>

                                                      Year Ended December 31,
                                        -----------------------------------------------
                                                              Actual
                                        -----------------------------------------------
                                           1994(3)     1993(3)      1992         1991
                                          -------     --------    --------     --------  
<S>                                        <C>         <C>         <C>          <C>      
SHARE INFORMATION (Continued):
Primary and Fully-diluted                 
  Earnings (loss) per common share:       
Before extraordinary items ..............  $ 0.04      $ (1.38)    $ (2.19)     $ (3.77) 
Extraordinary items .....................      --         0.41          --        (0.52) 
                                          -------     --------    --------     --------  
Earnings (loss) .........................  $ 0.04      $ (0.97)    $ (2.19)     $ (4.29) 
                                          =======     ========    ========     ========  
Primary weighted average number of                                                       
  common shares outstanding (5)..........  35,634       20,688       8,601        5,746  
Fully-diluted weighted average number                                                    
  of common shares outstanding (5).......  35,634       20,688       8,601        5,746  
Book value...............................                                                

</TABLE>

<TABLE>
<CAPTION>

                                                At March 31, 1996
                                          -------------------------                              At December 31,
                                             Pro Forma                  ------------------------------------------------------
                                          As Adjusted (1)   Actual        1995       1994       1993        1992        1991
                                          -------------    --------     --------    -------    -------     -------     -------
<S>                                          <C>            <C>         <C>         <C>        <C>         <C>        <C>    
BALANCE SHEET DATA:
Cash and cash equivalents ...............    $ 40,177       $ 9,815     $ 15,517    $ 2,512    $ 9,671     $ 1,472    $18,270
Working capital (deficit) ...............      19,679        (6,938)      (9,006)    (3,971)    (2,675)       (790)    11,452
Current assets ..........................      72,721        39,162       42,326      8,731     11,890       4,141     19,637
Intangible assets, net ..................      75,571        52,741       53,701      8,342      6,707       1,612      2,040
Total assets ............................     161,956       102,910      100,260     18,233     20,504      15,604     31,807
Current liabilities .....................      53,042        46,100       51,332     12,702     14,565       4,931      8,185
Long-term liabilities ...................      13,651        22,799       19,730     14,105     15,807      16,204     10,297
Shareholders' equity (deficiency) .......      95,263        34,011       29,198     (8,574)    (9,868)     (5,531)    13,325
</TABLE>


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

                                       9
<PAGE>


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

               WISMER-MARTIN CONSOLIDATED SELECTED FINANCIAL DATA
                      (in thousands, except per share data)

<TABLE>
<CAPTION>

                                                        Nine Months Ended
                                                            March 31,                         Year Ended June 30,
                                                       -----------------     ---------------------------------------------------
                                                       1996       1995        1995       1994        1993       1992       1991
                                                      ------     -------     -------    -------     -------    -------    ------
<S>                                                   <C>        <C>         <C>        <C>         <C>        <C>        <C>   
STATEMENT OF OPERATIONS DATA:
Revenues ........................................     $7,668     $ 7,830     $10,482    $14,397     $13,085    $12,880    $8,676
                                                      ------     -------     -------    -------     -------    -------    ------
Costs and expenses:
  Cost of revenues ..............................      2,855       4,058       5,140      7,075       7,615      4,412     3,197
  Research and development ......................        596         600         577        252          27        189        71
  Selling and marketing .........................      1,016       1,896       2,334      1,994       1,196      2,786     1,963
  General and administrative ....................      1,978       2,819       3,780      3,921       5,325      5,542     3,328
  Interest expense, net of interest income ......        110         282         370        164         184        114       186
                                                      ------     -------     -------    -------     -------    -------    ------
Income (loss) before income tax expense (loss) ..      1,113      (1,825)     (1,719)       991      (1,262)      (163)      (67)
  Income tax expense (benefit) ..................         --        (343)       (342)       265          12       (356)       --
                                                      ------     -------     -------    -------     -------    -------    ------
Income (loss) before cumulative effect of
  change in accounting principle.................      1,113      (1,482)     (1,377)       726      (1,274)       193       (67)
Cumulative effect on change in
  accounting principle...........................         --          --          --         28          --         --        --
Net income (loss) available to
  common shareholders ...........................     $1,113    $ (1,482)   $ (1,377)     $ 698    $ (1,274)     $ 193     $ (67)
                                                      ======     =======     =======    =======     =======    =======    ======

SHARE INFORMATION:
Actual:
  Primary and fully-diluted earnings (loss)
    per common share ............................      $0.07      $(0.15)     $(0.14)     $0.07      $(0.14)     $0.02    $(0.01)
  Weighted average number of common
    shares outstanding ..........................     14,880       9,686       9,726      9,797       9,198      9,104     8,939
  Book value ....................................      $0.18                  $(0.18)
Pro Forma -- Equivalent combined per
  Wismer-Martin share:
  Primary and fully-diluted earnings (loss)
    per common share ............................      $-- (6)                $-- (6)
  Book value ....................................      $0.10                  $ 0.11

</TABLE>


<TABLE>
<CAPTION>

                                                                                                 At June 30,
                                                              At March 31,    ---------------------------------------------------
                                                                  1996         1995       1994       1993       1992        1991
                                                              -----------     ------     ------     ------     ------      ------
<S>                                                              <C>            <C>       <C>       <C>         <C>         <C>  
BALANCE SHEET DATA:
Cash and cash equivalents .................................      $ 540         $  91      $ 588     $ 203       $ 386       $ 148
Working capital (deficit) .................................       (918)       (2,691)       117      (763)        786           1
Current assets ............................................      1,613         1,316      4,386     4,263       6,203       3,712
Intangible assets, net ....................................      3,430         3,129      1,881     1,327         806         895
Total assets ..............................................      6,386         6,247      8,478     7,228       8,824       6,497
Current liabilities .......................................      2,531         4,007      4,269     5,026       5,417       3,711
Long-term liabilities .....................................        852         4,034      4,748     1,031       1,497       1,096
Shareholders' equity (deficiency) .........................      3,003        (1,794)      (539)    1,171       1,910       1,690

                                                                                               (Notes on following page)
</TABLE>


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

                                       10
<PAGE>



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

(footnotes for preceding page)


- ----------

(1)  Pro forma as adjusted  gives effect to (i) the proposed  acquisition by PCN
     of Wismer-Martin,  (ii) the acquisition by PCN of certain assets related to
     the practice  management  software and other  software  businesses  of CUSA
     Technologies, Inc. (the "CTI Business"), and (iii) the completion by PCN on
     May 10, 1996 of the public offering of 6,440,000 shares of its Common Stock
     at $10.00 per share (the "1996  Offering"),  of which 1,932,217 shares were
     issued by PCN to Equifax,  Inc.  ("Equifax") upon the conversion in full of
     the  five  year,  $10,000,000  principal  amount  convertible  subordinated
     promissory  note  issued to  Equifax on  February  15,  1995 (the  "Equifax
     Note").   In  addition  to  the  above,  pro  forma  as  adjusted  for  the
     Consolidated  Statement of Operations  Data for the year ended December 31,
     1995 also gives effect to PCN's February 1995 public offering of PCN Common
     Stock,  October  1995  Regulation  S  offering  of  PCN  Common  Stock  and
     convertible  preferred  stock and the  acquisition  of Versyss  and the PMS
     Business and the related financings.

(2)  Includes the operations of the Practice  Management Systems Corp.  business
     (the  "PMS  Business")  from  April  24,  1995  and  Versyss   Incorporated
     ("Versyss") from October 27, 1995.

(3)  The year  ended  December  31,  1994  includes  the  operations  of Wallaby
     Software  Corporation  ("Wallaby") and Calyx Corporation  ("Calyx") for the
     full year, the operations of the DOM/2 business from March 11, 1994 and the
     operations of the Acclaim  business from November 15, 1994.  The year ended
     December 31, 1993 includes the operations of Calyx from September 23, 1993.

(4)  The year ended  December 31, 1995  includes  charges of $14,516  related to
     acquired technology in process and $5,579 principally related to provisions
     for  restructuring  and the  write-down  of assets and other  charges.  See
     "Management's   Discussion  and  Analysis  of  Results  of  Operations  and
     Financial  Condition" and PCN's Consolidated  Financial Statements included
     elsewhere in this report.

(5)  Primary and fully  diluted  earnings per common share are the same,  as the
     assumed exercise of outstanding  stock options and warrants would not cause
     a material  dilutive  effect on the  earnings per common share for the year
     ended December 31, 1994 and would be  anti-dilutive  in the  calculation of
     the loss per common share for December 31, 1995, 1993, 1992 and 1991. As of
     December 31, 1995,  warrants and options to purchase  10,244,280  shares of
     Common Stock were  outstanding,  of which  warrants and options to purchase
     3,249,106 shares were exercisable on such date.

(6)  Less than $0.01 income (loss) per share for the respective period.


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

                                       11
<PAGE>


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

                          COMPARATIVE MARKET PRICE DATA

     The PCN Common Stock is traded in the  over-the-counter  market ("OTC") and
is  quoted  on  the  NASDAQ   National  Market  under  the  symbol  "PCNI."  The
Wismer-Martin  Common  Stock is traded  in the OTC and is quoted on the  Spokane
Quotation System, Inc. ("SQSI") under the symbol "WSMM."

     The table  below sets  forth,  for the  calendar  quarters  indicated,  the
reported high and low sale prices of the PCN Common Stock on the NASDAQ National
Market and of the high and low bid prices of  Wismer-Martin  Common Stock on the
SQSI, in each case based on published financial sources.

                                         PCN                    Wismer-Martin
                                    Common Stock                Common Stock*
                                   ---------------           ------------------
                                    High      Low             High         Low
                                   ------   ------           ------      ------
Calendar 1994

First Quarter..................    $5.88     $3.63           $0.50       $0.32
Second Quarter.................     4.88      3.38            2.00        1.50
Third Quarter..................     6.38      3.38            3.25        2.50
Fourth Quarter.................     6.50      4.25            2.25        1.75

Calendar 1995

First Quarter..................     5.75      3.63            2.25        1.50
Second Quarter.................     5.13      3.69            2.50        1.50
Third Quarter..................     6.75      3.75            2.25        0.75
Fourth Quarter.................     9.13      5.13            1.00        0.50

Calendar 1996

First Quarter..................    14.88      8.50            0.56        0.25
Second Quarter.................    14.88      8.63            0.75        0.62
Third Quarter 
  (through August 7, 1996).....    11.88      6.88            0.62        0.40

- ----------

     * The prices reported reflect inter-dealer prices, without regard to retail
mark-ups,  mark-downs or commissions,  and do not necessarily  represent  actual
transactions.

     Neither PCN nor  Wismer-Martin  has ever  declared a cash dividend on their
common stock. Both PCN and  Wismer-Martin  currently intend to retain any future
earnings to finance growth and development of their  respective  businesses and,
therefore,  do not anticipate paying cash dividends on their common stock in the
foreseeable future.

     As of August 7,  1996,  there  were  approximately  509 and 384  holders of
record of PCN Common Stock and Wismer-Martin Common Stock, respectively.

     Wismer-Martin  shareholders  are urged to obtain current market  quotations
for the PCN Common Stock and the Wismer-Martin  Common Stock before deciding how
to vote.

     The Merger was publicly  announced at the  commencement  of trading on June
20,  1996.  The closing  sale price of a share of PCN Common Stock on the NASDAQ
National Market on June 20, 1996, was $10.63, and, although there were no actual
sales on such date, the bid and asked price of a share of  Wismer-Martin  Common
Stock on the SQSI on such date was $0.63 and $0.81, respectively.

     On August 7, 1996 (the last  practicable  date prior to the mailing of this
Proxy Statement and Prospectus), the closing sale price of a share of PCN Common
Stock on the NASDAQ National Market was $10.75, and the bid and asked price of a
share  of  Wismer-Martin   Common  Stock  on  the  SQSI  was  $0.40  and  $0.62,
respectively.


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


                                       12
<PAGE>



                           RISK FACTORS REGARDING PCN

     In  addition  to  the  other   information  in  this  Proxy  Statement  and
Prospectus,  holders of Wismer-Martin Common Stock should carefully consider the
factors set forth below before voting with respect to the Merger.

     Acquisition  Strategy and Impact on Future Operating Results. A key element
of  PCN's  strategy  is to  acquire  established  practice  management  software
businesses  in order to increase  PCN's  installed  base of  physician  practice
customers.  There  is  significant  competition  for  acquisitions  of  practice
management software businesses and PCN is in competition with companies that may
have  significantly   greater  financial  resources.   Further,  as  competition
intensifies due to ongoing  consolidation  in the practice  management  software
industry,  the costs of capitalizing on such  opportunities  may increase.  As a
result, although PCN is actively pursuing potential  acquisitions,  there can be
no assurance that any potential acquisitions will be consummated.  Expansion and
growth of PCN's business as a result of acquisitions may also place  significant
demands on PCN's financial and management resources.  If PCN is unable to manage
its growth effectively,  the quality of its services, its ability to recruit and
retain  key  personnel  or  physician  practice  customers  and its  results  of
operations could be materially and adversely affected. In addition,  the ability
of PCN to  meet  its  objectives  will  depend  on its  ability  to  effectively
integrate any additional  acquisitions into PCN's existing corporate  structure.
No  assurance  can be given  that PCN will be able to  operate  or  successfully
integrate the acquired businesses profitably or otherwise successfully implement
its  expansion  strategy.  PCN  may  finance  any  future  acquisitions  through
borrowings or the issuance of debt or equity securities.  Any issuance of equity
securities  could have a dilutive  effect on the holders of PCN Common Stock. In
addition,  in connection with  acquisitions,  PCN may acquire intangible assets,
including goodwill. When factors indicate that these intangible assets should be
evaluated  for possible  impairment,  PCN may be required to reduce the carrying
value of its intangible  assets,  which could have a material  adverse effect on
the results of operations  of PCN during the periods in which such  reduction is
recognized.  In addition,  in connection with certain of its past  acquisitions,
PCN  acquired  technology  in  process  that  had  not  achieved   technological
feasibility at the date of acquisition and had no alternative  future uses. As a
result,  PCN has, and to the extent any such  acquired  technology in process is
acquired  as part of future  acquisitions  may,  charge  the fair  value of such
acquired  technology in process  against  operations at the time of acquisition.
Any such future  charges could have a material  adverse effect on the results of
operations of PCN during the period in which such charges are taken.

     Uncertainty of Acceptance of Product and Migration  Strategy.  In September
1994, PCN introduced its most advanced practice management software product, the
PCN Health Network  Information  System.  This product is designed to become the
common practice  management software platform used by substantially all of PCN's
physician  practice  customers  and  to  provide  enhanced   communication  link
capabilities.  PCN's  future  growth and  profitability  will be effected by its
ability  to  migrate  its  customers,   including   customers  acquired  through
acquisitions,  to the PCN  Health  Network  Information  System.  While  to date
migrations  have generally  proceeded in accordance with  management's  plan, no
assurance can be given that such migrations  will continue.  In the event PCN is
unable to migrate its  customers,  PCN may be  required to incur the  additional
expense of maintaining and supporting a number of different practice  management
software  products  simultaneously  and PCN's ability to connect new  Connecting
Service  Providers  may be adversely  affected.  There can be no assurance  that
PCN's efforts to migrate its customers,  particularly customers acquired through
acquisitions, to the PCN Health Network Information System will be successful.

     History of  Significant  Losses.  Although for the year ended  December 31,
1994,  PCN generated net income of  $1,247,219,  for the year ended December 31,
1995 and the three year period ended December 31, 1993, PCN sustained a net loss
of  $11,680,187  and  $63,563,000,  respectively.  The net  loss in 1995 was the
result of charges taken by PCN for acquired  technology  in process,  provisions
for  restructuring,   the  write-down  of  assets  and  other  charges  and  the
extinguishment of debt. PCN's net losses prior to 1994 resulted principally from
the development of its software and communication link products,  as well as the
capital intensive nature of PCN's prior direct sales expansion  strategy.  There
can be no assurance that PCN will generate net income in the future.

     Acceptance of HealthPoint Products; Control of Joint Venture and Allocation
of  Profits  and  Losses.  In  January  1996,  PCN  and  Glaxo  Wellcome  formed
HealthPoint,  a joint venture general  partnership owned equally by wholly-owned
subsidiaries  of PCN and Glaxo  Wellcome (the  "Company  Partner" and the "Glaxo
Wellcome  Partner,"  respectively),  to develop and market clinical  information
technology  products  and  services to health  care  customers.  PCN's  practice
management  software  products are expected to continue to focus on the business
aspects of physician  customers'  practices and HealthPoint's  software products
and  services  are  expected  to  provide  physician   customers  with  clinical
applications and functionality.  PCN has agreed that HealthPoint's  products and
services will, generally,


                                       13
<PAGE>


be the exclusive clinical  information  technology products and services offered
by PCN to its customers. As a result, PCN's future growth and profitability will
depend in part upon future acceptance of HealthPoint's products and services. In
March 1996, HealthPoint introduced its first product,  HealthPoint ACS, which is
expected to be commercially  available during the second half of 1996. There can
be no assurance that HealthPoint's products will be successful.

     A   management   committee   comprised  of  two  Glaxo   Wellcome   Partner
representatives, two Company Partner representatives and one representative from
HealthPoint's management will oversee the venture's operations. Accordingly, PCN
does not have unilateral control over the strategic  direction and operations of
HealthPoint.  Glaxo  Wellcome may at any time have  economic,  business or legal
interests or goals that are inconsistent  with those of HealthPoint or PCN. As a
result, no assurance can be given that HealthPoint will not establish objectives
or operate its business in a manner which  diverges from or is  inconsistent  or
competitive  with the  strategy  and  objectives  of PCN.  In  addition,  losses
incurred by Healthpoint  will generally be allocated  between the Glaxo Wellcome
Partner and PCN Partner in proportion  to their  respective  cash  contributions
(approximately 85% to the Glaxo Wellcome Partner and 15% to PCN Partner),  while
any profits will  generally  be  allocated  equally  between the  partners.  The
HealthPoint  partners have agreed to contribute an aggregate of $50 million ($43
million to be  contributed  by the Glaxo  Wellcome  Partner and $7 million to be
contributed by PCN Partner) to fund HealthPoint's initial operating expenses. As
a result,  PCN expects to incur losses during the startup phase of HealthPoint's
business.

     Uncertainty  of  Data  Product  Business;   Regulatory  Authority  For  and
Potential Liability  Associated with Data Product Business.  PCN expects that an
important  aspect  of  HealthPoint's  strategy  will  be  to  utilize  anonymous
aggregate  clinical data generated by,  including data  electronically  accessed
from,  the databases of its physician  practice  customers to develop and market
clinical and  analytical  information  products and  services,  including  those
related to the  development  and  support of the disease  management  efforts of
health care suppliers,  including potential  pharmaceutical company customers of
the venture.  Neither  HealthPoint  nor PCN has  marketed  any such  products or
services. HealthPoint has not determined the nature of the products and services
to be developed or  established  a marketing  strategy  with respect to any such
products  and  services.  There can be no  assurance  that any such  products or
services  can be  successfully  marketed and sold.  In  addition,  HealthPoint's
ability  to  obtain a  commercially  significant  pool of data is  dependent  on
HealthPoint  creating  an  installed  base  of  HealthPoint  ACS  customers.  No
assurance can be given that a sufficient  base of HealthPoint ACS customers will
be  established or that such customers will utilize the system in a manner which
will render the pool of available data  commercially  significant.  Further,  no
assurance can be given that customers will not prohibit such access.

     There  are a  number  of  legal  and  regulatory  issues  relating  to  the
utilization  and  sharing  of  anonymous  aggregate  clinical  data that PCN and
HealthPoint  are  currently  evaluating.  There can be no assurance  that future
interpretations  by regulatory  authorities of existing laws and  regulations or
future  laws and  regulations  will not  directly  or  indirectly  restrict  the
collection or  dissemination of information  derived from patient  records.  The
American  Medical  Association  (the "AMA") has issued a Current  Opinion to the
effect that a physician  that does not obtain a patient's  consent to disclosure
of patient  information,  including  anonymous  disclosure,  violates  the AMA's
ethical  standards  with  respect  to patient  confidentiality.  While the AMA's
Current  Opinions are not law, they may  influence  physicians'  willingness  to
obtain patient  consents or agree to permit  HealthPoint to access clinical data
in their  systems  without such  consents.  Any such  restrictions  could have a
material adverse effect on HealthPoint's  ability to market certain clinical and
analytical  products and  services.  Although  HealthPoint  intends to safeguard
patient  privacy  when  clinical  data is  accessed,  if a patient's  privacy is
violated,  HealthPoint could be liable for damages incurred by such patients and
customers.

     Uncertain   Availability  of  Additional  Funding.  PCN  expects  that  its
operating   cash  flow  will  be  sufficient  to  fund  PCN's  working   capital
requirements  (including  research and  development)  at least through  December
1997,  and enable it to continue  its  acquisition  strategy.  PCN's  ability to
satisfy its working capital  obligations  will,  however,  be dependent upon its
future  performance,  which is  subject to general  economic  conditions  and to
financial,  business and other factors,  including factors beyond PCN's control.
PCN's  ability to  continue  its  acquisition  strategy  will be affected by the
extent and pace at which PCN utilizes its available  resources for acquisitions.
Accordingly,  PCN may in the future be  required to seek  additional  sources of
financing, including borrowing and/or the sale of equity securities. PCN has not
sought  and does not  currently  have a  revolving  credit  facility  and,  if a
shortfall occurs,  alternative  sources of financing would be necessary in order
for PCN to meet its liquidity  requirements.  There can be no assurance that any
additional  financing  would be  available  on  acceptable  terms or at all.  If
additional  funds are raised by issuing equity  securities,  further dilution to
shareholders may result.


                                       14
<PAGE>


     Technological Changes. The market for physician practice management systems
is characterized  by continual  change and improvement in computer  hardware and
software technology,  as well as in services. The PCN Health Network Information
System is a UNIX-based  system which was first  introduced in September 1994. In
March 1996, HealthPoint introduced its first product,  HealthPoint ACS, which is
expected to be commercially  available during the second half of 1996.  Although
PCN believes that its products and services  continue to be  competitive  in the
marketplace,  PCN intends to  continue to upgrade and enhance the  functionality
and  capabilities of its products and services and expects that HealthPoint will
do the same. PCN's success will depend considerably upon PCN's and HealthPoint's
ability to enhance its current products and services,  to introduce new products
and services which keep pace with  technological and market  developments and to
address the increasingly  sophisticated needs of its customers.  There can be no
assurance  that either PCN or  HealthPoint  will be successful in developing and
marketing, on a timely basis, product or service enhancements or new products or
services  that  respond to  advances  by  others,  or that its new  products  or
services will adequately address the needs of, or be accepted by, the market.

     Reliance  on  Independent  Resellers.  PCN relies  heavily  on  independent
resellers  for the sale and  distribution  of its  products,  with  software and
hardware sales by such resellers accounting for approximately 63% of PCN's total
software and hardware  sales during the year ended  December 31, 1995.  Although
PCN is not  dependent on one or a small number of  resellers  for a  significant
percentage of its total revenues,  the loss of a significant number of resellers
during a short  period of time  could have a  material  adverse  effect on PCN's
results of operations and the migration of its physician practice customers from
their current practice  management  software  products to the PCN Health Network
Information System.

     Dependence on Proprietary Technology.  PCN relies on a combination of trade
secrets,  copy right and trademark laws,  technology and nondisclosure and other
contractual provisions to protect its proprietary rights in its products.  There
can be no  assurance  that  these  protections  will be  adequate  or that PCN's
competitors will not independently  develop  technologies that are substantially
equivalent  or superior to PCN's  technology.  Although  PCN  believes  that its
products,  trademarks  and other  proprietary  rights do not  infringe  upon the
proprietary  rights of third  parties,  there  can be no  assurance  that  third
parties will not assert  infringement claims against PCN in the future, that any
such assertion of infringement will not result in litigation,  or that PCN would
prevail  in such  litigation  or be able  to  license  any  valid  or  infringed
products,   trademarks  or  other  proprietary  rights  from  third  parties  on
commercially reasonable terms. Further,  litigation,  regardless of its outcome,
could result in substantial cost to PCN and may divert management's efforts from
operating the business.

     Government Regulation. PCN's business is not directly subject to government
regulation.  However,  the health care industry is subject to extensive Federal,
state and local regulation  governing  reimbursements  for services rendered and
conduct  of  operations  at  health  care  facilities.   The  effect  of  future
legislation and regulation on current and prospective  customers may, in certain
circumstances,  have an adverse effect upon PCN's business.  However, PCN cannot
predict  the  impact,  if any,  of  future  legislation  and  regulation  on its
business.  Further,  certain clinical  diagnostic  applications of HealthPoint's
computer-assisted  services may be subject to regulation by the Federal Food and
Drug Administration (the "FDA") as medical devices, which could create delays in
the marketing of HealthPoint's products and services. In addition, HealthPoint's
use of  clinical  data may also be  affected  by  existing  or  future  laws and
regulations.

     Highly  Competitive  Market. The practice  management  software industry is
highly  competitive  and  fragmented.  PCN  believes  that in 1994 the  industry
included  approximately  1,100  competitors  of varying sizes.  PCN's  principal
competitors  includes other physician practice  management  software  companies,
software distributors which sell off-the-shelf  programs and compatible hardware
to smaller  practices  where  competition is based  primarily on price,  certain
national and regional  companies which offer information  systems to health care
providers,  and data processing organizations which provide computerized billing
and record management services to medical offices.  In addition,  certain claims
processing organizations,  hospitals,  third-party administrators,  insurers and
other health care  organizations  now provide  computer and/or other  electronic
data transmission systems, which sometimes include practice management software,
to  physicians  for a direct  communications  link between the physician and the
organization.  Similarly,  a number of other  companies have developed  clinical
information products,  some of which are commercially  available.  As the market
for PCN's  products  develop,  additional  competitors  may enter the market and
competition may intensify.  Certain of PCN's and HealthPoint's  competitors have
greater financial,  development,  technical,  marketing and sales resources than
PCN and HealthPoint  and no assurance can be given that PCN or HealthPoint  will
be able to compete with its  competitors in the future.  During the twelve month
period  ended   December  31,  1995  and  1994,   approximately   32%  and  13%,
respectively, of PCN's revenues were derived


                                       15
<PAGE>


from sales of hardware and hardware maintenance.  The computer hardware business
is extremely  competitive and there can be no assurance that PCN will be able to
continue to derive substantial operating revenues therefrom.

     Concentration  of Stock  Ownership.  Mr. Jeffry M. Picower (the "Investor")
beneficially  owned  approximately  44% of the  outstanding PCN Common Stock. In
addition, the Investor owns a warrant to purchase 5,000,000 shares of PCN Common
Stock at an aggregate  exercise price of $25,000,000;  however,  such warrant is
not exercisable until September 1997. As a result, the Investor is able to exert
significant influence over PCN's affairs and business.

     Possible  Volatility  of Stock  Price.  Since the PCN Common Stock has been
publicly traded,  the market price of the PCN Common Stock has fluctuated over a
wide range and may continue to do so in the future.  See "Summary -- Comparative
Market Price Data." Factors such as announcements of acquisitions, technological
innovations  or new  products  by PCN or its  competitors,  as  well  as  market
conditions  in  the  computer  software  or  hardware  industries,  may  have  a
significant impact on the market price of the PCN Common Stock.

     Future  Sales  of PCN  Common  Stock.  Upon  consummation  of  the  Merger,
approximately  27,536,457 outstanding shares of PCN Common Stock will be subject
to the  restrictions  of Rule 144 under the  Securities  Act, and, under certain
circumstances,  may be  sold  without  registration  pursuant  to Rule  144.  In
addition,  1,000  shares of PCN's  Series A  Convertible  Preferred  Stock ("PCN
Convertible  Preferred  Stock") were outstanding as of June 30, 1996. Each share
of PCN  Convertible  Preferred  Stock is  convertible  into  between 142 and 333
shares of PCN Common  Stock,  depending  upon the market price of the PCN Common
Stock on the date of conversion.  Any shares of PCN Convertible  Preferred Stock
not converted by October 20, 1997 will  automatically be converted on such date.
Further,  certain  shareholders have  registration  rights with respect to their
restricted shares. In addition,  PCN intends to file a registration statement to
register up to a total of  3,500,000  shares of PCN Common Stock  issuable  upon
exercise of options  available  to be granted  under PCN's Value Added  Reseller
Stock Option Plan to PCN's  independent  resellers.  Upon  effectiveness of such
registration  statement,  shares of PCN Common Stock  issuable  upon exercise of
vested options will be eligible for sale in the public  markets.  As of July 31,
1996,  vested  options to purchase  199,925 shares at an exercise price of $57/8
were  outstanding  under that Plan.  The public  sale of  restricted  securities
pursuant to Rule 144, an effective registration  statement, or otherwise, or the
perception that such sales could occur, may have an adverse effect on the market
price of the PCN Common  Stock and on PCN's  ability to raise funds  through the
sale of additional equity securities.

     No  Dividends.  PCN has never  declared or paid any dividends on PCN Common
Stock,  and it is not  anticipated  that  any  dividends  will  be  paid  in the
foreseeable future.

     Anti-Takeover Provisions; Possible Issuance of Preferred Stock. PCN's Board
of  Directors  has the  authority  to  issue  up to  1,000,000  shares  of PCN's
preferred  stock,  of which 1,000  shares were  outstanding  as PCN  Convertible
Preferred Stock as of July 31, 1996,  without further  shareholder  approval and
upon such terms and conditions,  having such rights, privileges and preferences,
as the Board of Directors may determine. The rights of the holders of PCN Common
Stock will be subject to, and may be  adversely  affected  by, the rights of any
holders of  preferred  stock that may be issued in the future.  The  issuance of
preferred  stock,  while  providing  flexibility  in  connection  with  possible
acquisitions  and other corporate  purposes,  could have the effect of making it
more difficult for a third party to acquire,  or discouraging a third party from
acquiring, a majority of the outstanding voting stock of PCN.


                                       16
<PAGE>


                        PHYSICIAN COMPUTER NETWORK, INC.
                               WISMER-MARTIN, INC.

                         PROXY STATEMENT AND PROSPECTUS

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

     This Proxy Statement and Prospectus is being furnished to holders of shares
of the common  stock,  par value  $.001 per share,  of  Wismer-Martin,  Inc.,  a
Washington  corporation,  in connection with the  solicitation of proxies by the
Wismer-Martin   Board  for  use  at  a  special   meeting  of   shareholders  of
Wismer-Martin  to be held at the executive  offices of  Wismer-Martin,  12828 N.
Newport  Highway,  Mead,  Washington  99021, on September 9, 1996, at 9:00 a.m.,
local time, and at any adjournments thereof. At the Special Meeting,  holders of
record as of August 1, 1996, of Wismer-Martin  Common Stock will be requested to
consider  and vote upon a proposal  to approve a Plan of Merger  pursuant  to an
Agreement  and Plan of Merger  dated June 20,  1996,  among  Physician  Computer
Network,  Inc.,  a  New  Jersey  corporation,  Northwest  Acquisition  Corp.,  a
Washington corporation and a wholly-owned subsidiary of PCN, and Wismer-Martin.

     In addition,  this Proxy Statement and Prospectus  serves as the prospectus
of PCN under the Securities  Act of 1933, as amended,  for the issuance of up to
1,450,000  shares  of PCN  Common  Stock to be  issued  pursuant  to the  Merger
Agreement.


                                 SPECIAL MEETING


Purpose of the Meeting

     At the Special Meeting,  the holders of Wismer-Martin Common Stock, will be
asked to consider and vote upon (i) a proposal to approve the Plan of Merger and
(ii) such other matters as may properly be brought before the Special Meeting.

     The   Wismer-Martin   Board  has  approved  the  Plan  of  Merger  and  the
transactions  contemplated thereby and unanimously  recommends that shareholders
of Wismer-Martin vote "FOR" approval of the Plan of Merger.

     See "The Merger --  Background  of the Merger;  --  Recommendations  of the
Wismer-Martin Board of Directors; Effects of and Reasons for the Merger."


Date, Time and Place; Record Date

     The Special  Meeting is scheduled to be held at 9:00 a.m.,  local time,  on
September 9, 1996, at the executive offices of  Wismer-Martin,  12828 N. Newport
Highway,  Mead, Washington 99021. The Wismer-Martin Board has fixed the close of
business  on August 1, 1996,  as the  record  date (the  "Record  Date") for the
determination of holders of Wismer-Martin Common Stock entitled to notice of and
to vote at the  Special  Meeting.  As of August 1, 1996,  there were  16,324,495
shares of  Wismer-Martin  Common  Stock  issued and  outstanding.  Each share of
Wismer-Martin Common Stock is entitled to one vote.


Voting Rights

     The affirmative vote by the holders of two-thirds of the outstanding shares
of  Wismer-Martin  Common Stock  entitled to vote thereon is required to approve
the Plan of Merger.  Abstentions  on a specific  proposal  will be considered as
present  but will not be counted as voting in favor of such  proposal.  However,
because the proposal to approve the Plan of Merger requires the affirmative vote
of a specified  percentage  of  outstanding  shares,  the nonvoting of shares or
abstentions  with  regard to this  proposal  will have the same  effect as votes
against the  proposal.  Holders of record of  Wismer-Martin  Common Stock on the
Record Date are entitled to one vote per share on each  proposal to be presented
to shareholders at the Special Meeting.

     Certain  shareholders  of  Wismer-Martin  Common Stock  (collectively,  the
"Majority  Shareholders"),  who  beneficially  own an aggregate  number of votes
sufficient  to approve the Plan of Merger and all other matters to be voted upon
at the  Wismer-Martin  Special  Meeting,  have each  entered  into an Option and
Voting  Agreement  with PCN (the  "Option  and Voting  Agreements")  pursuant to
which,  among  other  things,  they each have  agreed  to vote


                                       17
<PAGE>


their  shares  of  Wismer-Martin  Common  Stock in favor of the Plan of  Merger.
Accordingly,  approval  of the Plan of Merger by the  holders  of  Wismer-Martin
Common Stock is assured without the vote of any other shareholder. See "Security
Ownership of Certain  Persons and Option and Voting  Agreements" and "The Merger
- -- Interests of Certain Persons in the Merger."

     If a shareholder attends the Special Meeting, he or she may vote by ballot.
When a proxy card is returned, properly signed and dated, the shares represented
thereby will be voted in accordance with the  instructions on the proxy card. If
a shareholder does not return a signed proxy card, his or her shares will not be
voted and thus  will  have the  effect  of a vote  against  the Plan of  Merger.
Shareholders  are urged to mark the box on the proxy card to indicate  how their
shares are to be voted.  If a  shareholder  returns a signed proxy card but does
not indicate how his or her shares are to be voted,  the shares  represented  by
the proxy card will be voted  "FOR"  approval  of the Plan of Merger.  The proxy
card also confers  discretionary  authority on the individuals  appointed by the
Wismer-Martin  Board and named on the proxy card to vote the shares  represented
thereby on any other matter that is properly presented for action at the Special
Meeting.

     Any  Wismer-Martin  shareholder  who  executes and returns a proxy card may
revoke  such proxy at any time  before it is voted by (i)  notifying  in writing
Mehdi Moussavi, Secretary,  Wismer-Martin, Inc., 12828 N. Newport Highway, Mead,
Washington 99021, (ii) granting a subsequent proxy, or (iii) appearing in person
and voting at the Special Meeting. Attendance at the Special Meeting will not in
and of itself constitute revocation of a proxy.

     THE MATTERS TO BE CONSIDERED AT THE SPECIAL MEETING ARE OF GREAT IMPORTANCE
TO THE  SHAREHOLDERS  OF  WISMER-MARTIN.  SHAREHOLDERS  ARE  URGED  TO READ  AND
CAREFULLY  CONSIDER  THE  INFORMATION  PRESENTED  IN THIS  PROXY  STATEMENT  AND
PROSPECTUS AND TO COMPLETE,  DATE AND SIGN THE ACCOMPANYING  PROXY AND RETURN IT
PROMPTLY IN THE ENCLOSED POSTAGE-PREPAID ENVELOPE.


           SECURITY OWNERSHIP OF CERTAIN PERSONS AND VOTING AGREEMENTS

     As of July 31,  1996,  Wismer-Martin's  directors,  executive  officers and
their  affiliates and associates,  as a group, may be deemed to own beneficially
approximately  53.1% of the  outstanding  shares of  Wismer-Martin  Common Stock
(assuming exercise of options held by directors and executive officers). Each of
the directors and executive officers of Wismer-Martin has advised  Wismer-Martin
that he or she intends to vote or direct the vote of all the outstanding  shares
of  Wismer-Martin  Common Stock over which he or she has voting control in favor
of the Plan of Merger.  Each share of Wismer-Martin  Common Stock is entitled to
one vote.

     The Majority  Shareholders,  consisting of Ronald and Linda Holden, Stanley
T. and Beverly J. Hatch,  Georgia L. Knapp,  Gertrude L. Holden,  John F. Perez,
Ivory & Sime  Enterprise  Capital,  Glen E. and Judith L. Martin,  Thomas E. and
Maureen T. Holden,  Harry D.  Holden,  and James F. Etter,  beneficially  own an
aggregate of approximately 71% of the outstanding shares of Wismer-Martin Common
Stock  representing a number of shares with votes sufficient to approve the Plan
of Merger.  The Majority  Shareholders  have each agreed in separate  Option and
Voting Agreements with PCN (i) to vote the shares of Wismer-Martin  Common Stock
which he or she is  entitled  to vote,  in person or by  proxy,  at the  Special
Meeting, in favor of the Plan of Merger and (ii) not to sell, transfer,  tender,
assign,  pledge or  otherwise  dispose of, or grant any proxies with respect to,
such shares of Wismer-Martin Common Stock, or enter into any contract, option or
other arrangement or understanding with respect to the sale, assignment, pledge,
voting or other  disposition  of such  shares  of  Wismer-Martin  Common  Stock.
Further,   each  Option  and  Voting  Agreement  provides  that,  under  certain
circumstances,   including,   without   limitation,   the  material   breach  by
Wismer-Martin of any representation,  warranty,  covenant or agreement contained
in the Merger  Agreement or the failure of  Wismer-Martin at the Special Meeting
to obtain the vote of the holders of  two-thirds  of the  outstanding  shares of
Wismer-Martin  Common Stock, PCN may purchase the Majority  Shareholders' shares
of Wismer-Martin Common Stock for a purchase price per share equal to the Merger
Consideration,  assuming for such purpose  only that the  Effective  Time of the
Merger is the date on which such option is exercised.



                                       18
<PAGE>


            PHYSICIAN COMPUTER NETWORK, INC. AND WISMER-MARTIN, INC.
         UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

     The Unaudited Pro Forma Condensed Consolidated Statements of Operations and
Unaudited Pro Forma Condensed  Consolidated Balance Sheet give effect to (i) the
proposed  acquisition by PCN of  Wismer-Martin,  (ii) the  acquisition by PCN of
certain  assets related to the practice  management  software and other software
businesses  of CUSA  Technologies,  Inc.  (the  "CTI  Business"),  and (iii) the
completion by PCN on May 10, 1996 of the public offering of 6,440,000  shares of
its Common Stock at $10.00 per share (the "1996  Offering"),  of which 1,932,217
shares were issued by PCN to Equifax,  Inc.  ("Equifax")  upon the conversion in
full of the five year,  $10,000,000  principal amount  convertible  subordinated
promissory note issued to Equifax on February 15, 1995 (the "Equifax Note").  In
addition to the above, the Unaudited Pro Forma Condensed  Consolidated Statement
of  Operations  for the year ended  December 31, 1995 also gives effect to PCN's
February 1995 public  offering of PCN Common Stock and October 1995 Regulation S
offering of PCN Common Stock and  convertible  preferred  stock,  as well as the
acquisitions of Versyss and the PMS Business and the related financing.

     These  statements  have  been  prepared  from the  historical  consolidated
financial  statements of PCN, the CTI Business and  Wismer-Martin  and should be
read in  conjunction  with such  statements  and the related  notes.  Historical
Consolidated  Financial  Statements of PCN are incorporated  herein by reference
from PCN's Annual  report on Form 10-K for the year ended  December 31, 1995 and
PCN's  Quarterly  Report  on Form 10-Q for the  period  ended  March  31,  1996.
Historical  financial  statements  of  the  CTI  Business  are  incorporated  by
reference  from  PCN's  Current  Report on Form  8-K/A  dated  August  7,  1996.
Historical  financial  statements of Wismer-Martin are incorporated by reference
from the Wismer-Martin  Annual Report on Form 10-KSB for the year ended June 30,
1995 and  Wismer-Martin's  Quarterly  Report on Form 10-QSB for the period ended
March  31,  1996.  The  unaudited  pro  forma   information   assumes  that  the
transactions  for which pro forma effects are shown  occurred on January 1, 1995
for the Unaudited Pro Forma Condensed Consolidated  Statements of Operations and
on March 31, 1996 for the Unaudited  Pro Forma  Condensed  Consolidated  Balance
Sheet. Such pro forma  information is not necessarily  indicative of the results
which would actually have occurred had the  transactions  been in effect for the
period or on the date indicated or which may occur in the future.


                                       19
<PAGE>




   Unaudited Pro Forma Condensed Consolidated Balance Sheet -- March 31, 1996
                                     ASSETS

<TABLE>
<CAPTION>

                                           Adjustments Increase/(Decrease) Giving Effect to
                                        ------------------------------------------------------
                                            PCN                           CTI          1996         
                                         Historical  Wismer-Martin(j) Business(k)    Offering       
                                        -----------  -------------    ----------    ----------     
<S>                                     <C>             <C>          <C>           <C>             
Current Assets:
Cash and cash equivalents ..........    $ 9,814,855     $ 540,404    $        --   $41,902,164(q)  
Accounts receivable, net ...........     21,466,925       904,814      1,951,810                   
Inventories ........................      4,622,647       130,869        130,043                   
Prepaid expenses and other .........      1,607,176        36,786         42,860                   
Deferred tax asset .................      1,650,000                                                
                                        -----------     ---------     ----------    ----------     
    Total current assets ...........     39,161,603     1,612,873      2,124,713    41,902,164     
Intangible assets, net .............     52,741,240     3,367,911     10,380,467                   
 ....................................                                                               
Property and equipment, net ........      3,976,749     1,343,068        735,707                   
Investment in joint venture ........      3,009,082                                                
Other assets .......................      4,020,991        62,437         65,637                   
                                        -----------     ---------     ----------    ----------     
    Total Assets ...................   $102,909,665    $6,386,289    $13,306,524   $41,902,164     
                                        ===========     =========     ==========    ==========     

                      LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Notes payable ......................    $ 9,513,571    $       --     $   97,686   $        --      
Current portion of long-term debt ..         40,486        34,937                                  
Current portion of obligation
  under capital leases .............         77,164        36,097                                  
Accounts payable ...................      4,600,581       344,776        849,760                   
Accrued expenses and other liabilities   14,163,270       384,045        183,654            
Customer deposits ..................      3,086,807                      278,126                   
Unearned income ....................     14,617,925     1,731,334      2,601,404                   
                                        -----------     ---------     ----------    ----------     
    Total current liabilities ......     46,099,804     2,531,189      4,010,630                   
Long-term debt, net of current portion:
Other ..............................     22,470,636       786,456                                  
Obligations under capital
  leases, net of current portion ...        327,985        65,455                                  
                                        -----------     ---------     ----------    ----------     
    Total liabilities ..............     68,898,425     3,383,100      4,010,630                   
Shareholders' Equity:
Preferred stock ....................             64                                                
Common stock .......................        447,952        16,321                       45,078(q)  
 ....................................                                                               
Additional paid-in capital .........    131,209,375     4,881,193                   41,857,086(q)  
 ....................................                                                               
Excess purchase price of acquired
  subsidiary .......................                   (2,533,308)                                 
Retained earnings (Accumulated deficit) (97,646,151)      638,983      9,295,894                   
                                        -----------     ---------     ----------    ----------     
Shareholders' equity ...............     34,011,240     3,003,189      9,295,894    41,902,164     
                                        -----------     ---------     ----------    ----------     
    Total liabilities and
      shareholders' equity .........   $102,909,665    $6,386,289    $13,306,524   $41,902,164     
                                        ===========     =========     ==========    ==========     

</TABLE>


                   Unaudited Pro Forma Condensed Consolidated
                  Balance Sheet -- March 31, 1996 (Continued)
                                     ASSETS

<TABLE>
<CAPTION>

                                                            Adjustments Increase/(Decrease) Giving Effect to
                                                            ------------------------------------------------
                                                            Wismer-Martin     CTI Business
                                              Equifax        Acquisition       Acquisition
                                            Conversion       Adjustments       Adjustments       Pro Forma
                                            ----------      -------------     ------------      -----------
<S>                                         <C>            <C>               <C>              <C>         
Current Assets:
Cash and cash equivalents ..........        $       --     $ (1,980,000)(j)  $(10,100,000)(k) $ 40,177,423
Accounts receivable, net ...........                                                            24,323,549
Inventories ........................                                                             4,883,559
Prepaid expenses and other .........                                                             1,686,822
Deferred tax asset .................                                                             1,650,000
                                            ----------       ----------        ----------      -----------
    Total current assets ...........                         (1,980,000)      (10,100,000)      72,721,353
Intangible assets, net .............                         11,494,722(j)     11,334,573(k)
 ....................................                         (3,367,911)(r)   (10,380,467)(r)   75,570,535
Property and equipment, net ........                            450,000(s)                       6,505,524
Investment in joint venture ........                                                             3,009,082
Other assets .......................                                                             4,149,065
                                            ----------       ----------        ----------      -----------
    Total Assets ...................        $       --      $ 6,596,811      $ (9,145,894)    $161,955,559
                                            ==========       ==========        ==========      ===========

                      LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Notes payable ......................        $       --      $        --      $         --     $  9,611,257
Current portion of long-term debt ..                                                                75,423
Current portion of obligation
  under capital leases .............                                                               113,261
Accounts payable ...................                                                             5,795,117
Accrued expenses and other liabilities                          250,000(j)        150,000(k)    15,130,969
Customer deposits ..................                                                             3,364,933
Unearned income ....................                                                            18,950,663
                                            ----------       ----------        ----------      -----------
    Total current liabilities ......                            250,000           150,000       53,041,623
Long-term debt, net of current portion:
Other ..............................       (10,000,000)(q)                                      13,257,092
Obligations under capital
  leases, net of current portion ...                                                               393,440
                                            ----------       ----------        ----------      -----------
    Total liabilities ..............       (10,000,000)         250,000           150,000       66,692,155
Shareholders' Equity:
Preferred stock ....................                                                                    64
Common stock .......................            19,322(q)       (16,321)(t)
 ....................................                              9,350(m)                         521,702
Additional paid-in capital .........         9,980,678(q)    (4,881,193)(t)
 ....................................                          9,340,650(m)                     192,387,789
Excess purchase price of acquired
  subsidiary .......................                          2,533,308(t)                             --
Retained earnings (Accumulated deficit)                        (638,983)(t)    (9,295,894)(t)  (97,646,151)
                                            ----------       ----------        ----------      -----------
Shareholders' equity ...............        10,000,000        6,346,811        (9,295,894)      95,263,404
                                            ----------       ----------        ----------      -----------
    Total liabilities and
      shareholders' equity .........       $        --      $ 6,596,811       $(9,145,894)    $161,955,559
                                            ==========       ==========        ==========      ===========

</TABLE>

- ----------

See accompanying notes to unaudited pro forma condensed  consolidated  financial
statements.


                                       20
<PAGE>


              UNAUDITED PRO FORMA CONDENSED STATEMENT OF OPERATIONS
                        Three Months Ended March 31, 1996

<TABLE>
<CAPTION>

                                                     Adjustments Increase/(Decrease) Giving Effect to
                                          ---------------------------------------------------------------------
                                              PCN                                   CTI                1996       
                                           Historical       Wismer-Martin(j)     Business(k)         Offering     
                                          ------------      ---------------     ------------       ------------   
<S>                                       <C>                <C>                <C>                <C>            
Revenues ..............................   $ 21,026,948       $  2,282,639       $  3,013,872       $         --   
                                          ------------       ------------       ------------       ------------   
Costs and Expenses:
Cost of revenues ......................      8,794,892          1,018,914          1,499,315                      
Research and development ..............      1,111,487            140,291            519,186                      
Selling and marketing .................      1,704,769            351,035            879,798                      
General and administrative ............      4,084,531            660,710          1,801,893                      
 . .....................................                                                                           
                                          ------------       ------------       ------------       ------------   
 . .....................................     15,695,679          2,170,950          4,700,192            247,708   
Interest (income) expense:
  Interest income .....................        (59,508)           (22,931)           (82,439)
  Interest expense ....................        695,118             24,309           (150,000)(i)        569,427
                                          ------------       ------------       ------------       ------------   
 . .....................................        635,610              1,378           (150,000)           486,988
Income (loss) before income tax expense
  and loss on equity investment .......      4,695,659            110,311         (1,686,320)           150,000   
Income tax expense ....................                                                                           
                                          ------------       ------------       ------------       ------------   
Income before loss on equity investment      3,709,659            110,311         (1,686,320)           150,000   
Loss on equity investment, net of taxes       (395,000)          (395,000)
                                          ------------       ------------       ------------       ------------   
Net income (loss) .....................   $  3,314,659       $    110,311       $ (1,686,320)      $         --   
                                          ============       ============       ============       ============   

Primary and Fully Diluted earnings
  (loss) per Common Share:
Earnings (loss) per Common Share ......   $       0.07                                                            
                                          ============                                                            

Primary weighted average number
  of common shares outstanding ........     49,864,464                                                4,507,783(h)
                                          ============                                             ============   

Fully Diluted weighted average number
  of common shares outstanding ........     50,102,434                                                4,507,783(h)
                                          ============                                             ============   
                                                                                                                  

</TABLE>



        UNAUDITED PRO FORMA CONDENSED STATEMENT OF OPERATIONS (Continued)
                        Three Months Ended March 31, 1996

<TABLE>
<CAPTION>

                                                  Adjustments Increase/(Decrease) Giving Effect to
                                          ---------------------------------------------------------------
                                                             Wismer-Martin   CTI Business
                                            Equifax           Acquisition     Acquisition
                                           Conversion         Adjustments     Adjustments     Pro Forma
                                          ------------       ------------    ------------    ------------
<S>                                       <C>                <C>            <C>              <C>         
Revenues ..............................   $         --       $         --   $          --    $ 26,323,459
                                          ------------       ------------    ------------    ------------
Costs and Expenses:
Cost of revenues ......................                                                        11,313,121
Research and development ..............                                                         1,770,964
Selling and marketing .................                                                         2,935,602
General and administrative ............                           247,708(l)      214,580(l)
 . .....................................                                          (145,975)(o)   6,863,447
                                          ------------       ------------    ------------    ------------
 . .....................................         68,605         22,883,134
Interest (income) expense:
  Interest income .....................                                                           (82,439)
  Interest expense ....................       (150,000)(i)                                        569,427
                                          ------------       ------------    ------------    ------------
 . .....................................       (150,000)                                           486,988
Income (loss) before income tax expense
  and loss on equity investment .......        150,000           (247,708)        (68,605)      2,953,337
Income tax expense ....................                                          986,0000         986,000
                                          ------------       ------------    ------------    ------------
Income before loss on equity investment        150,000           (247,708)        (68,605)      1,967,337
Loss on equity investment, net of taxes                                                          (395,000)
                                          ------------       ------------    ------------    ------------
Net income (loss) .....................   $    150,000       $   (247,708)   $    (68,605)   $  1,572,337
                                          ============       ============    ============    ============

Primary and Fully Diluted earnings
  (loss) per Common Share:
Earnings (loss) per Common Share ......                                                      $       0.03(p)
                                                                                             ============

Primary weighted average number
  of common shares outstanding ........      1,932,217(i)         935,000(m)                   57,239,464
                                          ============       ============                    ============

Fully Diluted weighted average number
  of common shares outstanding ........      1,932,217(i)         935,000(m)                   57,477,434
                                          ============       ============                    ============
</TABLE>

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

See  accompanying  notes  to the  unaudited  pro  forma  condensed  consolidated
financial statements.


                                       21
<PAGE>


              UNAUDITED PRO FORMA CONDENSED STATEMENT OF OPERATIONS
                          Year Ended December 31, 1995

<TABLE>
<CAPTION>

                                                Adjustments Increase/(Decrease) Giving Effect to
                               ---------------------------------------------------------------------------------------
                                                                             Versyss/PMS                                 
                                   PCN            PMS          Versyss       Acquisition          1996         Equifax   
                               Historical(a) Acquisition(b) Acquisition(c)   Adjustments        Offering     Conversion  
                               -----------    ---------      ----------      -----------       ----------     ---------  
<S>                           <C>            <C>            <C>             <C>               <C>            <C>         
Revenues ...............      $ 41,805,342   $3,067,872     $44,398,000     $         --      $        --    $       --  
                               -----------    ---------      ----------      -----------       ----------     ---------  
Costs and Expenses:
Cost of revenues .......        16,288,953    1,341,797      27,532,000                                                  
Research and development         2,219,223      563,221       1,806,000                                                  
Selling and marketing ..         3,038,069      371,739       5,340,000                                                  
General and administrative      13,238,269    1,187,924       8,690,000        3,864,532(d)                              
 ........................                                                                                                 
Acquired technology 
  in process ...........        14,516,000                                   (14,516,000)(e)                             
Restructuring ..........         3,072,450                                                                               
Write-down of assets and
  other charges.........         1,477,000                                                                               
                               -----------    ---------      ----------      -----------       ----------     ---------  
                                53,849,964    3,464,681      43,368,000      (10,651,468)                                
Interest (income) expense:
  Interest income ......          (577,039)     (12,615)                                                                 
  Interest expense .....         1,451,604                    2,183,000          901,903(f)                    (525,000)
                               -----------    ---------      ----------      -----------       ----------     ---------  
                                   874,565      (12,615)      2,183,000          901,903                       (525,000) 
Income (loss) before income
   tax expense (benefit) and
  extraordinary item....       (12,919,187)    (384,194)     (1,153,000)       9,749,565                        525,000  
Income tax expense (benefit)    (1,419,000)      13,145         168,000                                                  
                               -----------    ---------      ----------      -----------       ----------     ---------  
Income (loss) available to
  common shareholders
  before extraordinary item   $(11,500,187)  $ (397,339)    $(1,321,000)    $  9,749,565      $        --    $  525,000  
                               ===========    =========      ==========      ===========       ==========     =========  

Earnings (loss) per
  Common Share:
Before extraordinary item           $(0.29)                                                                              
                               ===========                                                                               

Weighted average number of
  common shares outstanding     40,068,406                                     2,622,781(g)     4,507,783(h) 1,932,217(i)
                               ===========                                   ===========       =+========    =========   

</TABLE>


        UNAUDITED PRO FORMA CONDENSED STATEMENT OF OPERATIONS (Continued)
                          Year Ended December 31, 1995

<TABLE>
<CAPTION>

                                                Adjustments Increase/(Decrease) Giving Effect to
                              -------------------------------------------------------------------------------
                                             Wismer-Martin                     CTI Business
                              Wismer-Martin   Acquisition     CTI Business     Acquisition
                               Acquisition(j) Adjustments     Acquisition(k)   Adjustments         Pro Forma
                              --------------  -----------     ------------      ----------        -----------
<S>                            <C>           <C>              <C>             <C>                <C>         
Revenues ...............       $10,021,490   $        --      $12,467,346     $(2,667,432)(n)    $109,092,618
                                ----------    ----------       ----------      ----------         -----------
Costs and Expenses:
Cost of revenues .......         4,103,747                      4,880,221      (2,120,608)(n)      52,026,110
Research and development           545,608                      1,377,086                           6,511,138
Selling and marketing ..         1,714,104                      2,125,033                          12,588,945
General and administrative       3,057,950     1,075,831(l)     4,172,287         965,322(l)
 ........................                                                         (583,900)(o)      35,668,215
Acquired technology 
  in process ...........                                                                                   --
Restructuring ..........                                                                            3,072,450
Write-down of assets and
  other charges.........                                                                            1,477,000
                                ----------    ----------       ----------      ----------         -----------
                                 9,421,409     1,075,831       12,554,627      (1,739,186)        111,343,858
Interest (income) expense:
  Interest income ......           (27,514)                                                          (617,168)
  Interest expense .....           343,319                                                          4,354,826
                                ----------    ----------       ----------      ----------         -----------
                                   315,805                                                          3,737,658
Income (loss) before income
   tax expense (benefit) and
  extraordinary item....           284,276    (1,075,831)         (87,281)       (928,246)         (5,988,898)
Income tax expense (benefit)         1,021                                                         (1,236,834)
                                ----------    ----------       ----------      ----------         -----------
Income (loss) available to
  common shareholders
  before extraordinary item    $   283,255   $(1,075,831)       $ (87,281)    $  (928,246)       $ (4,752,064)
                                ==========    ==========       ==========      ==========         ===========

Earnings (loss) per
  Common Share:
Before extraordinary item                                                                              $(0.09)(p)
                                                                                                  ===========

Weighted average number of
  common shares outstanding                      935,000(m)                                        50,066,187
                                              ==========                                          ===========

</TABLE>

- ----------

See  accompanying  notes  to the  unaudited  pro  forma  condensed  consolidated
financial statements.



                                       22
<PAGE>



         NOTES TO PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)



(a)  Includes the  operations of the PMS Business from April 24, 1995,  the date
     of  acquisition  (see note (b) below) and the  operations  of Versyss  from
     October 27, 1995, the date of acquisition (see note (c) below).

(b)  Reflects the  operations  of the PMS Business from January 1, 1995 to April
     24,  1995.  On April 24, 1995, a  wholly-owned  subsidiary  of PCN acquired
     substantially  all of the assets of the PMS  Business  for  $4,861,000,  of
     which  $2,861,000 was paid in cash and $2,000,000 was paid in the form of a
     one year 10%  interest  bearing  note (which note was paid in full on April
     24, 1996). In addition,  PCN assumed  $3,009,000 of certain  liabilities of
     the PMS  Business,  primarily  related to  software  support  and  hardware
     maintenance agreements.

(c)  Reflects  the  operations  of Versyss  from  January 1, 1995 to October 27,
     1995. On October 27, 1995,  PCN acquired all of the issued and  outstanding
     capital stock of Versyss,  pursuant to a merger agreement,  for $12,333,000
     in cash and  $11,750,000  in the form of a two year,  11% interest  bearing
     note.

(d)  Reflects the prorated amortization of the PMS Business and Versyss acquired
     intangible  assets,  with the exception of Acquired  technology in process,
     based on the estimated  useful lives  established in the table in Note 3 to
     the  Consolidated  Financial  Statements of PCN as previously  disclosed in
     PCN's  Annual  Report on Form 10-K for the year ended  December  31,  1995,
     which are incorporated herein by reference.  Included within PCN Historical
     is $421,365 of PMS Business-related  amortization expense for the period of
     April 24, 1995 to  December  31,  1995,  and  $722,735  of  Versyss-related
     amortization  expense for the period of October  27,  1995 to December  31,
     1995. The pro forma acquisition  amortization adjustment therefore consists
     of the following:
<TABLE>

<S>                                                                                  <C>        
Amortization of PMS acquired intangible assets (Jan.  1 to April 24, 1995)........   $   210,692
Amortization of Versyss acquired intangible assets (Jan.  1 to October 27, 1995)..     3,653,840
                                                                                     -----------
Total adjustment..................................................................   $ 3,864,532
                                                                                     ===========
</TABLE>

(e)  With the help of an appraiser,  PCN allocated  $14,516,000  of the purchase
     price of the Versyss  acquisition  to Acquired  technology in process which
     was recorded as an expense in the year ended December 31, 1995. This charge
     is   non-recurring   and  unusual  and,  as  it  relates  directly  to  the
     acquisition,   is  excluded  from  the  unaudited  pro  forma  consolidated
     statement of operations.

(f)  Reflects  accrued  interest  expense on the  following  acquisition-related
     indebtedness:

<TABLE>
<S>                                                                                  <C>        
10% Interest on $2,000,000 note issued in connection with the
acquisition of the PMS Business (Jan 1 to April 24, 1995).........................   $    66,667

11% Interest on $11,750,000 note issued in connection with the
Versyss acquisition (Jan.  1 to Oct. 27, 1995)....................................     1,077,083
                                                                                     -----------

Subtotal..........................................................................   $ 1,143,750

Less: Interest paid to Mr. Jeffry M. Picower (the "Investor")
which would have been avoided if the February 1995 Offering had
occurred on January 1, 1995.......................................................      (241,847)
                                                                                     -----------
Total adjustment to interest expense related to
the acquisitions of Versyss and the PMS Business..................................     $ 901,903
                                                                                     ===========
</TABLE>

(g)  Reflects  the  increase  in the  weighted  average  number of shares of PCN
     Common  Stock  outstanding  after  giving  effect  to (i) the  issuance  of
     6,250,000 shares of PCN Common Stock pursuant to PCN's February 1995 public
     offering  and (ii) the  issuance of  1,902,748  shares of PCN Common  Stock
     pursuant to the October 1995 Regulation S offering.

                                       23
<PAGE>

(h)  Reflects  the  increase  in the  weighted  average  number of shares of PCN
     Common  Stock  outstanding  after  giving  effect  to the  issuance  of the
     4,507,783  shares of PCN  Common  Stock  sold by PCN  pursuant  to the 1996
     Offering.

(i)  Reflects the reversal of interest  expense incurred on the Equifax Note and
     an increase in the  weighted  average  number of shares of PCN Common Stock
     outstanding  after giving effect to the conversion of the Equifax Note into
     1,932,217 shares of PCN Common Stock.

(j)  Reflects the  operations of  Wismer-Martin  for the year ended December 31,
     1995 and the three  months  ended March 31,  1996 and the balance  sheet of
     Wismer-Martin as of March 31, 1996. On June 20, 1996, PCN and Wismer-Martin
     signed a  definitive  agreement  whereby PCN will acquire all of the issued
     and outstanding  capital stock of Wismer-Martin  for $1,980,000 in cash and
     935,000  shares of Common  Stock of PCN. The number of shares is subject to
     adjustment  depending on variations in the Market Price of PCN Common Stock
     on the third business day  immediately  preceding the  transaction.  If the
     aggregate  Market Price of the Stock  Consideration is less than $9,350,000
     ($10.00 per share) on the third  business  day  immediately  preceding  the
     Effective  Time, then the Stock  Consideration  shall be increased to equal
     such number of shares of PCN Common Stock as has an aggregate  market value
     of  $9,350,000.  Likewise,  if the  aggregate  Market  Price  of the  Stock
     Consideration is greater than  $11,453,750  ($12.25 per share) on the third
     business day  immediately  preceding  the  Effective  Time,  then the Stock
     Consideration  shall be  decreased  to equal  such  number of shares of PCN
     Common Stock as has an aggregate market value of $11,453,750.  In addition,
     if the  Market  Price  of  PCN  Common  Stock  on the  third  business  day
     immediately preceding the Effective Time is less than or equal to $9.00 per
     share,  then, at PCN's option,  in lieu of the Cash  Consideration  and the
     Stock Consideration, the "Merger Consideration" shall be an amount equal to
     the Cash Option of $14,000,000.

     Assuming the Cash Option is not exercised,  the purchase price is allocated
     as follows (assuming a $10.00 price per share of PCN Common Stock):
<TABLE>

              <S>                                                                    <C>          <C>
              Consideration (including liabilities assumed):
              Cash................................................................   $ 1,980,000
              PCN Common Stock issued.............................................     9,350,000
              Liabilities assumed.................................................     3,383,100
              Accounting and legal costs..........................................       250,000
                                                                                      ----------
                  Total Purchase Price............................................                $ 14,963,100
                                                                                                  ============
              Allocation of Purchase Price:
              Accounts Receivable and Inventory...................................                  $1,035,683
              Property, equipment and other assets, including cash................                   2,432,695
              Intangible assets:
                Profit on support and update agreements (1 year life).............        85,000
                Profit on future support and update agreements (4 year life)......       537,000
                Acquired software products (3 year life)..........................       494,000
                Other intangible assets (includes customer list,
                 and goodwill) (15 year life).....................................    10,378,722
                                                                                      ----------
                  Total Intangible assets.........................................                  11,494,722
                                                                                                   -----------
                                                                                                  $ 14,963,100
                                                                                                  ============
</TABLE>

(k)  Reflects the operations of the CTI Business for the year ended December 31,
     1995 and the three months ended March 31, 1996 and the balance sheet of the
     CTI  Business  as of  March  31,  1996.  On July  3,  1996,  PCN  purchased
     substantially all of the assets of the medical practice management software
     business and certain other software  businesses of CUSA Technologies,  Inc.
     for $10,100,000 in cash. The purchase price is allocated as follows:

                                       24
<PAGE>

<TABLE>
              <S>                                                                   <C>           <C>
              Consideration (including liabilities assumed):
              Cash................................................................  $ 10,100,000
              Liabilities assumed.................................................     4,010,630
              Accounting and legal costs..........................................       150,000
                                                                                     -----------
                  Total Purchase Price............................................                $ 14,260,630
                                                                                                   ===========
              Allocation of Purchase Price:
              Accounts Receivable and Inventory...................................                 $ 2,081,853
              Equipment and other assets, including cash..........................                     844,204
              Intangible assets:
                Profit on support and update agreements (1 year life).............       107,000
                Profit on future support and update agreements (4 year life)......       599,000
                Other intangible assets (includes customer list,
                 and goodwill) (15 year life).....................................    10,628,573
                                                                                     -----------
                  Total Intangible assets.........................................                  11,334,573
                                                                                                   -----------
                                                                                                  $ 14,260,630
                                                                                                   ===========
</TABLE>


(l)  Reflects the prorated  amortization  of the acquired  intangible  assets of
     Wismer-Martin  and the CTI Business,  based on the useful lives established
     in notes (j) and (k) above.

(m)  Reflects the increase in the  weighted  average  number of shares of Common
     Stock  outstanding after giving effect to the issuance of 935,000 shares of
     PCN Common Stock,  valued at $10.00 per share,  pursuant to the acquisition
     of  Wismer-Martin  by PCN. If the Market  Price of PCN Common  Stock on the
     third business day  immediately  preceding the Effective Time was $9.00 per
     share, then the Stock Consideration would be increased to 1,038,889 shares.
     The  resulting  increase  of 103,889  shares of PCN Common  Stock would not
     change pro forma  earnings  per share for the three  months ended March 31,
     1996 and would not  change  the pro forma loss per share for the year ended
     December  31,  1995.  If the Market  Price of PCN Common Stock on the third
     business day immediately preceding the Effective Time is less than or equal
     to  $9.00  per  share,   then,  at  PCN's  option,  in  lieu  of  the  Cash
     Consideration and the Stock Consideration, the "Merger Consideration" shall
     be an amount equal to the Cash Option of  $14,000,000  and,  therefore,  no
     shares of PCN Common Stock would be issued. If this situation should occur,
     and PCN exercised its option to pay $14,000,000 in cash in lieu of the Cash
     Consideration and Stock  Consideration,  the resulting  decrease of 935,000
     shares of PCN Common  Stock would not change pro forma  earnings  per share
     for the three  months  ended  March 31,  1996 and would not  change the pro
     forma loss per share for the year ended December 31, 1995.

(n)  Represents  the  elimination  of revenue and cost of sales related to sales
     transactions  between Versyss and the CTI Business prior to the acquisition
     of Versyss by PCN.

(o)  Reflects the elimination of the amortization of intangible  assets recorded
     in the historical results of operations of the CTI Business.

(p)  For the year ended  December  31,  1995,  the  assumed  exercise of certain
     outstanding  options and warrants have not been included in the calculation
     of  unaudited  pro forma loss per common  share as they are  anti-dilutive,
     thus making  unaudited  pro forma primary and fully diluted loss per common
     share the same.  For the three  months  ended March 31,  1996,  the assumed
     exercise of dilutive  options and  warrants and the assumed  conversion  of
     outstanding  shares  of PCN's  Series  A  convertible  non  dividend-paying
     preferred  stock has been  included in the  calculation  of the primary and
     fully-diluted weighted average number of common shares outstanding.

(q)  The following table details the net proceeds from the 1996 Offering and its
     effect on the Unaudited Pro Forma Condensed  Consolidated  Balance Sheet at
     March 31, 1996:

                                       25
<PAGE>

<TABLE>
<CAPTION>
                                                           Long-term
                                                         debt, net of       Common     Paid-In
                                            Cash        current portion      Stock     Capital
                                          ----------      -----------      -------    ----------
<S>                                      <C>             <C>               <C>       <C>        
Gross Proceeds from the issuance
  of 4,507,783 shares of Common
  Stock at $10.00 per share...........   $45,077,830                       $45,078   $45,032,752
1996 Offering Expenses, including
  underwriting discounts
  and commissions.....................    (3,175,666)                                 (3,175,666)
Conversion of $10,000,000 Equifax
  Note into Common Stock..............                   $(10,000,000)      19,322     9,980,678
                                          ----------      -----------      -------    ----------
Total pro forma adjustment............   $41,902,164     $(10,000,000)     $64,400   $51,837,764
                                          ==========      ===========      =======    ==========
</TABLE>

(r)  Represents  the  elimination  of intangible  assets  related to capitalized
     proprietary  software  costs  recorded  by both  Wismer-Martin  and the CTI
     Business which has no continuing fair market value to PCN.

(s)  Represents the estimated fair value adjustment to the net book value of the
     Wismer-Martin land and building assets.

(t)  Reflects the  elimination of the prior ownership of  Wismer-Martin  and the
     CTI Business.




                                       26
<PAGE>



                                   THE MERGER

     The  following is a brief  summary of certain  aspects of the Merger.  This
summary  does not purport to be complete  and is  qualified  in its  entirety by
reference to the Merger Agreement, which is attached to this Proxy Statement and
Prospectus as Annex A and is incorporated herein by reference.

Background of the Merger

     In the  process of  formulating  its  business  and  financial  plans,  the
Wismer-Martin  Board and its senior  management  regularly examine the company's
long-term  prospects in light of general  economic and business  conditions  and
management's forecasts for the company's business.

     During  the  early  part  of  1995,  in the  course  of its  planning,  the
Wismer-Martin  Board and senior  management  observed  the growing  influence of
larger,  better  financed  companies in the practice  management and health care
information  services business.  As a result, the Wismer-Martin Board and senior
management came to believe that, given  Wismer-Martin's  financial position,  as
well as its relative size and market penetration in the practice  management and
health care  information  services  market,  in order to obtain the resources to
expand its business base,  Wismer-Martin  should seek to position  itself with a
strong strategic  partner which could provide  Wismer-Martin  with the resources
necessary to compete with its larger, better financed competitors.  Accordingly,
during the early part of 1995,  Wismer-Martin management held discussions with a
number  of  larger,   well  financed  companies  having  greater  presence  than
Wismer-Martin in the health care information system marketplace.  As a result of
such  discussions,   marketing   relationships  were  established  with  several
companies,  including IBM and Digital  Equipment Corp. In addition,  information
was exchanged with GTE regarding the  possibility of  establishing a partnership
or other strategic alliance with Wismer-Martin.

     By the  latter  part of  1995,  the  Wismer-Martin  Board  and  its  senior
management  had concluded  that the  company's  efforts to establish a strategic
partnership or alliance had not significantly expanded  Wismer-Martin's business
base. To address this  situation,  Wismer-Martin's  senior  management  began to
consider  and  discuss  with  the   Wismer-Martin   Board  potential   strategic
alternatives,  including  the possible  sale of the  Company.  During this time,
senior  management of PCN  contacted  Ronald  Holden,  Chairman of the Board and
Chief Executive  Officer of  Wismer-Martin,  to express  interest in exploring a
possible  acquisition of Wismer-Martin by PCN. Mr. Holden disclosed this contact
to the Wismer-Martin Board at its regular meeting on November 7, 1995.

     In February  1996,  Mr.  Holden met with Henry Green,  President  and Chief
Executive Officer of PCN, to discuss the potential  interests of both parties in
a possible  acquisition of  Wismer-Martin by PCN. The discussions at the meeting
centered mainly on growth and expansion potential,  business philosophy, and the
integration of different  corporate cultures.  As a result of that meeting,  the
parties signed a confidentiality agreement, to permit additional discussions and
the  provision  to PCN by  Wismer-Martin  of  non-pubic  information  concerning
Wismer-Martin.

     In March 1996,  Mr. Holden again met with Mr. Green to discuss  further the
possibility  of an  acquisition.  As  part of this  meeting,  certain  financial
information of Wismer-Martin was reviewed.

     During the next few weeks,  telephone  calls  among  management  of PCN and
management of Wismer-Martin  took place on a frequent basis to discuss the terms
on which PCN and Wismer-Martin might be willing to consummate an acquisition. In
addition,  the companies  conducted due diligence  regarding one another. On May
20, 1996, PCN forwarded to Mr. Holden, on behalf of Wismer-Martin,  a draft of a
letter of intent  describing  the terms on which PCN would be willing to acquire
Wismer-Martin.  During the course of the next week,  the terms of such letter of
intent were discussed and refined by the management of PCN and Wismer-Martin.

     On May 23, 1996,  Wismer-Martin  held a telephonic  meeting of its board of
directors  to  consider  and discuss the terms and  provisions  of the  proposed
letter of intent,  including the  description  contained  therein  regarding the
terms  of a  definitive  merger  agreement.  As part of those  discussions,  the
Wismer-Martin  Board  considered  a number of factors  affecting  the  Company's
future business prospects,  including,  among others, the increasing competition
in the physician and hospital  information  system market place and the size and
financial   resources  of   Wismer-Martin's   competitors.   In  addition,   the
Wismer-Martin Board was advised and considered the fact that the proposed letter
of intent would place certain binding obligations on Wismer-Martin substantially
equivalent to those contained in a definitive merger agreement. Accordingly, the
Wismer-Martin  Board considered the proposed letter of intent to the same extent
as they would have in reviewing and  considering  the terms and  conditions of a
definitive  merger  agreement.  Following a discussion  among the members of the
board, the  Wismer-Martin  Board  



                                       27
<PAGE>

unanimously  voted to authorize  management to execute the letter  agreement and
enter  into a  definitive  merger  agreement  on  terms  consistent  with  those
contained  in the letter of intent,  with such  changes and  additions as senior
management and legal counsel to Wismer-Martin deemed appropriate. The definitive
Merger Agreement was executed by the parties on June 20, 1996.

Recommendations of the Boards of Directors;
Effects of and Reasons for the Merger

     The Wismer-Martin  Board believes that the terms of the Merger are fair to,
and in the best interest of,  Wismer-Martin and its  shareholders.  Accordingly,
the  Wismer-Martin  Board has unanimously  approved the Merger Agreement and the
transactions  contemplated  thereby by the unanimous  vote of those present at a
meeting held for such purpose and  recommends  approval of the Plan of Merger by
Wismer-Martin shareholders.

     This  recommendation  is the result of the  extensive  process of exploring
strategic alternatives for Wismer-Martin described above under "-- Background of
the Merger." As a result of that process,  the Wismer-Martin Board believes that
the Merger is the best available alternative for Wismer-Martin shareholders.

     The  Wismer-Martin  Board  believes  that the Merger  offers  Wismer-Martin
shareholders  the opportunity to participate in an enterprise with the financial
strength and  geographic  and market  diversity  necessary to  capitalize on the
opportunities in the changing and increasingly  competitive  practice management
and healthcare  information  software business and that, without the Merger or a
similar transaction,  Wismer-Martin would lack the financial and other resources
to maximize its competitive potential. Further, the Wismer-Martin Board believes
that,  in the  event  that the Cash  Option  is  exercised  by PCN,  the  Merger
Consideration to be paid in connection  therewith  represents fair consideration
to the Wismer-Martin shareholders.

     In reaching its conclusions,  the  Wismer-Martin  Board  considered,  among
other  things,  (i) the Merger  Agreement,  the Plan of Merger and the  proposed
specific  terms  of  the  Merger,  (ii)  information  concerning  the  financial
performance,  condition,  business  operations  and prospects of each of PCN and
Wismer-Martin,  (iii)  historical  market  prices and trading  information  with
respect  to  Wismer-Martin  Common  Stock  and PCN  Common  Stock  and  (iv) the
potential efficiencies, economies of scale and synergies that may be realized as
a result of the combination of Wismer-Martin's and PCN's business.  In addition,
the members of the  Wismer-Martin  Board reviewed with senior  management  their
views on Wismer-Martin's  potential as an independent company, and in particular
Wismer-Martin's  ability to compete with larger,  national  practice  management
software and health care information service companies.  The Wismer-Martin Board
again  concluded  that  Wismer-Martin  by itself  lacked the financial and other
resources to maximize its competitive potential.

     The  Wismer-Martin  Board  unanimously  approved the Plan of Merger and the
transactions   contemplated   thereby,   and  recommends  that  shareholders  of
Wismer-Martin vote "FOR" approval of the Plan of Merger.

General Description of the Merger

     Pursuant  to the  Merger  Agreement,  Merger  Sub will  merge with and into
Wismer-Martin,   the  separate   existence   of  Merger  Sub  will  cease,   and
Wismer-Martin  will be the  surviving  corporation  and  become  a  wholly-owned
subsidiary  of PCN (the  "Merger").  At the  effective  time of the Merger  (the
"Effective  Time"),  each  share  of  Wismer-Martin   Common  Stock  issued  and
outstanding   immediately   prior  to  Effective  Time,  except  those  held  by
shareholders  who validly  perfect  dissenters'  rights under the WBCA,  will be
converted into the right to receive (the "Merger Consideration"):  (i) an amount
in cash (the "Cash  Consideration")  equal to the quotient  obtained by dividing
(x)  $1,980,000  by (y) the  number  of  shares of  Wismer-Martin  Common  Stock
outstanding  immediately prior to the Effective Time (the "Common Share Number")
and (ii) subject to the  adjustments  described  below,  that number (the "Stock
Consideration")  of shares of PCN's Common Stock, par value $.01 per share ("PCN
Common  Stock"),  equal to the quotient  obtained by dividing (x) 935,000 by (y)
the Common  Share  Number.  In  particular,  and in addition to the  adjustments
described  in the  following  paragraph,  in the event that the Market Price (as
defined  below)  of PCN  Common  Stock on the  third  business  day prior to the
Effective Time is less than or equal to $9.00 per share,  then, at PCN's option,
in lieu of the Cash Consideration and Stock  Consideration  described above, the
"Merger  Consideration"  shall be an amount in cash equal to (the "Cash Option")
(x) $14,000,000 divided by (y) the Common Share Number.

     The  Merger  Agreement  provides  that the Stock  Consideration  (described
above) will be adjusted under the following circumstances:  (i) if the aggregate
Market  Price of the Stock  Consideration  is less than  $9,350,000  ($10.00 


                                       28
<PAGE>

per share) on the third business day  immediately  preceding the Effective Time,
then the Stock  Consideration  shall be increased to equal such number of shares
of PCN Common Stock as has an aggregate  market value of $9,350,000  and (ii) if
the  aggregate  Market  Price  of  the  Stock   Consideration  is  greater  than
$11,453,750  ($12.25 per share) on the third business day immediately  preceding
the Effective  Time,  then the Stock  Consideration  shall be decreased to equal
such number of shares of PCN Common  Stock as has an  aggregate  market value of
$11,453,750.  The Merger Agreement contains an additional  provision intended to
preserve  the  tax-free  reorganization  treatment of the Merger (so long as the
Cash Option is not exercised),  such that the receipt of the Stock Consideration
by  Wismer-Martin  shareholders  would be on a tax-free  basis,  by,  based upon
certain  assumptions,  limiting the  aggregate  amount of cash to be received by
both the dissenting and  non-dissenting  shareholders of Wismer-Martin to 20% or
less of the aggregate  value of the  consideration  (both cash and shares of PCN
Common  Stock) to be  received  by both the  dissenting  and the  non-dissenting
shareholders  of  Wismer-Martin.   This  provision  may  result  in  adjustments
decreasing the aggregate  amount of cash and increasing the aggregate  number of
shares of PCN Common Stock to be received by the non-dissenting  shareholders of
Wismer-Martin in the Merger.  This adjustment would be expected to occur only if
a significant  number of  shareholders  exercise  dissenters'  rights.  See "The
Merger -- Dissenters'  Rights." No assurances can be given that such  adjustment
will ensure the Merger to qualify as a tax-free reorganization.  See "The Merger
- -- Certain  Federal  Income Tax  Consequences  of the  Merger." As used  herein,
"Market  Price" means the average of the closing  price of a share of PCN Common
Stock as reported on the NASDAQ  Stock  Market  during the fifteen  (15) trading
days immediately preceding the date of determination.

     See  "Comparison  of  Shareholder  Rights"  for a  description  of  certain
material  differences  between the rights of holders of PCN Common Stock and the
rights of holders of Wismer-Martin Common Stock.

Closing; Effective Time

     The closing of the  transactions  contemplated by the Merger Agreement will
take place,  on a date to be specified  by the parties,  which shall be no later
than the second business day immediately following the date on which the last of
the conditions set forth in the Merger  Agreement is satisfied or waived,  or at
such other time as PCN and Wismer-Martin agree. The Merger will become effective
upon the issuance of a  certificate  of merger by the  Secretary of State of the
State of Washington pursuant to the WBCA.

Exchange of Stock Certificates

     As soon as reasonably  practicable after the Effective Time, American Stock
Transfer & Trust Company,  which has been  designated as the exchange agent (the
"Exchange  Agent"),   will  mail  transmittal   instructions  and  a  letter  of
transmittal  to each  holder of  Wismer-Martin  Common  Stock.  The  transmittal
instructions  will describe the procedures for  surrendering  certificates  that
prior to the Merger represented  Wismer-Martin Common Stock (the "Certificates")
in exchange for cash and  certificates  representing  PCN Common Stock (the "PCN
Certificates").  WISMER-MARTIN SHAREHOLDERS SHOULD NOT SUBMIT THEIR CERTIFICATES
FOR EXCHANGE  UNLESS AND UNTIL THEY HAVE RECEIVED THE  TRANSMITTAL  INSTRUCTIONS
AND LETTER OF TRANSMITTAL FROM THE EXCHANGE AGENT.

     When a Wismer-Martin  shareholder  delivers his or her  Certificates to the
Exchange  Agent along with a properly  executed  letter of  transmittal  and any
other  required   documents,   such   Certificates  will  be  canceled  and  the
Wismer-Martin  shareholder  will  receive  payment  of an amount in cash  (which
amount shall  include  payment in cash in lieu of any  fractional  shares of PCN
Common  Stock)  and PCN  Certificates  representing  the number of shares of PCN
Common Stock to which the Wismer-Martin shareholder is entitled under the Merger
Agreement.  If any cash or PCN Certificate is to be issued to or in a name other
than  that  in  which  the  corresponding  Certificate  is  registered,  it is a
condition to the exchange of the Certificate that the Wismer-Martin  shareholder
comply with applicable transfer  requirements and pay any applicable transfer or
other taxes. See "The Merger -- General Description of Merger."

     Wismer-Martin shareholders will not be entitled to receive any dividends or
other  distributions  on  the  PCN  Common  Stock  until  the  Merger  has  been
consummated and they have exchanged  their  Certificates  for PCN  Certificates.
Subject to applicable law, such dividends and distributions  which have a record
date after the Effective  Time, if any, will be  accumulated  and, at the time a
Wismer-Martin  shareholder  surrenders his or her  Certificates  to the Exchange
Agent,  all accrued and unpaid  dividends and  distributions,  together with any
cash  payments in lieu of fractional  shares of PCN Common  Stock,  will be paid
without interest.  PCN does not anticipate declaring any dividends or making any
other distributions prior to the Effective Time.

                                       29
<PAGE>

     The Cash  Consideration  and Stock  Consideration  issuable in exchange for
outstanding  shares of Wismer-Martin  Common Stock,  together with dividends and
cash in lieu of fractional shares, which remain undistributed for 180 days after
the  Effective  Time,  shall be  delivered by the  Exchange  Agent to PCN,  upon
demand,  and any  holders of the  Certificates  who have not  surrendered  their
Certificates shall thereafter look only to PCN for delivery of PCN Certificates,
Cash  Consideration  and any cash in lieu of fractional shares and any dividends
or distributions with respect to PCN Common Stock.

No Fractional Shares

     No certificates or scrip representing fractional shares of PCN Common Stock
shall be issued  upon the  surrender  for  exchange  of  Certificates,  and such
fractional  share interests will not entitle the owner thereof to vote or to any
rights of a shareholder  of PCN. Each holder of shares of  Wismer-Martin  Common
Stock exchanged pursuant to the Merger who would otherwise have been entitled to
receive a fraction of a share of PCN Common Stock (after taking into account all
Certificates  delivered by such holder) shall  receive,  in lieu  thereof,  cash
(without  interest) in an amount equal to such fractional part of a share of PCN
Common Stock  multiplied by the average closing price of PCN Common Stock on the
NASDAQ Stock Market  during the fifteen  trading days  immediately  prior to the
Effective Time.

Interests of Certain Persons in the Merger

     In considering the  recommendation of the Wismer-Martin  Board with respect
to the Plan of Merger, Wismer-Martin's shareholders should be aware that certain
members of  Wismer-Martin's  senior management and the Wismer-Martin  Board have
certain interests in the Merger, as described below, that are in addition to the
interests of shareholders of Wismer-Martin  generally.  The Wismer-Martin  Board
was aware of these  interests  and  considered  them,  among other  matters,  in
approving the Plan of Merger and the transactions contemplated thereby.

     Consultation Agreement.  PCN has entered into a consultation agreement with
Ronald Holden,  the current Chairman of the Board and Chief Executive Officer of
Wismer-Martin,  which becomes  effective at the Effective Time. The consultation
agreement provides that Mr. Holden shall act as a consultant to PCN for a period
of two years  following  the Effective  Time (the  "Term").  During the Term, he
shall  receive  an  annual  consultation  fee  of  $120,000.  In  addition,  the
consultation  agreement generally provides that during the Term and the one year
period  thereafter,  Mr.  Holden shall not directly or indirectly  own,  manage,
operate,  control,  invest or have an interest in, be employed by or participate
in, any business which is competitive with any business  conducted by PCN or any
of its affiliates during the Term.

     Option and Voting Agreements. The Majority Shareholders have each agreed in
separate  Option and Voting  Agreements  with PCN to, among other  things,  vote
their  shares of  Wismer-Martin  Common  Stock  entitled  to vote at the Special
Meeting in favor of  approval  of the Plan of Merger.  Further,  each Option and
Voting Agreement  provides that, under certain  circumstances,  PCN may purchase
the Majority  Shareholder's  shares of Wismer-Martin Common Stock. See "Security
Ownership of Certain Persons and Option and Voting Agreements."

Certain Federal Income Tax Consequences of the Merger

     Unless PCN exercises the Cash Option,  the Merger is intended to qualify as
a  reorganization  for federal  income tax purposes  under Section 368(a) of the
Internal  Revenue  Code  of  1986,  as  amended  (the  "Code").  As  such,  as a
consequence of the Merger (subject to the qualifications discussed below, and so
long as the Cash Option is not exercised):

     (a)  none of PCN,  Wismer-Martin  or Merger Sub will  recognize any gain or
          loss as a result of the Merger;

     (b)  except for any Cash  Consideration  received and cash received in lieu
          of fractional  share  interests,  a holder of shares of  Wismer-Martin
          Common Stock who exchanges  such shares for shares of PCN Common Stock
          will not recognize any gain or loss upon such exchange;

     (c)  a holder who receives Cash  Consideration in the Merger will recognize
          gain  equal to the lesser of (x) the excess (if any) of (1) the Market
          Price of the PCN Common  Stock  plus the amount of Cash  Consideration
          received  by such  holder in the Merger,  over (2) such  holder's  tax
          basis  in  the  shares  of the  Wismer-Martin  Common  Stock  tendered
          therefor,  and (y) the amount of Cash  Consideration  received  by the
          holder  in the  Merger.  Such  gain  will be  long-term  capital  gain
          provided that the holder has held the Wismer-Martin  


                                       30
<PAGE>

          Common Stock as a capital asset as of the Effective  Time and for more
          than one year.  No loss shall be  recognized by any holder as a result
          of such receipt of Cash Consideration in the Merger.

     (d)  the  aggregate  adjusted  tax basis of the shares of PCN Common  Stock
          received  in such  exchange  will be  equal  to a  holder's  aggregate
          adjusted  tax  basis  in the  shares  of  Wismer-Martin  Common  Stock
          surrendered therefor (i) decreased by the amount of Cash Consideration
          received by such holder in the Merger and (ii) increased by the amount
          of gain recognized by such holder in the Merger;

     (e)  if the  shares of  Wismer-Martin  Common  Stock were held as a capital
          asset at the Effective  Time,  the holding period of the shares of PCN
          Common Stock received in the Merger will include the holding period of
          the shares of Wismer-Martin Common Stock exchanged therefor; and

     (f)  a holder of shares of Wismer-Martin  Common Stock who receives cash in
          the Merger in lieu of a fractional  share interest of PCN Common Stock
          will be treated as if such  fractional  share  interest  of PCN Common
          Stock was  distributed  to such  holder and then  redeemed  by PCN for
          cash. The deemed  redemption will be treated as a distribution in full
          payment in  exchange  for the  fractional  share  interest  of the PCN
          Common Stock deemed received by the holder under Section 302(a) of the
          Code. Accordingly,  such holder will recognize a gain or loss equal to
          the difference  between the amount of cash received and the portion of
          such holder's adjusted tax basis in the shares of Wismer-Martin Common
          Stock allocable to the fractional  share interest of PCN Common Stock.
          The gain or loss will be long-term  capital gain or loss provided that
          the shares of Wismer-Martin  Common Stock deemed  surrendered for such
          fractional  share  interest of PCN Common Stock were held as a capital
          asset at the Effective Time and for more than one year.

     Paine, Hamblen,  Coffin, Brooke & Miller LLP ("Paine Hamblen"),  counsel to
Wismer-Martin, has rendered an opinion to Wismer-Martin dated August 7, 1996, to
the effect that: (i) if the Cash Option is not exercised;  (ii) if the number of
shares of Wismer-Martin Common Stock for which dissenters' rights are exercised,
in the aggregate,  do not exceed 2.5% of the  outstanding  Wismer-Martin  Common
Stock and if the amount received by Wismer-Martin  shareholders exercising their
dissenters' rights does not exceed the aggregate Merger  Consideration that such
shareholders  would have been entitled to receive had they not  exercised  their
dissenters'  rights;  and (iii) if the Merger is carried out in accordance  with
the other  representations,  assumptions  and  qualifications  contained in such
opinion,  the Merger will  constitute a  reorganization  for federal  income tax
purposes as defined by Section 368(a) of the Code, that  Wismer-Martin,  PCN and
Merger  Sub will each be a party to the  reorganization  as  defined  by Section
368(b) of the Code and the federal income tax consequences  listed in paragraphs
(a) through (f) above will result from the Merger. Such opinion does not address
any federal income tax consequences applicable to Wismer-Martin shareholders who
exercise   dissenters'   rights.   Such   opinion  is  based  on  current   law,
representations by PCN, Merger Sub,  Wismer-Martin and Ronald Holden and various
other  qualifications  and  assumptions as set forth in the copy of such opinion
filed as an exhibit to the Registration  Statement of which this Proxy Statement
and Prospectus  forms a part.  Without  limiting the generality of the foregoing
limits on such  opinion,  Paine  Hamblen  expresses no opinion as to the federal
income  tax  consequences  of the  Merger in  circumstances  other than the ones
referred  to in clauses  (i)  through  (iii)  above.  It is a  condition  to the
consummation  of the Merger that Paine Hamblen shall have rendered an opinion to
Wismer-Martin dated as of the Effective Time to the same effect.

     None of  Wismer-Martin,  Merger Sub or PCN have requested a ruling from the
Internal  Revenue Service in connection with the Merger.  The opinion of counsel
referred to in the  preceding  paragraph  is neither  binding  upon the Internal
Revenue Service nor would it preclude the Internal Revenue Service from adoption
of a contrary position.  There is no assurance that the Internal Revenue Service
will not successfully  contest some or all of the conclusions  contained in such
opinion of counsel.

     In order to qualify as a  reorganization  under  368(a) of the Code,  among
other requirements,  at least 80% of the outstanding Wismer-Martin Common Stock,
in the aggregate,  must be exchanged for PCN Common Stock in the Merger.  Unless
the Cash Option is exercised,  except under the  circumstances  described in the
next sentence,  at least 80% of the Merger Consideration would always consist of
PCN Common Stock.  However,  the  satisfaction of this 80% requirement  could be
affected by the number of holders of  Wismer-Martin  Common  Stock who  exercise
their dissenters'  rights.  Accordingly,  in the event that holders of more than
approximately  2.5% of the Wismer-Martin  Common Stock exercise their dissenters
rights (See "-- Dissenters'  Rights") and/or, in certain  circumstances,  if the
amount received by shareholders  exercising their dissenters' rights exceeds the
value of the Merger  Consideration  (in any such case,  the  "Dissenter  Trigger
Events"),  it is possible that less than 80% of the total  consideration paid by
PCN in connection  with the Merger would be in the form of PCN Common Stock.  In
order to address this  possibility,  the Merger  Agreement  contains a provision
(the "Tax Adjustment") which ensures that 80% of the total Merger  


                                       31
<PAGE>

Consideration  will be in the  form of PCN  Common  Stock  even if a  number  of
shareholders (not exceeding  holders of 20% of the  Wismer-Martin  Common Stock)
exercise their dissenters' rights.  However,  since, among other things, neither
PCN nor  Wismer-Martin  controls  the  amount  determined  by a court  to be the
appraised   value  of  the   Wismer-Martin   Common  Stock  held  by  dissenting
shareholders,  no  assurances  can be give that,  if a Dissenters  Trigger Event
occurs, the Tax Adjustment will, under all possible  circumstances,  ensure that
the Merger qualifies as a reorganization under Section 368(a) of the Code.

     As a result,  if PCN  exercises  the Cash Option or if a Dissenter  Trigger
Event  occurs and  results in the Merger not  qualifying  as an  reorganization,
then, as a result of the Merger, the Wismer-Martin  shareholders will be treated
as having  sold  their  Wismer-Martin  Common  Stock to PCN.  Accordingly,  each
Wismer-Martin  shareholder  will  recognize gain or loss equal to the difference
between the amount of cash and/or fair market value of the PCN Common Stock,  as
the  case  may  be,  received  by  such   shareholder  in  the  Merger  and  the
shareholder's  tax basis in the Wismer-Martin  Common Stock exchanged  therefor.
Such gain or loss will be long-term  capital gain or loss  provided  that, as of
the Effective Time, the shareholder had held the Wismer-Martin Common Stock as a
capital asset and for more than one year.

     THE DISCUSSION OF CERTAIN FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER SET
FORTH ABOVE IS INCLUDED FOR GENERAL  INFORMATION  ONLY AND IS BASED UPON CURRENT
LAW.  THE  FOREGOING   DISCUSSION  DOES  NOT  ADDRESS  ANY  FEDERAL  INCOME  TAX
CONSEQUENCES  APPLICABLE TO WISMER-MARTIN  SHAREHOLDERS WHO EXERCISE DISSENTERS'
RIGHTS.  IN ADDITION,  THE FEDERAL INCOME TAX  CONSEQUENCES OF THE MERGER MAY BE
DIFFERENT FOR PARTICULAR TYPES OF WISMER-MARTIN SHAREHOLDERS OR IN LIGHT OF EACH
WISMER-MARTIN   SHAREHOLDER'S   PERSONAL   CIRCUMSTANCES.   FOR   THAT   REASON,
WISMER-MARTIN   SHAREHOLDERS  ARE  URGED  TO  CONSULT  THEIR  OWN  TAX  ADVISORS
CONCERNING THE FEDERAL INCOME TAX  CONSEQUENCES  THAT MAY BE RELEVANT TO THEM IN
CONNECTION  WITH THE MERGER,  AS WELL AS THE  APPLICATION  TO THEM OF ANY STATE,
LOCAL,  FOREIGN,  OR OTHER TAX LAWS.  THE  FOREGOING  DISCUSSION IS NOT INTENDED
NECESSARILY  TO  APPLY  TO   WISMER-MARTIN   SHAREHOLDERS  WHO  HOLD  SHARES  OF
WISMER-MARTIN  COMMON  STOCK BY VIRTUE OF BEING  CURRENT OR FORMER  EMPLOYEES OF
WISMER-MARTIN AND/OR HOLDERS OF WISMER-MARTIN OPTIONS, TO DEALERS IN SECURITIES,
OR TO OTHER CATEGORIES OF SHAREHOLDERS WHO MAY BE SUBJECT TO SPECIAL RULES.

Federal Securities Law Matters

     The issuance of the PCN Common Stock  pursuant to the Merger  Agreement has
been registered under the Securities Act. The PCN Common Stock will be available
for resale  without  restriction  (i)  immediately  and without any  limitation,
except  for shares  issued to any person who may be deemed to be an  "Affiliate"
(as such term is defined for purposes of Rule 145 under the  Securities  Act) of
Wismer-Martin  at the time of the  Special  Meeting  and (ii) by  Affiliates  of
Wismer-Martin  who comply with the  requirements  of Rule 145(d)(1) in effecting
such resales.  Persons who may be deemed  Affiliates of Wismer-Martin  generally
include  individuals  or entities that control,  are controlled by, or are under
common  control  with,  Wismer-Martin,  and may  include  certain  officers  and
directors, as well as principal shareholders, of Wismer-Martin.

     If the Merger is consummated, the Wismer-Martin Common Stock will no longer
be quoted on the SQSI and will be deregistered  under the Exchange Act. PCN will
be subject to certain reporting  obligations under the Exchange Act with respect
to the PCN Common Stock.

Accounting Treatment

     PCN intends to treat the Merger as a "purchase," as such term is used under
generally accepted accounting principles, for accounting and financial reporting
purposes.  Under the purchase  method of accounting,  assets and  liabilities of
Wismer-Martin  would be recorded at their fair value at the Effective Time, with
the  excess  consideration  to be  paid  by  PCN  pursuant  to the  Merger  over
Wismer-Martin's net tangible and identifiable assets being recorded as goodwill.

                                       32
<PAGE>

Listing on NASDAQ Stock Market

     PCN has agreed to use its  reasonable  best  efforts to cause the shares of
PCN Common Stock to be issued  pursuant to the Merger  Agreement to be listed on
the NASDAQ Stock Market.

     See "The Merger Agreement -- Conditions to the Merger."

Dissenters' Rights

     THE FOLLOWING SUMMARY OF THE AVAILABILITY OF DISSENTERS' RIGHTS FOR HOLDERS
OF  WISMER-MARTIN  COMMON STOCK DOES NOT PURPORT TO BE COMPLETE AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO CHAPTER 23B.13 OF THE WBCA, WHICH IS ATTACHED TO
THIS PROXY  STATEMENT AND  PROSPECTUS AS ANNEX B AND IS  INCORPORATED  HEREIN BY
REFERENCE.

     ANY SHAREHOLDER  CONTEMPLATING THE EXERCISE OF DISSENTERS'  RIGHTS IS URGED
TO REVIEW  THE FULL  TEXT OF  CHAPTER  23B.13 OF THE WBCA  WHICH IS SET FORTH IN
ANNEX B HERETO.  FAILURE TO FOLLOW ANY OF THE STATUTORY PROCEDURES PRECISELY MAY
RESULT  IN A  TERMINATION  OR  WAIVER  OF  DISSENTERS'  RIGHTS.  IN  VIEW OF THE
COMPLEXITY OF THESE PROVISIONS OF WASHINGTON LAW, ANY WISMER-MARTIN  SHAREHOLDER
WHO IS CONSIDERING DISSENTING FROM THE MERGER SHOULD CONSULT A LEGAL ADVISOR.

     A holder of  Wismer-Martin  Common Stock who properly follows the procedure
for  dissenting  and  demanding  payment for such  holder's  shares  pursuant to
Chapter  23B.13 (as  summarized  below) may be  entitled  to receive in cash the
"fair value" of such holder's shares in lieu of the  consideration  provided for
in the Merger  Agreement.  The "fair value" of a dissenter's  shares will be the
value of such  shares  immediately  prior to the  Effective  Time of the Merger,
excluding any  appreciation or depreciation in anticipation of the Merger unless
exclusion would be inequitable.  The "fair value" could be more than,  equal to,
or less  than the  value of the  consideration  the  shareholder  would  receive
pursuant to the Merger  Agreement if the  shareholder  did not  dissent.  In the
event the  dissenting  shareholder  and  Wismer-Martin  cannot  agree on a "fair
value" of the dissenter's shares, "fair value" may ultimately be determined by a
court in an appraisal proceeding.

     To properly exercise  dissenters'  rights with respect to the Merger and be
entitled to  compensation,  a holder of  Wismer-Martin  Common Stock must, among
other things,  (i) prior to the Wismer-Martin  Special Meeting,  deliver written
notice of such holder's intent to demand payment for such holder's shares if the
Merger is effected,  (ii) not vote such  holder's  shares in favor of the Merger
and (iii)  timely  deliver a demand for  payment,  certify  whether  such holder
acquired  beneficial  ownership  before the date of first  announcement  to news
media or to shareholders  of the terms of the Merger,  and deposit such holder's
stock certificates. Thus, any holder of Wismer-Martin Common Stock who wishes to
dissent  and who returns a proxy on one of the  accompanying  forms must mark it
with voting  instructions  (a) that such holder's shares are to be voted against
the Merger or (b) that such  holder's  shares are to abstain  from voting on the
Merger.  If the shareholder  returns a proxy (x) marked with  instructions  that
such  holder's  shares  are to be voted in favor of the  Merger  or (y)  without
marking voting instructions,  such holder's shares will be voted in favor of the
Merger and such holder will lose any dissenters' rights.

     Within ten days after the Effective Time of the Merger,  Wismer-Martin will
send a  written  dissenters'  notice  to  each  shareholder  who  satisfied  the
requirements of (i) and (ii) above,  indicating where the payment demand must be
sent and where and when stock  certificates must be deposited.  Such notice will
include,  among other things, a form of payment demand, and will set the date by
which Wismer-Martin must receive the payment demand,  which date may not be less
than 30 nor more than 60 days after the dissenters' notice is delivered.

     Shareholders  who fail to timely deliver  written notice of their intent to
demand  payment  or who vote in  favor of the  Merger  will not be  entitled  to
receive  this  notice  and will be bound by the terms of the  Merger  Agreement.
Written notice of intent to demand payment (and other  communications  regarding
dissenters' rights) should be addressed to Secretary, Wismer-Martin, Inc., 12828
N. Newport Highway,  Mead,  Washington  99201.  Such written notice of intent to
demand payment must be received by Wismer-Martin prior to the Special Meeting.

     A beneficial shareholder may assert dissenters' rights as to shares held on
the  beneficial  shareholder's  behalf  only if (a) the  beneficial  shareholder
submits to Wismer-Martin the record shareholder's written consent to the dissent
not later than the time the beneficial  shareholder  asserts  dissenters' rights
and (b) the beneficial  shareholder  


                                       33
<PAGE>

does so with respect to all shares of which such  shareholder  is the beneficial
shareholder or over which such shareholder has power to direct the vote.

     Within 30 days after the later of the  Effective  Time of the Merger or the
date the payment demand is received,  Wismer-Martin  will pay each dissenter who
complied with the conditions above, the amount that  Wismer-Martin  estimates to
be the fair value of such holder's shares,  plus accrued  interest.  The payment
must be accompanied by, among other things, (a) Wismer-Martin's balance sheet as
of the end of a fiscal  year  ending not more than 16 months  before the date of
payment,  an  income  statement  for  that  year,  a  statement  of  changes  in
shareholders'  equity for that year, and the latest available  interim financial
statements,  if any, and (b) an explanation of how  Wismer-Martin  estimated the
fair value of the shares and how the  interest was  calculated.  Notwithstanding
the  foregoing,  with  respect  to shares  acquired  after the date of the first
announcement  to news media or to  shareholders of the terms of the Merger (June
20,  1996),  Wismer-Martin  may elect to  withhold  payment of the fair value of
dissenters' shares plus accrued interest and, in such event, after the Effective
Time,  Wismer-Martin  will  estimate the fair value of the shares,  plus accrued
interest,  and will  offer to pay this  amount to each  dissenter  who agrees to
accept it in full satisfaction of the dissenter's demand.

     A dissenter may (i) notify  Wismer-Martin in writing of the dissenter's own
estimate of the fair value of the dissenter's shares and amount of interest due,
and (ii)(a) demand payment of the dissenter's  estimate,  less any payment made,
or (b) with respect to after-acquired  shares for which Wismer-Martin elected to
withhold payment, reject Wismer-Martin's offer of its estimate of the fair value
of such shares and amount of interest due and demand payment of the  dissenter's
estimate of the fair value of the dissenter's shares and amount of interest due,
if:

          (x) The  dissenter  believes  that the amount  paid or offered is less
     than the fair value of the  dissenter's  shares or that the interest due is
     incorrectly calculated;

          (y) Wismer-Martin  fails to make payment within 60 days after the date
     set for demanding payment; or

          (z)  Wismer-Martin  does not effect the Merger and does not return the
     deposited stock certificates or release the transfer  restrictions  imposed
     on  uncertificated  shares  within 60 days after the date set for demanding
     payment.

     A dissenter  will be deemed to have  waived the right to demand  payment of
the dissenter's  estimate unless the dissenter  notifies  Wismer-Martin  of such
payment  demand in writing  within 30 days after  Wismer-Martin  makes or offers
payment for the dissenter's shares.

     If a demand for  payment of the  dissenter's  estimate  remains  unsettled,
Wismer-Martin  will  commence  a  proceeding  in the  Superior  Court of Spokane
County,  Washington  within 60 days  after  receiving  such  payment  demand and
petition  the  court to  determine  the fair  value of the  shares  and  accrued
interest  and, if  Wismer-Martin  does not commence such  proceeding  within the
60-day period,  it shall pay each dissenter  whose demand remains  unsettled the
amount  demanded.  Wismer-Martin  will make all dissenters  whose demands remain
unsettled, whether or not residents of Washington,  parties to the proceeding as
in an action  against their shares and all parties must be served with a copy of
the  petition.  Wismer-Martin  may  join  as  a  party  to  the  proceeding  any
shareholder  who claims to be a  dissenter  but who has not,  in the  opinion of
Wismer-Martin,  complied  with the  provisions of Chapter  23B.13.  If the court
determines that such shareholder has not complied with the provisions of Chapter
23B.13,  the  shareholder  shall be dismissed as a party.  Each dissenter made a
party to the proceeding will be entitled to judgment (a) for the amount, if any,
by which the court finds the fair value of the shares,  plus  interest,  exceeds
the  amount  paid by  Wismer-Martin,  or (b) for the fair  value,  plus  accrued
interest,  of the  dissenter's  after-acquired  shares  for which  Wismer-Martin
elected to withhold payment.

     If  Wismer-Martin  does not effect the Merger within 60 days after the date
set for demanding payment and depositing stock certificates, Wismer-Martin shall
return the deposited stock  certificates  and release any transfer  restrictions
imposed on uncertificated shares.

     The right of a dissenting  shareholder  to obtain payment of the fair value
of such  shareholder's  shares will  terminate upon the occurrence of any of the
following events:

          (a) The merger is abandoned or rescinded;

          (b) A court permanently enjoins or sets aside the Merger; or

          (c) The shareholder's demand for payment is withdrawn with the written
     consent of Wismer-Martin.

                                       34
<PAGE>

     The Merger Agreement  contains certain  provisions which may be affected by
the number of Wismer-Martin  shareholders  exercising dissenters' rights. First,
one of the conditions to the obligations of PCN to effect the Merger is that the
holders of not more than 5% of  Wismer-Martin  Common Stock shall have  demanded
their dissenters' rights under the WBCA. See "The Merger Agreement -- Conditions
to the  Merger." If the holders of more than 5% of  Wismer-Martin  Common  Stock
exercise their dissenters' rights, this condition will not be satisfied.

     Second, in the event that a large number of holders of Wismer-Martin Common
Stock exercise their dissenters'  rights, it could prevent the Merger from being
treated  as a  reorganization  under  Section  368(a) of the Code for income tax
purposes.  Accordingly,  the Merger Agreement  contains an additional  provision
intended to preserve  the  tax-free  reorganization  treatment of the Merger (so
long as the Cash  Option is not  exercised),  such that the receipt of the Stock
Consideration  by Wismer-Martin  shareholders  would be on a tax-free basis, by,
based upon  certain  assumptions,  limiting the  aggregate  amount of cash to be
received by both the dissenting and non-dissenting shareholders of Wismer-Martin
to 20% or less of the aggregate value of the consideration (both cash and shares
of  PCN  Common  Stock)  to  be  received  by  both  the   dissenting   and  the
non-dissenting  shareholders of  Wismer-Martin.  No assurances can be given that
such adjustment will enable the Merger to qualify as a tax-free  reorganization.
See "The Merger  Agreement";  "-- Certain Federal Income Tax Consequences of the
Merger."

     Pursuant to the Merger Agreement,  PCN shall have the opportunity to direct
all negotiations and proceedings with respect to dissenting shareholders.


                                       35
<PAGE>

                              THE MERGER AGREEMENT

     The  following  is a brief  summary  of  certain  provisions  of the Merger
Agreement.  This summary does not purport to be complete and is qualified in its
entirety by reference to the Merger  Agreement,  which is attached to this Proxy
Statement and Prospectus as Annex A and is incorporated herein by reference.

The Merger

     Pursuant  to the  Merger  Agreement,  Merger  Sub will  merge with and into
Wismer-Martin,   the  separate   existence   of  Merger  Sub  will  cease,   and
Wismer-Martin  will be the  surviving  corporation  and  become  a  wholly-owned
subsidiary  of PCN (the  "Merger").  At the  effective  time of the Merger  (the
"Effective  Time"),  each  share  of  Wismer-Martin   Common  Stock  issued  and
outstanding   immediately   prior  to  Effective  Time,  except  those  held  by
shareholders  who validly  perfect  dissenters'  rights under the WBCA,  will be
converted into the right to receive (the "Merger Consideration"):  (i) an amount
in cash (the "Cash  Consideration")  equal to the quotient  obtained by dividing
(x)  $1,980,000  by (y) the  number  of  shares of  Wismer-Martin  Common  Stock
outstanding  immediately prior to the Effective Time (the "Common Share Number")
and (ii) subject to the  adjustments  described  below,  that number (the "Stock
Consideration")  of shares of PCN's Common Stock, par value $.01 per share ("PCN
Common  Stock"),  equal to the quotient  obtained by dividing (x) 935,000 by (y)
the Common Share Number.  Assuming that there are no  adjustments  to the Merger
Consideration,  as described below, and assuming the exercise in full of 300,000
currently outstanding options to purchase Wismer-Martin Common Stock, each share
of Wismer-Martin Common Stock will be convertible into $0.1191 in cash and .0562
shares of PCN Common Stock. No assurances can be made that there will not be any
changes in the foregoing  amount of cash or number of shares of PCN Common Stock
as a  result  of any  one  or  more  of  the  adjustments  described  below.  In
particular,  and in  addition  to the  adjustments  described  in the  following
paragraph,  in the event that the Market Price (as defined  below) of PCN Common
Stock on the  third  business  day prior to the  Effective  Time is less than or
equal  to  $9.00  per  share,  then,  at  PCN's  option,  in  lieu  of the  Cash
Consideration   and   Stock   Consideration   described   above,   the   "Merger
Consideration"  shall be an  amount in cash  equal to (the  "Cash  Option")  (x)
$14,000,000  divided  by (y) the  Common  Share  Number,  or $0.8421 in cash per
share,  assuming  the  exercise  of  300,000  currently  outstanding  options to
purchase  Wismer-Martin  Common  Stock and that the  Market  Price of PCN Common
Stock was $9.00 per share or less.

     The  Merger  Agreement  provides  that the Stock  Consideration  (described
above) will be adjusted under the following circumstances:  (i) if the aggregate
Market  Price of the Stock  Consideration  is less than  $9,350,000  ($10.00 per
share) on the third business day immediately  preceding the Effective Time, then
the Stock Consideration shall be increased to equal such number of shares of PCN
Common Stock as has an  aggregate  market  value of  $9,350,000  and (ii) if the
aggregate  Market Price of the Stock  Consideration  is greater than $11,453,750
($12.25 per share) on the third business day immediately preceding the Effective
Time,  then the Stock  Consideration  shall be decreased to equal such number of
shares of PCN Common Stock as has an aggregate market value of $11,453,750.  The
Merger  Agreement  contains an  additional  provision  intended to preserve  the
tax-free  reorganization  treatment of the Merger (so long as the Cash Option is
not  exercised),   such  that  the  receipt  of  the  Stock   Consideration   by
Wismer-Martin  shareholders would be on a tax-free basis, by, based upon certain
assumptions,  limiting the  aggregate  amount of cash to be received by both the
dissenting and  non-dissenting  shareholders of  Wismer-Martin to 20% or less of
the  aggregate  value of the  consideration  (both cash and shares of PCN Common
Stock) to be received by both the dissenting and the non-dissenting shareholders
of  Wismer-Martin.  This  provision  may result in  adjustments  decreasing  the
aggregate  amount of cash and increasing  the aggregate  number of shares of PCN
Common Stock to be received by the non-dissenting  shareholders of Wismer-Martin
in the Merger.  This adjustment would be expected to occur only if a significant
number  of  shareholders   exercise  dissenters'  rights.  See  "The  Merger  --
Dissenters' Rights." No assurances can be given that such adjustment will enable
the Merger to qualify as a tax-free  reorganization.  See "The Merger -- Certain
Federal Income Tax  Consequences of the Merger." As used herein,  "Market Price"
means  the  average  of the  closing  price  of a share of PCN  Common  Stock as
reported  on the NASDAQ  Stock  Market  during the  fifteen  (15)  trading  days
immediately preceding the date of determination.

     As soon as reasonably  practicable  after the Effective  Time, the Exchange
Agent will mail transmittal  instructions and a form of letter of transmittal to
each Wismer-Martin  shareholder to be used in forwarding his or her Certificates
for surrender and exchange for the Cash Consideration, including cash in lieu of
a fractional share of PCN Common Stock, and Stock  Consideration.  After receipt
of such  transmittal  instructions  and  form of  letter  of  transmittal,  each
Wismer-Martin  shareholder  should  surrender  his  or her  Certificates  to the
Exchange Agent in accordance  with the transmittal  instructions,  and each such
holder  will  receive in  exchange  therefor an amount in cash equal to the Cash
Consideration  and number of PCN Common  Stock  Certificates  equal to the Stock
Consideration  representing  whole 


                                       36
<PAGE>

shares  of PCN  Common  Stock,  and any cash  that may be  payable  in lieu of a
fractional  share of PCN Common  Stock.  See "The  Merger --  Exchange  of Stock
Certificates; -- No Fractional Shares."

Representations and Warranties

     The Merger  Agreement  contains various  representations  and warranties by
each of PCN and Wismer-Martin relating to, among other things, (i) each of their
organizations,   and  in  the   case   of   Wismer-Martin,   its   subsidiaries'
organizations,  and similar corporate matters,  (ii)  authorization,  execution,
delivery,  performance and  enforceability  of the Merger  Agreement and related
matters, (iii) the absence of conflicts under the PCN Certificate,  PCN By-Laws,
Wismer-Martin   Certificate  or  Wismer-Martin  By-Laws  or  violations  of  any
instruments or laws, and any required consents or approvals,  (iv) the documents
and  reports  filed  by each  of them  with  the  SEC  and the  accuracy  of the
information  contained  therein,  (v)  the  absence  of any  broker,  finder  or
investment  banker  fee being  payable  as a result of the  consummation  of the
Merger,  (vi) the  accuracy  of the  information  provided  by each of them with
respect to the  Registration  Statement and the Proxy  Statement and Prospectus,
(vii) the absence of certain  events,  changes or effects and (viii) the absence
of undisclosed material liabilities. PCN has made representations and warranties
relating to the operations of Merger Sub. Wismer-Martin has made representations
and  warranties  relating to (i) its capital  structure,  (ii) property owned or
leased, (iii) authority to use all patents and trademarks,  (iv) litigation, (v)
compliance with environmental  laws, (vi) effectiveness and validity of permits,
licenses and related  authorization  necessary to conduct its operations and the
operations of its subsidiaries,  (vii) taxes, (viii) certain accounting matters,
(ix)  retirement and other  employee plans and matters  relating to the Employee
Retirement Income Security Act of 1974, as amended, (x) employee  representation
by labor unions or employee  involvement in any other  organizational  activity,
(xi) a list of certain contracts relating to certain employment,  consulting and
benefit   matters,   (xii)   maintenance   of  insurance,   (xiii)  listing  and
collectibility  of  accounts   receivable,   (xiv)   effectiveness  of  material
contracts,  (xv) no material related party transactions other than as previously
disclosed,  (xvi) the  shareholder  vote required to approve the Plan of Merger,
(xvii) a list of  customers  and  suppliers  and no material  disputes  with any
client of  Wismer-Martin,  (xviii) a list of bank accounts and (xix) no unlawful
payment problems.

Certain Covenants

     Pursuant  to the Merger  Agreement,  during the period from the date of the
Merger  Agreement  until the Effective  Time,  Wismer-Martin  has agreed,  as to
itself and its  subsidiaries  (except as permitted by the Merger Agreement or as
consented  to in writing by PCN),  to,  among  other  things,  (i)  conduct  the
businesses of Wismer-Martin and its subsidiaries only in the ordinary course and
in a manner  consistent  with  past  practice,  (ii) use  commercial  reasonable
efforts to preserve the business organization,  services of officers,  employees
and consultants and relationships with customers,  (iii) not amend or propose to
amend its certificate of  incorporation or by-laws,  (iv) not issue,  deliver or
sell  capital  stock,  rights,  warrants,  options  for  convertible  or similar
securities,  subject to certain exceptions,  (v) not declare or pay any dividend
or make other distributions,  (vi) not reclassify,  combine, split or subdivide,
any of its capital stock or redeem,  purchase or otherwise acquire,  directly or
indirectly, any of its capital stock, (vii) not effect any material acquisitions
of any business or assets other than in the ordinary course of business,  (viii)
not sell,  lease,  encumber or otherwise  dispose of any material portion of its
assets,  (ix) not incur  any  indebtedness  for  borrowed  money (or  guarantees
thereof),  (x) not increase the  compensation  payable to officers and employees
(subject to certain  exceptions)  or grant any severance pay to any such persons
or enter into or enter into any collective  bargaining agreement or establish or
amend any  employee  benefit or fringe  benefit  plans or  arrangements  for the
benefit of any director,  officer or employee, (xi) not adopt a plan of complete
or partial liquidation or dissolution,  (xii) not enter any settlement agreement
with respect to any to any pending litigation,  grievances and the like, subject
to certain  exceptions,  (xiii) not terminate or amend any material contract and
(xiv) file all tax  returns  required  to be filed by them and pay all taxes due
prior to the Effective Time.

Certain Additional Agreements

     Pursuant to the Merger Agreement,  PCN and  Wismer-Martin  have agreed that
(i) they will each  afford to the  other  access to their  respective  officers,
properties,  offices,  plants and  information as the other party may reasonably
request,  (ii) they will  abide by the  terms of the  Confidentiality  Agreement
between  PCN  and   Wismer-Martin,   (iii)  they  will  comply  with  all  legal
requirements  imposed  on each other  with  respect  to the  Merger and  furnish
information to the other party in connection  with such legal  requirements  and
(iv) they will  advise each other of any  subsequent  event that would have been
required to be  disclosed  in the Merger  Agreement or any change or event which
has or could have a material adverse effect on PCN or Wismer-Martin, as the case
may be. The Merger Agreement provides that, PCN shall use all reasonable efforts
to permit it to issue the shares of PCN Common Stock to be issued in the Merger.
The Merger Agreement  


                                       37
<PAGE>

provides that, Wismer-Martin shall (i) promptly take all actions necessary under
its organizational  documents and the WBCA to convene the Special Meeting,  (ii)
use its reasonable  best efforts to cause all options to purchase  Wismer-Martin
Common Stock, whether or not vested, whose purchase price per share is less than
or equal to the Merger Consideration ("In-the-Money Options") to be exercised or
canceled  prior to the  Effective  Time,  (iii)  cause its  counsel  to issue to
Wismer-Martin a tax opinion to the effect that,  among other things,  the Merger
will be treated for federal income tax purposes as a tax-free reorganization and
(iv) deliver to PCN a  description  of certain  property no later than the third
day prior to the Effective Time.

No Solicitation of Other Transactions

     The Merger Agreement  provides that Wismer-Martin and its subsidiaries will
not (i) initiate contact with,  solicit or otherwise  encourage any inquiries or
the making of any proposal or offer for a merger or other  business  combination
involving  Wismer-Martin  or any  proposal  or offer to acquire or dispose of or
exchange  an equity  interest  in,  or a  material  portion  of the  assets  of,
Wismer-Martin (an "Acquisition  Proposal") or (ii) negotiate or discuss with, or
provide any non-public  information  to, any person  relating to any Acquisition
Proposal. Wismer-Martin also has agreed not to authorize or permit its officers,
directors or employees, or any investment banker,  financial advisor,  attorney,
accountant  or  representative  retained by it, to engage in such  activities on
Wismer-Martin's  behalf.  Wismer-Martin  must  immediately  notify  PCN  of  any
negotiations, requests for non-public information or discussions with respect to
an Acquisition  Proposal,  and keep PCN fully informed of the status and details
of any such Acquisition Proposal or request.

Expenses

     Except as set forth below, the Merger Agreement  provides that,  whether or
not the Merger is  consummated,  all costs and expenses  incurred in  connection
with the Merger  Agreement and the  transactions  contemplated  thereby shall be
paid by the party incurring such expenses.

     The  Merger  Agreement  also  provides  that  if the  Merger  Agreement  is
terminated under certain circumstances,  the non-terminating party shall pay the
terminating party its damages, losses, costs and expenses,  (including,  without
limitation, reasonable fees and disbursements of attorneys, financial commitment
and financial  advisory  fees) incurred by the  terminating  party in connection
with the  transactions  contemplated by the Merger  Agreement and as a result of
such termination.

Conditions to the Merger

     The respective  obligations of PCN and  Wismer-Martin  to effect the Merger
are subject to a number of  conditions,  including  among  others (i) the Merger
Agreement  shall  have  been  approved  and  adopted  by the  requisite  vote of
shareholders of Wismer-Martin,  (ii) all  authorizations,  consents,  orders and
approvals  (including  "blue sky" approvals) or declarations or filings with, or
expirations of waiting periods imposed by, any governmental  entity, the failure
of which to obtain or file  would  have a Material  Adverse  Effect (as  defined
below), shall have been filed, occurred or been obtained, (iii) effectiveness of
the  Registration  Statement,  and  (iv) no  injunction  or other  order,  legal
restraint or prohibition  preventing the  consummation of the Merger shall be in
effect.  The  obligations  of PCN and  Merger  Sub to effect the Merger are also
subject  to the  conditions  that  (i) the  representations  and  warranties  of
Wismer-Martin  set  forth in the  Merger  Agreement  shall  have  been  true and
correct,  individually and in the aggregate, in all material respects as if made
on and as of the Closing, except that any such representation or warranties made
as of a  specified  date  shall  have  been  true on and as of such  date,  (ii)
Wismer-Martin shall have performed or complied in all material respects with all
of its agreements and covenants  contained in the Merger Agreement,  (iii) there
shall have been no change in the  business,  results of  operations,  properties
(including intangible properties), financial condition, assets or liabilities of
Wismer-Martin since the date of the Merger Agreement,  which, individually or in
the aggregate,  has a Material  Adverse Effect,  (iv)  Wismer-Martin  shall have
received  certain  consents  and  approvals   necessary  for   Wismer-Martin  to
consummate the Merger, including,  without limitation,  consents from certain of
Wismer-Martin's  lenders, (v) shareholders of no more than 5% of the outstanding
Wismer-Martin  Common Stock shall have demanded their  dissenter's  rights under
the WBCA, (vi) all  In-the-Money  Options shall have been exercised or canceled,
(vii) PCN shall have received an opinion of outside counsel to  Wismer-Martin in
form and substance  reasonably  satisfactory to PCN, (viii)  Wismer-Martin shall
have delivered a compliance  certificate to PCN on the Closing Date and (ix) all
corporate proceedings taken by Wismer-Martin in connection with the


                                       38
<PAGE>

transactions  contemplated  by the Merger  Agreement and all documents  incident
thereto shall be  reasonably  satisfactory  in all material  respects to PCN and
PCN's  counsel.  The  obligation of  Wismer-Martin  to effect the Merger is also
subject  to (i) the  representations  and  warranties  of PCN and Merger Sub set
forth in the Merger Agreement shall have been true and correct, individually and
in the aggregate,  in all material respects as if made on and as of the Closing,
except that any such  representation  or warranties  made as of a specified date
shall have been true on and as of such date,  (ii) PCN and Merger Sub shall have
performed or complied in all material  respects with all of its  agreements  and
covenants  contained  in the Merger  Agreement,  (iii)  there shall have been no
change in the business, results of operations,  properties (including intangible
properties), financial condition, assets or liabilities of PCN since the date of
the Merger Agreement,  which,  individually or in the aggregate,  has a Material
Adverse  Effect,  (iv)  Wismer-Martin  shall have received an opinion of outside
counsel to PCN in form and substance  reasonably  satisfactory to Wismer-Martin,
(v) PCN shall have delivered a compliance  certificate to  Wismer-Martin  on the
Closing Date and (vi) all corporate  proceedings taken by PCN in connection with
the transactions contemplated by the Merger Agreement and all documents incident
thereto  shall  be  reasonably   satisfactory   in  all  material   respects  to
Wismer-Martin  and  Wismer-Martin's  counsel.  For the  purposes  of the  Merger
Agreement,  the term  "Material  Adverse  Effect"  means with  respect to PCN or
Wismer-Martin,  as the  case  may  be,  any  effect  on the  business  of PCN or
Wismer-Martin,  as the case may be,  or any of its  subsidiaries  that is,  or a
reasonable  person would believe  would be  materially  adverse to the business,
results of operations,  properties (including intangible properties),  financial
condition,  assets or liabilities of PCN or  Wismer-Martin,  as the case may be,
and its subsidiaries, taken as a whole.

Wismer-Martin Stock Options

     Pursuant to the Merger Agreement, after the Effective Time, any outstanding
option to  purchase  Wismer-Martin  Common  Stock,  whether  vested or  unvested
("Stock  Option"),  shall be  automatically be deemed to constitute an option to
acquire,  on the same terms and conditions as were  applicable  under such Stock
Option,  the  number of shares of PCN  Common  Stock as such  Option  would have
entitled the holder  thereof to receive if such Stock Option had been  exercised
in full immediately  prior to the Effective Time;  provided,  however,  that the
number of shares of PCN Common  Stock that may be purchased  upon  exercise of a
Stock Option shall not include any  fractional  share and, upon exercise of such
Stock Option,  a cash payment shall be made for any fractional  share based upon
the closing  price of a share of PCN Common  Stock on the NASDAQ Stock Market on
the trading day immediately preceding the date of exercise.

Termination

     The Merger  Agreement  may be terminated at any time prior to the Effective
Time, whether before or after approval by the shareholders of Wismer-Martin, (i)
by mutual consent of the Boards of Directors of PCN and  Wismer-Martin,  (ii) by
either PCN or  Wismer-Martin,  if the Merger shall not have been  consummated by
October 15, 1996  (provided  that such right to terminate  the Merger  Agreement
will not be  available  to any party  whose  failure to fulfill  any  obligation
thereunder  has been the cause of or  resulted  in the  failure of the Merger to
occur on or before such date),  (iii) by either PCN or  Wismer-Martin,  if there
has been a material breach of any representation or warranty by the other party,
which breach has not been cured  within  fifteen (15)  business  days  following
receipt by the breaching  party of notice of such breach,  (iv) by either PCN or
Wismer-Martin,  if any  order,  decree or  ruling of a court or other  competent
authority  preventing the consummation of the Merger shall have become final and
nonappealable,  (v) by either PCN or Wismer-Martin,  if the required approval of
Wismer-Martin  shareholders  is not  obtained  upon a vote  held at the  Special
Meeting  and  (vi) by  PCN,  if any  Majority  Shareholder  breaches  any of the
material terms of an Option and Voting Agreement or is such Option and Voting is
not  enforceable  in all  material  respects  against the  Majority  Shareholder
executing such agreement.

     In the event of  termination  of the  Merger  Agreement  by  either  PCN or
Wismer-Martin  as described  above,  the Merger  Agreement shall become void and
there  will  be  no  liability  or   obligation  on  the  part  of  either  PCN,
Wismer-Martin,  Merger Sub or their respective officers or directors pursuant to
the Merger  Agreement,  except as set forth in certain  provisions of the Merger
Agreement,  including the payment of the expenses  described under "-- Expenses"
and  unless  such  termination  arises  from a  willful  breach  of  the  Merger
Agreement.

                                       39
<PAGE>

Amendment and Waiver

     The Merger  Agreement may be amended by action taken by or on behalf of the
respective  boards of directors of PCN and  Wismer-Martin;  provided that, after
approval  of the Merger  Agreement  by the  shareholders  of  Wismer-Martin,  no
amendment may be made that would require further  approval by such  shareholders
without such further approval. The Merger Agreement may not be amended except by
an instrument in writing signed on behalf of PCN, Merger Sub and Wismer-Martin.

     At any time prior to the Effective Time, either PCN and Wismer-Martin  may,
by action taken or authorized by their respective boards of directors (i) extend
the time for the  performance  of any of the  obligations to be performed by the
other party, (ii) waive any inaccuracies in the  representations  and warranties
by  the  other  party  contained  in the  Merger  Agreement  or in any  document
delivered  pursuant to the Merger Agreement,  or (iii) waive compliance with any
of the  agreements  of the other  party or  conditions  contained  in the Merger
Agreement.  Any such  extension  or waiver  will only be valid if set forth in a
writing signed by the party to be bound thereby.

                           INFORMATION CONCERNING PCN

     PCN is a leader in developing, marketing and supporting practice management
software  products for physician  practices.  PCN's  objective is to establish a
large installed base of physician practice customers who use PCN's most advanced
practice management software product, the PCN Health Network Information System,
thereby  becoming an important link for the  electronic  exchange of information
between physician  practices and other health care providers and  organizations.
In furtherance of this  objective,  since September 1993, PCN has acquired seven
practice  management  software  businesses,  increasing the number of physicians
associated  with sites which have purchased PCN's practice  management  software
products from approximately 2,000 to approximately 85,000, making PCN one of the
largest providers of practice management software products in the United States.
PCN  plans to  migrate  substantially  all of its  customers  to the PCN  Health
Network  Information  System during the next several years.  In order to rapidly
and  cost-effectively   supplement  its  practice  management  software  product
offerings with knowledge-based  clinical products and services, in January 1996,
PCN formed a joint venture with Glaxo Wellcome.  The joint venture  partnership,
HealthPoint,  will develop and market clinical  information  technology products
and services that will provide the clinical  information  needed at the point of
patient care to enable  physicians  and other health care  providers to practice
medicine  more  efficiently.  In March 1996,  HealthPoint  introduced  its first
product,  HealthPoint  ACS, a product  developed  for medical  offices to enable
physicians to, among other things,  manage the clinical information required for
treatment  at the  point  of  care.  HealthPoint  ACS  is  expected  to be  made
commercially available during the second half of 1996.

     PCN's practice  management  software  products,  which, among other things,
automate  physician  scheduling and generate patient billings,  insurance claims
billings and other financial reports, include interactive communication software
that links  physician  practices  with  hospitals,  Medicare/Medicaid  carriers,
commercial insurance carriers,  claims  clearinghouses,  clinical  laboratories,
pharmacies,  HMOs and  other  health  care  organizations  who have  established
electronic communication links under agreements with PCN. The PCN Health Network
Information System is designed to become the common practice management software
platform used by substantially all of PCN's physician practice customers and, as
an  integrated  unit  with  HealthPoint's   products,  is  expected  to  provide
physicians   with   comprehensive   financial,   administrative   and   clinical
applications.  The PCN Health Network  Information  System will primarily manage
the business  elements of the physician's  practice and  HealthPoint's  software
products  and  services  will  primarily   provide   physicians   with  clinical
applications  and  functionality  intended to assist  physicians in the clinical
aspects of their practices.

     Additional  information concerning PCN and its subsidiaries is contained in
PCN's  Annual  Report on Form 10-K for the year ended  December  31,  1995,  its
Quarterly  Report on Form 10-Q for the period ended March 31, 1996,  its Current
Reports on Form 8-K dated June 25, 1996 and July 10, 1996, its Current Report on
Form 8-K/A dated August 7, 1996 and its other  public  filings.  See  "Available
Information" and "Incorporation of Certain Documents by Reference."

Recent Developments

     On July 30, 1996,  PCN reported  its results for its second  quarter  ended
June 30, 1996. For that quarter,  revenues  increased  159% to $21,868,260  from
$8,454,243  for the same period in 1995.  Net income was $3,667,907 or $0.07 per
share for the second  quarter  compared to $1,287,332 or $0.03 per share for the
same  period in 1995.  


                                       40
<PAGE>

For the  first six  months  of 1996,  revenues  rose  188% to  $42,895,208  from
$14,912,105  for the  comparable  period in 1995.  Net  income for the first six
months of 1996 was $6,982,566 or $0.14 per share, versus $2,377,987 or $0.06 per
share for the comparable period in 1995.

                      INFORMATION CONCERNING WISMER-MARTIN

Description of Business

     Overview.  Wismer-Martin was formed to develop, market, install and support
microcomputer  practice management systems and related services designed for the
medical   and  dental   professions.   Wismer-Martin   was  founded  as  a  sole
proprietorship  in February of 1980 and was  incorporated  on November  29, 1982
under the laws of the State of Washington as Professional  Software  Associates,
Inc. The company changed its name to  Wismer-Martin,  Inc.  effective  August 1,
1985. In February 1994,  Wismer-Martin acquired Intergrated Health Systems, Inc.
("IHS"),  a company that develops and licenses  software  programs for hospitals
and related entities. Wismer-Martin's principal executive offices are located at
12828 N. Newport Highway, Mead, Washington 99021.

     Wismer-Martin derives revenue from systems sales and maintenance, forms and
other  services.  Systems sales include sales of physician  practice  management
systems,  health information  networks,  and hospital information systems to new
customers  and sales of system  upgrades  and  add-ons  to  existing  customers.
Systems  sales  to  new  customers   include   software   licensing,   hardware,
installation,   training,  and  support  contracts  for  software  and  hardware
maintenance. System upgrades include hardware, installation,  software licensing
and  training.   System  add-ons  include  additional  peripheral  hardware  and
installation and software licensing.

     Maintenance,  forms  and  other  services  revenues  include  software  and
hardware maintenance  contracts and sales of forms and supplies.  Other services
revenues include sales of  Wismer-Martin's  Electronic Data Interchange  ("EDI")
services which are processed through Equifax  Healthcare EDI Services,  Inc. and
installation,  training  and support not  otherwise  covered  under  maintenance
contracts.  Software  maintenance  represents  revenues derived from maintenance
agreements  providing  customers  with  updates and  enhancements  developed  by
Wismer-Martin and access to Wismer-Martin's toll-free telephone support service.
Hardware  maintenance  represents  revenues derived from maintenance  agreements
serviced by Digital Equipment Corp. for repairs and preventative  maintenance to
the  hardware.  Both  hardware  and  software  maintenance  are  optional to the
customer.  Wismer-Martin  provides software  maintenance to more than 90% of its
customers  and  hardware  maintenance  to more than 20% of its  customers  under
software and hardware  contracts.  In 1994,  system  upgrades,  add-on software,
software  and  hardware  maintenance,  forms and  supplies  and  other  services
accounted for approximately 40% of total net revenues.

Products and Services

Practice Management Systems

    SM*RT(R) Practice System

     Historically, Wismer-Martin's core product has been its practice management
software  product,  SM*RT Practice  System.  The SM*RT Practice  System includes
software  applications  which automate the financial,  administrative,  practice
management,  and clinical  information  requirements of medical group practices.
The System is modular to facilitate the addition of new applications.  The SM*RT
Practice   System  modules  are  designed  to  collect,   process,   report  and
electronically transmit data. To meet the needs of different size practices, the
SM*RT  Practice  System  operates on Novell  PC-based  Local Area Networks which
support the latest in Intel Dual Pentium  file servers  capable of serving up to
hundreds of physicians in a single group practice.

     Management  believes  the  SM*RT  Practice  System  meets  the  information
requirements  of the vast majority of all medical  specialties  and practices in
the United States.  The price of the SM*RT Practice System depends upon a number
of factors, including size of physician practice and number of system users, and
ranges  from  approximately  $12,000  to  $500,000.  The SM*RT  Practice  System
includes a software license, hardware,  installation and training, and a limited
warranty on hardware  through the  manufacturer's  warranty  and a one year free
on-site maintenance included in the price of the hardware.

     The SM*RT Practice software includes basic business applications modules as
standard  features,  as well as advanced  application  modules for an additional
fee. The modules include:

                                       41
<PAGE>

SM*RT Practice Modules                                      Capabilities
- ------------------------                                    --------------

Financial Applications

Insurance Billing .................      Processes and  prints  insurance  claim
                                           forms. Tracks aging of all claims and
                                           provides    re-bill    options    for
                                           delinquent    claims.     Coordinates
                                           billings for supplemental carriers.

Patient Billing ....................     Processes     and    prints     patient
                                           statements.   Supports   true   cycle
                                           billing, family,  individual patient,
                                           and open item statement billing.

Managed Care Tracking ..............     Tracks expected  reimbursement and risk
                                           pools;  provides the  information  to
                                           evaluate   profitability  of  managed
                                           care contracts.

Collections ........................     Allows   for   automated   collections,
                                           letters,  statement dunning messages,
                                           and full range of collection  reports
                                           and audits.

PlanForm ...........................     Enables custom designing of statements,
                                           labels and specialty forms.

Administrative Applications

Word Processing Integration ........     Provides  linkage to industry  standard
                                           word processors for cor-respondence.

Notes and Attributes ...............     Tracks and  reports  patient  notes and
                                           user defined data elements.

Patient Recall .....................     Tracks, reports and sends reminders for
                                           patient exams.

Practice Management Applications

Referral ...........................     Tracking SM*RT tracks referring doctors
                                           or  other   sources.   Complies  with
                                           regulatory   requirements  for  claim
                                           data. Tracks patient and dollar value
                                           of referred patient by source.

Filter - Report Generator ..........     Enables  the   practice  to   customize
                                           reports beyond the standard reports.

System Reporting ...................     System reporting includes:  accounting,
                                           transactional,    clinical,   recall,
                                           referral, trend analysis, management,
                                           and graphical.

Advanced  Features

Electronic Linkage .................     Integrated with Wismer-Martin SM*RT Net
                                           Healthcare  Information  Network, and
                                           also  provides  custom  interfaces as
                                           required.

AutoPost ...........................     Electronic  claim   remittance.   Takes
                                           carrier  data for paid claim and post
                                           to the  patient  account  in an  open
                                           item format automatically.

Appointment Scheduler ..............     Eliminates  the  appointment  book  and
                                           gives   immediate   access   to   the
                                           healthcare  providers daily,  weekly,
                                           and   monthly    schedules.    Tracks
                                           appointment     cancellations     and
                                           provides full reporting.

Dr. Dialer .........................     Anautomated     appointment    reminder
                                           system  which dials  patients at home
                                           using a  digitized  voice  system and
                                           patient input/response via touch-tone
                                           keys.

EZ-CAP .............................     Provides    complete    management   of
                                           capitated reimbursement contracts for
                                           practices.     Provides    projected,
                                           actual,   and  variance  reports  for
                                           management.   Transmits   claims   to
                                           carriers.   Integrated   with   SM*RT
                                           Practice.   Available  through  third
                                           party relationship.

Electronic Media Claims (EMC) ......     EMC  will  edit  the  claims  for  data
                                           elements  and  electronically  submit
                                           edited   claims  to  carriers  or  to
                                           electronic      clearing      houses.
                                           Wismer-Martin utilizes Equifax as the
                                           national   clearing   house  for  all
                                           client EMC.


                                       42
<PAGE>

New Practice Management Product Development

     During  the  second  half of 1996,  Wismer-Martin  expects to release a new
version of its practice  management  product  called SM*RT Practice for Windows.
This new version of the product  runs under the  Microsoft  Windows 95 operating
system and replaces the old MS-DOS character based product.

Health Information Network Systems

       SM*RT Net Suite

     In the past four years  Wismer-Martin  has developed and  implemented a new
product line now  marketed  under the name of SM*RT Net. The SM*RT Net suite was
designed to address the need for electronic  exchange of information  across the
network. Its objective is to streamline common, intra-organization communication
practices and processes.  Specifically,  the product suite enables organizations
such as, but not limited to, physician practices,  hospitals,  payors and allied
care  providers  to  electronically  exchange a common and  standardized  set of
information  transactions  related to the approval and delivery of patient care.
The breadth of  information  transactions  exchanged are dependent upon the type
and variety of organizations participating in the network.

     Wismer Martin's SM*RT Link product  provides a true  interactive  interface
for all networked participants,  including physicians,  hospitals, labs, imaging
centers,  managed care organizations,  employers,  third party payors, suppliers
and other entities. The distributed hub strategy facilitating this communication
capability  uses  a  distributed   processing   platform  to  permit  economical
incremental  growth without  degradation of  communication  performance.  Strict
adherence to HL7 (Health Level 7) protocols  ensures  compatibility,  as well as
efficient and swift integration with other healthcare  products  supporting this
clinical  communication  standard.  The  various  modules of the SM*RT Net Suite
include:

SM*RT Practice Modules                                      Capabilities
- ------------------------                                    --------------
SM*RT Net Hub ......................     SM*RT Net Hub  provides an  interactive
                                           electronic   interface   between  all
                                           participants    in    a    Healthcare
                                           Information Network (HIN),  including
                                           physicians, hospitals,  laboratories,
                                           imaging centers, IPA's, PPO's, HMO's,
                                           employers,    third   party   payors,
                                           suppliers    and   other    entities.
                                           Practices   can   transmit    patient
                                           referrals   and    demographics   and
                                           receive     admit/discharge     data,
                                           scheduling information,  lab and test
                                           results,    pre-authorizations    and
                                           claims status,  as examples.  The HUB
                                           computer       facilitating      this
                                           communication  capability  utilizes a
                                           distributed  processing  platform  to
                                           permit economical  incremental growth
                                           without degradation of communications
                                           performance.   The  HUB   supports  a
                                           variety  of  communication  links and
                                           protocols,  including TCP/IP,  LU6.2,
                                           and  SNA.  Strict  adherence  to  HL7
                                           protocols ensures  compatibility,  as
                                           well   as    efficient    and   swift
                                           integration's  with other  healthcare
                                           products   supporting  this  clinical
                                           communication.  The Net  Hub  modules
                                           currently  supports  a wide  range of
                                           financial,    clinical    and   other
                                           transaction types.

SM*RT Net Link .....................     The SM*RT Net Link  module is a Netware
                                           loadable    software   module   which
                                           manages the sending and  receiving of
                                           messages  between a HUB running SM*RT
                                           Net Hub  software  and a single SM*RT
                                           Link    workstation.    This   module
                                           includes a full GUI user interface.

                                         The SM*RT Net Link  module is a Netware
                                           loadable    software   module   which
                                           manages the sending and  receiving of
                                           messages  between a SM*RT Net Hub and
                                           either  a  single  workstation  or  a
                                           Novell  or  Windows  NT  file  server
                                           attached to a LAN.

SM*RT IS Link ......................     The SM*RT  Net  Lan  Link  module  is a
                                           Netware   loadable   software  module
                                           which   manages   the   sending   and
                                           receiving  of messages  between a HUB
                                           running  SM*RT Net Hub software and a
                                           minicomputer  or mainframe  running a
                                           third party application.

                                       43
<PAGE>

SM*RT Practice Modules                                      Capabilities
- ------------------------                                    ---------------
SM*RT Link IDK .....................     The SM*RTLink  IDK module is a set of C
                                           Language  routines which are provided
                                           to  third  party  vendors  for use in
                                           integrating  their  application  with
                                           the SM*RT Net Suite.

     SM*RT  Net  Hub's  development  is  driven  by the  strategy  for  creating
successful  fee-for-service and managed care  hospital-physician  network feeder
systems.  Capabilities include data distribution protocols, security and patient
referral  tracking  capability.  This  built-in  marketing  "intelligence"  will
provide the capability of tracking all referral transactions: i.e. understanding
who the true referral source of the patient is.

     SM*RT Net Hub is completely integrated with SM*RT Practice, permitting ease
of operation with consistent  menu driven screens and the automatic  updating of
practice  computer files.  Without this specific  programming  integration,  the
transfer of information  among  providers  merely  generates a print/text  file,
which normally must be re-keyed into the practice  computer  system files.  This
integration is obviously crucial in creating a seamless network.

     New SM*RT Net Suite Product Developments

     During  the  second  half of 1996,  Wismer-Martin  expects to release a new
version of its healthcare  information  network,  product called SM*RT Net. This
new version of the product runs under the  Microsoft  Windows 95, NT, and Novell
operating systems and replaces the old MS-DOS character based product.

Hospital Information Systems

     The ADDvantage  Hospital  Information  System  provides a fully  integrated
application  including  financial,  administrative,  clinical,  and managed care
modules to support the needs of the hospital  from 50-300  beds.  The system has
been  developed,  enhanced,  and expanded over the past 12 years and operates on
the IBM AS/400. The System is modular,  but is usually purchased in core groups.
The  ADDvantage  System  is  designed  to work  for a  single  hospital  or in a
multi-hospital setting where certain administrative  functions,  such as medical
records, are shared between institutions.

ADDvantage Systems Modules                                  Capabilities
- ---------------------------                                 -------------

Financial Applications

Patient Billing ....................     Insurance   billing  module   including
                                           payor   logs   and    managed    care
                                           processing.

Accounts Receivable ................     Statement  processing  and  Collections
                                           follow-up.   Payment  and  adjustment
                                           posting with full account inquiry.

Accounts Payable ...................     Controls vendor  invoices and payments.
                                           Includes  master  file   maintenance,
                                           transaction processing and reporting.

General Ledger .....................     Provides flexible financial  management
                                           including   user  defined   reporting
                                           based  on   current   year,   current
                                           budget, and historical data.

Patient Registration ...............     One  process   manages   all  types  of
                                           patient      registrations,      from
                                           pre-admission to discharge.

Materials Management ...............     Manages      purchasing,      receipts,
                                           requisitions,   transfers,   Cart/Par
                                           level,    lost    charges,    vendors
                                           statistics,  physical inventory,  and
                                           reporting.

DRG OptiMiser ......................     Operates in tandem with Medical  record
                                           Abstracting  Module to  optimize  DRG
                                           assignment for each patient encounter
                                           to ensure  data  quality  and optimum
                                           allowable reimbursement.

Cost Accounting ....................     Provides    complete    cost   tracking
                                           utilizing  step down  methodology  by
                                           use  of   RVU's  or   actual   costs.
                                           Provides cost accounting  information
                                           at    multiple    levels    of    the
                                           organization.

Fixed Assets .......................     Complete  property  management  modules
                                           with      automatic      depreciation
                                           calculation   via   ACRS  or   MACRS.
                                           Maintains three tax books;  internal,
                                           state and federal.

                                       44
<PAGE>

Clinical Applications

Clinical Information System ........      Provides  a  GUI  based  view  of  all
                                           clinical  data  in the  IHS  Clinical
                                           Modules  via  numeric  and  graphical
                                           representation.

Quality Utilization/Management .....     Complete      Quality       Utilization
                                           management,  physicians  maintenance,
                                           infection    control,     and    risk
                                           management capabilities.

Radiology Management ...............     Departmental      management     module
                                           including orders, scheduling,  result
                                           reporting,    film   tracking,    and
                                           management statistics.

Pharmacy Management ................     Departmental      management     module
                                           including     orders,      medication
                                           administration,   drug  interactions,
                                           and patient profile.

Laboratory Management ..............     Departmental      management     module
                                           including  orders,  result entry,  on
                                           time  instrument  interfaces  for all
                                           laboratory departments.

Clinical Documentation System ......     Multi-disciplinary     module     which
                                           supports  assessments,   care  plans,
                                           flowsheets,   and   progress   notes.
                                           Provides   standard  care  plans  and
                                           clinical pathways.

Administrative Applications

Resource Scheduling ................     Complete  multi-resource  scheduler for
                                           hospital and clinic departments.

Executive Information System .......     GUI based  executive  decision  support
                                           module  which  presents in  graphical
                                           form all relevant key  indicators for
                                           hospital  operations  with a focus on
                                           managed care indicators.

Order Communications ...............     Hospital wide order  entry  module with
                                           direct data entry or menu  selection.
                                           Includes   complete  order  explosion
                                           capability.

Medical Records ....................     Complete  departmental module including
                                           patient index, abstracting,  DRG/Case
                                           mix reporting,  chart deficiency, and
                                           chart locator.

     New ADDvantage System Product Developments

     In the past year Wismer-Martin has begun a major technology shift away from
terminal  based  applications  to client server  applications  utilizing the IBM
AS/400 as a database server with a PC LAN as a front end providing  clients with
a GUI interface.  The first two applications  marketed using this new technology
are the Clinical  Information  System and Radiology  Management System completed
during  this fiscal  year.  In the next fiscal year it is planned to extend this
technology to the Clinical Documentation System.

Customers

     Wismer-Martin  has installed more than 1600 physician  practice  management
systems,  currently  serving  over  3700  physicians  in more  than  30  medical
specialties  ranging  in  practice  size from one to more  than 100  physicians.
Wismer-Martin  markets  its  product  to  substantially  all  major  specialties
including  family  practice,  orthopedics,  obstetrics and gynecology,  internal
medicine and cardiology.  IHS has installed its hospital systems in 66 hospitals
ranging  in size  from 20 beds to 400  beds.  IHS's  hospital  system  has  been
utilized  in small rural  community  hospitals,  as well as large urban  medical
centers.  Wismer-Martin  has  installed  its HIN  products  in three  state wide
networks,  sponsored by Blue Cross of Washington, Blue Cross of Alaska, and Blue
Shield of Eastern  Washington,  which encompass  Washington and Alaska and which
have 370 client participants.  Wismer-Martin believes that an increasing portion
of its  sales are  likely to be made to  hospitals  and other  large  healthcare
providers   and  has   refocused  its  sales  efforts  to  address  this  market
opportunity.  70% of the installed client base is located in eight states.  Blue
Cross of  Washington  and  Alaska  accounted  for 22% of  Wismer-Martin's  total
revenues for the year ended June 30, 1995.

Employees

     As of July 31, 1996, Wismer-Martin and its subsidiary had 103 employees, of
whom 31 were in software design and  development,  11 in marketing and sales, 33
in customer support, 10 in installation, and 18 in administration. Wismer-Martin
believes  that its  future  success  is  dependent  in part upon its  ability to
continue  to  attract  and  retain  highly  skilled  technical,   marketing  and
management personnel.

                                       45
<PAGE>

       None of Wismer-Martin's employees is subject to a collective bargaining
agreement and Wismer-Martin has never experienced a work stoppage.

Description of Property

     Wismer-Martin's   headquarters   are  housed  in  a  17,500   square   foot
company-owned building in Mead, Washington.  Additionally,  Wismer-Martin leases
office space in the following cities;

<TABLE>
<CAPTION>
 Location                                       Monthly Lease Rental                      Expiration Date
 -------                                        --------------------                     ----------------
<S>                                                       <C>                        <C> 
N. 10220 Nevada ...........................               $2,634                     September 30, 1997
Spokane, Washington

6912-220th S.W.............................               $4,436                          July 30, 1997
Mountlake Terrace, Washington

4275 Executive Square......................               $8,000(1)                       June 30, 1998
La Jolla, California

- --------------
</TABLE>

(1)  The monthly lease amount is shown net of sublease income.

     Management believes that those existing facilities are adequate for present
and future operating needs.

Legal Proceedings

     Wismer-Martin  is a defendant  from time to time in routine  lawsuits which
are incidental to its business. Wismer-Martin believes that none of such current
proceedings, individually or in the aggregate, if adversely decided, will have a
material adverse effect upon  Wismer-Martin's  financial condition or results of
operation.

Security Ownership of Certain Beneficial Owners and Management

     The following table sets forth certain information as of July 31, 1996, (a)
by each person who is known by  Wismer-Martin to beneficially own more than five
percent of Wismer-Martin  Common Stock,  (b) by each executive  officer named in
the Summary  Compensation  table and each director of Wismer-Martin,  and (c) by
all executive  officers and directors of  Wismer-Martin  as a group.  Shares not
outstanding  but  deemed  beneficially  owned  by  virtue  of  the  right  of an
individual  or group to acquire  them within 60 days are treated as  outstanding
only when  determining  the amount and  percentage  owned by such  individual or
group.  Unless otherwise noted,  each person or group identified has sole voting
and investment power with respect to the shares shown.  Common Stock is the only
class of shares issued by Wismer-Martin.

<TABLE>
<CAPTION>
                                                                   Number of Shares                   Percentage of
Name and Address of Beneficial Owner                             Beneficially Owned(1)                Common Stock
- -----------------------------------                             ---------------------               ---------------
<S>                                                                     <C>                           <C>
Executive Officers and Directors

Ronald Holden...........................................                7,679,916(2)                            47%
12828 N. Newport Highway
Mead, WA 99021

Clarence H. Barnes, Ph.D. ..............................                   32,000                      Less than 1%
Glen E. Martin .........................................                  363,333(3)                           2.2%
John F. Perez ..........................................                  642,000(4)                           3.9%
William D. Engel .......................................                   10,000                      Less than 1%
Mehdi Moussavi .........................................                  100,000(5)                   Less than 1%

All executive officers and directors
  as a group ...........................................                8,827,249                             54.1%

Other Holders of More than Five Percent

Stanley T. Hatch .......................................                 853,500(6)                            5.2%
North 1619 Westpoint Road
Spokane, Washington 99201

Ivory and Sime Enterprise Capital PLC...................                1,045,000(7)                           6.4%
One Charlotte Square
Edinburgh, Scotland EH2 4DZ
</TABLE>
- ------------

(1)  Unless  otherwise  stated,  beneficial  ownership  is based  upon the total
     outstanding stock at July 31, 1996 of 16,324,495.

                                       46
<PAGE>

(2)  These  shares,  3,757,216 of which are  beneficially  owned  jointly by Mr.
     Holden and his wife,  may be purchased by PCN under  certain  circumstances
     pursuant to an Option and Voting  Agreement.  See  "Security  Ownership  of
     Certain Persons and Option and Voting Agreements."

(3)  These shares,  which are  beneficially  owned jointly by Mr. Martin and his
     wife,  may be purchased by PCN under certain  circumstances  pursuant to an
     Option and Voting Agreement. See "Security Ownership of Certain Persons and
     Option and Voting Agreements."

(4)  Mr. Perez holds a current stock option that allows him to purchase  200,000
     additional shares of Wismer-Martin's  common stock. If the stock option was
     exercised, Mr. Perez would be entitled to 200,000 shares of common stock in
     addition to his current  holdings of 442,000 shares.  The shares  reflected
     above include the 442,000 shares currently held plus the 200,000 shares for
     which Mr. Perez is deemed to be the beneficial owner. Mr. Perez's ownership
     is based upon the total  outstanding  stock at July 31, 1996 of  16,324,495
     plus, the 200,000 shares assumed to be exercised by Mr. Perez.  Mr. Perez's
     shares may be purchased by PCN under certain  circumstances  pursuant to an
     Option and Voting Agreement. See "Security Ownership of Certain Persons and
     Option and Voting Agreements."

(5)   Mr. Moussavi holds a current stock option that allows him to purchase
      100,000 shares of Wismer-Martin's common stock. The shares reflected above
      include the 100,000 shares for which Mr. Moussavi is deemed to be the
      beneficial owner. Mr. Moussavi's ownership is based upon the total
      outstanding stock at July 31, 1996 of 16,324,495 plus the 100,000 shares
      assumed to be exercised by Mr. Moussavi.

(6)   Includes 20,000 shares held by Mr. Hatch's wife, the beneficial ownership
      of which Mr. Hatch disclaims. These shares may be purchased by PCN under
      certain circumstances pursuant to an Option and Voting Agreement. See
      "Security Ownership of Certain Persons and Option and Voting Agreements."

(7)  These shares may be purchased by PCN under certain  circumstances  pursuant
     to an Option and  Voting  Agreement.  See  "Security  Ownership  of Certain
     Persons and Option and Voting Agreements."

Management's Discussion and Analysis of Results of Operations and Financial
Condition

     The following  discussion and analysis  should be read in conjunction  with
"Selected  Historical and Unaudited  Financial  Information --  Wismer-Martin --
Historical" and the Consolidated Financial Statements of the Company and related
notes incorporated herein by reference.  See "Incorporation of Certain Documents
by  Reference."  The  following   discussion  and  analysis   includes   certain
forward-looking statements.

Results of Operations

 Nine Months Ended March 31, 1996 Compared with Nine Months Ended March 31, 1995

     Net  Sales.  As a result of  decreases  in  service  revenues  and sales of
equipment,  software and supplies,  1996 net sales decreased from 1995 net sales
by approximately $162,000 (2%).

     Operating  Expenses.  Total  1996  operating  expenses,  compared  to 1995,
decreased by over  2,924,000  (31%) due to certain cost cutting  measures  taken
during the period, as well as, an ongoing effort to make the overall  operations
more efficient.

     Interest  expense for 1996,  compared to 1995,  decreased by  approximately
$160,000  (53%).  The  reduction  related  to  the  conversion  and  pay-off  of
convertible debentures and other debts.

     The  Company  used a  portion  of  its  prior  years'  net  operating  loss
carryforwards  to offset the income tax provision on its 1996 operating  income.
The remaining net operating loss  carryforwards  will be available to offset the
future reversal of temporary  differences created by software  development costs
and other items which give rise to deferred tax liabilities.

     The above resulted in a net income of over $1,112,000 ($0.07 per share) for
1996 compared to a net loss of $1,481,801 ($0.15 per share) for 1995.

   Fiscal Year Ended June 30, 1995 Compared to Fiscal Year Ended June 30, 1994

     On February 10, 1994,  Wismer-Martin acquired all of the outstanding shares
of common  stock of IHS.  IHS is in the  business of  developing  and  licensing
software  programs for hospitals and related  entities.  In order to pay for the
acquisition,  Wismer-Martin issued convertible  subordinated debentures having a
face value of $2,500,000 in 


                                       47
<PAGE>

exchange for the shares of common stock.  IHS's major shareholder was Mr. Ronald
Holden,  who is also a major shareholder of  Wismer-Martin.  Due to Mr. Holden's
common control of both  companies,  the  acquisition has been accounted for as a
combination of entities under common control, similar to a pooling of interests.
The  financial   statements   have  been   retroactively   restated  to  present
Wismer-Martin  and IHS on a combined  basis  effective as of June 10, 1993,  the
date on which Mr. Holden  initially had common control of both  companies.  As a
result of  including  IHS as of June 10, 1993 rather than July 1, 1992,  many of
the  increases  between 1993 and 1994 are the result of the inclusion of IHS for
the entire fiscal year 1994, while only being included for 20 days in 1993.

     At the date of acquisition,  the purchase price of $2,500,000  exceeded the
historical cost basis of the net assets of IHS by $2,533,308.  Due to the common
control of the companies,  the excess purchase price was recorded as a reduction
of  shareholders'  equity.  The results of operations of IHS are included in the
consolidated  financial  statements since June 10, 1993, the date common control
by Mr. Holden began.

     Net Sales.  Software license fees decreased by $2,868,000.  Of this amount,
approximately  $1,425,000  resulted  from fewer PHN  "network"  sales during the
fiscal  year ended June 30,  1995  ("1995") as compared to the fiscal year ended
June 30, 1994  ("1994").  The  remaining  $1,443,000  decrease was the result of
fewer software license fee transactions for hospital  information systems during
1995 as compared to 1994.

     Equipment, software and supplies sales decreased by $462,000, or about 16%,
due to a  decrease  in  the  volume  of  sales  of  personal  computer  hardware
("equipment").

     Software and hardware  maintenance  contract revenue  increased by $373,000
primarily  due to an increase  in the number of  Wismer-Martin's  customers  who
signed support contracts during 1995.

     Service revenue decreased by $774,000.  Network marketing services provided
to  customers   increased  by  approximately   $272,000,   while   Wismer-Martin
experienced a decrease  ($1,046,000) in the volume of custom  modifications  and
installation  services  provided to  hospital  customers.  This latter  decrease
coincides with the volume decrease in new software license fee sales to hospital
customers.

     Discounts  increased by $184,000  due to discounts  required as a result of
the master licenses sold to two network  customers in 1994 (see discussion below
"Fiscal  Year Ended June 30, 1994  Compared to Fiscal Year Ended June 30,  1993"
for  Software  License  Fees).  Since  Wismer-Martin  distributes  copies of the
software on behalf of its network  customers who have purchased master licenses,
Wismer-Martin  records  a  sale  for  the  list  price  of the  software,  and a
corresponding  amount as a discount (since no additional license fees are due to
Wismer-Martin).

     Operating expenses.  Cost of software license fees represents  amortization
of capitalized  software  development costs for products which are available for
general  release  to  customers.   The  amortization  of  capitalized   software
development  costs  increased  by 10% from  1994 to 1995,  which  resulted  from
additional enhancements which were completed during 1995.

     The cost of  equipment,  software and supplies  sold  decreased by $805,000
(32%). Approximately 10% of the decrease represents a volume decrease, while the
balance of the decrease (22%) resulted from Wismer-Martin's ability to negotiate
better discounts on computer  hardware  (equipment) from wholesale  distributors
than  it  was  previously  able  to  obtain  directly  from  the   manufacturer.
Wholesalers,  able to obtain greater volume  discounts than  Wismer-Martin,  are
willing to pass on a large enough discount to enable  Wismer-Martin  to purchase
computer  equipment at a lower price than  Wismer-Martin  can obtain direct from
the manufacturer.

     Cost of support and operations includes: non-technical personnel who answer
customer support calls, the cost of third-party hardware maintenance  contracts,
technical  personnel  who load  Company  and  third-party  software  on computer
systems and assist with technical issues associated with customer  support,  and
personnel who perform  consulting  services for  customers.  Cost of support and
operations  decreased by $1,186,000  (30%) from 1994 to 1995. This is the result
of a decrease of  approximately  20 employees in this area. Of the 20 employees,
approximately  5  were  transferred  to  "Product   research,   development  and
enhancements." The rest of the reductions came through  attrition,  and were not
replaced.  Many of the  employees who left were  technical  personnel who are no
longer needed due to: (1) a reduction in new sales of software license contracts
(and thus a reduction in the number of personnel required for installation), and
(2) product  improvements which have reduced the need for technical personnel to
assist with software support.

                                       48
<PAGE>

     Selling and  marketing  expenses  increased by $340,000 or 17% from 1994 to
1995. This increase in expense was due to the addition of personnel in the sales
and marketing  area,  which  occurred  during the first six months of the fiscal
year. A significant  number of these  employees  were subject to  termination in
January, 1995 as part of Wismer-Martin's cost reduction efforts.  Based on these
terminations, and voluntary resignations,  future selling and marketing expenses
are expected to decline from the level established during 1995.

     Product  research,   development  and  enhancement  costs  represent  costs
associated with  enhancements  to, and  maintenance  of,  existing  software and
research and  development  expenses.  These costs which relate to enhancement of
technologically  feasible products are capitalized and amortized  beginning when
the product is available for general  release to the customer on a straight-line
basis over the remaining economic life of the products, which is estimated to be
five (5) years.  Product  research,  development and enhancement costs increased
$1,137,000,   or  89%,  from  1994  to  1995.  This  is  the  result  of  adding
approximately  20 employees to new product  development  efforts.  Wismer-Martin
expects the new products being  developed will be ready for release between July
1995 and January 1996.

     The  amount of  product  research,  development  and  enhancement  expenses
capitalized  for 1995 increased by $812,000 as compared to 1994.  This is an 80%
increase  over  the  prior  year,  and is  approximately  60%  of the  increased
expenditures  noted  above as "Product  research,  development  and  enhancement
expenses." The increase in capitalized  software  development costs results from
the increase in personnel (noted above under "Product  research  development and
enhancement costs") performing product development.

     The increase in product,  research and enhancement  expenses as well as the
increase in capitalized  software  development  costs  reflects  Wismer-Martin's
commitment to the continuing  development of SM*RT Link and its integration with
SM*RT Practice as well as the enhancement of the IHS product line.

     General and  administrative  expenses  decreased by  $141,000,  or 4%. This
reduction  reflects  the  commencement  of  Wismer-Martin's  efforts  to control
overhead  expenses  such as  executive  salaries and rent  expense.  General and
administrative expenses are expected to continue to decline in 1996.

     Interest expense has increased  $206,000 from 1994 to 1995. The increase in
interest  expense  resulted  from: (i) the issuance of $2,500,000 in convertible
subordinated  debentures on February 10, 1994; and (ii) increased  borrowings on
Wismer-Martin's line of credit (notes payable to bank).

     During 1995,  Wismer-Martin reported an income tax benefit of approximately
$342,000 as compared to an income tax  provision  of $265,000 in 1994.  The 1995
benefit is primarily  due to the creation of net  operating  loss  carryforwards
resulting from the 1995 net operating loss which Wismer-Martin  believes will be
available  to offset the future  reversal of  temporary  differences  created by
software  development  costs and other  items  which give rise to  deferred  tax
liabilities.  The remaining net deferred tax asset is offset 100% by a valuation
allowance as  management  could not  determine  that it was more likely than not
that this asset would be realized.

     The  factors  discussed  above  resulted  in a net  loss  of  approximately
$1,377,000 during 1995, as compared to net income of $698,000 during 1994.

   Fiscal Year Ended June 30, 1994 Compared to Fiscal Year Ended June 30, 1993

     Net Sales.  Software license fees increased by $2,916,000 during the fiscal
year ended June 30,  1994  ("1994")  as compared to the year ended June 30, 1993
("1993").  The primary  reason for the  increase was the signing of two regional
"network"  contracts  which  generated  approximately  $1,675,000  in additional
software  license fee  revenues  for  Wismer-Martin.  These  contracts  gave the
customers  (insurance  providers)  unlimited  use of certain of  Wismer-Martin's
software  products  within  specified  geographical  regions of  Washington  and
Alaska.  The  remaining  $1,241,000 is the result of the inclusion of IHS in the
results of operations for the full fiscal year 1994, as compared to only 20 days
(June 10, 1993 -- the date common control was established between  Wismer-Martin
and IHS -- to June 30, 1993) for fiscal year 1993.

     Equipment,  software and supplies sales decreased by $138,000, or about 5%,
due to a decrease in the prices  Wismer-Martin  was able to charge for  personal
computer hardware.

     Software and hardware  maintenance  contract revenue increased by $876,000,
or 33% primarily due to an increase in the number of  Wismer-Martin's  customers
who signed support contracts during 1994.

                                       49
<PAGE>

     Service  revenue  increased  by  $2,784,000.   Network  marketing  services
provided to customers increased by approximately  $920,000,  while the inclusion
of IHS for the full  fiscal year 1994 added  $1,864,000  in  additional  service
revenues.

     Discounts  increased by $351,000  due to discounts  required as a result of
the master  licenses sold to two large  customers,  noted above under  "Software
license fees." Since Wismer-Martin  distributes copies of the software on behalf
of its network  customers  who have  purchased  master  licenses,  Wismer-Martin
records a sale for the list price of the software, and a corresponding amount as
a discount (since no additional license fees are due to Wismer-Martin).

     Operating   expenses.   Cost  of  software   license  fees  represents  the
amortization of capitalized  software  development  costs.  The  amortization of
capitalized  software development costs increased by $242,000 from 1993 to 1994.
This  increase  is the result of  additional  enhancements  that were  completed
during  1994.  Of the total  increase,  $212,000  came from new  products  being
developed to add to the IHS product line.

     Cost of equipment,  software and supplies  sold  increased by $26,000 or 1%
from 1993 to 1994 as a result of a slight  increase  in the  volume of  hardware
sales.

     Cost of support and operations  increased  $1,865,000 from 1993 to 1994. Of
this  increase  $1,796,000 is the result of the  additional  cost of support and
operations for IHS for a full year (1994) as compared to only 20 days of expense
in 1993. Cost of support and operations for Wismer-Martin only increased $69,000
or 4% (as a percentage of Wismer-Martin-only  expenses) is due to an increase in
sales staff from the prior year.

     Product  research,  development,  and  enhancement  expenses  increased  by
$592,000  from 1993 to 1994.  $354,000  of this  increase  is the  result of the
additional  cost of support  and  operations  for IHS for a full year  (1994) as
compared  to only 20 days of expense  in 1993.  The  increase  in  expenses  for
Wismer-Martin  were  $238,000  or 35%  (as a  percentage  of  Wismer-Martin-only
expenses),  and is due to an  increase  in the  number  of  technical  personnel
recruited for product  development and enhancement.  Wismer-Martin has increased
the  number of staff to  concentrate  on  enhancing  existing  products  to take
advantage  of  the  technological  changes  in  computer  hardware  as  well  as
significantly enhancing the functionality of its software products.

     The costs  capitalized for software  enhancements  increased by $351,000 or
54% from 1993 to 1994.  $267,000 of this increase is the result of the inclusion
of capitalized development and enhancements for IHS 1994 (IHS had no capitalized
research,  development  and  enhancement  expenses  in 1993).  The  increase  in
expenses  capitalized for Wismer-Martin  were $84,000 or 13% (as a percentage of
Wismer-Martin-only expenses), and is due to Wismer-Martin's increased efforts in
enhancing  the  SM*RT  Link  product  and  its  SM*RT  Practice  product.  Costs
associated  with  enhancements  are capitalized and amortized over three to five
years. Research and development costs are expensed as incurred.

     General and  administrative  expenses  increased by  $1,888,000 or 94% from
1993 to 1994.  $1,762,000 of this increase is the result of the additional  cost
of  general  and  administrative  expenses  for IHS for a full  year  (1994)  as
compared  to only 20 days of  expense  in 1993.  Wismer-Martin's  expenses  only
increased 6.7% during the same period.

     Interest  expense  increased by  approximately  31% from $147,339 in fiscal
1993 to $192,407 in fiscal  1994.  This  increase  was a result of the  interest
incurred on the subordinated  convertible debentures which were outstanding from
February 10, 1994 through June 30, 1994.

     Wismer-Martin  adopted the provisions of Statement of Financial  Accounting
Standards No. 109,  "Accounting for Income taxes" (SFAS No. 109), effective July
1, 1993.  The  cumulative  effect of adopting  SFAS No. 109 in fiscal 1994 was a
charge to  operations  of $27,479.  SFAS No. 109 requires a company to recognize
deferred  tax  assets  and  liabilities  for  the  expected  future  income  tax
consequences  of events  that  have been  recognized  in a  company's  financial
statements.   Under  this  method,  deferred  tax  liabilities  and  assets  are
determined based on the temporary  differences  between the financial  statement
carrying amounts and tax bases of assets and liabilities using enacted tax rates
in effect  in the  years in which the  temporary  differences  are  expected  to
reverse. During the fiscal year ended June 30, 1993, Wismer-Martin accounted for
income taxes as required by Statement of Financial  accounting Standards No. 96.
The income tax provision  increased from $12,191 in fiscal 1993 to $265,107 as a
result of the increase in income from operations.

                                       50
<PAGE>

     The various factors discussed above resulted in net income of approximately
$698,000 during 1994 compared to net income of approximately $4,000 during 1993.

Liquidity and Capital Resources

     During the twelve months ended June 30, 1996, in addition to  approximately
$1,543,000  cash  provided  by  operations,   Wismer-Martin  raised  capital  of
approximately  $3,884,000 from issuance of common stock to the public investors,
$3,000,000  of which was through the  conversion of  subordinated  debentures to
shares of common stock. Wismer-Martin paid-off amounts due on its revolving line
of  credit  and note  payable  to its bank.  Additional  cash  proceeds  of over
$164,000  were  provided  from  disposition  of property,  plant and  equipment.
Wismer-Martin  invested  over  $1,100,000  in  software  development  costs  and
approximately  $123,000 in property,  plant and equipment.  Management  believes
that  Wismer-Martin  has  sufficient  resources  to meet its  immediate  working
capital  needs.  On a long-term  basis,  management  would  consider the sale of
Wismer-Martin's   office  building  and  other  assets   necessary  to  generate
sufficient  operating  funds and to enter into joint venture  arrangements  with
strategic  alliance partners who could provide  additional  capital required for
new product development and marketing.  Although Wismer-Martin believes that its
operating plan and efforts to obtain other financing sources will be adequate to
meet its fiscal 1997  working  capital  needs,  there can be no  assurance  that
Wismer-Martin will avoid liquidity problems because of adverse market conditions
or other unfavorable events.

Changes in and Disagreements With Accountants on Accounting and Financial 
Disclosure

     Coopers & Lybrand, LLP, was engaged to perform the audit of Wismer-Martin's
financial statements for the fiscal years ended June 30, 1993 and June 30, 1994.
Without prior discussion with Wismer-Martin,  Coopers & Lybrand, LLP ("Coopers")
informed  Wismer-Martin on March 28, 1995 that the  client-auditor  relationship
between Wismer-Martin and their firm had ceased as of that date and that Coopers
would not  consent to the use of the audit  reports  issued by  Coopers  for the
fiscal  years ended June 30, 1993 and June 30, 1994 in any future  filings  with
the Securities and Exchange Commission.  The Board of Directors of Wismer-Martin
had not considered or contemplated any decision to change accountants;  in fact,
the shareholders of Wismer-Martin,  at Wismer-Martin's request, had ratified the
selection of Coopers as independent public accountants for the fiscal year ended
June 30, 1995 at the Annual Meeting of Shareholders held March 21, 1995.

     Wismer-Martin  does not  believe  that  there were any  disagreements  with
Coopers concerning any matter of accounting  principles or practices,  financial
statement disclosure, or auditing scope or procedures. Coopers, however, advised
Wismer-Martin  on April 10,  1995 that  events  should  have  been  reported  by
Wismer-Martin on Form 8-K pursuant to Item 304(a)(1)(iv)(R)(3) of Regulation SB.
Although its reports on the June 30, 1994 and June 30, 1993 financial statements
were not modified or qualified, Coopers stated that, if its 1994 report had been
reissued, consideration would be given to Wismer-Martin's ability to continue as
a going concern which could result in a modification of the 1994 report. Coopers
said that it had not carried out sufficient  procedures prior to its resignation
to conclude as to whether a  modification  of the 1994 report would be required.
Coopers  also  noted  that it made  certain  inquiries  in  connection  with the
issuance  of  the  Form  10-QSB  for  the  quarter  ended   December  31,  1994,
particularly  as to the  realizability  of the  deferred  tax asset  recorded at
December 31, 1994 in view of the  significant  loss recorded for the quarter and
six months then ended.  There were no other items  identified  by Coopers  which
would have  caused  them to refuse to  reissue  their  reports on the  financial
statement  for the  fiscal  years  ended  June  30,  1994  and  June  30,  1993.
Wismer-Martin  and Coopers agree that Coopers had not been requested to perform,
nor had it performed,  any procedures which might have assisted Wismer-Martin in
reaching an appropriate conclusion regarding the Form 10-QSB.

     On  April  26,  1995,   Wismer-Martin  engaged  BDO  Seidman,  LLP  as  its
independent  public  accountants.  No  discussions  regarding the opinion of BDO
Seidman,  LLP on accounting matters or financial reporting issues occurred prior
to their engagement as Wismer-Martin's independent certified public accountants.


                                       51
<PAGE>


                        COMPARISON OF SHAREHOLDER RIGHTS

     The  following is a summary of material  differences  between the rights of
holders of PCN Common  Stock and the rights of holders of  Wismer-Martin  Common
Stock.  PCN is  incorporated  under  the laws of the  State of New  Jersey  and,
accordingly, the rights of PCN shareholders are governed by the PCN Certificate,
the PCN By-Laws and the NJBCA.  Wismer-Martin is incorporated  under the laws of
the  State  of  Washington  and,   accordingly,   the  rights  of  Wismer-Martin
shareholders  are  governed by the  Wismer-Martin  Articles,  the  Wismer-Martin
By-Laws and the WBCA.

General Shareholder Vote Requirements

     The PCN  Certificate  provides  that each  outstanding  share of PCN Common
Stock  shall be entitled  to one vote on each  matter  submitted  to a vote at a
meeting  of  shareholders.   The   Wismer-Martin   Articles  provide  that  each
outstanding share of Wismer-Martin Common Stock shall be entitled to one vote on
each matter submitted to a vote at a meeting of shareholder.

Size and Classification of the Board of Directors

     The NJBCA  permits a New Jersey  corporation  to provide  for a  classified
board.  Subject  to  any  provisions  contained  in a New  Jersey  corporation's
certificate of incorporation,  the corporation's by-laws must specify the number
of directors  or provide that the number of directors  not be less than a stated
minimum or more than a stated maximum.  The PCN By-Laws state that the number of
directors  shall be  determined  by a  resolution  adopted by a majority  of the
board.  The PCN By-Laws do not classify the board members,  specifying  that the
shareholders  will  elect  each  member  to  a  one  year  term  at  the  annual
shareholders' meeting. The PCN board has currently fixed the number of directors
at 8.

     In the absence of provisions in the Articles of  Incorporation  classifying
the board,  the WBCA  requires  all of the  directors  to be elected  each year.
Wismer-Martin's  By-Laws provide for annual  election of all board members,  and
the Wismer-Martin  Articles state that the number of directors shall not be less
than 3 nor more than 7. The  Wismer-Martin  Board has currently fixed the number
of directors at 7.

     Neither the PCN By-Laws nor the  Wismer-Martin  By-Laws and neither the PCN
Certificate  nor the  Wismer-Martin  Articles  require  a  classified  board  of
directors or establish a fixed number of board members.

Election of Directors and Director Nomination Procedures

     The NJBCA provides that,  unless the certificate of incorporation  provides
otherwise,  directors  shall be elected by a  plurality  of the votes cast at an
election. The PCN Certificate contains no statement regarding the votes required
to elect a  director.  Under the NJBCA,  cumulative  voting in the  election  of
directors only applies if the certificate of  incorporation  provides  therefor.
The PCN Certificate does not provide for cumulative voting.

     The WBCA  provides  that, unless  otherwise  provided  in the  articles  of
incorporation, in any election of directors the candidates receiving the largest
numbers of votes cast by the shares  entitled to vote in the  election  shall be
elected. The Wismer-Martin  Articles contain no exception to this rule. The WBCA
also states that there will be cumulative  voting unless  otherwise  provided in
the articles of  incorporation.  The  Wismer-Martin  Articles  expressly  reject
cumulative voting and, therefore, the directors are elected by majority vote.

     Neither the PCN By-Laws nor the  Wismer-Martin  By-Laws and neither the PCN
Certificate  nor the  Wismer-Martin  Articles  provide for  director  nomination
procedures.

Removal of Directors

     The NJBCA  provides  that one or more  directors  of a  corporation  may be
removed  for  cause  or,  unless  otherwise   provided  in  the  certificate  of
incorporation,  without cause by the  shareholders by the affirmative  vote of a
majority  of the votes cast by the  holders of shares  entitled  to vote for the
election of directors.  The PCN By-Laws provide that an affirmative  vote of the
majority  of  votes  cast by the  holders  of  shares  entitled  to vote for the
election of  directors  can remove a director or the entire  board of  directors
with or without cause.  In addition,  the PCN By-Laws  provide that any director
may be removed for cause by action of the board of directors  and that the board
shall have the power to suspend any director pending a final  determination that
cause exists for removal.

                                       52
<PAGE>

     The WBCA provides that  shareholders  may remove one or more directors with
or without cause unless the articles of incorporation provide that directors may
be  removed  only  for  cause.  Neither  the  Wismer-Martin   Articles  nor  the
Wismer-Martin By-Laws contain any provision regarding the removal of directors.

Vacancies on the Board of Directors

     The NJBCA provides that,  unless  otherwise  provided in the certificate of
incorporation or by-laws,  any vacancies  occurring in the board,  including any
newly created directorships, may be filled by the affirmative vote of a majority
of the remaining  directors,  even though constituting less than a quorum of the
board.  The PCN By-Laws  provide that board  vacancies may be filled  (including
those  occurring  by  removal  of  directors  without  cause and  newly  created
directorships) by the affirmative vote of a majority of the remaining directors,
even though constituting less than a quorum, at a duly constituted meeting or by
a sole remaining director. The director(s) so chosen shall hold office until the
next succeeding meeting of the shareholders and until the shareholders elect and
duly qualify their successors, unless sooner displaced.

     According  to the  WBCA,  unless  the  articles  of  incorporation  provide
otherwise,  a vacancy on a board of directors may be filled by the shareholders,
the board of directors,  or if the directors in office  constitute  fewer than a
quorum of the board, by the affirmative  vote of a majority of all the directors
then  holding  office.  Under  the  Wismer-Martin  By-Laws,  a  majority  of the
remaining  board members may fill  vacancies.  Each director so selected  serves
until the shareholders elect and qualify a successor at the next annual meeting,
until the director's death, or until such director shall resign or be removed.

Special Meetings of Shareholders

     The NJBCA provides that a special meeting of the shareholders may be called
by the  president  or  the  board,  or by  such  other  officers,  directors  or
shareholders  as may be  provided  in the  by-laws.  The NJBCA also  permits the
holder or  holders  of not less  than 10% of the  shares  entitled  to vote at a
meeting to apply to the superior court, which, upon a showing of good cause, can
order a special  meeting  in a summary  manner.  According  to the PCN  By-Laws,
special  meetings may be called by the  chairman,  president  or the board.  The
chairman and  secretary  can also call a meeting at the request of  shareholders
owning a majority in amount of the entire capital stock issued and  outstanding.
The request must state the purpose or purposes of the meeting. Notice of special
meetings  must indicate the place,  date and time of the meeting;  the person(s)
calling the meeting; and the meeting's purpose.

     The WBCA  provides  that a  corporation  shall  hold a special  meeting  of
shareholders  if called by the board  directors,  other  individuals  authorized
under the corporation's by-laws or articles of incorporation or the holder(s) of
at least 10% of all the votes  entitled  to be cast on any issue  proposed to be
considered at the proposed special  meeting.  The WBCA,  however,  also provides
that the right of  shareholders  to call a special  meeting  may be  limited  or
denied  to  the  extent   provided  in  the  articles  of   incorporation.   The
Wismer-Martin  By-Laws allow either the president or the board to call a special
meeting.  If shareholders  holding  one-tenth  (1/10) of the voting power of all
shareholders request a special meeting,  then the secretary or other person duly
authorized  shall call the  meeting  and the notice  shall  state the  meeting's
purpose(s).  Notice must be given to each shareholder of record not less than 20
nor more than 60 days before the date of the meeting.  Delivery  must be through
personal written notice or certified mail with return receipt requested.

Shareholder Approval of Mergers and Sales of Assets

     The  NJBCA  generally  permits a merger to  become  effective  without  the
approval of the surviving  corporation's  shareholders if the certificate of the
surviving  corporation does not change following the merger, the voting power of
the number of voting shares outstanding  immediately after the merger,  plus the
voting power of the number of voting shares  issuable as a result of the merger,
will not exceed by more than 40% the voting power of the number of voting shares
outstanding  immediately  before the merger,  and the board of  directors of the
surviving  corporation  adopts  a  resolution  approving  the  plan  of  merger.
Similarly,  the WBCA generally  permits a merger to become effective without the
approval of the surviving corporation's  shareholders provided that the articles
of the surviving corporation do not change after the merger. However, unlike the
NJBCA,  the  WBCA  requires  that  the  number  of  voting  shares   outstanding
immediately  after the merger,  plus the number of voting  shares  issuable as a
result of the merger,  may not exceed the total  number of voting  shares of the
surviving corporation  authorized by its articles immediately before the merger.
Additionally,  the WBCA requires the number of participating  shares outstanding
immediately  after the merger not to exceed  the total  number of  participating
shares  authorized by the surviving  corporation's  articles  before the merger.
Furthermore,  both  the  NJBCA  and  the  WBCA  provide  that  if the  foregoing
conditions  are not met,  the  adoption  of a plan of merger must be approved by
shareholders of the surviving corporation entitled to vote thereon.

                                       53
<PAGE>

     Under the NJBCA, a majority of the outstanding  shares of stock entitled to
vote on a merger or the sale, lease or exchange of all or substantially  all, of
a corporation's assets must approve such transactions, unless the certificate of
incorporation  requires the vote of a larger portion of the  outstanding  stock.
The PCN Certificate does not so provide.  Under the WBCA, unless the articles of
incorporation provide otherwise, a merger or sale, lease, sale exchange or other
disposition of all, or substantially all, of a corporation's assets requires the
approval  of the  holders  of  two-thirds  of the  outstanding  shares  of stock
entitled to vote thereon.  The Wismer-Martin  Articles do not contain a contrary
provision.

Amendment of Articles and By-Laws

     The NJBCA allows an amendment of a certificate of incorporation,  from time
to time,  in any and as many respects as may be desired so long as the amendment
contains  only such  provisions  as may  lawfully  be  contained  in an original
certificate of  incorporation  filed at the time of making such  amendment.  The
NJBCA  permits  the  corporation's  board of  directors  to amend or repeal  the
corporation's  by-laws,  or adopt new  by-laws,  unless (i) the  certificate  of
incorporation  reserves this power  exclusively to the  shareholders or (ii) the
shareholders in amending or repealing a by-law expressly  provide that the board
of directors may not amend or repeal such by-law.  According to the PCN By-Laws,
a majority  vote of  shareholders  or the board can amend the by-laws,  provided
that such  amendment  does not  contravene  a provision  in the  certificate  of
incorporation  or the amendment  does not alter a by-law  adopted by shareholder
resolution that reserves the right of amendment to the shareholders.

     The WBCA permits a corporation  to amend its articles of  incorporation  at
any time to add or change a provision that the articles of incorporation require
or permit,  or delete a provision the articles do not require.  The WBCA permits
the  board to amend or repeal  by-laws  unless  such  power is  reserved  to the
shareholders  in the  certificate  of  incorporation,  but  by-laws  amended  or
newly-adopted by the board may be altered or repealed by the shareholders. Under
the WBCA,  shareholders may prescribe in the by-laws that any by-law adjusted by
them  shall  not  be  altered  or  repealed  by  the  board.  According  to  the
Wismer-Martin  Articles, the Wismer-Martin Articles may be amended in any manner
prescribed or permitted by the WBCA. The Wismer-Martin By-Laws may be amended by
a special shareholders' meeting provided that shareholders receive proper notice
of the  proposed  amendment.  Additionally,  the  Wismer-Martin  By-Laws  may be
amended by an affirmative vote of a majority of the board of directors  provided
that such amendment does not alter the qualifications,  classification,  term of
office or compensation of the board members in any way.

Preemptive Rights

     The NJBCA and WBCA both provide  that unless the articles of  incorporation
state  otherwise,   preemptive   rights  exist.  The  PCN  Certificate  and  the
Wismer-Martin Articles both expressly deny preemptive rights.

Payment of Dividends

     Unless  there  are  other  restrictions  contained  in the  certificate  of
incorporation,  the NJBCA generally  provides that a corporation may declare and
pay  dividends  on its  outstanding  stock  so  long as the  corporation  is not
insolvent and would not become insolvent as a result of the dividend payment.

     The WBCA provides  that  dividends may only be paid if, after giving effect
to the  dividend,  a company will be able to pay its debts as they become due in
the  ordinary  course of business and its total assets will not be less than the
sum of its total  liabilities  plus the  amount  that  would be  needed,  if the
company were dissolved at the time of the dividend,  to satisfy the preferential
rights of persons  whose  right to payment is superior  to those  receiving  the
dividend.

Inspection of Books and Records

     Under the NJBCA,  any  shareholder  who has been a shareholder for at least
six months or who holds,  or is authorized by a person who holds, at least 5% of
the  outstanding  shares of any class or series of stock has the right,  for any
proper  purpose,  to inspect the  minutes of the  proceedings  of  shareholders,
records  of  accounts  and  the  record  of  shareholders.  Notwithstanding  the
foregoing  requirements,  a court may, upon a showing of proper purpose, issue a
court  order  permitting  a  shareholder  to  examine  the books and  records of
accounts,  minutes  and record of  shareholders.  In  addition,  the PCN By-Laws
provide that any shareholder attending a meeting may, upon request,  inspect the
list of shareholders.

     The WBCA  provides  that a  shareholder  of a  corporation  is  entitled to
inspect and copy, during regular business hours at the  corporation's  principal
office, the following:  the corporation's by-laws and articles of incorporation;

                                       54
<PAGE>

shareholders'  meeting  minutes and records of all action taken by  shareholders
without a meeting for the past three years; balance sheets and income statements
for the past three years; all written  communications to shareholders  generally
within the past three years;  a list of the names and business  addresses of its
current  directors  and officers;  and its initial  report or most recent annual
report delivered to the secretary of state. The WBCA provides that a shareholder
may only inspect board minutes,  accounting records,  and record of shareholders
if they make the request in good faith, with reasonable  particularity,  and the
records are directly connected with the shareholder's proper purpose.

Indemnification and Limitation of Liability of Officers and Directors

     The PCN Certificate  provides for indemnification of directors and officers
to the fullest  extent  permitted  by New Jersey law.  The NJBCA does not permit
indemnification  of officers or directors with respect to an act or omission (i)
in  breach  of  such  person's  duty  of  loyalty  to  the  corporation  or  its
shareholders,  (ii) not in good faith or  involving a knowing  violation  of the
law, or (iii) resulting in receipt of an improper personal benefit.

     The  Wismer-Martin  Articles provides for  indemnification  of officers and
directors to the fullest extent  permitted by Washington  law. The WBCA does not
permit such  indemnification if the acts or omissions of the person are adjudged
to be in violation of the law, if such person is liable to the  corporation  for
an  unlawful  distribution  under  Section  23A.08.450  of the  Revised  Code of
Washington,  or if the individual  personally  received a benefit to which he or
she was not entitled.

                                  LEGAL OPINION

     The  validity  of the  shares of PCN  Common  Stock  offered  by this Proxy
Statement and Prospectus  will be passed upon for PCN by Gordon Altman  Butowsky
Weitzen Shalov & Wein, 114 West 47th Street, New York, New York 10036.

                                    EXPERTS

     The consolidated  financial statements and the financial statement schedule
of PCN as of  December  31,  1995 and  1994,  and for  each of the  years in the
three-year period ended December 31, 1995 have been incorporated by reference in
this Proxy  Statement  and  Prospectus  in reliance upon the report of KPMG Peat
Marwick LLP, independent certified public accountants, incorporated by reference
herein  and upon  the  authority  of said  firm as  experts  in  accounting  and
auditing.

     The financial statements of CUSA Technologies,  Inc. Medical and Commercial
Divisions as of March 31, 1996 and for the  nine-month  period then ended,  have
been  incorporated  by  reference  in this Proxy  Statement  and  Prospectus  in
reliance upon the report of KPMG Peat Marwick LLP, independent  certified public
accountants,  incorporated by reference  herein,  and upon the authority of said
firm as experts in accounting and auditing.

     The financial  statements  as of June 30, 1995 and 1994, of  Wismer-Martin,
Inc., incorporated by reference in this Proxy Statement and Prospectus have been
audited by BDO Seidman,  LLP, independent  certified public accountants,  to the
extent and for the periods  set forth in their  reports  incorporated  herein by
reference,  and are incorporated herein in reliance upon such report, given upon
the authority of said firm as experts in auditing and accounting.

                             SOLICITATION OF PROXIES

     Wismer-Martin  will bear the expenses in  connection  with the printing and
mailing of this Proxy  Statement and  Prospectus.  The costs of  solicitation of
proxies will be borne by Wismer-Martin.  Wismer-Martin  will reimburse  brokers,
fiduciaries, custodians and other nominees for reasonable out-of-pocket expenses
incurred  in  sending  this  Proxy  Statement  and  Prospectus  and other  proxy
materials  to, and  obtaining  instructions  relating  to such  materials  from,
beneficial owners of stock.  Wismer-Martin  shareholder proxies may be solicited
by  directors,   officers,  regular  employees  or  the  financial  advisors  of
Wismer-Martin in person, by letter or by telephone or telegram.

     Wismer-Martin will also reimburse custodians,  nominees and fiduciaries for
forwarding  proxies and proxy materials to the beneficial  owners of their stock
in accordance with regulations of the SEC and NASDAQ Stock Market.

                                   BY ORDER OF THE BOARD OF DIRECTORS
                                   DIRECTORS OF WISMER-MARTIN, INC.


                                   Mehdi Moussavi
                                   Secretary



                                       55
<PAGE>


                                                                        ANNEX A


                          AGREEMENT AND PLAN OF MERGER

     AGREEMENT AND PLAN OF MERGER, dated June 20, 1996 (the "Agreement"), by and
among WISMER-MARTIN,  INC., a Washington corporation (the "Company"),  PHYSICIAN
COMPUTER  NETWORK,  INC.,  a  New  Jersey  corporation  ("PCN"),  and  NORTHWEST
ACQUISITION CORP., a Washington corporation that is a wholly-owned subsidiary of
PCN ("Merger Sub").

     WHEREAS,  the Boards of Directors  of PCN,  Merger Sub and the Company have
each  determined  that  it  is  in  the  best  interests  of  their   respective
stockholders  for Merger Sub to merge with and into the  Company  upon the terms
and subject to the conditions set forth herein, and have approved the merger;

     WHEREAS,  for federal  income tax purposes,  it is intended that the Merger
shall qualify as a  reorganization  within the meaning of Section  368(a) of the
Internal Revenue Code of 1986, as amended;

     WHEREAS,   PCN,   Merger  Sub  and  the  Company  desire  to  make  certain
representations,  warranties,  covenants and  agreements in connection  with the
merger and also to prescribe various conditions to the merger;

     NOW, THEREFORE,  in consideration of the foregoing and the mutual covenants
and agreements herein contained,  and intending to be legally bound hereby, PCN,
Merger Sub and the Company hereby agree as follows:


                                    ARTICLE I

                                   THE MERGER

     Section 1.1 The Merger.  At the Effective  Time (as defined in Section 1.2)
and subject to the terms and conditions  contained  herein,  Merger Sub shall be
merged with and into the Company (the "Merger")  (Merger Sub and the Company are
sometimes referred to herein as the "Constituent  Corporations"),  in accordance
with the  Washington  Business  Corporation  Act (the "WBCA"),  and the separate
existence  of Merger Sub shall  thereupon  cease,  and the Company  shall be the
surviving corporation of the Merger (the "Surviving Corporation").  At and after
the  Effective  Time,  the Surviving  Corporation  shall possess all the rights,
privileges,  powers and  franchises of a public as well as of a private  nature,
and  be  subject  to  all  the  restrictions,  disabilities  and  duties  of the
Constituent Corporations;  and all and singular rights,  privileges,  powers and
franchises of each of the  Constituent  Corporations,  and all  property,  real,
personal and mixed, and all debts due to either of the Constituent  Corporations
on whatever account,  as well as for stock subscriptions and all other things in
action or belonging to each of the Constituent Corporations,  shall be vested in
the Surviving  Corporation;  and all property,  rights,  privileges,  powers and
franchises,  and all and every other interest shall be thereafter as effectually
the  property  of the  Surviving  Corporation  as they  were of the  Constituent
Corporations;  and the title to any real estate vested by deed or otherwise,  in
either  of the  Constituent  Corporations,  shall  not  revert  or be in any way
impaired;  but all rights of creditors and all liens upon any property of either
of the Constituent  Corporations shall be preserved  unimpaired;  and all debts,
liabilities and duties of the Constituent  Corporations shall thenceforth attach
to the Surviving Corporation,  and may be enforced against it to the same extent
as if said debts and liabilities had been incurred by it. At PCN's election, any
direct  wholly-owned  Subsidiary  (as defined in Section  1.7(c)  hereof) of PCN
incorporated  under the laws of the state of Washington may be  substituted  for
Merger Sub as a  constituent  corporation  in the Merger,  in which  event,  the
parties shall  execute an  appropriate  amendment to this  Agreement in form and
substance  reasonably  satisfactory  to PCN and the  Company in order to reflect
such substitution.

     Section 1.2 Effective Time of the Merger. Subject to the provisions of this
Agreement,  a certificate of merger in substantially the form attached hereto as
Exhibit I (the  "Certificate  of Merger") shall be duly  prepared,  executed and
acknowledged  by the  Surviving  Corporation  and  thereafter  delivered  to the
Secretary  of State of the State of  Washington,  for filing as  provided in the
WBCA, as soon as practicable on or after the Closing Date (as defined in Section
1.3). The Merger shall become  effective  upon the filing of the  Certificate of
Merger with the  Secretary of State of the State of Washington  (the  "Effective
Time" and the date on which the  Effective  Time occurs is referred to herein as
the "Effective Date").

     Section 1.3 Closing.  The closing of the Merger (the  "Closing")  will take
place as soon as practicable (but in no event later than the second Business Day
(as defined  below))  after the latest to occur of the  conditions  set forth in
Article VI having been  fulfilled or having been waived in accordance  with this
Agreement (the "Closing Date"),


                                      A-1

<PAGE>


at the offices of Gordon Altman  Butowsky  Weitzen  Shalov & Wein, 114 West 47th
Street,  New York, New York 10036,  unless another date or place is agreed to in
writing by the parties hereto.  For purposes of this  Agreement,  "Business Day"
means any day other  than:  (i) a Saturday  or  Sunday;  and (ii) a day on which
banks in the  state of  Washington  or the  state  of New York are  required  or
permitted to be closed.

     Section 1.4 Articles of  Incorporation.  The Articles of  Incorporation  of
Merger Sub, as in effect  immediately  prior to the Effective Time, shall be the
articles of  incorporation of the Surviving  Corporation,  until duly amended in
accordance  with the terms thereof and the WBCA,  except for the changes thereto
specified in the Certificate of Merger.

     Section 1.5  By-Laws.  The By-Laws of Merger Sub, as in effect  immediately
prior to the Effective Time, shall be the by-laws of the Surviving  Corporation,
until duly  amended in  accordance  with the terms  thereof,  of the articles of
incorporation of the Surviving Corporation and of the WBCA.

     Section 1.6 Directors  and  Officers.  The directors and officers of Merger
Sub at the  Effective  Time shall,  from and after the  Effective  Time,  be the
directors and officers of the Surviving  Corporation until the successors of all
such persons  shall have been duly elected or appointed  and  qualified or until
their earlier  death,  resignation  or removal in accordance  with the Surviving
Corporation's Articles of Incorporation and by-laws.

     Section 1.7 Conversion of Shares.  At the Effective  Time, by virtue of the
Merger  and  without  any  action on the part of the holder of any shares of the
Common Stock (as defined below) or of any capital stock of Merger Sub:

          (a) Each share of the capital  stock of Merger Sub which is issued and
     outstanding immediately prior to the Effective Time shall be converted into
     and become  one fully paid and  nonassessable  share of common  stock,  par
     value $.001 per share, of the Surviving Corporation.

          (b) Each share of the  Company's  common  stock,  par value  $.001 per
     share (the "Common  Stock"),  which is issued and  outstanding  immediately
     prior to the Effective Time,  except those held by stockholders who validly
     perfect  dissenters'  rights under the WBCA,  shall be  converted  into the
     right to receive  (the "Merger  Consideration"):  (x) the Common Stock Cash
     Consideration (as defined in Section 1.8 below),  without interest; and (y)
     that number (the "Conversion Number") of shares of duly authorized, validly
     issued,  fully paid and  non-assessable  shares of PCN's common stock, $.01
     per share (the "PCN  Stock"),  computed in  accordance  with  Section  1.9.
     Anything  contained in this Agreement to the contrary  notwithstanding,  in
     the event that the per share Market Price (as defined in Section 1.9 below)
     of PCN Stock on the Trigger  Date (as defined in Section 1.9 below) is less
     than or equal to nine dollars ($9.00), then, at PCN's option (the "All Cash
     Option"), in lieu of the consideration  described in clauses (x) and (y) of
     the immediately preceding sentence,  the "Merger Consideration" shall be an
     amount in cash equal to (A)  $14,000,000;  divided by (B) the Common  Share
     Number (as defined in Section 1.8 below).  All shares of Common Stock,  and
     each holder of a  certificate  representing  such  shares of Common  Stock,
     shall cease to have any rights with  respect  thereto,  except the right to
     receive  the  Merger  Consideration  to be issued or paid in  consideration
     therefor upon  surrender of such  certificate  in  accordance  with Section
     1.11, without interest.

          (c) All  shares of the  Common  Stock and all other  shares of capital
     stock of the Company  that are owned by the  Company as treasury  stock and
     any shares of the  Common  Stock or other  shares of  capital  stock of the
     Company owned by the Company or any wholly-owned Subsidiary of the Company,
     shall be canceled.  As used in this Agreement,  a "Subsidiary" of any party
     means  any  corporation  or other  organization,  whether  incorporated  or
     unincorporated,  of which (i) such  party or any other  Subsidiary  of such
     party is a general partner (excluding partnerships, the general partnership
     interests  of which held by such party or any  Subsidiary  of such party do
     not have a majority of the voting  interests in such  partnership)  or (ii)
     50% or more of the  securities  or other  interests  having by their  terms
     ordinary  voting  power to elect a majority  of the Board of  Directors  or
     others  performing  similar  functions with respect to such  corporation or
     other  organization  is directly or indirectly  owned or controlled by such
     party or by any one or more of its  Subsidiaries,  or by such party and one
     or more of its Subsidiaries.

     Section 1.8 Common Stock Cash  Consideration.  As used herein,  the "Common
Stock Cash Consideration"  means the amount equal to: (a) $1,980,000 (subject to
adjustment as provided in Section  1.9);  divided by (b) the Common Share Number
(as defined below).  As used herein,  the "Common Share Number" means the number
of  shares of Common  Stock  issued  and  outstanding  immediately  prior to the
Effective Time.


                                      A-2
<PAGE>


     Section 1.9 Conversion  Number. As used herein, the Conversion Number means
the amount  equal to: (a) the  Adjusted  PCN Share  Number (as  defined  below);
divided by (b) the Common Share Number. As used herein,  the "Adjusted PCN Share
Number" means 935,000;  provided,  however, that, in the event that on the third
business day prior to the  Effective  Time (the  "Trigger  Date") the  aggregate
Market  Price (as  hereinafter  defined) of 935,000  shares of PCN Stock is: (i)
less than  $9,350,000,  then the Adjusted PCN Share Number shall be increased to
equal such number of shares of PCN Stock as has an aggregate Market Price on the
Trigger Date equal to $9,350,000; or (ii) is greater than $11,453,750,  then the
Adjusted  PCN Share  Number shall be decreased to equal such number of shares of
PCN  Stock  as has an  aggregate  Market  Price  on the  Trigger  Date  equal to
$11,453,750.  Notwithstanding  the foregoing,  in the event that stockholders of
the Company  exercise  dissenters'  rights as provided in Section 1.10 and, as a
result,  assuming  for such purpose  that each  Dissenting  Share (as defined in
Section 1.10) is entitled to receive,  in lieu of the Merger  Consideration,  an
amount in cash (the  "Dissenting  Share  Amount")  equal to (i) the Common Stock
Cash Consideration plus (ii) the Market Price of the Conversion Number of shares
of PCN Stock on the Trigger Date, the aggregate Market Price of the Adjusted PCN
Share Number of PCN Stock (less the aggregate number of shares of PCN Stock into
which the Dissenting Shares would have been convertible  pursuant to Section 1.7
had such dissenting stockholders not demanded dissenters' rights) on the Trigger
Date  constitutes less than  eighty-percent  (80%) of the sum (the "Total Merger
Consideration")  of the aggregate  dollar value of (A) the Merger  Consideration
plus (B) the Dissenting  Share Amount,  then (x) the aggregate  number of shares
PCN Stock  issued to  non-Dissenting  Shareholders  (the "Stock  Consideration")
shall be  increased  to equal  such  number  of  shares  of PCN  Stock as has an
aggregate  Market  Price  equal  to  eighty-percent  (80%) of the  Total  Merger
Consideration  and (y) the aggregate  amount of Common Stock Cash  Consideration
paid to non-Dissenting  Shareholders  shall be decreased by the aggregate Market
Price of the  number of shares  of PCN  Stock  added to the Stock  Consideration
pursuant to the preceding clause (x). As used herein, the "Market Price" of each
share of PCN Stock means the average of the closing sale price of a share of PCN
Stock as reported on the NASDAQ  Stock  Market  during the fifteen  (15) trading
days immediately preceding the date of the determination.

     Section 1.10 Dissenters' Rights.  Shares of Common Stock that have not been
voted for the  adoption  of the  Merger and with  respect  to which  dissenters'
rights  shall  have  been  properly   demanded  in  accordance   with  the  WBCA
("Dissenting  Shares")  shall not be  converted  into the right to  receive  the
Merger  Consideration  as provided in Section 1.7 on or after the Effective Time
unless  and until the  holder  of such  shares  withdraws  his  demand  for such
appraisal in  accordance  with  applicable  law or becomes  ineligible  for such
appraisal,  at which time such shares shall be converted  into and represent the
right to receive the Merger  Consideration,  without  interest,  as set forth in
Section 1.7. The Company shall give PCN: (i) prompt notice of any written demand
for appraisal,  withdrawals of demands for appraisal and any other instrument in
respect thereof received by the Company;  and (ii) the opportunity to direct all
negotiations and proceedings with respect to demands for appraisal.  The Company
will not voluntarily  make any payment with respect to any demands for appraisal
and will not,  except with the prior written  consent of PCN, settle or offer to
settle any such demand.

     Section 1.11  Exchange of Certificates.

     (a) Exchange Agent.  As of the Effective Time, PCN shall deposit,  or shall
cause to be deposited,  with American Stock Transfer and Trust Company,  or such
other bank or trust  company  which shall be mutually  acceptable to the parties
hereto (the  "Exchange  Agent"),  for the benefit of holders of shares of Common
Stock,  for exchange in accordance with this Section 1.11,  through the Exchange
Agent: (i) certificates representing the Adjusted PCN Share Number of PCN Stock;
(ii) the estimated  amount of cash to be paid pursuant to Section  1.11(e);  and
(ii) all funds  necessary  to pay the Cash  Consideration  for  shares of Common
Stock  converted  by  reason  of the  Merger  (in each case  other  than  Merger
Consideration   with  respect  to  Dissenting   Shares)   (together,   all  such
certificates and cash being hereinafter referred to as the "Exchange Fund"). The
Exchange Agent shall deliver,  pursuant to  irrevocable  instructions,  the Cash
Consideration,  the shares of PCN Stock  contemplated  to be issued  pursuant to
Section  1.7 and the cash to be issued  pursuant  to Section  1.11(e) out of the
Exchange Fund. The Exchange Fund shall not be used for any other purpose.

     (b)  Exchange  Procedures.  As soon as  reasonably  practicable  after  the
Effective  Time,  the  Exchange  Agent  shall mail to each holder of record of a
certificate  or  certificates  which  immediately  prior to the  Effective  Time
represented outstanding shares of Common Stock (the "Certificates") whose shares
were  converted into the right to receive the Merger  Consideration  pursuant to
Section 1.7: (i) a letter of  transmittal  (which  shall  specify that  delivery
shall be effected,  and risk of loss and title to the  Certificates  shall pass,
only upon  delivery of the  Certificates  to the Exchange  Agent and shall be in
such form and have such other  provisions as PCN and the Company may  reasonably

                                      A-3

<PAGE>


specify);  and (ii)  instructions  for use in  effecting  the  surrender  of the
Certificates in exchange for certificates  representing  the Cash  Consideration
and shares of PCN Stock. Upon surrender of a Certificate for cancellation to the
Exchange  Agent or to such  other  agent or agents as may be  appointed  by PCN,
together  with  such  letter  of  transmittal,  duly  executed,  and such  other
documents as may be  reasonably  required by the Exchange  Agent,  the holder of
such  Certificate  shall be entitled to receive in exchange  therefor the Merger
Consideration  which  such  holder  has the right to  receive  pursuant  to this
Section 1.17, and the Certificate so surrendered shall forthwith be canceled. In
the event of a transfer of ownership of Common Stock which is not  registered in
the transfer records of the Company,  the Cash  Consideration may be paid to and
certificates representing the proper number of shares of PCN Stock may be issued
to a transferee if the Certificate  representing  such Common Stock is presented
to the Exchange  Agent,  accompanied  by all documents  required to evidence and
effect such transfer and by evidence that any  applicable  stock  transfer taxes
have been paid.  Until  surrendered as  contemplated  by this Section 1.11, each
Certificate  shall be deemed at any time after the  Effective  Time to represent
only the right to receive  upon such  surrender  the Merger  Consideration.  The
Exchange Agent shall not be entitled to vote or exercise any rights of ownership
with respect to the PCN Stock held by it from time to time hereunder.

     (c) Distributions with Respect to Unexchanged Shares. No dividends or other
distributions  with respect to PCN Stock with a record date after the  Effective
Time shall be paid to the holder of any  unsurrendered  Certificate with respect
to the shares of PCN Stock represented  thereby and no cash payment  (including,
without limitation,  cash payment in lieu of fractional shares) shall be paid to
any such  holder  pursuant  to this  Section  1.11 until the  surrender  of such
Certificate  in  accordance  with this  Section  1.11.  Subject to the effect of
applicable laws,  following  surrender of any such  Certificate,  there shall be
paid to the holder of the  Certificates  representing  whole shares of PCN Stock
issued  in  exchange  therefor,  without  interest:  (i) at  the  time  of  such
surrender,  the amount of  dividends or other  distributions  with a record date
after the Effective Time  theretofore  paid with respect to such whole shares of
PCN Stock; and (ii) at the appropriate  payment date, the amount of dividends or
other  distributions  with a record date after the  Effective  Time but prior to
such surrender and with a payment date subsequent to such surrender payable with
respect to such whole shares of PCN Stock.

     (d) No  Further  Ownership  Rights in Common  Stock.  All shares of the PCN
Stock issued,  together with the Cash Consideration paid, upon the surrender for
exchange of Certificates in accordance with the terms hereof (including any cash
paid pursuant to Section 1.11(e)) shall be deemed to have been issued (and paid)
in full satisfaction of all rights pertaining to such shares of Common Stock and
there shall be no further  registration of transfers on the stock transfer books
of  the  Surviving  Corporation  of  the  shares  of  Common  Stock  which  were
outstanding  immediately  prior to the Effective  Time.  If, after the Effective
Time,  Certificates  are presented to the Surviving  Corporation or the Exchange
Agent for any reason,  they shall be canceled and  exchanged as provided in this
Section 1.11.

     (e) No Fractional Shares. No certificate or scrip  representing  fractional
shares  of PCN  Stock  shall  be  issued  upon the  surrender  for  exchange  of
Certificates,  and such  fractional  share  interests will not entitle the owner
thereof to vote or to any rights of a stockholder  of PCN.  Notwithstanding  any
other  provision  of this  Agreement,  each  holder of  shares  of Common  Stock
exchanged  pursuant  to the Merger who would  otherwise  have been  entitled  to
receive a  fraction  of a share of PCN Stock  (after  taking  into  account  all
Certificates  delivered by such holder) shall  receive,  in lieu  thereof,  cash
(without  interest) in an amount equal to such fractional part of a share of PCN
Stock  multiplied  by the Market Price of a share of PCN Stock on the  Effective
Date.

     (f)  Termination  of Exchange  Fund. Any portion of the Exchange Fund which
remains  undistributed  for 180 days after the Effective Time shall be delivered
to  PCN,  upon  demand,  and  any  holders  of the  Certificates  who  have  not
theretofore  complied with this Section 1.11 shall  thereafter  look only to PCN
for delivery of the Merger Consideration.

     (g) No  Liability.  None of PCN,  Merger Sub,  the Company nor the Exchange
Agent shall be liable to any holder of shares of Common  Stock or PCN Stock,  as
the case may be, for such shares (or  dividends  or  distributions  with respect
thereto) or cash from the Exchange  Fund (or by PCN after the Exchange  Fund has
terminated)  delivered to a public official pursuant to any applicable abandoned
property,  escheat  or  similar  law.  At  such  time as any  amounts  remaining
unclaimed  by holders of any such shares  would  otherwise  escheat to or become
property of any Governmental Entity (as defined in Section 2.2(c)), such amounts
shall,  to the extent  permitted by applicable  law,  become the property of PCN
free  and  clear  of any  claims  or  interest  of any  such  holders  or  their
successors, assigns or personal representatives previously entitled thereto.


                                       A-4

<PAGE>


     (h)  Investment of Exchange  Fund. The Exchange Agent shall invest any cash
included  in the  Exchange  Fund,  as directed  by PCN,  on a daily  basis.  Any
interest and other income resulting from such investments shall be paid to PCN.

     Section 1.12 Taking Necessary Action;  Further Action.  PCN, Merger Sub and
the  Company,  respectively,  shall take all such action as may be  necessary or
appropriate  in order to effectuate  the Merger as promptly as possible.  If, at
any time after the Effective  Time, any further action is necessary or desirable
to  carry  out  the  purposes  of  this  Agreement  and to  vest  the  Surviving
Corporation  with full right,  title and  possession  to all  assets,  property,
rights,  privileges,   powers  and  franchises  of  either  of  the  Constituent
Corporations,  the  officers  and  directors  of  such  corporations  are  fully
authorized  in the name of their  corporation  or otherwise  to take,  and shall
take, all such action.


                                   ARTICLE II

              REPRESENTATIONS AND WARRANTIES OF PCN AND MERGER SUB

     PCN and Merger Sub hereby represent and warrant to the Company as follows:

     Section 2.1  Organization,  Standing and Power. Each of PCN and Merger Sub:
(i) is a corporation duly organized, validly existing and in good standing under
the laws of its jurisdiction of incorporation;  (ii) has all requisite corporate
power and corporate  authority to own,  lease and operate its  properties and to
carry on its  business as now being  conducted;  and (iii) is duly  qualified or
licensed to do business and in good standing in each  jurisdiction  in which the
business  it is  conducting,  or the  operation,  ownership  or  leasing  of its
properties,  makes such qualification or licensing necessary, other than in such
jurisdictions where the failure so to be in good standing, qualified or licensed
does not,  individually or in the aggregate,  have a Material Adverse Effect (as
defined  in  Section  8.3).  Each of PCN and  Merger  Sub  has  previously  made
available to the Company complete and correct copies of its presently  effective
Articles of Incorporation and By-Laws.

     Section 2.2 Authority  Relative to This  Agreement.  (a) PCN and Merger Sub
have all  necessary  corporate  power and  corporate  authority  to execute  and
deliver this Agreement and each PCN Document (as  hereinafter  defined) to which
PCN and/or  Merger  Sub,  as the case may be, is a party and to  consummate  the
transactions contemplated hereby and thereby. The execution and delivery of this
Agreement  by PCN and Merger Sub and of each PCN  Document by PCN and/or  Merger
Sub,  as the case may be,  and the  consummation  by PCN and  Merger  Sub of the
transactions  contemplated  hereby and thereby have been duly  authorized by all
necessary corporate action on the part of PCN and Merger Sub. This Agreement has
been,  and each PCN Document  will be, duly executed and delivered by PCN and/or
Merger Sub, as the case may be, and,  assuming this  Agreement  constitutes  the
valid and binding  agreement of the Company,  constitutes  the legal,  valid and
binding  obligation  of PCN and/or  Merger Sub, as the case may be,  enforceable
against PCN and/or Merger Sub, as the case may be, in accordance with its terms.
As used herein, PCN Document means each or any instrument executed and delivered
by PCN or Merger Sub in connection with the transactions contemplated hereby.

     (b) The execution and delivery of this Agreement by PCN and Merger Sub does
not, and the  consummation of the  transactions  contemplated  hereby by PCN and
Merger Sub will not: (i) conflict  with, or result in any violation or breach of
any provision of, the Articles of Incorporation or By-Laws of PCN or Merger Sub;
or (ii) except as to which requisite  waivers or consents have been obtained and
assuming  the  consents,  approvals,  authorizations  or permits  and filings or
notifications  referred  to in Section  2.2(c) are duly and timely  obtained  or
made, result in any violation of, or default (with or without notice or lapse of
time, or both) under,  or give rise to a right of  termination,  cancellation or
acceleration  of any obligation or the loss of a material  benefit under, or the
creation of a lien, pledge,  security interest or other encumbrance on assets or
property, right of first refusal with respect to any asset or property (any such
conflict,   violation,   default,   right  of   termination,   cancellation   or
acceleration,  loss, creation or right of first refusal, a "Violation"),  of any
loan or credit agreement, note, mortgage,  indenture, lease, or other agreement,
obligation, instrument, concession, franchise, license, judgment, order, decree,
or,  to  PCN's  knowledge,  any  statute,  law,  ordinance,  rule or  regulation
applicable to PCN and Merger Sub or their respective properties or assets.

     (c) No  consent,  approval,  order or  authorization  of, or  registration,
declaration or filing with, or permit from any court,  administrative  agency or
commission  or other  governmental  authority  or  instrumentality,  domestic or
foreign (a  "Governmental  Entity")  is  required  by or with  respect to PCN or
Merger  Sub to validly  execute  and


                                   A-5
<PAGE>


deliver this Agreement or to effect the Merger,  except for: (i) the filing with
the  Securities  and  Exchange  Commission  ("SEC") of (A) a proxy  statement in
definitive  form  relating to the meetings of the Company's  stockholders  to be
held in connection with the Merger, as amended or supplemented  (such definitive
proxy  statement,  as it may be amended or  supplemented  from time to time, the
"Proxy Statement");  (B), and effectiveness of, a registration statement on Form
S-4 under the  Securities  Act of 1933, as amended (the  "Securities  Act"),  in
connection  with the issuance of the PCN Stock  pursuant to this  Agreement,  as
amended or supplemented  (such registration  statement,  as it may be amended or
supplemented  from time to time, the "S-4");  and (C) such reports under Section
13(a) of the Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),
and such other  compliance  with the  Securities  Act,  the Exchange Act and the
rules and  regulations  thereunder  as may be required in  connection  with this
Agreement and the transactions  contemplated  hereby, and the obtaining from the
SEC of such orders as may be so required;  (ii) the filing of the Certificate of
Merger  with the  Secretary  of State of the  State of  Washington;  (iii)  such
filings and  approvals as may be required by  applicable  "blue sky" or takeover
laws; and (iv) filing with the NASDAQ Stock Market for the listing of the shares
of PCN Stock issuable upon exchange of the Common Stock (and after the Effective
Time,  the shares of PCN Stock issuable upon the exercise of Options (as defined
in Section 5.7)).

     Section 2.3 Issuance of PCN Stock.  All shares of PCN Stock which are to be
issued  pursuant to the Merger will be, when issued in accordance with the terms
thereof,  validly  issued,  fully  paid and  non-assessable  and not  subject to
preemptive rights.

     Section  2.4 SEC  Documents;  Financial  Statements.  (a) PCN has filed all
forms,  reports and  documents  required to be filed by PCN with the SEC and has
heretofore  delivered to the Company, in the form filed with the SEC, its Annual
Report  on Form 10-K for the  fiscal  year  ended  December  31,  1995 (the "PCN
10-K"),  its Quarterly  Report on Form 10-Q for the period ending March 31, 1996
(the "PCN 10-Q") and any  Current  Reports on Form 8-K filed by PCN with the SEC
since March 31, 1996 (the "PCN 8-K" and,  together with the PCN 10-K and the PCN
10-Q, the "PCN SEC Documents").  As of their  respective  dates: (i) the PCN SEC
Documents  complied  in all  material  respects  with  the  requirements  of the
Securities  Act or the Exchange  Act, and the rules and  regulations  of the SEC
thereunder  applicable to such PCN SEC  Documents;  and (ii) none of the PCN SEC
Documents  contained any untrue statement of a material fact or omitted to state
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements  therein,  in light of the circumstances  under which they were made,
not misleading.

     (b) The  financial  statements  of PCN  included  in the PCN SEC  Documents
complied  as to form in all  material  respects  with the  published  rules  and
regulations of the SEC with respect  thereto,  were prepared in accordance  with
generally accepted accounting  principles ("GAAP") applied on a consistent basis
during the periods involved (except as may be indicated in the notes thereto or,
in the  case  of the  unaudited  statements,  as  permitted  by  Rule  10-01  of
Regulation  S-X of the SEC) and fairly  present in  accordance  with  applicable
requirements  of GAAP  (subject,  in the case of the  unaudited  statements,  to
normal,  recurring audit adjustments) the consolidated financial position of PCN
and  its  consolidated  Subsidiaries  as  at  their  respective  dates  and  the
consolidated  results of operations and the  consolidated  cash flows of PCN for
the periods then ended.

     Section 2.5 Absence of Certain  Changes or Events.  Since March 31, 1996 to
the date hereof  (except as  disclosed  in the PCN SEC  Documents),  PCN and its
Subsidiaries  have conducted their businesses only in the ordinary course and in
a manner  consistent with past practice and, since such date to the date hereof,
(except as disclosed in the PCN SEC Documents)  there has not been any change in
the  business,   results  of  operations,   properties   (including   intangible
properties),  financial  condition,  assets or  liabilities of PCN or any of its
Subsidiaries having a Material Adverse Effect.

     Section 2.6 Finders and Investment Bankers. No broker, finder or investment
banker is entitled to any  brokerage,  finder's  or other fee or  commission  in
connection  with the  Merger or any  other  transaction  contemplated  hereby on
account of any actions taken by PCN or Merger Sub.

     Section 2.7 Information Supplied. None of the information supplied or to be
supplied by PCN for  inclusion or  incorporation  by  reference  in: (i) the S-4
will,  at the  time the S-4 is  filed  with  the SEC and at the time it  becomes
effective under the Securities Act or at the Effective Time,  contain any untrue
statement of a material  fact or omit to state any material  fact required to be
stated therein or necessary to make the statements  therein not misleading;  and
(ii) the Proxy Statement will, at the date mailed to stockholders of the Company
and at the times of any meetings of  stockholders  to be held in connection with
the Merger, contain any untrue statement of a material fact or omit to state any
material  fact  required to be stated  therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading.  The Proxy Statement,  insofar as it relates to PCN or 


                                       A-6
<PAGE>


Merger Sub or other  information  supplied by PCN for  inclusion  therein,  will
comply as to form in all material  respects with the  provisions of the Exchange
Act and the rules and regulations thereunder, and the S-4, insofar as it relates
to PCN or Merger Sub or other information supplied by PCN for inclusion therein,
will  comply as to form in all  material  respects  with the  provisions  of the
Securities Act and the rules and regulations thereunder.

     Section 2.8 Disclosure.  No representation or warranty by PCN or Merger Sub
in this  Agreement  and no statement  contained in any document or other writing
furnished  or to be  furnished  to the  Company  or  any of its  representatives
pursuant to the provisions  hereof contains or will contain any untrue statement
of material fact or omits or will omit to state any material  fact  necessary in
order to make the statements made herein or therein not  misleading.  All copies
of all documents delivered to the Company or any of its representatives pursuant
hereto are true, complete and accurate in all material respects.  There has been
no event or transaction  which has occurred or information which has come to the
attention  of PCN  (other  than  events  or  information  relating  to  economic
conditions of general public  knowledge)  which could  reasonably be expected to
have a Material Adverse Effect.


                                   ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The  Company  hereby  represents  and  warrants to PCN and to Merger Sub as
follows:

     Section 3.1  Organization,  Standing and Power. Each of the Company and its
Subsidiaries:  (i) is a corporation duly organized, validly existing and in good
standing  under  the laws of its  jurisdiction  of  incorporation;  (ii) has all
requisite  corporate power and corporate authority to own, lease and operate its
properties  and to carry on its  business as now being  conducted;  and (iii) is
duly  qualified  or  licensed  to do  business  and in  good  standing  in  each
jurisdiction in which the business it is conducting, or the operation, ownership
or leasing of its properties,  makes such qualification or licensing  necessary,
other than in such  jurisdictions  where the failure so to be in good  standing,
qualified  or  licensed  does  not,  individually  or in the  aggregate,  have a
Material  Adverse  Effect.  Set  forth  in  the  Company's  disclosure  schedule
previously delivered to PCN (the "Disclosure Schedule"),  is a true and complete
list of all  Subsidiaries of the Company and their  respective  jurisdictions of
incorporation or organization and the  jurisdictions in which the Company or any
of its  Subsidiaries  are qualified or licensed to do business.  The Company has
previously  made  available to PCN complete and correct  copies of the presently
effective  Articles  of  Incorporation  and  By-Laws  of  the  Company  and  its
Subsidiaries.

     Section 3.2 Capital  Structure.  (a) The  authorized  capital  stock of the
Company consists of 20,000,000 shares of Common Stock.

     (b) As of the date hereof  16,325,461 shares of Common Stock are issued and
outstanding,  all of which are validly issued, fully paid and non-assessable and
not subject to  preemptive  rights.  As of the date  hereof,  528,333  shares of
Common Stock are reserved for issuance pursuant to options outstanding as of the
date hereof (whether or not vested).

     (c) All  outstanding  shares of capital  stock of the  Subsidiaries  of the
Company are owned directly by the Company, free and clear of all liens, charges,
encumbrances,  claims and options of any nature  (collectively,  "Liens")  other
than  the  Liens  referred  to in the  Disclosure  Schedule.  Set  forth  in the
Disclosure  Schedule is a true and  complete  schedule of all options  which are
outstanding  as of the date  hereof,  the  number of shares of Common  Stock for
which such options are exercisable,  the exercise price of the option, the dates
on which such  options  become  exercisable  and the identity and the last known
address of the optionee.  Except as set forth in this Section 3.2, there are not
outstanding  any: (i) shares of capital stock or other voting  securities of the
Company;  (ii) securities of the Company or any of its Subsidiaries  convertible
into or exchangeable  for shares of capital stock or other voting  securities of
the Company or any of its Subsidiaries;  (iii) options,  warrants, calls, rights
(including  preemptive  rights),  commitments,  agreements or  understandings to
which the Company or any of its  Subsidiaries is a party or by which it is bound
obligating  the  Company or any of its  Subsidiaries  to issue,  deliver,  sell,
purchase, redeem or acquire or cause to be issued,  delivered,  sold, purchased,
redeemed  or  acquired,  additional  shares  of  capital  stock or other  voting
securities of the Company or any of its  Subsidiaries  or obligating the Company
or any of its  Subsidiaries  to  grant,  extend or enter  into any such  option,
warrant,  call, right,  commitment,  agreement or  understanding;  or (iv) stock
appreciation  or other  similar or related  right which is  measured  by, and no
person has or has the right or interest to acquire any equity  interests  in the
Company or any of its  Subsidiaries  or any interests  measured by, the value of
the capital stock or the income,  profits or other results of the  operations or
conduct of the business of 


                                   A-7
<PAGE>


the Company or any of its  Subsidiaries.  There are no  shareholder  agreements,
voting trusts or other  agreements or  understandings  to which the Company is a
party or by which  it is bound  relating  to the  voting  of any  shares  of the
capital stock of the Company.

     Section 3.3 Authority  Relative to This Agreement.  (a) The Company has all
necessary  corporate  power and corporate  authority to execute and deliver this
Agreement and each Company  Document (as  hereinafter  defined) and,  subject to
adoption of this Agreement by the affirmative  vote of the holders of two thirds
of the outstanding shares of Common Stock entitled to vote thereon (the "Company
Vote"), to consummate the transactions  contemplated  hereby.  The execution and
delivery  of this  Agreement  and each  Company  Document by the Company and the
consummation by the Company of the transactions  contemplated hereby and thereby
have been duly authorized by all necessary  corporate  action on the part of the
Company  subject  to  adoption  of this  Agreement  by the  Company  Vote.  This
Agreement has been and each Company Document will be duly executed and delivered
by the Company and,  subject to adoption of this  Agreement by the Company Vote,
and assuming this Agreement  constitutes the valid and binding  agreement of PCN
and Merger  Sub,  constitutes  the legal,  valid and binding  obligation  of the
Company  enforceable  against the Company in accordance  with its terms. As used
herein,  "Company Document" means each or any instrument  executed and delivered
by the Company in connection with the transactions contemplated hereby.

     (b) The execution  and delivery of this  Agreement by the Company does not,
and the consummation of the transactions contemplated hereby by the Company will
not: (i) conflict  with,  or result in any  violation or breach of any provision
of, the  Articles  of  Incorporation  or  By-Laws  of the  Company or any of its
Subsidiaries; or (ii) except as to which requisite waivers or consents have been
obtained and assuming the  consents,  approvals,  authorizations  or permits and
filings  or  notifications  referred  to in  Section  3.2(c) are duly and timely
obtained or made and the approval of this Agreement by the Company Vote has been
obtained,  result  in any  Violation  of any  loan or  credit  agreement,  note,
mortgage,  indenture,  real property lease,  Benefit Plan (as defined in Section
3.15) or other Material Contract (as defined in Section 3.19), judgment,  order,
decree, or, to the Company's  knowledge,  any statute,  law, ordinance,  rule or
regulation  applicable  to the  Company  or any of  its  Subsidiaries  or  their
respective properties or assets.

     (c) No  consent,  approval,  order or  authorization  of, or  registration,
declaration or filing with, or permit from any  Governmental  Entity is required
by or with respect to the Company or any of its  Subsidiaries to validly execute
and deliver this  Agreement or to effect the Merger,  except for: (i) the filing
with the SEC of (A) the Proxy  Statement;  and (B) such  reports  under  Section
13(a) of the Exchange Act, and such other  compliance  with the Securities  Act,
the Exchange Act and the rules and regulations  thereunder as may be required in
connection with this Agreement and the transactions  contemplated  hereby;  (ii)
the filing of the Certificate of Merger with the Secretary of State of the State
of Washington; (iii) such filings and approvals as may be required by applicable
"blue sky" or takeover laws;  and (iv) such other  required  consents as are set
forth on the Disclosure Schedule.

     Section  3.4  SEC  Documents;  Financial  Statements.  (a)  The  Disclosure
Schedule  sets  forth  a true  and  complete  list  of  each  report,  schedule,
registration  statement and definitive proxy statement filed by the Company with
the SEC since June 30, 1993 (the "Company SEC  Documents"),  including,  without
limitation, the Company's Annual Report on Form 10-KSB for the fiscal year ended
June 30, 1995 (the "Company 10-KSB") and the Company's  quarterly report on Form
10-QSB for the quarter ended March 31, 1996 (the "Company 10-QSB").  As of their
respective  dates:  (i) the  Company  SEC  Documents  complied  in all  material
respects with the requirements of the Securities Act or the Exchange Act, as the
case may be, and the rules and  regulations of the SEC thereunder  applicable to
such Company SEC Documents and (ii) none of the Company SEC Documents  contained
any  untrue  statement  of a material  fact or omitted to state a material  fact
required to be stated  therein or necessary to make the statements  therein,  in
light of the circumstances under which they were made, not misleading.

     (b) The  financial  statements  of the Company  included in the Company SEC
Documents  complied as to form in all material respects with the published rules
and  regulations  of the SEC with respect  thereto,  were prepared in accordance
with GAAP applied on a consistent  basis during the periods  involved (except as
may  be  indicated  in the  notes  thereto  or,  in the  case  of the  unaudited
statements,  as permitted by Rule 10-01 of Regulation S-X of the SEC) and fairly
present in accordance with applicable requirements of GAAP (subject, in the case
of the  unaudited  statements,  to  normal,  recurring  audit  adjustments)  the
consolidated financial position of the Company and its consolidated Subsidiaries
as at their respective dates and the consolidated  results of operations and the
consolidated cash flows of the Company for the periods then ended.


                                   A-8
<PAGE>


     (c) The Company has  delivered  to PCN correct and  complete  copies of the
audited  consolidated  balance  sheets  of  the  Company  and  its  consolidated
Subsidiaries  as at  March  31,  1996,  and  the  audited  related  consolidated
statements of operations, cash flows and changes in shareholders' equity for the
nine-month  period  then  ended and the notes  thereto,  together  with a report
thereon by BDO  Seidman & Company  (the  "Audited  Financial  Statements").  The
Audited Financial  Statements:  (i) are in accordance with the books and records
of the Company and its Subsidiaries;  (ii) have been prepared in accordance with
GAAP applied on a consistent basis during the periods involved (except as may be
indicated in the notes  thereto);  and (iii) fairly  present in accordance  with
applicable  requirements of GAAP the consolidated  balance sheets of the Company
and  its  consolidated  Subsidiaries  as  at  their  respective  dates  and  the
consolidated  statements of operations,  cash flows and changes in shareholders'
equity for the period  then  ended.  The  reserves  provided  for on the Audited
Financial  Statements with respect to contingent  liabilities of the Company are
adequate to cover all costs,  expenses,  liabilities and damages associated with
such contingent liabilities.

     Section  3.5 No  Undisclosed  Material  Liabilities.  Since June 30,  1995,
neither  the Company  nor any of its  Subsidiaries  has  incurred  any  material
obligations or liabilities of any kind whatsoever,  whether accrued, contingent,
absolute,  determined,  determinable  or otherwise,  other than: (i) liabilities
provided for in the Company SEC Documents  (or  disclosed in the notes  thereto)
filed by the Company with the SEC since June 30, 1995; (ii) liabilities incurred
in the ordinary course of business  consistent with past practice since June 30,
1995,  none of which  were  entered  into for  inadequate  consideration;  (iii)
liabilities under this Agreement;  (iv) liabilities  disclosed in the Disclosure
Schedule; and (v) liabilities disclosed in the Audited Financial Statements.

     Section  3.6 Absence of Certain  Changes or Events.  Except as set forth in
the Disclosure Schedule,  any Company SEC Document filed by the Company with the
SEC since June 30, 1995 or the Audited Financial Statements, the Company and its
Subsidiaries  have conducted their businesses only in the ordinary course and in
a manner consistent with past practice and, since such date, neither the Company
nor any of its  Subsidiaries  has:  (i)  suffered  any  change in the  business,
results  of  operations,   properties  (including  any  intangible  properties),
financial  condition,  assets  or  liabilities  of  the  Company  or  any of its
Subsidiaries  which,  individually or in the aggregate,  has a Material  Adverse
Effect; (ii) incurred damage to or destruction of any of the Company's assets by
casualty, whether or not covered by insurance, in an amount in excess of $20,000
or  suffered  or became  subject to any pending or  threatened  condemnation  of
property;  (iii) made any change in the nature of its business;  (iv) mortgaged,
pledged,  assigned,   hypothecated  or  subjected  to  any  lien  or  any  other
encumbrance  any of the  assets;  (v) sold,  transferred  or  leased  any of its
assets,  except, in each case, in the ordinary course of business and consistent
with past  practice;  (vi) sold,  assigned,  transferred,  or granted any rights
under or with respect to, any of its licenses, agreements,  patents, inventions,
trademarks,  trade names,  copyrights or formulae or with respect to know-how or
any other  intangible  asset, in each case, other than in the ordinary course of
business  consistent with past practice;  (vii) amended or terminated any of its
Material Contracts other than in the ordinary course of business consistent with
past  practice;  (viii)  waived or released any other  rights  having a value in
excess of $20,000 in the aggregate;  (ix) incurred or entered into any agreement
to  incur  indebtedness  for  borrowed  money or  guaranteed  any  liability  or
obligation  of any other  person for  borrowed  money;  (x)  suffered  any labor
dispute;  (xi) made or granted any increase in wage or salary to any employee or
granted any severance or  termination  pay to any officer,  director or employee
(other than in the ordinary course of business  consistent with past practice or
contractual  obligations)  or entered  into any  employment  agreement  with any
officer or employee;  (xii) made any increase in or  commitment  to increase any
employment  benefit or adopted or made any  commitments  to adopt any additional
employee  benefit  plan;  (xiii) made any change in any method of  accounting or
accounting  practice employed by the Company or any of its  Subsidiaries;  (xiv)
written down the value of inventory or written off notes or accounts  receivable
other than in the ordinary course of business;  (xv) declared, set aside or paid
any dividends or  distributions in respect of the shares of its capital stock or
any issuance,  sale,  transfer by the Company,  or commitment to issue,  sell or
transfer any shares of its capital  stock or any  redemption,  purchase or other
acquisition  of any of its  securities;  or (xvi)  received  notice of a default
under any Material Contract (as defined in Section 3.19).

     Section  3.7  Real  Estate.   (a)  Neither  the  Company  nor  any  of  its
Subsidiaries  have any interest in real property  other than as disclosed in the
Disclosure  Schedule  or as a lessee  of the  property  demised  under  the Real
Property Leases (as hereinafter defined).  All real property which is now or was
previously owned by the Company or any of its current or former  Subsidiaries is
listed  in the  Disclosure  Schedule  (all such real  property  currently  owned
referred to herein as the "Owned  Property" and all such real property  formerly
owned or leased referred to as the "Former Property").


                                   A-9
<PAGE>


     (b) The leasehold estates listed in the Disclosure  Schedule are all of the
leasehold  estates  under  which the  Company  or any of its  Subsidiaries  is a
lessee,  sublessee  or  sublessor  of any  real  property  or  interest  therein
(collectively,  the "Real Property Leases") (the premises demised under the Real
Property Leases, together with the Owned Property,  are, collectively,  referred
to herein as the "Real  Property").  No  proceeding  is pending  or, to the best
knowledge of the Company,  threatened,  for the taking or condemnation of all or
any  portion  of the  Real  Property.  Except  as  disclosed  in the  Disclosure
Schedule,  the Company or its Subsidiary,  as the case may be, holds valid title
to the Owned Property,  leasehold  estates and the Real Property Leases free and
clear of any  encroachment,  sublease,  right of  occupancy  or use of any third
party, mortgage,  pledge, lien, security interest,  encumbrance,  claim, charge,
covenant,  conditional  limitation or other restriction of any kind, except for:
(i)  real  property  taxes,  if  any,  affecting  the  Owned  Properties  or the
properties of which the premises  demised under the Real Property  Leases form a
part,  not yet due and payable or for which  adequate  provision  has been made;
(ii) landlord's  liens,  encumbrances,  and other  restrictions set forth in the
Real Property  Leases or related  documents or imposed by applicable  law; (iii)
easements, right-of-way, restrictions, minor defects or irregularities in title,
and other  encumbrances  not  interfering  in any material  respect with (x) the
ordinary  conduct of the business of the Company or its  Subsidiary  and (y) the
marketability  of the Owned  Properties.  Except as set forth in the  Disclosure
Schedule,  there is no brokerage commission or finder's fee due from the Company
or any of its  Subsidiaries  and unpaid with regard to any of Owned  Property or
the Real Property  Leases,  or which will become due any time in the future with
regard to any Owned Property or Real Property Lease.

     (c) Except as set forth in the Disclosure Schedule, to the knowledge of the
Company, there are no: (i) unrecorded agreements;  (ii) rights of occupancy;  or
(iii) mortgages,  pledges,  liens,  security  interests,  encumbrances,  claims,
charges  which  materially  encumber  any of the  Owned  Property  or any of the
properties demised under any of the Real Property Leases.

     (d) Except as set forth in the Disclosure Schedule, there are no easements,
rights of way or licenses  necessary for the operations of the Owned Property or
the  properties  demised  under the Real  Property  Leases which are not in full
force and effect.

     (e) Except as set forth in the Disclosure Schedule,  the Owned Property and
the building systems such as heating,  plumbing,  ventilation,  air conditioning
and electric  used in the  operation  of the Owned  Property are adequate in all
material  respects  for the current  operations  of the  Company,  and the Owned
Property and such building systems now being used by the Company in its business
and  operations,  whether  leased or owned,  are in  working  order,  repair and
operating  condition (normal wear and tear excepted),  and are, to the knowledge
of the Company, without any material structural defects.

     (f)  Neither  the  Company  nor any of its  Subsidiaries  is in material or
monetary default or has received any notice of any material or monetary default,
or  failed to take any  action  that  could  result in a  material  or  monetary
default,  under any Real Property  Lease. To the Company's  knowledge,  no other
party to any such lease is in material or monetary default thereunder.

     Section  3.8 Title to  Property;  Encumbrances.  Except as set forth in the
Disclosure  Schedule  and as set  forth  in  Section  3.9  with  respect  to the
Intellectual  Property  (as  defined in Section  3.9),  the Company has good and
valid title to, and owns outright,  all of the tangible and intangible  personal
properties  shown as owned by the Company and its  Subsidiaries on the Company's
books and records,  including,  without  limitation,  all of the  properties and
assets  reflected on the Audited  Financial  Statements  and all  properties and
assets  purchased  by and  delivered  to it since  March 31,  1996  (except  for
properties  and assets sold or disposed of since March 31, 1996, in the ordinary
course of business) free and clear of all  mortgages,  claims,  liens,  charges,
leases,  subleases,  encumbrances,  security  interests,  restrictions on use or
transfer or other defects of any kind or nature, whether or not recorded, except
for (collectively, "Permitted Liens" and, together with the Liens referred to in
the Disclosure Schedule, the "Existing Liens"): (i) liens for taxes, assessments
or other  governmental  charges or levies the payment of which is not due;  (ii)
landlord's liens in favor of the landlord of the premises demised under the Real
Property Leases and liens of carriers, warehousemen, mechanics, materialmen, and
other liens  imposed by law incurred in the  ordinary  course of business of the
Company for amounts not yet due or being  contested in good faith by appropriate
proceedings; and (iii) liens incurred or deposits made in the ordinary course of
business of the Company in connection with workers'  compensation,  unemployment
insurance and other types of social security.  The tangible personal  properties
and assets owned or leased by the Company are adequate  and  sufficient  for the
current operations of the business of the Company and its Subsidiaries.


                                   A-10
<PAGE>



     Section 3.9 Intellectual  Property.  The Company and its Subsidiaries  own,
license  or  have  the  right  to  use  all  franchises,   patents,  trademarks,
copyrights, service marks, tradenames,  corporate names, licenses, trade secrets
and  know-how  and  proprietary  computer  software  or  hardware,   proprietary
technology,  technical information,  discoveries,  designs and other proprietary
rights, whether or not patentable (collectively,  "Intellectual Property") which
are currently used in, their respective  businesses.  Except as disclosed in the
Disclosure Schedule,  the Company holds all Intellectual Property free and clear
of all mortgages,  claims,  liens,  charges,  leases,  subleases,  encumbrances,
security interests, restrictions on use or transfer or other defects of any kind
or nature,  whether or not recorded,  except for Permitted Liens. The Disclosure
Schedule  sets forth a true,  correct and complete list and  description  of all
such  Intellectual  Property  (other than licenses for standard  "off-the-shelf"
software  which can be readily  acquired  or  licensed  for $10,000 or less) and
indicates whether the Company or its Subsidiaries,  as applicable, is a licensor
or licensee thereof.  Except for: (i) the Company's  software licensed to others
in the ordinary  course of the Company's  business;  or (ii) as set forth in the
Disclosure Schedule, the Company has sole title to and ownership of or has full,
exclusive right to use, for the life of the proprietary  right, all Intellectual
Property.  Except  where the  failure  to do so would  have a  Material  Adverse
Effect, all filings and other actions necessary to acquire, maintain,  register,
renew and perfect the rights of the Company and its Subsidiaries to its or their
Intellectual Property rights have been duly made in all jurisdictions where such
rights  are  used by it or them.  The use of the  Intellectual  Property  by the
Company or its Subsidiaries in the operation of their respective businesses does
not violate or infringe on the rights of any other  person.  Neither the Company
nor any of its Subsidiaries has received any notice of or alleging any violation
of the asserted rights of others with respect to the Intellectual  Property. The
Company is not aware of any third party that is  infringing  or violating any of
the  rights  of the  Company  or any of its  Subsidiaries  with  respect  to the
Intellectual Property.

     Section 3.10  Litigation.  Except as set forth in the Disclosure  Schedule,
there are no actions,  proceedings,  claims or investigations pending or, to the
Company's knowledge,  threatened against the Company or any of its Subsidiaries,
or any  properties or rights of the Company or any of its  Subsidiaries,  before
any  court,  administrative,  governmental  or  regulatory  authority  or  body,
domestic or foreign.  To the  Company's  knowledge,  except as  disclosed in the
Disclosure  Schedule,  no  basis  exists  for the  commencement  of any  action,
proceeding or  investigation of the Company or its  Subsidiaries.  Except as set
forth in the Disclosure Schedule, as of the date hereof, neither the Company nor
any of its  Subsidiaries  nor any of their  property  is  subject  to any order,
judgment, writs, injunction or decree.

     Section 3.11  Compliance  with Laws.  Except as set forth in the Disclosure
Schedule  or with  respect to  Environmental  Laws (as  defined in Section  3.12
hereto),  the Company and its  Subsidiaries  have complied and are in compliance
with all applicable laws, rules, regulations,  ordinances, orders, judgments and
decrees (including, without limitation, occupational safety and health, pension,
fair  employment,  equal  opportunity or similar laws, rules and regulations) of
any  Governmental  Entity  and all other  regulatory  bodies  which  affect  its
business  or assets,  the  failure to comply  with which has or would  result in
liability  to the Company or the  Surviving  Corporation  of $5,000 or more with
respect to each such failure (a "Compliance Failure"),  and there are no pending
claims which have been filed against the Company, its Subsidiaries or any of its
affiliates  alleging a violation of any such law, rule,  regulation,  ordinance,
order,  judgment and decree.  All Compliance  Failures,  whether or not any such
occurrence,  individually,  results in liability to the Company or the Surviving
Corporation of $5,000 or less, collectively, will not result in liability to the
Company and the  Surviving  Corporation  for an amount of $30,000 or more in the
aggregate.

     Section 3.12  Environmental  Laws. (a) The Company and its Subsidiaries are
in compliance with all applicable  Environmental  Laws (as defined below in this
Section 3.12), and have obtained all necessary  licenses and permits required to
be issued  pursuant to any  Environmental  Law,  except  where the failure to so
comply or to obtain such licenses or permits,  individually or in the aggregate,
does not have a Material  Adverse Effect.  Except as disclosed in the Disclosure
Schedule, neither the Company nor any of its Subsidiaries has received notice of
or communication from any Governmental Entity with respect to: (i) any Hazardous
Substance (as defined below in this Section 3.12) in relation to its operations,
property, Owned Properties,  Former Properties (or any of them) or acts; or (ii)
any investigation, demand or request pursuant to enforcing any Environmental Law
relating  to it or  its  operations  or  the  Owned  Properties  or  the  Former
Properties  (or  any  of  them),  and,  to  the  Company's  knowledge,  no  such
investigation  is pending or  threatened.  For purposes of this  Agreement:  (i)
"Environmental  Law" means any  present or future  federal,  state or local law,
statute,  regulation or ordinance,  binding interpretation,  binding policy, and
any judicial or administrative  order or judgment thereunder and the common law,
pertaining  to  health,   industrial  hygiene,   Hazardous   Substances  or  the
environment, including, but not limited to, each of the following, 


                                   A-11
<PAGE>


as enacted as of the date  hereof or as  hereafter  amended:  the  Comprehensive
Environmental  Response,  Compensation  and  Liability  Act of 1980,  42  U.S.C.
ss.ss.9601-9657;  the Resource  Conservation and Recovery Act of 1976, 42 U.S.C.
ss.ss.6901-6991; the Toxic Substance Control Act, 15 U.S.C. ss.ss.2601-2629; the
Water  Pollution  Control Act (also  known as the Clean  Water  Act),  33 U.S.C.
ss.1251 et seq; the Clean Air Act, 42 U.S.C.  ss.7401 et seq; the Federal  Water
Pollution  Control Act, 42 U.S.C.  ss.1251,  et seq;  the Federal Safe  Drinking
Water Act, 42 U.S.C. ss.300(f), et seq; the Federal Solid Waste Disposal Act, 42
U.S.C.  ss.6901,  et seq; the Atomic Energy Act, 42 U.S.C.  ss.2011, et seq; and
the Hazardous Materials  Transportation Act, 49 U.S.C.  ss.1801 et seq; and (ii)
"Hazardous Substances" means any material,  waste or substance which is included
within the definition of "hazardous  substances,"  "hazardous materials," "toxic
substances,"  or "solid  waste" in or  pursuant  to any  Environmental  Law,  or
subject to regulation under any Environmental Law.

     (b) There are presently no underground  storage tanks  ("USTS")  located on
any of the Real Property  nor, to the  knowledge of the Company,  were there any
USTS located on the Former Property,  nor were any such USTS removed at any time
from the Real Property or Former  Property  unless such removal was completed in
accordance with  Environmental  Law and the  requirements  of each  Governmental
Agency having  jurisdiction  over such removal.  None of the properties  contain
asbestos or Urea Formaldehyde (or Urea Formaldehyde insulation).

     (c) The  Company  is not now under any duty to  self-report  any  condition
existing on any of the Real Property or Former Property which constitutes or may
constitute a violation of any Environmental Law to any Governmental Agency.

     (d) None of the Real  Property or Former  Property are or were used for the
manufacture or storage of Hazardous Substances.

     (e) All transportation or disposition, if any, of Hazardous Substances from
the Real  Property  or  Former  Property,  were  performed  in  compliance  with
applicable Environmental Laws.

     (f) The Company has no knowledge of any pending or threatened claim against
the Company  arising  out of the  transportation  or  disposition  of  Hazardous
Substances.

     Section 3.13 Permits. The Disclosure Schedule sets forth a true and correct
list and description of each material consent, permit, approval,  authorization,
license  and  order of or from a  Governmental  Entity  that is held or has been
received by the Company or any of its Subsidiaries  (collectively,  the "Company
Permits").  The  Company  Permits  constitute  all  of  the  consents,  permits,
approvals,  authorizations,  licenses and orders necessary for the operations of
the Company and its  Subsidiaries and their  respective  businesses,  except for
those which, if not obtained, would not, individually or in the aggregate,  have
a Material  Adverse  Effect.  Each Company Permit is valid and in full force and
effect as of the date hereof. There has not been any attempt to revoke or in any
way limit or impair any of such Company Permits nor, to the Company's knowledge,
is there any reason for any such Company  Permit not to be renewed.  The Company
and each of its  Subsidiaries  is in  material  compliance  with,  and is not in
violation of or in breach or default  under,  and has not received any notice of
any alleged  violation of or material  breach or default  under the terms of any
Company Permit held or received by it.

     Section 3.14 Tax Matters.  Except as disclosed in the Disclosure  Schedule:
(a) The Company is the common parent of an affiliated group of corporations (the
"Consolidated  Group") which includes the Company and its domestic  Subsidiaries
and files  consolidated  Federal income tax returns.  Except as set forth in the
Disclosure  Schedule,  all United States Federal,  state,  local and foreign tax
returns,  including information returns,  reports and forms ("Tax Returns") that
were  required  to be  filed  by,  or  with  respect  to,  the  Company  and its
Subsidiaries  on or before the date hereof have been filed on a timely  basis in
accordance  with the laws,  regulations and  administrative  requirements of the
appropriate Governmental Entity. All such Tax Returns that have been filed were,
when filed,  and  continue to be,  true,  correct and  complete in all  material
respects.

     (b) The Company  recognized  no income or gain on the  cancellation  of the
Company's 7% convertible subordinated debentures due 1998 by the holders of such
convertible  subordinated  debentures in exchange for the Company's Common Stock
offered through the Company's August 15, 1995 public offering.

     (c) The Disclosure Schedule lists all Tax Returns by or with respect to the
Company and its  Subsidiaries  that are in the  process of being  audited by any
Governmental  Entity.  The Disclosure  Schedule describes all adjustments to Tax
Returns  filed by, or on behalf of, the Company and its  Subsidiaries  that have
been  proposed  by  any  representative  of any  Governmental  Entity,  and  the
resulting Taxes (as defined  below),  if any,  proposed to be 


                                   A-12
<PAGE>


assessed.  As used herein, the term "Taxes" means all foreign,  Federal,  state,
county,  local and other taxes,  levies,  impositions,  deductions,  charges and
withholdings,  including, without limitation, income or franchise taxes or other
taxes  imposed  on or with  respect to net income or  capital,  gross  receipts,
profits, sales, use, occupation, value added, ad valorem, transfer, withholding,
payroll,  employment  excise or property taxes,  and shall include any interest,
penalties  or additions  thereto.  All  deficiencies  proposed  (plus  interest,
penalties and additions to Tax that were or are proposed to be assessed thereon,
if any) with  respect to the  Company  and its  Subsidiaries  as a result of any
examinations  have been paid or, as described in the  Disclosure  Schedule,  are
being contested in good faith by appropriate proceedings. Except as set forth in
the Disclosure  Schedule,  there are no outstanding waivers or extensions of any
statute of limitations relating to the payment of Taxes for which the Company or
its Subsidiaries may be liable and no Governmental Entity has either formally or
informally requested such a waiver or extension.

     (d) All Taxes  (whether or not shown on any return)  which were required to
be paid by the  Company and its  Subsidiaries  on or before the date hereof have
been timely paid,  except such Taxes, if any, as are set forth in the Disclosure
Schedule,  that are being contested in good faith. All Taxes that the Company or
its  Subsidiaries  were  required by law to  withhold or collect  have been duly
withheld  or  collected  and,  to the  extent  required,  have  been paid to the
appropriate  Governmental  Entity. There are no liens with respect to Taxes upon
any of the properties or assets,  real or personal,  tangible or intangible,  of
the Company or its  Subsidiaries  (except for Taxes not yet due).  Any liability
existing  on March 31, 1996 of the Company for Taxes not yet due and payable has
adequately been provided for on the Audited Financial Statements.

     (e) The Company has paid all consolidated  Federal income Taxes (whether or
not shown on any  return)  which were  required  to be paid by the  Consolidated
Group,  except such Taxes, if any, as are set forth in the Disclosure  Schedule,
that are being contested in good faith.

     (f) Except for (i) consolidated Federal income Tax Returns filed by Company
with respect to the Consolidated  Group, (ii) and as set forth on the Disclosure
Schedule,  the  Company  and its  Subsidiaries  have  never been  included  in a
consolidated or combined income Tax Return.

     (g) No consent to the  application  of Section  341(f)(2)  of the  Internal
Revenue Code of 1986, as amended (the "Code") has been filed with respect to any
property or assets held or acquired by the Company or its Subsidiaries.

     (h) No property owned by the Company or its  Subsidiaries  is property that
the Company or its  Subsidiaries are required to treat as being owned by another
person pursuant to the provisions of Section  168(f)(8) of the Internal  Revenue
Code of 1954, as amended and in effect  immediately  before the enactment of the
Tax Reform Act of 1986, or is  "tax-exempt  use property"  within the meaning of
Section 168(h)(1) of the Code.

     (i) The  Company  and its  Subsidiaries:  (i)  have not  agreed  to or been
required to make any  adjustment  pursuant to Section  481(a) of the Code;  (ii)
have no  knowledge  that the  Internal  Revenue  Service has  proposed  any such
adjustment or change in accounting  method with respect to it; (iii) do not have
an application pending with any taxing authority  requesting  permission for any
change in accounting  method;  and (iv) have reported all income and  deductions
using a permissible method of accounting under Section 446 of the Code.

     (j) The Company is not foreign person within the meaning of Section 1445 of
 the Code.

     (k) Except as disclosed on the Disclosure Schedule, neither the Company nor
its Subsidiaries has in effect any tax elections for Federal income tax purposes
under Section 108, 168, 338, 441, 471, 1017, 1033 or 4977 of the Code.

     (l) There is no  contract,  agreement,  plan or  arrangement  covering  any
person that, individually or collectively, as a consequence of the Merger, could
give rise to the  payment of any  amount  that  would not be  deductible  by the
Company or its  Subsidiaries  by reason of Section 162(m) or 280G of the Code or
as excessive or unreasonable compensation.

     (m) The  Company  and its  Subsidiaries  are not a party  (other than as an
investor) to any industrial development bond.

     (n) Except as provided on the Disclosure Schedule,  during the previous two
years the Company and any person  related to the Company  (within the meaning of
Section  1031(f)(3))  have not  engaged  in any  exchange  under  which the gain
realized on such exchange was not recognized due to Section 1031 of the Code.



                                   A-13
<PAGE>


     (o) No written  claim has ever been made by an authority in a  jurisdiction
in which the Company or its Subsidiaries do not file Tax Returns that it or they
are or may be subject to taxation by that jurisdiction.

     (p) The Company and its  Subsidiaries  are not and have not been a party to
any tax sharing or similar agreement or arrangement.

     (q)  The  Company  and  its  Subsidiaries  have  not  been  a  party  to  a
transaction,  the income  with  respect  to which was  deferred  under  Treasury
Regulations  issued under  Section 1502 of the Code,  which income will be taken
into account by the Company as a result of the Merger.

     (r) The Disclosure  Schedule  hereto sets forth,  as of March 31, 1996, the
liabilities  of the Company and its  Subsidiaries  and the adjusted basis of the
assets of the Company and its Subsidiaries for Federal, state, local and foreign
income tax  purposes,  which has been  determined  by the  Company in good faith
based on the best data available to the Company.

     (s) The Company has  provided PCN with copies of: (i) all Tax Returns of or
with respect to the Company and its Subsidiaries for all periods with respect to
which the  statute  of  limitations  on  assessment  has not  expired;  (ii) any
notices,  protests,  or  closing  agreements  relating  to  issues  arising,  or
potentially arising, in any audit, litigation or similar proceeding with respect
to the  liability  for  Taxes of the  Company  or its  Subsidiaries;  (iii)  any
elections or disclosure of any  controversial  position filed by or on behalf of
the Company or its Subsidiaries with any taxing authority  (whether or not filed
with any Tax  Return);  and (iv) any letter  rulings,  determination  letters or
similar  documents issued by any taxing authority with respect to the Company or
its Subsidiaries.

     (t) The net  operating  loss  carryovers  and any credit  carryovers of the
Company and each of its  Subsidiaries as of June 30, 1995 for Federal income tax
purposes and for state income tax purposes in each state in which the Company or
its Subsidiaries  file a state income tax return are set forth on the Disclosure
Schedule.  Except to the extent attributable to income generated in the ordinary
course of  business  subsequent  to June 30,  1995,  neither the Company nor its
Subsidiaries  has recognized  income or gain which has reduced the net operating
loss carryovers or the credit  carryovers set forth on the Disclosure  Schedule.
Except as  described  in the  Disclosure  Schedule,  neither the Company nor any
Subsidiary has a net operating loss carryover or a credit carryover which (i) in
the case of a net operating  loss  carryover,  is subject to  restriction  under
Section 382 of the Code (or any similar provision under state, local, or foreign
law), (ii) in the case of any credit carryover,  is subject to restriction under
Section 383 of the Code (or any similar provision under state,  local or foreign
law) or (iii) in the case of either a net  operating  loss or credit  carryover,
arose in a separate return limitation year.

     (u) Except as set forth on the Disclosure  Schedule,  no contributions have
been made to capital of the  Company  or its  Subsidiaries  during the five year
period ending on the date hereof.

     (v) Neither the Company or its  Subsidiaries  are liable for the payment of
any Taxes imposed on the Company or its Subsidiaries  under Treasury  Regulation
Section 1.1502-6 (or any successor  provision thereto or similar provision under
state, local or foreign law).

     Section 3.15 Benefit Plans. (a) The Disclosure Schedule contains a true and
complete list of each pension, retirement, savings, profit sharing, stock bonus,
stock ownership,  deferred compensation,  bonus, incentive  compensation,  stock
option,  restricted stock,  stock purchase,  stock  appreciation  right,  salary
continuation,   severance  or  termination  pay,  medical,   hospital,   dental,
cafeteria,   flexible  spending,   dependent  care,  life  or  other  insurance,
disability,  fringe  benefit,  vacation  pay, sick pay,  holiday,  unemployment,
employee loan, educational assistance or other employee benefit plan or program,
agreement or arrangement,  whether written or oral,  covering  current or former
employees,   directors  or  agents  of  the  Company  or  its  Subsidiaries  and
maintained,   sponsored  or  contributed  to  by  the  Company  or  any  of  its
Subsidiaries,  or with  respect to which the Company or any of its  Subsidiaries
may otherwise have any liability  (including,  but not limited to, any "employee
benefit  plans",  as defined in Section 3(3) of the Employee  Retirement  Income
Security Act of 1974,  as amended  ("ERISA"))  (all the  foregoing  being herein
called  "Benefit  Plans")).  With respect to the Benefit Plans,  the Company has
made  available  to PCN a true and  correct  copy of (i) the three  most  recent
annual  reports (Form 5500) filed with the IRS,  (ii) all such  Benefits  Plans,
(iii) any summary plan description relating to any Benefit Plan, (iv) each trust
agreement,  insurance  contract,  annuity  contract or other funding  vehicle or
investment  contract,  relating  to such  Benefit  Plans,  (v) the  most  recent
actuarial report or valuation,  (vi) the latest IRS determination letter and any
other IRS ruling  relating to a Benefit Plan and (vii) the premium  expenses and
claims  experience for each Benefit Plan which is a welfare benefit plan for the
three  most  recent  fiscal  years and for the  period  from the end of the most
recent fiscal year to the last day of the month 


                                   A-14
<PAGE>


preceding the date hereof.  Each of the Company and its  Subsidiaries  currently
has no commitment or plans to create any additional Benefit Plans.

     (b) Except as disclosed on the  Disclosure  Schedule,  each Benefit Plan is
and has been in  compliance,  in form and operation,  in all material  respects,
with all applicable laws and has been  administered in all material  respects in
accordance with its terms and ERISA, the Code or any other  applicable  statute,
order or governmental rule or regulation.

     (c) Each of the  Benefit  Plans and  related  trusts that is intended to be
qualified  under Section  401(a) and exempt from tax under Section 501(a) of the
Code has been  determined  by the IRS to be qualified and exempt under the Code,
and to the Company's knowledge, nothing has occurred since such determination to
cause any of such Benefit Plans and related  trusts not to qualify under Section
401(a) or be exempt under Section  501(a) of the Code except as disclosed on the
Disclosure Schedule.

     (d) Except as disclosed on the Disclosure  Schedule,  all required returns,
reports  and   descriptions   with  respect  to  the  Benefit  Plans  have  been
appropriately filed and distributed.

     (e) With respect to the Benefit Plans,  individually  and in the aggregate,
except as disclosed on the  Disclosure  Schedule,  there has been no  prohibited
transaction  within the meaning of Section  406 of ERISA or Section  4975 of the
Code,  or any  liability  for  taxes or breach of  fiduciary  duty.  There is no
action,  suit,  grievance,  arbitration  or  other  claim  with  respect  to the
administration  or investment of assets of the Benefit Plans (other than routine
claims for benefits made in the ordinary course of plan administration)  pending
or  threatened  and which are  likely  to give  rise to any such  action,  suit,
grievance, arbitration or other claim.

     (f) Neither the Company nor any of its  Subsidiaries  currently  maintains,
sponsors,  or  contributes  to (or is required to  contribute  to) any  "defined
benefit plan" as defined in Section 3(35) of ERISA, any "multiemployer  plan" as
defined in Section  3(37) of ERISA or any  "multiple  employer  plan" within the
meaning of Sections 4063 or 4064 of ERISA. With respect to any "employee benefit
plan"  (as  defined  in  Section  3(3) of  ERISA),  whether  or not  terminated,
currently  or  formerly  maintained  or  contributed  to by the  Company  or its
Subsidiaries,  or any entity which was at any time treated as a single employer,
determined  under Section 414(b),  (c), (m) or (o) of the Code, with the Company
or its Subsidiaries, no liability currently exists and no event has occurred and
no condition  exists,  which could subject the Company,  its  Subsidiaries,  the
Surviving Corporation or any of its Subsidiaries directly or indirectly (through
an indemnification agreement or otherwise) to any liability,  including, without
limitation,  any liability under Title IV of ERISA or Section 412, 4971, 4975 or
4980B of the Code.

     (g) With respect to the Benefit Plans,  individually  and in the aggregate,
there are no funded benefit obligations for which contributions are due and have
not been made or for  which  contributions  have not been  properly  accrued  as
required by GAAP, and there are no unfunded benefit  obligations  which have not
been (i)  accounted  for by reserves  (if  required by GAAP) or (ii) if required
(and to the extent  required,  if any),  properly  disclosed in accordance  with
GAAP, in the consolidated financial statements of the Company.

     (h) No Benefit Plan or other  contract or agreement to which the Company or
any of its  Subsidiaries  is a party  provides  life,  health  or other  welfare
benefits  to  retirees  or other  terminated  employees  of the  Company  or its
Subsidiaries or their dependents,  other than continuation  coverage mandated by
Section  4980B of the  Code or any  state  law  requiring  similar  continuation
coverage.

     (i) The financial  statements included in the Company SEC Documents and the
Audited  Financial  Statements  reflect reserves which are adequate to cover any
reasonably   expected   liabilities   for  unresolved  or  outstanding   workers
compensation claims or claims under the Company's  self-funded  employee welfare
plans.

     Section 3.16 Employees;  Labor Relations.  (a) None of the Company's or any
of its  Subsidiaries'  employees  is  represented  by any  labor  union.  To the
Company's knowledge, there is no activity involving any employees of the Company
or any of its  Subsidiaries  seeking to certify a collective  bargaining unit or
engaging in any other organizational  activity.  There are no pending or, to the
Company's knowledge, threatened, lawsuits,  administrative proceedings, reviews,
or  investigations  by any person or Governmental  Entity against the Company or
any of its  Subsidiaries  with respect to any violation or alleged  violation of
any  applicable  Federal,  state  or  local  laws,  rules  or  regulations:  (i)
prohibiting  discrimination on any basis, including,  without limitation, on the
basis of race, color, religion, sex, disability, national origin or age; or (ii)
relating to employment or labor, including, without limitation, those related to
immigration, wages or hours.



                                   A-15
<PAGE>


     (b) The Disclosure  Schedule  contains a true and correct  schedule of: (i)
the name, job title and current  annual base salary of all current  officers and
employees of the Company and its  Subsidiaries and the amount of any bonuses the
Company or its  Subsidiaries  have  promised to pay such  persons;  and (ii) all
written employment,  consulting,  severance or compensation agreements with each
such persons, true and correct copies of which have been previously delivered to
PCN.  Except for  employees  with  employment  agreements or as set forth on the
Disclosure  Schedule or as provided by the laws of the jurisdiction in which the
employee is  employed,  all  employees of the Company and its  subsidiaries  are
at-will  employees and the Company has taken no action which could result in any
such employees not being considered at-will employees.

     (c) Except as set forth on the  Disclosure  Schedule,  each employee of the
Company and its Subsidiaries is a party to a confidentiality  and non-disclosure
agreement  substantially in the form of the agreement attached to the Disclosure
Schedule (the "Employee Confidentiality Agreement").

     Section 3.17 Insurance. The Disclosure Schedule sets forth a true, complete
and accurate list and summary  description  of all material  insurance  policies
maintained  by the Company or any of its  Subsidiaries  which are  currently  in
effect or with  respect to which  there are  unresolved  pending  claims,  which
description includes,  among other things, whether the policy is an "occurrence"
or "claims  made" policy and whether  there is any  deductible  or  self-insured
retention  with  respect to such policy.  All such current  policies are in full
force and effect on the date hereof. Such policies insure the Company and/or its
Subsidiaries,  as the case may be, against such risks and are in such amounts as
the Company  reasonably  believes  are  necessary to conduct its  business.  The
Company and its  Subsidiaries  are not in default with respect to any provisions
or requirements of any such policy nor have any of them failed to give notice or
present any claim  thereunder in due and timely fashion,  except for defaults or
failures which, individually or in the aggregate, do not have a Material Adverse
Effect. Neither the Company nor any of its Subsidiaries have received any notice
of  cancellation  or  termination  in respect of any of the  insurance  policies
listed on the Disclosure Schedule.

     Section 3.18 Accounts  Receivable.  The  Disclosure  Schedule sets forth an
aged list of the accounts  receivable of the Company and its Subsidiaries at May
31, 1996. All such accounts receivable, and all accounts receivable subsequently
acquired by the Company or any of its Subsidiaries, arose in the ordinary course
of business. The Company has no knowledge or any reason to believe that, subject
to the  Company's  allowance  for  doubtful  accounts and  maintenance  contract
allowance  as  reflected  in  the  Unaudited  Financial  Statements  and/or  the
Company's internal  accounting records (all of which have been made available to
PCN for review), such accounts receivable are not collectible at their aggregate
recorded accounts in the ordinary course of business.

     Section 3.19 Contracts. (a) Except as set forth in the Disclosure Schedule
or any Company SEC Document, neither the Company nor any of its Subsidiaries is
party to or bound by any:

          (i) lease agreement  (whether as lessor or lessee) relating to real or
     personal property  requiring payments of more than $10,000 on an annualized
     basis or which cannot be canceled or terminated (or will not, by its terms,
     terminate) within one year of the date hereof;

          (ii) license agreement, assignment or contract (whether as licensor or
     licensee,  assignor or  assignee)  relating  to  trademarks,  trade  names,
     patents,  or copyrights (or applications  therefor),  software,  unpatented
     designs or processes,  formulae, know-how or technical assistance, or other
     proprietary  rights,  including,   without  limitation,   the  Intellectual
     Property (other than standard  licenses of the Company's  software products
     to in the ordinary course of business);

          (iii) employment,  consulting agreement,  severance agreements,  other
     agreement  regarding  employees,  directors  or agents,  including  any (x)
     agreement  with  any  officer  or  other  employee  of the  Company  or any
     Subsidiary the benefits of which are contingent,  or the terms of which are
     materially  altered,  upon the  occurrence of a  transaction  involving the
     Company of the nature  contemplated  by this  Agreement or (y) agreement or
     plan,  any of the benefits of or rights under which will be  increased,  or
     the  vesting or payment of the  benefits  of or rights  under which will be
     accelerated,  by the occurrence of any of the transactions  contemplated by
     this  Agreement,  in each case other than  agreements  entered  into at the
     request of PCN;

          (iv)  non-competition,   non-disclosure,  secrecy  or  confidentiality
     agreement or similar agreement,  including,  without  limitation,  any such
     agreement  with any  employee  of the  Company,  other  than  the  Employee
     Confidentiality  Agreement (as defined in Section 3.16), agreements entered
     into in the  ordinary  course of 


                                   A-16
<PAGE>

     business consistent with past practice, agreements with the Company related
     specifically  to  the  transactions  contemplated  by  this  Agreement  and
     agreement under which the Company is the disclosing party;

          (v) agreement or other arrangement  pursuant to which the Company acts
     as a  remarketer  or reseller of goods or  services  for another  person or
     entity;

          (vi)  agreement  with  any  value-added  reseller,  business  partner,
     distributor, dealer, sales agent or representative with respect to the sale
     or licensing of the Company's products or services;

          (vii)  agreement  with any  manufacturer,  supplier or  customer  with
     respect to discounts or allowances or extended payment terms;

          (viii) any original equipment manufacture agreement;

          (ix) joint venture or partnership agreement with any other person;

          (x) agreement for the borrowing or lending of money;

          (xi) agreement guaranteeing, indemnifying or otherwise becoming liable
     for the obligations or liabilities of another;

          (xii)   agreement  with  any  bank,   financing   company  or  similar
     organization  which acquires accounts  receivable or contracts for the sale
     of merchandise on credit;

          (xiii) agreement  granting to any person a lien,  security interest or
     mortgage on any asset of the Company or any of its Subsidiaries, including,
     without limitation, any factoring agreement or agreement for the assignment
     of accounts receivable or inventory;

          (xiv)  agreement for the  construction or modification of any building
     or structure or for the  incurrence  of any other capital  expenditures  in
     excess of $20,000;

          (xv) advertising agreement;

          (xvi) agreement which restricts the Company or any of its Subsidiaries
     from conducting any type of business anywhere in the world;

          (xvii) long-term sale or private brand agreement;

          (xviii)  claims  clearing   agreement,   electronic  data  interchange
     agreement,  clinical  laboratory  link or other  agreement which permits or
     relates to the linkage of any of the Seller's  software  products  with any
     other software product or service;

          (xix) source-code escrow agreements;

          (xx)  agreement  entered  into  since  January 1, 1994  regarding  any
     acquisition  or disposition of any assets by or from the Company other than
     in the  ordinary  course of business  containing  any  currently  operative
     provisions;

          (xxi) currently  operative  agreement  regarding the settlement of any
     litigation; or

          (xxii) other  material  agreement  affecting the Company or its assets
     entered into out of the ordinary course of business which are for an amount
     in excess of $15,000 on an annualized  basis or which have a remaining term
     of one year or more.

     Also set forth on the Disclosure Schedule is a list of (i) the 50 end-users
of the  Company's  medical  software  products who or which  generated  the most
revenues for the Company  during the nine (9) month period ended March 31, 1996;
and (ii) the 50 end-users of the Company's hospital system software products who
or which  generated  the most  revenue  for the  Company  during the same period
(collectively,  "Material  End-Users").  Correct and complete copies of all such
agreements, licenses, leases, contracts,  arrangements and other instruments and
written  amendments  thereto (or, where they are oral, true and complete written
summaries  thereof) referred to in this Section 3.19(a) and shown or required to
be shown on the Disclosure  Schedule or Company SEC Document (together with each
agreement  with a  Material  End-User,  collectively  referred  to herein as the
"Material  Contracts"),  have been made available to PCN on or prior to the date
hereof.



                                   A-17
<PAGE>


     (b) Except as set forth in the  Disclosure  Schedule,  each of the Material
Contracts  is valid,  in full force and effect and  enforceable  in all material
respects  by the  Company  or its  Subsidiaries  in  accordance  with its  terms
(subject to the effects of insolvency and general  creditors' rights laws and to
equitable principles of general application).

     (c)  Except as set forth in the  Disclosure  Schedule,  the  Company or its
Subsidiary,  as applicable,  has fulfilled,  or has taken all action  reasonably
necessary  to have been taken to date to enable it to fulfill  when due,  all of
its material or monetary and obligations under the Material Contracts. Except as
indicated  in the  Disclosure  Schedule,  there has not occurred any material or
monetary  default by the Company or any of its  Subsidiaries or any event which,
with the giving of notice or the lapse of time or both,  and/or the  election of
any person other than the Company or such  Subsidiary  will become a material or
monetary default,  nor, to the knowledge of the Company,  has there occurred any
material or  monetary  default by others or any event  which,  with the lapse of
time  and/or the  election  of the  Company  or its  Subsidiary,  will  become a
material or monetary default under any of the Material Contracts.  Except as set
forth in the Disclosure Schedule,  neither the Company nor any other party is in
arrears in respect of the  performance or  satisfaction  of any material term or
condition to be performed or satisfied by it under any of the Material Contracts
and, to the best  knowledge of the  Company,  no waiver or  indulgence  has been
granted by any of the parties thereto.

     (d) Except as set forth in the  Disclosure  Schedule,  the Merger  will not
result in a breach or default by the Company under any of the Material Contracts
and the consent of the other  parties  thereto will not be required with respect
thereto.

     (e) Except as disclosed in the  Disclosure  Schedule or with respect to the
Company's  agreements with the Material  End-Users,  all of the end-user license
agreements, end-user maintenance and enhancement agreements and end-user support
agreements  between the Company  and any  end-user or licensor of the  Company's
products or services, including, without limitation,  computer hardware, medical
practice management  software products and hospital  information system software
products,  are  substantially  in the  form of the  agreements  attached  to the
Disclosure Schedule and contain no material variation therefrom.

     Section  3.20  Related  Party  Transactions.  Except  as set  forth  in the
Disclosure Schedule, neither the Company nor any of its Subsidiaries has entered
into any transaction which is still operative with (i) an officer or director of
the Company or of any of its Subsidiaries,  (ii) a record or beneficial owner of
five  percent  or more of the  voting  securities  of the  Company  or  (iii) an
affiliate of any such officer,  director or beneficial  owner other than payment
of compensation for services rendered to the Company or its Subsidiaries.

     Section 3.21 Vote Required;  Voting Agreement. The only vote of the holders
of any class or series of the Company's  capital  stock  necessary to adopt this
Agreement is the Company Vote.  Pursuant to certain  Voting  Agreements  (each a
"Voting  Agreement" and collectively,  the "Voting  Agreements") dated as of the
date hereof  among  certain  beneficial  owners of Common  Stock (the  "Majority
Holders") and PCN, the Majority Holders have agreed to vote in favor of adopting
this Agreement  votes that are presently  sufficient,  and will be sufficient at
the time of the meeting to be held by the Company regarding the adoption of this
Agreement (the "Company Meeting"),  to approve the adoption of this Agreement by
the Company Vote. Each of the Majority  Holders is: (i) the beneficial  owner of
the number of shares of Common Stock shown as being  beneficially  owned by such
Majority  Holder  in the  Voting  Agreement  and (ii) has the right to vote such
shares of Common Stock at the Company Meeting.

     Section 3.22 Customers and Suppliers. The Disclosure Schedule contains: (a)
the  number of  currently  active  end-users  who or which,  as the case may be,
licensed any product from the Company or any of its Subsidiaries (categorized by
medical  software  products,  hardware  information  system  software  products,
networking products and hardware products);  (b) the number of current end-users
who or which,  as the case may be,  receives  any  services,  including  without
limitation,  any maintenance or support services, from the Company or any of its
Subsidiaries  (collectively,   "Customers")  (categorized  by  medical  software
products, hardware information system software products, networking products and
hardware  products);  and (c) a good faith  estimate of the number of  physician
Customers who utilize the Company's  medical  software  products.  Except as set
forth on the Disclosure  Schedule,  neither the Company nor its


                                   A-18
<PAGE>


Subsidiaries  has received any  notifications  (whether written or verbal) that:
(i) any Material  End-Users or suppliers;  or (ii) other  Customers who or which
account for 10% or more in the  aggregate of the  Company's  current  annualized
revenues,  will or may cease to continue such relationship with the Company,  or
will or may substantially  reduce the extent of such  relationship,  at any time
prior to or after the Closing Date except  normal  turnover of the customer base
consistent with past  experience.  Neither the Company nor its  Subsidiaries has
knowledge of any other material  modification  or change in the Company's or any
of its  Subsidiaries'  business  relationship  with such  Material  End-Users or
suppliers and neither the Company nor any of its  Subsidiaries is engaged in any
material dispute with any Material End-User or suppliers. Except as set forth on
the Disclosure  Schedule,  neither the Company nor its Subsidiaries is obligated
to provide any  maintenance or support  services to any person or entity free of
charge.

     Section 3.23 Bank Accounts.  Set forth on the Disclosure Schedule is a true
and complete list of: (i) the name of each bank or other financial  institutions
in which the Company or its  Subsidiaries  has an account or safe  deposit  box;
(ii) the type and number of each such account or safe deposit box; and (iii) the
names of all persons authorized to draw thereon or have access thereto.

     Section 3.24 Accounting Controls. To the best knowledge of the Company, the
Company has not made, and does not have, any unlawful  payments  problems of the
type that could reasonably be expected to have a Material Adverse Effect.

     Section 3.25  Finders and  Investment  Bankers.  Except as set forth on the
Disclosure Schedule,  no broker,  finder or investment banker is entitled to any
brokerage,  finder's or other fee or commission in connection with the Merger or
any other transaction contemplated hereby on account of any actions taken by the
Company, any of its Subsidiaries or any of its shareholders.

     Section 3.26 Information  Supplied.  None of the information supplied or to
be supplied by the Company for  inclusion  in: (i) the S-4 will, at the time the
S-4 is  filed  with  the SEC and at the  time it  becomes  effective  under  the
Securities  Act or at the  Effective  Time,  contain any untrue  statement  of a
material fact or omit to state any material  fact required to be stated  therein
or necessary to make the statements  therein not misleading;  and (ii) the Proxy
Statement  will,  at the date mailed to the  Company's  stockholders  and at the
respective  times of any meetings of  stockholders to be held in connection with
the Merger or at the Effective Time,  contain any untrue statement of a material
fact or omit to state  any  material  fact  required  to be  stated  therein  or
necessary in order to make the statements therein, in light of the circumstances
under which they are made, not misleading.  The Proxy  Statement,  insofar as it
relates to the Company or Subsidiaries of Company or other information  supplied
by the Company for  inclusion  therein,  will comply as to form in all  material
respects with the  provisions of the Exchange Act and the rules and  regulations
thereunder,  and  the  S-4,  insofar  as  it  relates  to  the  Company  or  its
Subsidiaries or other information supplied by the Company for inclusion therein,
will  comply as to form in all  material  respects  with the  provisions  of the
Securities Act and the rules and regulations thereunder.

     Section 3.27 Disclosure.  No  representation  or warranty by the Company in
this  Agreement  and no statement  contained  in any  document or other  writing
furnished  or to be  furnished  to PCN or its  representatives  pursuant  to the
provisions hereof contains or will contain any untrue statement of material fact
or omits or will omit to state any material fact  necessary in order to make the
statements  made  herein or  therein  not  misleading.  All  copies of  Material
Contracts  and  all  other  documents  delivered  to PCN or its  representatives
pursuant hereto are true, complete and accurate in all material respects.  There
has been no event  or  transaction  (other  than the  transactions  contemplated
hereby and the matters related thereto) which has occurred or information  which
has come to the  attention  of the Company  (other  than  events or  information
relating  to  economic  conditions  of general  public  knowledge)  which  could
reasonably  be  expected  to have a  Material  Adverse  Effect  or  which  could
reasonably  be  expected  to  prevent or impair  the  ability  of the  Surviving
Corporation,  after the Effective  Time, to carry on the business of the Company
and its Subsidiaries in the same manner as it is presently being conducted.


                                   ARTICLE IV

                            COVENANTS OF THE COMPANY

     Section 4.1 Conduct of Business of the Company  Pending the Merger.  During
the period from the date of this  Agreement to the Effective  Time,  the Company
agrees as to  itself  and its  Subsidiaries  that  (except  as  contemplated  or
expressly  permitted by this Agreement or to the extent that PCN shall otherwise
agree in writing):

          (a) The  businesses  of the  Company  and its  Subsidiaries  shall  be
     conducted  only  in  the  ordinary  course  of  business  and  in a  manner
     consistent with past practice.

          (b) The Company shall use its  reasonable  commercial  efforts to: (i)
     preserve, and shall cause its Subsidiaries to preserve, intact the business
     organization  of  itself  and its  Subsidiaries;  (ii) keep  available  the
     services of its 



                                   A-19
<PAGE>


     present officers, employees and consultants; and (iii) preserve its present
     relationships with Customers, suppliers and other persons with which it has
     a significant business relationship.

          (c)  The  Company   shall  not,  and  shall  not  permit  any  of  its
     Subsidiaries to, amend or propose to amend its Articles of Incorporation or
     By-Laws or equivalent organizational documents.

          (d) The Company shall not, nor shall it permit any of its Subsidiaries
     to,  issue,  deliver,  sell or pledge,  or  authorize  or propose to issue,
     deliver,  sell or pledge,  any shares of its capital stock of any class, or
     any  securities  convertible  into,  or any rights,  warrants or options to
     acquire any such  shares,  or  convertible  securities  or other  ownership
     interest, except, in each case, as required by the terms of the Options.

          (e) The Company shall not, nor shall it permit any of its Subsidiaries
     to: (i) declare, propose to declare, set aside, make or pay any dividend or
     other  distribution,  payable in cash, stock,  property or otherwise,  with
     respect to any of its capital stock; or (ii)  reclassify,  combine,  split,
     subdivide or redeem, purchase or otherwise acquire, directly or indirectly,
     any of its capital stock.

          (f) The Company shall not, nor shall it permit any of its Subsidiaries
     to,  acquire or agree to acquire by merging or  consolidating  with,  or by
     purchasing a substantial equity interest in or a substantial portion of the
     assets  of,  or by any  other  manner,  any  business  or any  corporation,
     partnership, association or other business organization or division thereof
     or  otherwise  acquire or agree to acquire  any  material  amount of assets
     other than in the ordinary course of business.

          (g) The Company shall not, nor shall it permit any of its Subsidiaries
     to, sell, lease,  encumber or otherwise dispose of, or agree to sell, lease
     (whether  such  lease  is an  operating  or  capital  lease),  encumber  or
     otherwise dispose of any portion of its assets,  other than in the ordinary
     course consistent with past practice.

          (h) The Company shall not, nor shall it permit any of its Subsidiaries
     to,  incur  any  indebtedness  for  borrowed  money or  guarantee  any such
     indebtedness  or issue or sell any debt securities or warrants or rights to
     acquire any debt  securities of the Company or any of its  Subsidiaries  or
     guarantee any debt  securities  of others or enter into any lease  (whether
     such lease is an operating or capital lease) other than in each case in the
     ordinary course of business under the Company's existing credit facilities.

          (i) Neither the Company nor any of its Subsidiaries  shall: (i) except
     to the extent required by applicable law or as required or permitted by the
     terms of any currently effective employment agreement, increase or agree to
     increase the compensation  (whether cash or non-cash)  payable or to become
     payable to their  officers or employees,  except for increases in salary or
     wages of  employees,  other than  officers  who are  currently  paid annual
     compensation  in  excess  of  $50,000,   of  the  Company  or  any  of  its
     Subsidiaries  (whether in such capacity or  otherwise)  in accordance  with
     past  practices and not to exceed 5% on an annual  basis;  (ii) increase or
     agree to  increase  the  compensation  payable or to become  payable to any
     executive  officer of the Company or any of its  Subsidiaries who currently
     receives  annual  compensation  in  excess  of  $50,000;  (iii)  grant  any
     severance or termination pay to, or enter into any  employment,  consulting
     or severance  agreement with any executive officer,  director,  employee or
     agent  of the  Company  or any of its  Subsidiaries;  (iv)  enter  into any
     collective  bargaining  agreement;  or (v) establish,  adopt, enter into or
     amend any Benefit  Plan or establish  or adopt any other  employee  benefit
     plan for the benefit of any directors, officers or employees.

          (j) Neither the Company nor any of its  Subsidiaries  shall authorize,
     recommend,  propose or announce an intention to adopt a plan of complete or
     partial liquidation or dissolution.

          (k) Neither the Company nor any of its  Subsidiaries  shall enter into
     any  settlement  agreement  with  respect  to any  grievances,  litigation,
     administrative  charges, or any other litigation pending on the date hereof
     or arising  hereafter which are not either consistent with past practice or
     which will have a Material Adverse Effect.

          (l) Neither the Company nor any of its Subsidiaries shall terminate or
     amend or modify in any material respect any of the Material Contracts.

          (m) The Company will promptly notify PCN in the event that it fails to
     operate its business in accordance with this Section 4.1.



                                   A-20
<PAGE>


     Section 4.2 Acquisition  Proposals.  The Company and its Subsidiaries  will
not,  nor will they  authorize  or permit any of their  officers,  directors  or
employees or any investment banker, financial advisor,  attorney,  accountant or
other representative  retained by the Company or any of its Subsidiaries to: (i)
initiate  contact  with,  solicit or otherwise  encourage  any  inquiries or the
making of any proposal which constitutes,  or may reasonably be expected to lead
to,  any  Acquisition  Proposal  (as  hereinafter  defined);  or (ii)  engage in
negotiations  concerning,  provide  any  nonpublic  information  to, or have any
discussions with, any person relating to any Acquisition  Proposal.  The Company
and its  Subsidiaries  will  immediately  cease and cause to be  terminated  any
existing  activities,  discussions or  negotiations  with any parties  conducted
heretofore with respect to any of the foregoing.  The Company shall  immediately
notify  PCN  of  any  negotiations,   requests  for  nonpublic   information  or
discussions  with  respect to an  Acquisition  Proposal  and will keep PCN fully
informed of the status and terms of any such Acquisition Proposal, indication or
request. As used in this Agreement, "Acquisition Proposal" means any proposal or
offer for a merger,  consolidation,  share exchange,  recapitalization  or other
business  combination  involving the Company or any of its  Subsidiaries  or any
proposal  or offer to acquire an equity  interest  in, all or (other than in the
ordinary  course of business  consistent  with past practice) any portion of the
assets  of the  Company  (including  any  capital  stock or assets of any of its
Subsidiaries) other than the transactions contemplated by this Agreement.

     Section 4.3 Tax Returns. The Company and each of its Subsidiaries will file
all Tax Returns  required to be filed by any of them  (including  estimated  Tax
Returns)  and will pay (or the  Company  will pay on its  behalf)  all taxes due
prior to the Effective Time.

     Section 4.4 Financial Statements.  As soon as available,  the Company shall
deliver to PCN copies of unaudited financial  statements for each fiscal quarter
and each month ending after the date hereof.


                                    ARTICLE V

                              ADDITIONAL AGREEMENTS

     Section 5.1  Preparation  of S-4 and Proxy  Statement.  PCN and the Company
shall  as  promptly  as  practicable  prepare  and file  with the SEC the  Proxy
Statement  and PCN shall  prepare  and file  with the SEC the S-4,  in which the
Proxy  Statement will be included as a prospectus.  PCN shall use all reasonable
efforts,  and the Company  shall  cooperate  with PCN, to have the S-4  declared
effective by the SEC as promptly as practicable and to keep the S-4 effective as
long as is  necessary  to  consummate  the  Merger.  PCN shall,  as  promptly as
practicable,  provide copies of any written comments  received from the SEC with
respect to the S-4 to the Company and advise the Company of any verbal  comments
with  respect  to the S-4  received  from the SEC.  The  Company  shall  use all
reasonable efforts to cause the Proxy Statement to be mailed to its stockholders
at the earliest practicable date. PCN shall use all reasonable efforts to obtain
all  necessary  state  securities  laws or "blue  sky"  permits,  approvals  and
registrations  in  connection  with the  issuance of PCN Stock  pursuant to this
Agreement. If at any time prior to the Effective Time, any event with respect to
PCN or any of its Subsidiaries or with respect to other information  supplied by
PCN or for inclusion in the Proxy Statement or S-4 shall occur which is required
to be described in an amendment of, or a supplement  to, the Proxy  Statement or
the S-4,  such event shall be so  described,  and such  amendment or  supplement
shall be promptly  filed with the SEC and, as required by law,  disseminated  to
the stockholders of the Company. If at any time prior to the Effective Time, any
event with respect to the Company or any of its  Subsidiaries or with respect to
other  information  supplied by the Company for inclusion in the Proxy Statement
or S-4 shall occur which is required to be described  in an  amendment  of, or a
supplement to, the Proxy Statement or the S-4, such event shall be so described,
and such  amendment or supplement  shall be promptly  filed with the SEC and, as
required by law,  disseminated  to the  stockholders  of the Company.  PCN shall
advise the Company,  promptly after it receives notice thereof, of the time when
the S-4 has become  effective or any  supplement  or amendment  thereto has been
filed,  the  issuance  of any  stop  order,  the  denial  or  suspension  of the
qualification  of the PCN Stock  issuable  in  connection  with the  Merger  for
offering or sale in any jurisdiction or any request by the SEC for any amendment
or supplement to the S-4 or comments  thereon and responses  thereto or requests
by the SEC for additional information.

     Section 5.2 Letters of  Accountants.  The Company shall use all  reasonable
efforts to cause to be delivered  to PCN a letter of BDO Seidman & Company,  the
Company's independent auditors (the "Company Auditors"), dated a date within two
Business  Days  before  the date on which the S-4  shall  become  effective  and
addressed  to  PCN,  of the  kind  contemplated  by the  Statement  of  Auditing
Standards  with respect to Letters to  Underwriters  promulgated by the American
Institute of Certified Public  Accountants  (the "AICPA  Statement") in form and




                                   A-21
<PAGE>


substance reasonably  acceptable to PCN and customary in scope and substance for
letters  delivered  by  independent   public   accountants  in  connection  with
registration statements similar to the S-4.

     Section 5.3 Access to  Information.  From the date hereof to the  Effective
Time,  PCN and the Company shall each (and shall cause each of their  respective
Subsidiaries to) afford to the other, and the officers, employees,  accountants,
counsel and other  representatives of the other,  access at all reasonable times
to  its  officers,   employees,  agents,  properties,   offices,  plants,  other
facilities  and to all books and  records  (including  tax  returns),  and shall
furnish  to the  other  party  all  financial,  operating  and  other  data  and
information as the other party,  through its officers,  employees or agents, may
reasonably  request;  provided,  however,  that  any  such  access  and all such
requests shall be reasonably related to the transactions contemplated hereby and
shall not interfere  unnecessarily with normal  operations.  Each of the Company
and PCN agrees that it will not, and will cause its  respective  representatives
not to,  use any  information  obtained  pursuant  to this  Section  5.3 for any
purpose  unrelated to the  consummation of the transaction  contemplated by this
Agreement.  The  Confidentiality  Agreement  between  PCN and the  Company  (the
"Confidentiality  Agreement") shall apply with respect to information  furnished
by the Company or its Subsidiaries and the Company's representatives  thereunder
or hereunder and any other  activities  contemplated  thereby and to information
furnished by PCN or its  Subsidiaries  and PCN's  representatives  thereunder or
hereunder and any other activities  contemplated thereby. The parties agree that
this Agreement and the transactions  contemplated  hereby shall not constitute a
violation of the Confidentiality Agreement.

     Section 5.4 Meetings of  Stockholders.  The Company shall promptly take all
action  necessary in accordance with the WBCA and its articles of  incorporation
and  by-laws  to  convene a  meeting  of its  stockholders  for the  purpose  of
approving this Agreement and the transactions  contemplated  hereby. The Company
will, through its Boards of Directors, recommend to its stockholders approval of
such matters and shall use its  reasonable  best efforts to obtain  approval and
adoption  of this  Agreement  and the  transactions  contemplated  hereby by its
stockholders.

     Section 5.5 Legal  Conditions  to Merger.  Each of the Company and PCN will
take all  reasonable  actions  necessary  to  comply  promptly  with  all  legal
requirements  which may be imposed on it with  respect to the Merger  (including
furnishing all  information  required in connection with approvals of or filings
with any  Governmental  Entity)  and will  promptly  cooperate  with and furnish
information to each other in connection with any such requirements  imposed upon
any of them or any of their Subsidiaries in connection with the Merger.

     Section 5.6 NASDAQ Listing.  Prior to the Effective Time, PCN shall use all
reasonable  efforts  to  permit  it to issue  the  number of shares of PCN Stock
required to be issued pursuant to this Agreement, including, without limitation,
filing  for  listing  of such  shares on the NASDAQ  Stock  Market  prior to the
Closing Date.

     Section 5.7 Stock Options.  (a) The Company shall use its  reasonable  best
efforts to cause all options to  purchase  Common  Stock,  whether or not vested
("Options"),  whose purchase price per share is less than or equal to the Merger
Consideration  per  share  of  Common  Stock  ("In-the-Money  Options"),  to  be
exercised  or  canceled  prior to the  Effective  Time.  To the extent  that the
Company has an  obligation  to do so or determines to be in the best interest of
the Company,  promptly  following  June 30, 1996,  the Company shall grant those
Options set forth in the Disclosure Schedule which are not outstanding as of the
date  hereof.  All such Options  shall  provide  that,  unless  exercised  prior
thereto, such Options shall terminate on the Trigger Date.

     (b)  After  the  Effective  Time,  each  Option  then   outstanding   shall
automatically be deemed to constitute an option or right to acquire, on the same
terms and conditions as were  applicable  under such Option,  the amount of Cash
Consideration  and the number of shares of PCN Stock as such  Option  would have
entitle the holder  thereof to receive if such Option had been exercised in full
immediately prior to the Effective Time;  provided  however,  that the number of
shares of PCN Stock that may be purchased upon exercise of such Option shall not
include any fractional  share and, upon exercise of such Option,  a cash payment
shall be made for any  fractional  share based upon the closing price of a share
of PCN Common Stock on the NASDAQ  Stock  Market on the trading day  immediately
preceding the date of exercise.

     Section  5.8 Advice of  Changes;  Governmental  Filings.  Each party  shall
confer on a regular and  frequent  basis with the other,  report on  operational
matters and  promptly  advise the other  orally and in writing of: (i) any event
which  occurs  after the date hereof that would under this  Agreement  have been
required  to be  disclosed  on the date of the  execution  and  delivery of this
Agreement  had such event  occurred on or prior to the date hereof or would have
resulted  in a breach of any  representation,  warranty  covenant  or  agreement
contained herein; and (ii) any change or event having, or which,  insofar as can
reasonably be foreseen, could have, a Material Adverse Effect.



                                   A-22
<PAGE>

     Section 5.9 No Action.  Except as contemplated by this Agreement,  no party
hereto will, nor will either such party permit any of its  Subsidiaries to, take
or agree or commit to take any action that is  reasonably  likely to make any of
its representations or warranties  hereunder  inaccurate in any material respect
at the date made (to the extent so limited) or as of the Effective Time.

     Section 5.10 Legal  Conditions to Merger.  Each of the Company and PCN will
take all  reasonable  actions  necessary  to  comply  promptly  with  all  legal
requirements  which  may be  imposed  on  itself  with  respect  to  the  Merger
(including  furnishing all information  required in connection with approvals of
or filings with any  Governmental  Entity) and will promptly  cooperate with and
furnish  information  to each  other in  connection  with any such  requirements
imposed upon any of them or any of their  Subsidiaries  in  connection  with the
Merger.

     Section 5.11 Tax Opinion.  The Company  shall cause its counsel to issue to
the Company an opinion, dated prior to the date on which the S-4 is first mailed
to  shareholders  of the  Company,  to the effect  that (so long as the All Cash
Option is not exercised):  (i) the Merger will be treated for federal income tax
purposes as a  reorganization  within the meaning of Section 368(a) of the Code;
(ii)  each  of  PCN,  Merger  Sub  and  the  Company  will  be a  party  to  the
reorganization  within the meaning of Section 368(b) of the Code;  (iii) no gain
or loss will be recognized by PCN,  Merger Sub or the Company as a result of the
Merger;  (iv) with respect to the shares of PCN Stock to be issued in connection
with the  Merger,  no gain or loss will be  recognized  by  shareholders  of the
Company;  and (v) such other matters  related to the tax treatment of the Merger
Consideration  as are customary in connection with a transaction  similar to the
Merger  in which a Form  S-4  joint  proxy/prospectus  is  utilized,  including,
without limitation,  matters relating to stock basis, holding periods, treatment
of  cash  received  for  fractional   shares  and  the  treatment  of  the  Cash
Consideration.

     Section 5.12  Description of Owned  Property.  The Company shall deliver to
PCN,  as soon  practicable  but in no event  later  than three days prior to the
Effective Time, a true and complete description of the Owned Property.

     Section 5.13  Additional  Agreements;  Reasonable  Efforts.  Subject to the
terms and conditions of this Agreement, each of the parties hereto agrees to use
all reasonable business efforts to take, or cause to be taken, all action and to
do,  or cause to be done,  all  things  necessary,  proper  or  advisable  under
applicable   laws  and   regulations   to  consummate  and  make  effective  the
transactions  contemplated by this  Agreement,  including,  without  limitation,
using its reasonable best efforts to obtain all necessary waivers,  consents and
approvals and to cause the conditions set forth in Article VI to be satisfied as
promptly as practicable. Without limiting the foregoing, the parties hereto will
execute and deliver,  or cause to be executed and delivered,  all such documents
and instruments, in addition to those specifically required by the provisions of
this  Agreement,  in form and substance  reasonably  satisfactory to the parties
hereto,  as may be reasonably  necessary or desirable to carry out and implement
the provisions of this Agreement.


                                   ARTICLE VI

                              CONDITIONS OF MERGER

     Section 6.1  Conditions  to  Obligation of Each Party to Effect the Merger.
The  respective  obligations of each party to effect the Merger shall be subject
to  the  fulfillment  at or  prior  to  the  Effective  Time  of  the  following
conditions:

          (a)  Shareholder  Vote.  This Agreement shall have been adopted by the
     Company Vote.

          (b) Other  Approvals.  Other than the filing  provided  for by Section
     1.2, all authorizations,  consents, orders or approvals of, or declarations
     or  filings  with,  or  expirations  of  waiting  periods  imposed  by, any
     Governmental  Entity  required in connection  with the  consummation of the
     Merger,  the failure to obtain which has a Material  Adverse  Effect on PCN
     and its  Subsidiaries,  taken as a whole  (assuming  the  Merger  had taken
     place),  shall have been filed,  occurred or been obtained.  PCN shall have
     received all state securities laws or "blue sky" permits and authorizations
     necessary to issue PCN Stock pursuant to the Merger.

          (c) S-4. The S-4 shall have become  effective under the Securities Act
     and shall not be the  subject  of any stop order or  proceedings  seeking a
     stop order.

          (d) No  Injunction.  No temporary  restraining  order,  preliminary or
     permanent  injunction  or other  order  issued  by any  court of  competent
     jurisdiction prohibiting the consummation of the Merger shall be in effect;



                                   A-23
<PAGE>

     provided,  however, that prior to invoking this condition, each party shall
     use all reasonable efforts to have any such decree,  ruling,  injunction or
     order vacated, except as otherwise contemplated by this Agreement.

          (e) Violation of Law. No statue,  rule or  regulation  shall have been
     adopted which will result in the  consummation of the Merger  violating any
     applicable law.

     Section 6.2 Additional Conditions to Obligations of PCN and Merger Sub. The
obligations  of PCN and Merger Sub to effect the Merger are also  subject to the
following conditions (any one or more of which may be waived by PCN, but only in
a writing signed by PCN):

          (a)  Representations  and Warranties.  Each of the representations and
     warranties of the Company contained in this Agreement or in any document or
     instrument delivered by the Company in connection  herewith,  shall be true
     and correct,  individually and in the aggregate,  in all material  respects
     (except that any specific  representation  or warranty that is qualified as
     to  materiality  must be true as written)  on and as of the  Closing  Date,
     except for changes contemplated by this Agreement,  with the same force and
     effect  as if made on and as of the  Closing  Date,  except  that  any such
     representations  or warranties  made as of a specified date shall have been
     true on and as of such date.

          (b)  Agreements  and  Covenants.  The Company shall have  performed or
     complied in all material  respects with all of its agreements and covenants
     contained in this  Agreement  to be performed or complied  with by it at or
     prior to the Closing Date  (except that any specific  agreement or covenant
     that is qualified as to materiality must have been performed as written).

          (c) No Material Adverse Change. There shall have been no change in the
     business,   results  of  operations,   properties   (including   intangible
     properties),  financial  condition,  assets or  liabilities  of the Company
     since the date of this Agreement  which,  individually or in the aggregate,
     has a Material Adverse Effect.

          (d) Third Party  Consents.  The Company shall have  obtained,  and PCN
     shall have received copies of, all of the approvals,  waivers, consents and
     releases  of third  parties  listed on the  Disclosure  Schedule  under the
     caption "Required Consents and Related Approvals," none of which shall have
     been withdrawn, revoked or modified as of the Closing Date.

          (e)  Appraisal  Rights.  Shareholders  holding  no more than 5% of any
     class of the  outstanding  the  Common  Stock  shall  have  demanded  their
     dissenters rights under the WBCA.

          (f) Options.  All  In-the-Money  Options shall have been  exercised or
     canceled.

          (g) Opinion of Counsel.  PCN shall have received an opinion of outside
     counsel to the Company in form and  substance  reasonably  satisfactory  to
     PCN.

          (h) Compliance Certificate.  The Company shall have delivered to PCN a
     certificate,  dated  the  Closing  Date,  signed  by the  President  of the
     Company,  certifying as to the  fulfillment of the conditions  specified in
     paragraphs (a), (b) and (c) of this Section 6.2.

          (i)  Proceedings.  All corporate  proceedings  taken by the Company in
     connection  with the  transactions  contemplated  hereby and all  documents
     incident thereto shall be reasonably  satisfactory in all material respects
     to PCN and PCN's counsel, and PCN and PCN's counsel shall have received all
     such  counterpart  originals or certified or other copies of such documents
     as they may reasonably request.

     Section  6.3  Additional  Conditions  to  Obligation  of the  Company.  The
obligation of the Company to effect the Merger are also subject to the following
conditions (any one or more of which may be waived by the Company, but only in a
writing signed by the Company):

          (a)  Representations  and Warranties.  Each of the representations and
     warranties  of PCN and Merger Sub  contained  in this  Agreement  or in any
     document  or  instrument  delivered  by PCN  or  Merger  Sub in  connection
     herewith, shall be true and correct,  individually and in the aggregate, in
     all material respects (except that any specific  representation or warranty
     that is qualified as to  materiality  must be true as written) on and as of
     the Closing Date, except for changes  contemplated by this Agreement,  with
     the same force and effect as if made on and as of the Closing,  except that
     any such  representations  or warranties  made as of a specified date shall
     have been true on and as of such date.


                                   A-24
<PAGE>


          (b)  Agreements  and  Covenants.  PCN and the  Merger  Sub shall  have
     performed or complied in all material  respects with all of its  agreements
     and covenants  contained in this Agreement to be performed or complied with
     by it at or prior to the Closing Date  (except that any specific  agreement
     or covenant that is qualified as to materiality must have been performed as
     written).

          (c) No Material Adverse Change. There shall have been no change in the
     business,   results  of  operations,   properties   (including   intangible
     properties),  financial  condition,  assets or liabilities of PCN since the
     date of this Agreement which has a Material Adverse Effect.

          (d) Opinion of Counsel.  The Company shall have received an opinion of
     counsel  to  PCN in  form  and  substance  reasonably  satisfactory  to the
     Company.

          (e) Compliance Certificate.  PCN shall have delivered to the Company a
     certificate,  dated the Closing Date, signed by the Chairman,  President or
     any  Vice  President  of  PCN,  certifying  as to  the  fulfillment  of the
     conditions specified in paragraphs (a), (b) and (c) of this Section 6.3.

          (f) Proceedings.  All corporate proceedings taken by PCN in connection
     with  the  transactions  contemplated  hereby  and all  documents  incident
     thereto shall be reasonably  satisfactory  in all material  respects to the
     Company  and the  Company's  counsel,  and the  Company  and the  Company's
     counsel shall have received all such counterpart  originals or certified or
     other copies of such documents as they may reasonably request.


                                   ARTICLE VII

                        TERMINATION, AMENDMENT AND WAIVER

     Section 7.1 Termination. This Agreement may be terminated at any time prior
to the Effective Time, whether before or after adoption of this Agreement by the
shareholders of the Company:

          (a) By mutual  consent of the Board of  Directors of PCN and the Board
     of Directors of the Company; or

          (b) By either PCN or the  Company,  if the Merger  shall not have been
     consummated by October 15, 1996 (the "Termination Date") (provided that the
     right to terminate  this  Agreement  under this Section 7.1(b) shall not be
     available to any party whose  failure to fulfill any  obligation  hereunder
     has been the cause of or  resulted in the failure of the Merger to occur on
     or before such date); or

          (c) By either PCN or the  Company if there has been a material  breach
     of any representation,  warranty,  covenant or agreement on the part of the
     other party set forth in this  Agreement,  which  breach has not been cured
     within fifteen (15) Business Days following  receipt by the breaching party
     of notice specifying such breach in reasonable detail; or

          (d) By either PCN or the Company if a court of competent  jurisdiction
     or governmental  regulatory or  administrative  agency or commission having
     proper  jurisdiction  and  authority  thereof  shall have  issued an order,
     decree or ruling  (which order,  decree or ruling the parties  hereto shall
     use their best efforts to lift)  prohibiting the transactions  contemplated
     by this Agreement and such order,  decree or ruling shall have become final
     and non-appealable; or

          (e) By PCN or the  Company  if the  Company  Vote  shall not have been
     obtained  by reason of the  failure to obtain the  required  vote at a duly
     held meeting of shareholders or at any adjournment thereof; or

          (f) By PCN, if any Majority  Holder breaches any of the material terms
     of a Voting  Agreement or if any Voting  Agreement is not in full force and
     effect and enforceable in all material respects against the Majority Holder
     executing such agreement.

     Section 7.2 Effect of  Termination.  (a) Except as  otherwise  set forth in
this Section 7.2, in the event of  termination  of this Agreement as provided in
Section 7.1, this Agreement  shall  forthwith  become void and there shall be no
liability or further obligation on the part of any party hereto.

     (b) In the event of  termination  of this  Agreement as pursuant to Section
7.1(b) or (c) due to (a "Termination  Event"): (i) failure of the conditions set
forth  in  6.2(b)  or  6.3(b),  as the  case may be,  to  occur;  or (ii) if any
representation  or warranty of the Company or of PCN and Merger Sub, as the case
may be,  was  materially  inaccurate  at the time  that such  representation  or
warranty was given, the non-terminating party shall pay to the terminating party
an  amount  equal to all  damages,  losses,  costs,  expenses  and  liabilities,
including,  without  limitation,  reasonable fees


                                   A-25

<PAGE>


and disbursements of counsel,  financing  commitment and financial advisory fees
(collectively,  "Termination Losses"),  incurred by the non-terminating party in
connection with the  transaction  contemplated in this Agreement and any and all
other  damages,   losses,  costs,  expenses  and  liabilities  incurred  by  the
terminating  party as a result of such  Termination  Event.  In the event of the
termination of this Agreement by a party (the  "Terminating  Party") as a result
of a Termination  Event,  the foregoing  shall not be deemed in any way limit or
relieve the Terminating  Party of any liability to the  terminating  terminating
party  hereto  on  account  of a breach by the  Terminating  Party of any of its
representations, warranties, covenants or agreements contained herein.

     (c) Except as provided in paragraph (b) of this Section 7.2, whether or not
the Merger is  consummated,  all costs and expenses  incurred in connection with
the Merger,  this Agreement and the transactions  contemplated by this Agreement
shall be paid by the party incurring such expenses.

     Section 7.3 Amendment.  This Agreement may be amended by the parties hereto
(in the case of PCN, Merger Sub or the Company,  by action taken by or on behalf
of their  respective  Boards of  Directors)  at any time prior to the  Effective
Time;  provided,  however,  that,  after  adoption  of  this  Agreement  by  the
shareholders  of the  Company,  no  amendment  may be  made  which  would  under
applicable law require further approval by such shareholders unless such further
approval  is duly  obtained.  This  Agreement  may not be  amended  except by an
instrument in writing signed on behalf of the parties hereto.

     Section 7.4  Extension;  Waiver.  At any time prior to the Effective  Time,
PCN,  Merger Sub or the Company  may,  by action  taken or  authorized  by their
respective  Boards of Directors,  to the extent legally allowed:  (a) extend the
time for the  performance  of any of the  obligations or other acts of the other
parties hereto, (b) waive any inaccuracies in the representations and warranties
contained  herein or in any  document  delivered  pursuant  hereto and (c) waive
compliance with any of the agreements or conditions  contained herein.  Any such
extension or waiver shall be valid only if set forth in an instrument in writing
signed by the party to be bound thereby.


                                  ARTICLE VIII

                               GENERAL PROVISIONS

     Section 8.1 Non-Survival of Representations, Warranties and Agreements. (a)
None of the  representations,  warranties,  covenants or agreements contained in
this  Agreement or in any  certificate,  instrument  or  agreement  delivered in
connection herewith survive the Closing, except for Sections 1.4, 1.5, 1.6, 1.7,
1.8, 1.9, 1.10 and 1.11 hereof.

     Section 8.2  Notices.  All notices and other  communications  given or made
pursuant  hereto shall be in writing and shall be deemed to have been duly given
or made upon receipt, if made or given by hand delivery, telecopier or facsimile
transmission,  or upon receipt by registered or certified mail (postage prepaid,
return receipt  requested) at the following  addresses (or at such other address
for a party as shall be specified by like notice):

     (a) if to PCN or Merger Sub:

         Physician Computer Network, Inc.
         1200 The American Road
         Morris Plains, New Jersey 07950
         Attention: President
         (201) 490-3100 (telephone)
         (201) 490-3103 (telecopy)

     with copies to:
 
        Gordon Altman Butowsky
           Weitzen Shalov & Wein
         114 West 47th Street
         New York, New York 10036
         Attention: Jonathan Klein, Esq.
         212-626-0879 (Telephone)
         212-626-0799 (Telecopier)



                                   A-26

<PAGE>


     (b) if to the Company:

         Wismer-Martin, Inc.
         N. 12828 Newport Highway
         Mead, Washington 99021
         Attention: President
         (509) 466-0396 (Telephone)
         (509) 467-4538 (Telecopier)

     with copies to:

         Paine, Hamblen, Coffin, Brooke & Miller
         717 West Sprague Avenue, Suite 1200
         Spokane, Washington 99204
         Attention: Lawrence R. Small, Esq.
         (509) 455-0396 (Telephone)
         (509) 838-0007 (Telecopier)

     Section 8.3 Interpretation;  Certain Definitions.  When a reference is made
in this  agreement to  Sections,  such  reference  shall be to a Section of this
Agreement unless otherwise  indicated.  The headings contained in this Agreement
are for  reference  purposes only and shall not affect in any way the meaning or
interpretation  of this Agreement.  Whenever the word  "include",  "includes" or
"including" are used in this  Agreement,  they shall be deemed to be followed by
the words  "without  limitation".  As used herein,  the term  "Material  Adverse
Effect" means with respect to PCN or the Company, as the case may be, any effect
on the  business  of PCN or the  Company,  as the  case  may  be,  or any of its
Subsidiaries  that  is or  that  a  reasonable  person  would  believe  will  be
materially adverse to the business, results of operations, properties (including
intangible properties), financial condition, assets or liabilities of PCN or the
Company, as the case may be, and its Subsidiaries,  taken as a whole. The phrase
"made  available" in this Agreement shall mean that the information  referred to
has been made available if requested by the party to whom such information is to
be made available.

     Section 8.4  Counterparts.  This  Agreement  may be executed in two or more
counterparts,  all of which shall be considered  one and the same  agreement and
shall become effective when two or more counterparts have been signed by each of
the parties and delivered to the other  parties,  it being  understood  that all
parties need not sign the same counterpart.

     Section  8.5 Entire  Agreement;  No Third  Party  Beneficiaries;  Rights of
Ownership.  This Agreement (including the documents and the instruments referred
to herein)  constitutes the entire agreement and supersedes all prior agreements
and understandings, both written and oral, among the parties with respect to the
subject matter hereof.  This Agreement is not intended to confer upon any person
other than the  parties  hereto any rights or  remedies  hereunder.  The parties
hereby  acknowledge  that no party  shall  have the right to acquire or shall be
deemed to have  acquired  shares of common stock of the other party  pursuant to
the Merger until consummation thereof.

     Section  8.6  Governing  Law.  This  Agreement  shall be  governed  by, and
interpreted  under, the laws of the State of Washington  applicable to contracts
made and to be performed  therein without regard to conflicts of law principles.
The  consummation  and  effectiveness  of the Merger  shall be governed  by, and
construed in accordance with, the WBCA.

     Section 8.7 No Remedy in Certain  Circumstances.  Each party  agrees  that,
should  any  court or other  competent  authority  hold  any  provision  of this
Agreement or part hereof to be null, void or  unenforceable,  or order any party
to take any action  inconsistent  herewith  or not to take an action  consistent
herewith or required hereby,  the validity,  legality and  enforceability of the
remaining provisions and obligations  contained or set forth herein shall not in
any way be affected  or  impaired  thereby,  unless the  foregoing  inconsistent
action or the  failure  to take an  action  makes the  Agreement  impossible  to
perform in which case this  Agreement  shall  terminate  pursuant to Article VII
hereof.  Except as otherwise  expressly  contemplated by this Agreement,  to the
extent  that a party  hereto took an action  inconsistent  herewith or failed to
take  action  consistent  herewith or  required  hereby  pursuant to an order or
judgment  of a court or other  competent  authority,  such party  shall incur no
liability or  obligation  unless such party did not in good faith seek to resist
or object to the imposition or entering of such order or judgment.


                                   A-27
<PAGE>


     Section 8.8  Publicity.  The parties  will consult with each other and will
mutually agree upon any press release or public  announcement  pertaining to the
Merger  and  shall  not issue any such  press  release  or make any such  public
announcement prior to such consultation and agreement, except as may be required
by applicable law, in which case the party proposing to issue such press release
or make such public announcement shall use reasonable efforts to consult in good
faith with the other party before  issuing any such press  release or making any
such public announcement.

     Section 8.9  Assignment.  Except as expressly  provided in this  Agreement,
neither this Agreement nor any of the rights, interests or obligations hereunder
shall be assigned by any of the parties  hereto  (whether by operation of law or
otherwise)  without the prior written  consent of the other parties.  Subject to
the  preceding  sentence,  this  Agreement  will be binding  upon,  inure to the
benefit of and be enforceable by the parties and their respective successors and
assigns.

     Section  8.10  Specific  Performance.  The parties  acknowledge  that money
damages are not an adequate remedy for violations of this Agreement and that any
party may, in its sole  discretion,  apply to a court of competent  jurisdiction
for specific  performance  or  injunctive or such other relief as such court may
deem just and proper in order to enforce this Agreement or prevent any violation
hereof and, to the extent  permitted by  applicable  law,  each party waives any
objection to the imposition of such relief.

     Section 8.11 Remedies Cumulative.  All rights, powers and remedies provided
under this  Agreement  or  otherwise  available  in respect  hereof at law or in
equity shall be cumulative and not alternative, and the exercise or beginning of
the exercise of any thereof by any party shall not preclude the  simultaneous or
later exercise of any other such right, power or remedy by such party.

     IN WITNESS WHEREOF,  the parties hereto have caused this Agreement and Plan
of Merger to be executed on the date first above written.



                                            PHYSICIAN COMPUTER NETWORK, INC.

                                            By:    /s/  HENRY GREEN
                                                  -----------------------------
                                            Title:  President




                                             NORTHWEST ACQUISITION CORP.

                                             By:    /s/  HENRY GREEN
                                                   -----------------------------
                                             Title:  President




                                             WISMER-MARTIN, INC.

                                             By:    /s/  RONALD HOLDEN
                                                   -----------------------------
                                             Title: Chairman & CEO


                                      A-28

<PAGE>

                                                                               
                                                                      EXHIBIT I


                               ARTICLES OF MERGER

     Pursuant  to the  provisions  of RCW  23B.11.050,  Wismer-Martin,  Inc.,  a
Washington  corporation  (Wismer-Martin"),  hereby  executes  these  Articles of
Merger  by  the  terms  of  which  Northwest  Acquisition  Corp.,  a  Washington
corporation ("Northwest"),  shall be merged with and into Wismer-Martin, and the
undersigned corporation further states as follows:

      (1) Pursuant  to and in  accordance  with the terms and  provisions  of an
          Agreement  and Plan of Merger dated June 20, 1996,  between  Physician
          Computer  Network,  Inc.,  Wismer-Martin  and  Northwest  (the "Merger
          Agreement"),  a copy of which is  attached  hereto as  Exhibit  A, (x)
          Northwest   shall  be  merged  with  and  into   Wismer-Martin,   with
          Wismer-Martin  being  designated as the surviving  corporation and (y)
          the  articles of  incorporation  and by-laws of  Northwest,  copies of
          which are  attached  hereto as Exhibits B and C,  respectively,  shall
          become the articles of incorporation and by-laws of Wismer-Martin; and

      (2) The Merger  Agreement  was duly approved by the  shareholders  of both
          Wismer-Martin  and  Northwest   pursuant  to  the  provisions  of  RCW
          23B.11.030.

     IN WITNESS  WHEREOF,  Wismer-Martin,  Inc., the surviving  corporation  has
caused these  Articles of Merger to be executed by its duly  authorized  officer
this      day of          , 1996.


                               WISMER-MARTIN, INC.


                                           By:
                                              --------------------------------
                                              John F. Perez
                                              President
ATTEST:


- --------------------------------
Secretary


<PAGE>


STATE OF WASHINGTON
COUNTY OF SPOKANE         }  ss.

     I certify that I know or have  satisfactory  evidence that John F. Perez is
the person who appeared before me, and said person  acknowledged  that he signed
this instrument, on oath stated that he authorized to execute the instrument and
acknowledged  it as the  President of  WISMER-MARTIN,  INC.,  to be the free and
voluntary  act of  such  party  for  the  uses  and  purposes  mentioned  in the
instrument.

Dated:  _____________________


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

                                      Print Name:  _____________________________
                                      Notary Public in and for the State of 
                                      Washington, residing at Spokane

                                      My commission expires:  __________________







                                      I-2

<PAGE>


                                                                       ANNEX B


            CHAPTER 23B.13 OF THE WASHINGTON BUSINESS CORPORATION ACT


                               DISSENTERS' RIGHTS


23B.13.010 DEFINITIONS.--As used in this chapter:

     (A) "Corporation" means the issuer of the shares held by a dissenter before
the corporate  action,  or the surviving or acquiring  corporation  by merger or
share exchange of that issuer.

     (B)  "Dissenter"  means a  shareholder  who is  entitled  to  dissent  from
corporate  action under RCW  23B.13.020 and who exercises that right when and in
the manner required by RCW 23B.13.200 through 23B.13.280.

     (C) "Fair value", with respect to a dissenter's shares,  means the value of
the shares  immediately  before the effective  date of the  corporate  action to
which the dissenter  objects,  excluding any  appreciation  or  depreciation  in
anticipation of the corporate action unless exclusion would be inequitable.

     (D)  "Interest"  means  interest from the  effective  date of the corporate
action  until the date of payment,  at the average  rate  currently  paid by the
corporation  on its principal bank loans or, if none, at a rate that is fair and
equitable under all the circumstances.

     (E)  "Record  shareholder"  means  the  person  in whose  name  shares  are
registered in the records of a corporation or the beneficial  owner of shares to
the  extent  of the  rights  granted  by a  nominee  certificate  on file with a
corporation.

     (F) "Beneficial  shareholder" means the person who is a beneficial owner of
shares held in a voting trust or by a nominee as the record shareholder.

     (G)   "Shareholder"   means  the  record   shareholder  or  the  beneficial
shareholder.


23B.13.020 RIGHT TO DISSENT.

     (1) A shareholder  is entitled to dissent from,  and obtain  payment of the
fair value of the  shareholder's  shares in the event of,  any of the  following
corporate actions:

            (a)  Consummation  of a plan of merger to which the corporation is a
      party  (i) if  shareholder  approval  is  required  for the  merger by RCW
      23B.11.030,   23B.11.080,   or  the  articles  of  incorporation  and  the
      shareholder is entitled to vote on the merger,  or (ii) if the corporation
      is a subsidiary that is merged with its parent under RCW 23B.11.040;

            (b)   Consummation  of  a  plan  of  share  exchange  to  which  the
      corporation is a party as the  corporation  whose shares will be acquired,
      if the shareholder is entitled to vote on the plan;

            (c) Consummation of a sale or exchange of all, or substantially all,
      of the  property  of the  corporation  other than in the usual and regular
      course of business,  if the shareholder is entitled to vote on the sale or
      exchange,  including  a sale  in  dissolution,  but not  including  a sale
      pursuant to court order or a sale for cash pursuant to a plan by which all
      or  substantially  all of the net proceeds of the sale will be distributed
      to the shareholders within one year after the date of sale;

            (d) An amendment of the articles of  incorporation  that  materially
      reduces the number of shares owned by the  shareholder  to a fraction of a
      share if the fractional  share so created is to be acquired for cash under
      RCW 23B.06.040; or

            (e) Any corporate action taken pursuant to a shareholder vote to the
      extent the articles of incorporation, bylaws, or a resolution of the board
      of directors  provides that voting or nonvoting  shareholders are entitled
      to dissent and obtain payment for their shares.

         (2) A  shareholder  entitled  to  dissent  and obtain  payment  for the
shareholder's  shares under this chapter may not challenge the corporate  action
creating the  shareholder's  entitlement  unless the action fails to comply with
the  procedural  requirements  imposed  by this  title,  RCW  25.10.900  through
25.10.955,  the articles of incorporation,  or the bylaws, or is fraudulent with
respect to the shareholder or the corporation.


                                      B-1

<PAGE>



         (3) The right of a dissenting shareholder to obtain payment of the fair
value of the shareholder's shares shall terminate upon the occurrence of any one
of the following events:

            (a)  The proposed corporate action is abandoned or rescinded;

            (b)  A court having jurisdiction permanently enjoins or sets aside 
the corporate action; or

            (c)  The shareholder's demand for payment is withdrawn with the 
written consent of the corporation.


23B.13.030 DISSENT OF NOMINEES AND BENEFICIAL OWNERS.

         (1) A record shareholder may assert dissenters' rights as to fewer than
all the shares  registered  in the  shareholder's  name only if the  shareholder
dissents  with  respect to all shares  beneficially  owned by any one person and
notifies  the  corporation  in writing of the name and address of each person on
whose behalf the shareholder asserts dissenters' rights. The rights of a partial
dissenter  under this subsection are determined as if the shares as to which the
dissenter dissents and the dissenter's other shares were registered in the names
of different shareholders.

         (2) A beneficial shareholder may assert dissenters' rights as to shares
held on the beneficial shareholder's behalf only if:

            (a) The beneficial shareholder submits to the corporation the record
      shareholder's  written  consent to the dissent not later than the time the
      beneficial shareholder asserts dissenters' rights; and

            (b) The beneficial shareholder does so with respect to all shares of
      which such  shareholder is the  beneficial  shareholder or over which such
      shareholder has power to direct the vote.


23B.13.200 NOTICE OF DISSENTERS' RIGHTS.

         (1) If proposed corporate action creating  dissenters' rights under RCW
23B.13.020 is submitted to a vote at a shareholders' meeting, the meeting notice
must state that shareholders are or may be entitled to assert dissenters' rights
under this chapter and be accompanied by a copy of this chapter.

         (2)  If  corporate  action  creating   dissenters'   rights  under  RCW
23B.13.020 is taken without a vote of shareholders, the corporation,  within ten
days after  [the]  effective  date of such  corporate  action,  shall  notify in
writing all shareholders  entitled to assert  dissenters' rights that the action
was taken and send them the dissenters' notice described in RCW 23B.13.220.


23B.13.210 NOTICE OF INTENT TO DEMAND PAYMENT.

         (1) If proposed corporate action creating  dissenters' rights under RCW
23B.13.020 is submitted to a vote at a shareholders'  meeting, a shareholder who
wishes to assert  dissenters'  rights must (a) deliver to the corporation before
the vote is taken written notice of the  shareholder's  intent to demand payment
for the  shareholder's  shares if the proposed  action is effected,  and (b) not
vote such shares in favor of the proposed action.

         (2) A shareholder  who does not satisfy the  requirements of subsection
(1) of this section is not entitled to payment for the shareholder's shares 
under this chapter.


23B.13.220 DISSENTERS' NOTICE.

         (1) If proposed corporate action creating  dissenters' rights under RCW
23B.13.020 is authorized  at a  shareholders'  meeting,  the  corporation  shall
deliver a written  dissenters'  notice to all  shareholders  who  satisfied  the
requirements of RCW 23B.13.210.

         (2) The  dissenters'  notice  must be sent  within  ten days  after the
effective date of the corporate action, and must:

            (a)  State  where  the  payment  demand  must be sent and where  and
     when  certificates  for  certificated  shares  must be deposited;

            (b) Inform holders of uncertificated  shares to what extent transfer
      of the shares will be restricted after the payment demand is received;


                                      B-2

<PAGE>


            (c) Supply a form for  demanding  payment that  includes the date of
      the first  announcement  to news media or to  shareholders of the terms of
      the  proposed  corporate  action and  requires  that the person  asserting
      dissenters'  rights certify whether or not the person acquired  beneficial
      ownership of the shares before that date;

            (d) Set a date by which the  corporation  must  receive  the payment
      demand,  which date may not be fewer than  thirty nor more than sixty days
      after the date the notice in subsection  (1) of this section is delivered;
      and

            (e)  Be accompanied by a copy of this chapter.


23B.13.230 DUTY TO DEMAND PAYMENT.

         (1) A shareholder sent a dissenters' notice described in RCW 23B.13.220
must  demand  payment,  certify  whether  the  shareholder  acquired  beneficial
ownership  of the  shares  before  the  date  required  to be set  forth  in the
dissenters'   notice   pursuant  to  RCW   23B.13.220(2)(c),   and  deposit  the
shareholder's certificates in accordance with the terms of the notice.

         (2) The shareholder who demands payment and deposits the  shareholder's
share certificates under subsection (1) of this section retains all other rights
of a shareholder until the proposed corporate action is effected.

         (3)  A  shareholder   who  does  not  demand  payment  or  deposit  the
shareholder's  share  certificates  where required,  each by the date set in the
dissenters'  notice,  is not  entitled to payment for the  shareholder's  shares
under this chapter.


23B.13.240 SHARE RESTRICTIONS.

         (1) The corporation may restrict the transfer of uncertificated  shares
from the date the  demand  for their  payment  is  received  until the  proposed
corporate   action  is  effected  or  the  restriction  is  released  under  RCW
23B.13.260.

         (2)  The  person  for  whom  dissenters'  rights  are  asserted  as  to
uncertificated  shares  retains  all  other  rights of a  shareholder  until the
effective date of the proposed corporate action.


23B.13.250 PAYMENT.

         (1) Except as provided  in RCW  23B.13.270,  within  thirty days of the
later of the effective date of the proposed  corporate  action,  or the date the
payment  demand  is  received,  the  corporation  shall pay each  dissenter  who
complied with RCW 23B.13.230 the amount the corporation estimates to be the fair
value of the shareholder's shares, plus accrued interest.

         (2) The payment must be accompanied by:

            (a) The  corporation's  balance sheet as of the end of a fiscal year
      ending not more than sixteen months before the date of payment,  an income
      statement  for that year, a statement of changes in  shareholders'  equity
      for that year, and the latest available interim financial  statements,  if
      any;

            (b)  An explanation of how the corporation estimated the fair value
      of the shares;

            (c)  An explanation of how the interest was calculated;

            (d)  A statement of the dissenter's right to demand payment under 
     RCW 23B.13.280; and

            (b)  A copy of this chapter.


23B.13.260 FAILURE TO TAKE ACTION.

         (1) If the corporation does not effect the proposed action within sixty
days after the date set for demanding payment and depositing share certificates,
the corporation shall return the deposited certificates and release any transfer
restrictions imposed on uncertificated shares.

         (2) If after returning  deposited  certificates and releasing  transfer
restrictions,  the corporation  wishes to undertake the proposed action, it must
send a new dissenters' notice under RCW 23B.13.220 and repeat the payment demand
procedure.

                                      B-3

<PAGE>



23B.13.270 AFTER-ACQUIRED SHARES.

         (1) A  corporation  may  elect  to  withhold  payment  required  by RCW
23B.13.250 from a dissenter unless the dissenter was the beneficial owner of the
shares  before the date set forth in the  dissenters'  notice as the date of the
first announcement to news media or to shareholders of the terms of the proposed
corporate action.

         (2) To the extent the  corporation  elects to  withhold  payment  under
subsection (1) of this section,  after taking the proposed  corporate action, it
shall estimate the fair value of the shares,  plus accrued  interest,  and shall
pay this amount to each  dissenter who agrees to accept it in full  satisfaction
of the  dissenter's  demand.  The  corporation  shall  send  with  its  offer an
explanation of how it estimated that fair value of the shares, an explanation of
how the interest was  calculated,  and a statement of the  dissenter's  right to
demand payment under RCW 23B.13.280.

23B.13.280 PROCEDURE IF SHAREHOLDER DISSATISFIED WITH PAYMENT OR OFFER.

         (1)  A  dissenter  may  notify  the   corporation  in  writing  of  the
dissenter's own estimate of the fair value of the dissenter's  shares and amount
of  interest  due,  and demand  payment of the  dissenter's  estimate,  less any
payment  under RCW  23B.13.250,  or reject  the  corporation's  offer  under RCW
23B.13.270 and demand payment of the  dissenter's  estimate of the fair value of
the dissenter's shares and interest due, if:

            (a) The dissenter believes that the amount paid under RCW 23B.13.250
      or  offered  under  RCW  23B.13.270  is less  than the  fair  value of the
      dissenter's shares or that the interest due is incorrectly calculated;

            (b) The  corporation  fails to make  payment  under  RCW  23B.13.250
      within sixty days after the date set for demanding payment; or

            (c) The corporation does not effect the proposed action and does not
      return the  deposited  certificates  or release the transfer  restrictions
      imposed on uncertificated  shares within sixty days after the date set for
      demanding payment.

         (2) A dissenter  waives the right to demand  payment under this section
unless the  dissenter  notifies the  corporation  of the  dissenter's  demand in
writing  under  subsection  (1) of this  section  within  thirty  days after the
corporation made or offered payment for the dissenter's shares.


23B.13.300 COURT ACTION.

         (1) If a demand for payment under RCW 23B.13.280 remains unsettled, the
corporation  shall commence a proceeding  within sixty days after  receiving the
payment  demand and petition the court to determine the fair value of the shares
and accrued interest. If the corporation does not commence the proceeding within
the sixty-day period, it shall pay each dissenter whose demand remains unsettled
the amount demanded.

         (2) The corporation shall commence the proceeding in the superior court
of the county where a corporation's principal office, or, if none in this state,
its registered office, is located.  If the corporation is a foreign  corporation
without a registered  office in this state,  it shall commence the proceeding in
the county in this state where the registered office of the domestic corporation
merged  with or whose  shares  were  acquired  by the  foreign  corporation  was
located.

         (3) The corporation shall make all dissenters, whether or not residents
of this state,  whose demands remain unsettled,  parties to the proceeding as in
an action against their shares and all parties must be served with a copy of the
petition.  Nonresidents  may be served by  registered  or  certified  mail or by
publication as provided by law.

         (4)  The  corporation  may  join  as a  party  to  the  proceeding  any
shareholder  who claims to be a dissenter but who has not, in the opinion of the
corporation,  complied  with  the  provisions  of  this  chapter.  If the  court
determines  that such  shareholder  has not complied with the provisions of this
chapter, the shareholder shall be dismissed as a party.

         (5) The  jurisdiction of the court in which the proceeding is commenced
under  subsection  (2) of this section is plenary and  exclusive.  The court may
appoint one or more persons as  appraisers  to receive  evidence  and  recommend
decision on the question of fair value. The appraisers have the powers described
in the order  appointing  them,  or in any amendment to it. The  dissenters  are
entitled to the same discovery rights as parties in other civil proceedings.

                                      B-4

<PAGE>


         (6)  Each  dissenter  made a party to the  proceeding  is  entitled  to
judgment (a) for the amount,  if any, by which the court finds the fair value of
the  dissenter's  shares,  plus  interest,   exceeds  the  amount  paid  by  the
corporation,  or  (b)  for  the  fair  value,  plus  accrued  interest,  of  the
dissenter's  after-acquired shares for which the corporation elected to withhold
payment under RCW 23B.13.270.


23B.13.310 COURT COSTS AND COUNSEL FEES.

         (1) The court in a  proceeding  commenced  under RCW  23B.13.300  shall
determine all costs of the proceeding, including the reasonable compensation and
expenses of appraisers  appointed by the court. The court shall assess the costs
against the corporation,  except that the court may assess the costs against all
or some of the dissenters,  in amounts the court finds equitable,  to the extent
the court finds the dissenters acted  arbitrarily,  vexatiously,  or not in good
faith in demanding payment under RCW 23B.13.280.

         (2) The court may also  assess the fees and  expenses  of  counsel  and
experts for the respective parties, in amounts the court finds equitable:

            (a) Against the corporation and in favor of any or all dissenters if
      the court  finds the  corporation  did not  substantially  comply with the
      requirements of RCW 23B.13.200 through 23B.13.280; or

            (b) Against either the  corporation or a dissenter,  in favor of any
      other party,  if the court finds that the party  against whom the fees and
      expenses are assessed acted arbitrarily, vexatiously, or not in good faith
      with respect to the rights provided by Chapter 23B.13 RCW.

         (3) If the court finds that the  services of counsel for any  dissenter
were of substantial benefit to other dissenters similarly situated, and that the
fees for those  services  should not be assessed  against the  corporation,  the
court may award to these counsel  reasonable  fees to be paid out of the amounts
awarded the dissenters who were benefitted.


                                      B-5


<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS


Item 20.  Indemnification of Directors and Officers

     Article  SIXTH  of  the  Company's  Amended  and  Restated  Certificate  of
Incorporation  and Article VIII of the Company's  Restated  By-Laws provide that
the Company shall, to the fullest extent permitted by Section 14A:3-5 of the New
Jersey Business  Corporation  Act, as the same may be amended and  supplemented,
indemnify any and all corporate agents whom it shall have the power to indemnify
under said section from and against any and all of the expenses, liabilities, or
other matters referred to in or covered by said section, and the indemnification
provided for therein shall not be deemed  exclusive of any other rights to which
those  indemnified  may  be  entitled  under  any  by-law,  agreement,  vote  of
shareholders,  or otherwise, and shall continue as to a person who has ceased to
be a corporate  agent and shall  inure to the  benefit of the heirs,  executors,
administrators,  and personal  representatives of such corporate agent. The term
"corporate  agent" as used therein  shall have the meaning  attributed  to it by
Sections 14A:3-5 and 14A:5-21 of the New Jersey Business  Corporation Act and by
another applicable provision of law.

     Article  SIXTH  of  the  Company's  Amended  and  Restated  Certificate  of
Incorporation  also provides that the personal liability of the directors of the
Company is eliminated to the fullest extent  permitted by subsection  14A:2-7 of
the New  Jersey  Business  Corporation  Act,  as the  same  may be  amended  and
supplemented. The Company presently maintains directors' and officers' liability
insurance  coverage with an aggregate policy limit of $1,000,000 for each policy
year.


Item 21.  Exhibits and Financial Statement Schedules


   (a) Exhibits

    Exhibit No.                   Description of Exhibit
     --------                         ---------------
        2.1       Agreement  and Plan of  Merger,  dated June 20,  1996,  by and
                  among  the  Registrant,   Northwest   Acquisition   Corp.  and
                  Wismer-Martin,   Inc.  (attached  as  Annex  A  to  the  Proxy
                  Statement and Prospectus and incorporated herein by reference;
                  the  Registrant  agrees  to  furnish   supplementally  to  the
                  Commission  upon  request  a copy of any  omitted  exhibit  or
                  schedule).
        5.1       Opinion of Gordon Altman Butowsky Weitzen Shalov & Wein.
        8.1       Opinion of Paine, Hamblen,Coffin, Brooke & Miller with respect
                  to tax matters.
       23.1       Consent of Gordon Altman Butowsky Weitzen Shalov & Wein 
                  (included in Exhibit 5.1).
       23.2       Consent of Paine, Hamblen, Coffin, Brooke & Miller 
                  (included in Exhibit 8.1).
       23.3       Consent of KPMG Peat Marwick LLP.
       23.4       Consent of KPMG Peat Marwick LLP.
       23.5       Consent of BDO Seidman, LLP.
       24.1       Power of Attorney (included on signature page to the 
                  Registration Statement).
       99.1       Wismer-Martin, Inc. Form of Proxy.

   (b) and (c) Not applicable.


Item 22.  Undertakings.

     The undersigned registrant hereby undertakes:

          (1)  That,  for  purposes  of  determining  any  liability  under  the
     Securities  Act of 1933,  each  filing of the  registrant's  annual  report
     pursuant to section 13(a) or section 15(d) of the  Securities  Exchange Act
     of 1934 (and, where applicable,  each filing of any employee benefit plan's
     annual report  pursuant to section 15(d) of the Securities  Exchange Act of
     1934) that is incorporated by reference in the registration statement shall
     be deemed to be a new  registration  statement  relating to the  securities
     offered therein,  and the offering of such securities at that time shall be
     deemed to be the initial bona fide offering thereof.
          (2) That, prior to any public reoffering of the securities  registered
     hereunder  through use of a prospectus  which is part of this  registration
     statement, by any person or party who is deemed to be an underwriter within
     the meaning of Rule  145(c),  the issuer  undertakes  that such  reoffering
     prospectus  will  contain  the  information


                                      II-1

<PAGE>


     called for by the applicable  registration form with respect to reofferings
     by persons who may be deemed  underwriters,  in addition to the information
     called for by the other Items of the applicable form.

          (3) That, every prospectus (i) that is filed pursuant to the paragraph
     (2) immediately  preceding,  or (ii) that purports to meet the requirements
     of section  10(a)(3) of the Act and is used in connection  with an offering
     of securities subject to Rule 415, will be filed as part of an amendment to
     the  registration  statement  and will not be used until such  amendment is
     effective,  and that, for purposes of determining  any liability  under the
     Securities Act of 1933, each such post-effective  amendment shall be deemed
     to be a new  registration  statement  relating  to the  securities  offered
     therein,  and the offering of such  securities at that time shall be deemed
     to be the initial bona fide offering thereof.
          (4) To respond to requests for  information  that is  incorporated  by
     reference into the prospectus  pursuant to Items 4, 10(b), 11 or 13 of this
     Form,  within one business day of receipt of such request,  and to send the
     incorporated  documents by first class mail or other equally  prompt means.
     This includes  information  contained in documents filed  subsequent to the
     effective date of the registration statement through the date of responding
     to the request.
          (5) To supply by means of a  post-effective  amendment all information
     concerning a transaction,  and the company being acquired involved therein,
     that was not the subject of and included in the registration statement when
     it became effective.

     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors,  officers and controlling  persons of the
registrant  pursuant to the  provisions or otherwise,  the  registrant  has been
advised  that in the opinion of the  Securities  and  Exchange  Commission  such
indemnification  is  against  public  policy  as  expressed  in the  Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the registrant of expenses incurred
or paid by a director,  officer or  controlling  person of the registrant in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director, officer, or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.


                                      II-2

<PAGE>


                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the Registrant
has duly caused this  Registration  Statement  to be signed on its behalf by the
undersigned,  thereunto duly  authorized,  in the City of New York, State of New
York, on August 9, 1996.


                                 PHYSICIAN COMPUTER NETWORK, INC.

                                    By:   /s/          JOHN F. MORTELL
                                          --------------------------------------
                                                       John F. Mortell
                                                Executive Vice President and
                                                   Chief Operating Officer

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS,  that each person whose  signature  appears
below  constitutes  and  appoints  Henry  Green,  John F.  Mortell and Thomas F.
Wraback, and each and any one of them, his true and lawful attorneys-in-fact and
agents, with full power of substitution and  resubstitution,  for him and in his
name, place and stead, in any and all capacities,  to sign any or all amendments
(including  post-effective  amendments) to this Registration  Statement,  and to
file the same,  with all exhibits  thereto,  and other  documents in  connection
therewith,  with the  Securities  and Exchange  Commission,  granting  unto said
attorneys-in-fact  and agents,  and each of them, full power and authority to do
and perform each and every act and thing  requisite  and necessary to be done in
and about the  premises,  as fully to all  intents  and  purposes as he might or
could  do  in  person,   hereby   ratifying   and   confirming   all  that  said
attorneys-in-fact  and agents,  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.

<TABLE>
<CAPTION>
               Name                                       Title                                     Date
               ----                                       -----                                     ----

<S>                                                    <C>                                        <C>           
   /s/          Jeffry M. Picower                      Chairman of the Board                      August 9, 1996
   -----------------------------------
                Jeffry M. Picower

   /s/             Henry Green                         President, Chief Executive                 August 9, 1996
   -----------------------------------                   Officer and Director
                   Henry Green                           (Principal Executive Officer)
                                                         

   /s/           John F. Mortell                       Executive Vice President and               August 9, 1996
   -----------------------------------                   Chief Operating Officer
                 John F. Mortell                         (Principal Financial Officer)
                                                         

   /s/         Thomas F. Wraback                       Vice President-- Finance                   August 9, 1996
   -----------------------------------                   (Principal Accounting Officer)
               Thomas F. Wraback                        

   /s/            Jerry Brager                         Director                                   August 9, 1996
   -----------------------------------
                  Jerry Brager

   /s/           Frederick Frank                       Director                                   August 9, 1996
   -----------------------------------
                 Frederick Frank

   /s/         Frederic Greenberg                      Director                                   August 9, 1996
   -----------------------------------
               Frederic Greenberg

   /s/          Richard B. Kelsky                      Director                                   August 9, 1996
   -----------------------------------
                Richard B. Kelsky

</TABLE>

                                      II-3


<PAGE>
===============================================================================







                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    --------



                                    EXHIBITS


                                       TO

                                    FORM S-4



                             REGISTRATION STATEMENT


                                      UNDER


                           THE SECURITIES ACT OF 1933



                                    --------



                        Physician Computer Network, Inc.
             (Exact name of registrant as specified in its charter)




===============================================================================

<PAGE>



                                  EXHIBIT INDEX


    Exhibit No.                     Description of Exhibit
    ----------                      ----------------------

        2.1       Agreement  and Plan of Merger,  dated June 20, 1996,  by and
                   among  the  Registrant,   Northwest  Acquisition  Corp.  and
                   Wismer-Martin,  Inc.  (attached  as  Annex  A to  the  Proxy
                   Statement  and   Prospectus  and   incorporated   herein  by
                   reference;  the Registrant agrees to furnish  supplementally
                   to the Commission upon request a copy of any omitted exhibit
                   or schedule).

        5.1       Opinion of Gordon Altman Butowsky Weitzen Shalov & Wein.

        8.1       Opinion of Paine,  Hamblen,  Coffin, Brooke & Miller with 
                  respect to tax matters.

       23.1       Consent of Gordon Altman Butowsky Weitzen Shalov & Wein 
                  (included in Exhibit 5.1).

       23.2       Consent of Paine, Hamblen, Coffin, Brooke & Miller 
                   (included in Exhibit 8.1).

       23.3       Consent of KPMG Peat Marwick LLP.

       23.4       Consent of KPMG Peat Marwick LLP.

       23.5       Consent of BDO Seidman, LLP.

       24.1       Power of Attorney  (included on signature  page to the  
                   Registration Statement).

       99.1       Wismer-Martin, Inc. Form of Proxy.



           LETTERHEAD OF GORDON ALTMAN BUTOWSKY WEITZEN SHALOV & WEIN


                                                  August 7, 1996

Physician Computer Network, Inc.
1200 The American Road
Morris Plains, New Jersey 07950

          Re: Registration Statement on Form S-4

Ladies and Gentlemen:

     We have acted as counsel to Physician Computer Network,  Inc., a New Jersey
corporation  (the  "Company"  or "PCN"),  in  connection  with the  merger  (the
"Merger") of Northwest  Acquisition  Corp.,  a Washington  corporation  ("Merger
Sub"),  which  is a  wholly-  owned  subsidiary  of the  Company,  with and into
Wismer-Martin, Inc., a Washington corporation ("Wismer-Martin"),  pursuant to an
Agreement  and Plan of  Merger,  dated as of June 20,  1996,  by and  among  the
Company, Merger Sub and Wismer-Martin (the "Merger Agreement") and the Company's
Registration  Statement on Form S-4 under the Securities Act of 1933, as amended
(the  "Act"),  relating to the  registration  of up to  1,450,000  shares of PCN
Common Stock, par value $.01 ("the "Merger Stock"), to be issued pursuant to the
Merger Agreement (such Registration  Statement,  including all exhibits thereto,
in the form declared  effective by the Securities and Exchange  Commission,  the
"Registration  Statement").  Capitalized  terms not otherwise defined herein are
defined as set forth in the Merger Agreement.

     In connection with this opinion, we have examined the following records,
documents, instruments and certificates:

     (i)  the Amended and Restated Certificate of Incorporation of the Company,
          as currently in effect;

     (ii) the By-Laws of the Company;

     (iii) the Merger Agreement; and

     (iv) such other  documents as we have deemed  necessary or appropriate as a
          basis for the opinions set forth below.

     In our examination,  we have assumed the genuineness of all signatures, the
legal capacity of natural persons,  the authenticity of all documents  submitted
to us as  originals,  the  conformity  to original  documents  of all  documents
submitted to us as certified or photostatic  copies and the  authenticity of the
originals of such copies.  As to any facts material to this opinion which we did
not  independently  establish  or verify, we have  relied


<PAGE>

Physicial Computer Network, Inc.
August  7, 1996
Page 2

upon statements and representations of officers and other representations of the
Company and others.

     Based  upon and  subject  to the  foregoing,  and  further  subject  to the
assumptions and  qualifications set forth below, it is our opinion that when (i)
the  Registration  Statement  has  become  effective  under the Act and (ii) the
Merger  Stock  has  been  issued  in  accordance  with the  terms of the  Merger
Agreement,  as it may be amended  form time to time,  the  Merger  Stock will be
validly issued, fully paid and non-assessable.

     We are members of the Bar of the State of New York and are not  licensed or
admitted to practice  law in any other  jurisdiction,  and we express no opinion
with respect to the laws of any other  jurisdiction other than New York, the New
Jersey  Business  Corporation  Act and the Federal  law of the United  States of
America.

     We are  furnishing  this  opinion  to you  solely  in  connection  with the
Registration Statement. This opinion is solely for your benefit and is not to be
used,  circulated,  quoted or  otherwise  referred  to for any other  purpose or
relied upon by any other person  without our express  written  permission.  This
opinion is based and relies on the current  status of the law, and is subject in
all  respects  to,  and  may be  limited  by,  further  rules,  regulations  and
legislation,  as well as developing  case law. We do not undertake to notify any
person of changes in facts or law occurring or coming to our attention after the
delivery of this opinion.

     We hereby  consent  to the  filing of this  opinion  as an  exhibit  to the
Registration Statement and to the reference to our firm under the caption "Legal
Opinion" in the prospectus forming part of the Registration Statement. In giving
this consent, we do not thereby admit that we are within the category of persons
whose  consent  is  required  under  Section  7 of  the  Act or  the  rules  and
regulations of the Commission thereunder.

                                             Very truly yours,

                                             /s/ GORDON ALTMAN BUTOWSKY
                                             WEITZEN SHALOV & WEIN



              LETTERHEAD OF PAINE, HAMBLEN, COFFIN, BROOKE & MILLER




                                                  August 7, 1996


Wismer-Martin, Inc.
12828 N. Newport Highway
Mead, Washington 99021


     RE:  Certain Federal Income Tax Consequences as a Result of
          the Merger of Northwest Acquisition Corp., a wholly-owned
          subsidiary of Physician Computer Network, Inc., into
          Wismer-Martin, Inc.

Ladies and Gentlemen:

     We have acted as counsel to Wismer-Martin, Inc., a Washington corporation
("Wismer-Martin"), in connection with the proposed merger (the "Merger") of
Northwest Acquisition Corp., a Washington corporation ("Merger Sub"), with and
into Wismer-Martin pursuant to the terms of the Agreement and Plan of Merger
dated June 20, 1996 (the "Merger Agreement") among Wismer-Martin, Merger Sub and
Physician Computer Network, Inc., a New Jersey corporation ("PCN"). We
understand that Merger Sub is a wholly-owned subsidiary of PCN which has been
recently organized for the sole purpose of effecting the Merger. Capitalized
terms used herein but not otherwise defined herein shall have the meanings
assigned to such terms in the Merger Agreement.

     Pursuant to the terms of the Merger Agreement, Merger Sub will be merged
under the Washington Business Corporation Act ("WBCA") with and into
Wismer-Martin, with Wismer-Martin being the surviving corporation, and each
share of Common Stock of Wismer-Martin ("Wismer-Martin Common Stock"), $.001 par
value per share, outstanding at the Effective Time of the Merger (except those
held


<PAGE>


Wismer-Martin, Inc
Page - 2


by Wismer-Martin shareholders who validly perfect dissenters' rights under the
WBCA) will be converted into the right to receive, unless PCN exercises the All
Cash Option referred to below, (i) such number of shares of Common Stock of PCN
("PCN Common Stock"), $.01 par value per share, as determined in accordance with
the terms of the Merger Agreement (the "Stock Consideration") (but with a cash
payment, in lieu of any fractional share interest of PCN Common Stock that would
otherwise have been received, as determined in accordance with the terms of the
Merger Agreement) and/or (ii) such amount in cash as determined in accordance
with the terms of the Merger Agreement (the "Cash Consideration"). Under the
terms of the Merger Agreement, however, PCN also has an All Cash Option pursuant
to which, in certain circumstances and at PCN's option, the consideration to be
received by the holders of Wismer-Martin Common Stock will be, in lieu of the
Stock Consideration and Cash Consideration referred to above, such amount
entirely in cash as determined in accordance with the terms of the Merger
Agreement. Pursuant to the terms of the Merger Agreement, each share of capital
stock of Merger Sub outstanding at the Effective Time of the Merger will be
converted into one share of Common Stock of the surviving corporation, par value
$.001 per share.

     The terms of the Merger are more fully described in the Registration
Statement on Form S-4 (the "Registration Statement") of PCN (containing the
Proxy Statement and Prospectus of PCN and Wismer-Martin) relating to the Merger
which is being filed with the Securities and Exchange Commission on or about the
date hereof.

     In rendering this opinion, we have reviewed the following:

     (a) the Merger Agreement;

     (b) the Registration Statement;

     (c) Wismer-Martin's Articles of Incorporation;

     (d) Wismer-Martin's Bylaws;

     (e) the representation letters of (i) Wismer-Martin and Ronald L. Holden
("Holden") and (ii) Merger Sub and PCN; and

     (f) such other documents and information as we have deemed necessary for
purposes of rendering this opinion.

     In rendering this opinion, we have assumed the following:

     (i) the genuineness of all signatures, the authenticity of all documents
submitted to us as originals, and the conformity to authentic originals of all
documents submitted to us as copies;


<PAGE>


Wismer-Martin, Inc
Page - 3


     (ii) the requisite corporate power and authority of each party thereto to
execute, deliver and perform the Merger Agreement and to consummate the
transactions contemplated thereby;

     (iii) the due authorization, execution and delivery of the Merger Agreement
by each party thereto and the due authorization by each party thereto of the
transactions contemplated thereby;

     (iv) the Merger Agreement constitutes the legal, valid and binding
obligation of, and is enforceable in accordance with its terms against, each
party thereto; and

     (v) the Merger is effected in accordance with the terms of the Merger
Agreement.

     In addition, we have relied, as to certain matters material to the opinions
set forth below, solely upon (a) representations of Wismer-Martin, Holden,
Merger Sub and PCN contained in the representation letters referred to above;
(b) representations and warranties of Wismer-Martin, Merger Sub and PCN
contained in the Merger Agreement; and (c) the information contained in the
Registration Statement. We have assumed that such representations,
representations and warranties, and information are true, correct, and complete;
and we have not made any independent review, investigation or verification
thereof.

     Moreover, the opinions set forth below are further specifically limited to
the following circumstances (the "Limited Circumstances"):

     (i) the All Cash Option is not exercised; and

     (ii)(a) the number of shares of Wismer-Martin Common Stock for which
dissenters' rights are exercised, in the aggregate, do not exceed 2.5% of the
Wismer-Martin Common Stock outstanding at the Effective Time of the Merger and
(b) the amount per share received by Wismer-Martin shareholders exercising their
dissenters' rights does not exceed the value of the consideration that they
would otherwise receive pursuant to the terms of the Merger Agreement.

     Based upon and subject to the foregoing qualifications (including without
limitation the Limited Circumstances) and the additional qualifications set
forth hereinafter, we are of the opinion that:

     1. The Merger will constitute a reorganization for federal income tax
purposes as defined in Section 368(a) (specifically subsections (1)(A) and
(2)(E) thereof) of the Internal Revenue Code of 1986, as amended (the "Code").


<PAGE>


Wismer-Martin, Inc
Page - 4


     2. Wismer-Martin, Merger Sub and PCN will each be a party to the
reorganization as defined by Section 368(b) of the Code.

     3. The following federal income tax consequences will result from the
Merger:

          a. None of Wismer-Martin, Merger Sub or PCN will recognize any gain or
loss as a result of the Merger;

          b. Except for any Cash Consideration received and cash received in
lieu of fractional share interests, a holder of shares of Wismer-Martin Common
Stock who exchanges such shares for shares of PCN Common Stock will not
recognize any gain or loss upon such exchange;

          c. A holder who receives Cash Consideration in the Merger will
recognize gain equal to the lesser of (x) the excess (if any) of (1) the Market
Price of the PCN Common Stock plus the amount of Cash Consideration received by
such holder in the Merger, over (2) such holder's tax basis in the shares of the
Wismer-Martin Common Stock tendered therefor, and (y) the amount of Cash
Consideration received by the holder in the Merger. Such gain will be long-term
capital gain provided that the holder has held the Wismer-Martin Common Stock as
a capital asset as of the Effective Time and for more than one year. No loss
shall be recognized by any holder as a result of such receipt of Cash
Consideration in the Merger;

          d. The aggregate adjusted tax basis of the shares of PCN Common Stock
received in such exchange will be equal to a holder's aggregate adjusted tax
basis in the shares of Wismer- Martin Common Stock surrendered therefor (i)
decreased by the amount of Cash Consideration received by such holder in the
Merger and (ii) increased by the amount of gain recognized by such holder in the
Merger;

          e. If the shares of Wismer-Martin Common Stock were held as a capital
asset at the Effective Time, the holding period of the shares of PCN Common
Stock received in the Merger will include the holding period of the shares of
Wismer-Martin Common Stock exchanged therefor; and

          f. A holder of shares of Wismer-Martin Common Stock who receives cash
in the Merger in lieu of a fractional share interest of PCN Common Stock will be
treated as if such fractional share interest of PCN Common Stock was distributed
to such holder and then redeemed by PCN for cash. The deemed redemption will be
treated as a distribution in full payment in exchange for the fractional share
interest of the PCN Common Stock deemed received by the holder under Section
302(a) of the Code. Accordingly, such


<PAGE>


Wismer-Martin, Inc
Page - 5


holder will recognize a gain or loss equal to the difference between the amount
of cash received and the portion of such holder's adjusted tax basis in the
shares of Wismer-Martin Common Stock allocable to the fractional share interest
of PCN Common Stock. The gain or loss will be long-term capital gain or loss
provided that the shares of Wismer-Martin Common Stock deemed surrendered for
such fractional share interest of PCN Common Stock were held as a capital asset
at the Effective Time and for more than one year.

     This opinion letter is limited to the opinions specifically expressed
herein, and no additional opinions are to be implied or inferred. Without
limiting the generality of the foregoing, (i) the opinions expressed herein are
limited to the federal income tax matters with respect to the parties
specifically set forth above, and we express no opinion as to any other federal
income tax matters, as to any other parties, or as to any State, local, foreign
or other tax law matters, and (ii) the opinions expressed herein are
specifically based upon, and/or specifically limited by or to, (a) the
assumptions set forth herein, (b) the representations, representations and
warranties, and information upon which we have relied, (c) the Limited
Circumstances, and (d) the other qualifications set forth herein, and we express
no opinion as to any circumstances other than the ones referred to in (a)
through (d) immediately above.

     In addition, the opinions set forth above do not address any federal income
tax matters applicable to the holders of Wismer-Martin Common Stock who
exercise their dissenters' rights, entitling them to receive cash for their
shares of Wismer-Martin Common Stock in lieu of the consideration that they
would otherwise receive pursuant to the terms of the Merger Agreement.

     Moreover, the federal income tax matters set forth above are ones of
general applicability only and may not necessarily apply to, or cover all
possible relevant aspects of the federal income tax matters applicable to,
particular holders of Wismer-Martin Common Stock in light of their personal
circumstances, including without limitation their being in categories of
shareholders who may be subject to special rules (such as Wismer-Martin
shareholders who hold shares of Wismer-Martin Common Stock by virtue of being
current or former employees of Wismer-Martin and/or holders of Wismer-Martin
options, and dealers in securities).

     The opinions set forth above are based upon current law as contained in the
Code, the regulations promulgated thereunder, the published administrative
interpretations thereof, and the published court decisions as of this date.


<PAGE>


Wismer-Martin, Inc
Page - 6


     The Internal Revenue Service has not promulgated regulations or published
administrative interpretations with respect to various provisions of the Code
relating to reorganizations. None of Wismer-Martin, Merger Sub or PCN have
requested a ruling from the Internal Revenue Service in connection with the
Merger. This opinion letter is neither binding upon the Internal Revenue Service
nor would it preclude the Internal Revenue Service from adopting a contrary
position. There is no assurance that the Internal Revenue Service will not
successfully contest some or all of the conclusions contained in the opinions
set forth above.

     This opinion letter is given as of the date hereof and imposes no
obligation upon us to update this opinion letter. We specifically disclaim any
undertaking or obligation to advise the addressees hereof or any other person of
any facts or circumstances that may hereafter be brought to our attention or any
change in laws that may hereafter occur which may alter or affect the opinions
set forth above. We note, however, that the Merger Agreement contemplates that,
as a condition to the consummation of the Merger, we render an additional
opinion letter as of the Effective Time of the Merger to the same effect as this
opinion letter. Our ability to render such an additional opinion letter assumes,
among other things, that (i) no legislative, judicial or administrative changes
or interpretations occur prior to the Effective Time that would affect our
ability to render such additional opinion letter at that time and (ii) we
receive from Wismer-Martin and Holden and from Merger Sub and PCN representation
letters as of the Effective Time to the same effect as their representation
letters delivered in connection with this opinion letter.

     This opinion letter is for the information of Wismer-Martin and the
shareholders of Wismer-Martin solely in connection with the Merger. This opinion
letter may not be (a) relied upon by such addressees for any other purpose, (b)
relied upon by any other person, or (c) filed with any governmental authority or
agency or otherwise divulged or delivered to any other person without our prior
express written consent. Notwithstanding the foregoing, we hereby consent to the
filing of this opinion letter as an Exhibit to the Registration Statement and to
the references to our firm in the section of the Registration Statement entitled
"Certain Federal Income Tax Consequences of the Merger". In giving this consent,
we do not admit that we are in the category of persons whose consent is required
by Section 7 of the Securities Act of 1933, as amended, or the regulations
promulgated thereunder.


                                      Very truly yours,

                                      PAINE, HAMBLEN, COFFIN, BROOKE
                                               & MILLER LLP

                                      By:  /s/ Lawrence R. Small


                                                                    EXHIBIT 23.3


                        Independent Accountants' Consent





The Board of Directors
Physician Computer Network, Inc.



We consent to the use of our report incorporated herein by reference and to the
reference to our firm under the heading "Experts" in the proxy and prospectus.


                                   KPMG Peat Marwick LLP


Short Hills, New Jersey
August 8, 1996


                                                                    EXHIBIT 23.4


                        Independent Accountants' Consent





The Board of Directors
Physician Computer Network, Inc.:



We consent to incorporation  by reference in the registration  statement on Form
S-4 of  Physician  Computer  Network,  Inc. of our report  dated July 19,  1996,
relating to the balance sheet comprised of certain assets and liabilities of the
medical and commercial divisions of CUSA Technologies, Inc. as of March 31, 1996
and the  related  statements  of  operations  and cash flows for the nine- month
period  then ended  which  report  appears on Form 8-K/A of  Physician  Computer
Network, Inc. dated August 7, 1996 (July 2, 1996) .

We also consent to the reference to our firm under the heading "Experts" in the
proxy and prospectus.


                                   KPMG Peat Marwick LLP


Salt Lake City, Utah
August 8, 1996




                                                                    EXHIBIT 23.5


               Consent of Independent Certified Public Accountants





Wismer*Martin, Inc.
Mead, Washington



We hereby consent to the use in the Prospectus constituting a part of this
Registration Statement of our report dated September 26, 1995, relating to the
consolidated financial statements of Wismer*Martin, Inc. which is incorporated
by reference in that Prospectus.

We also consent to the reference to us under the captions "Selected Consolidated
Financial Information" and "Experts" incorporated by reference in the
Prospectus.


                                   BDO Seidman LLP


Spokane, Washington
August 8, 1996






                               WISMER-MARTIN, INC.
                 12828 N. Newport Highway Mead, Washington 99021

                 THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD
                       OF DIRECTORS OF WISMER-MARTIN, INC.

The undersigned  hereby appoints Ronald Holden and John Perez, and each of them,
with full power of  substitution,  as  Proxies  and  hereby  authorizes  them to
represent  and vote as designated  below all of the shares of common stock,  par
value  $.001  per  share,  of  Wismer-Martin,  Inc.,  a  Washington  corporation
("Wismer-Martin"),  which the  undersigned  is  entitled  to vote at the Special
Meeting (the "Special Meeting") of the shareholders of Wismer-Martin, to be held
at the  executive  offices of  Wismer-Martin,  12828 N. Newport  Highway,  Mead,
Washington  99021,  on September 9, 1996, at 9:00 a.m.,  local time,  and at any
adjournments  or  postponements  thereof,  with the same force and effect as the
undersigned could do if personally present thereat:

1.  Proposal to approve a Plan of Merger  pursuant to an  Agreement  and Plan of
Merger,  dated June 20, 1996 (the "Merger  Agreement"),  by and among  Physician
Computer Network, Inc., a New Jersey corporation ("PCN"),  Northwest Acquisition
Corp.,a  wholly-owned  subsidiary  of  PCN  ("Merger  Sub")  and  Wismer-Martin,
pursuant to which:  (a) Merger Sub will merge with and into  Wismer-  Martin and
Wismer-Martin  will be the  surviving  corporation  and  become  a  wholly-owned
subsidiary  of PCN (the  "Merger")  and (b) each share of  Wismer-Martin  Common
Stock,  par value $.001 per share ("Wismer-  Martin Common  Stock"),  issued and
outstanding  immediately  prior to the  effective  time of the  Merger  shall be
converted  into the right to receive a specified  amount of cash and a specified
number of shares of PCN's Common Stock,  par value $.01 per share, as more fully
described in the accompanying Proxy Statement and Prospectus.

         |_| For           |_| Against      |_| Abstain

                             Continued on Other Side



2. In their  discretion,  the  Proxies  are  authorized  to vote upon such other
business as may properly come before the Special Meeting or any  adjournments or
postponements thereof.

THIS PROXY, WHEN PROPERLY EXECUTED,  WILL BE VOTED IN THE MANNER DIRECTED HEREIN
BY THE  UNDERSIGNED.  IF NO  DIRECTION IS MADE,  THE PROXIES  SHALL VOTE FOR THE
PROPOSAL TO APPROVE THE PLAN OF MERGER.


PLEASE FILL IN DATE AND SIGN THIS PROXY AND RETURN IT IN THE ENCLOSED ENVELOPE.

Shareholder's  signature should agree with name appearing on mailing label. When
signing as joint  tenants,  all parties to the joint  tenancy  shall sign.  When
signing  the  proxy  as  attorney-in-fact,   personal  representative,  trustee,
guardian, corporate officer, or other authorized representative, please indicate
capacity in which you are signing.


________________________________________________________________________________
Signature                                                                 (Date)


________________________________________________________________________________
Signature                                                                 (Date)




© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission