SIEMENS AKTIENGESELLSCHAFT
SC 13D, 2000-03-23
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<PAGE>   1

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

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


                                 SCHEDULE 13D
                                (RULE 13D-101)

           INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
          TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                RULE 13d-2(a)

                       ENTEX INFORMATION SERVICES, INC.
                               (Name of Issuer)


                   COMMON STOCK, PAR VALUE $.0001 PER SHARE
                        (Title of Class of Securities)

                                  293818-100
                                (CUSIP Number)

                              KENNETH R. MEYERS
                             SIEMENS CORPORATION
                             153 EAST 53RD STREET
                           NEW YORK, NEW YORK 10022
                                (212) 258-4000
                (Name, Address and Telephone Number of Person
              Authorized to Receive Notices and Communications)


                                   COPY TO:

                                JOHN A. HEALY
                      CLIFFORD CHANCE ROGERS & WELLS LLP
                               200 PARK AVENUE
                           NEW YORK, NEW YORK 10166

                                MARCH 13, 2000
           (Date of Event which Requires Filing of this Statement)


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


                         (Continued on following pages)

                             (Page 1 of 108 Pages)


<PAGE>   2
===============================================================================
  1.    NAME OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON (ENTITIES ONLY)
        SIEMENS AKTIENGESELLSCHAFT
===============================================================================
  2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                (a) / /
                                                                (b) (CHECK MARK)
===============================================================================
  3.    SEC USE ONLY

===============================================================================
  4.    SOURCE OF FUNDS
        WC
===============================================================================
  5.    CHECK BOX IF DISCLOSURE OF LEGAL  PROCEEDINGS IS REQUIRED  PURSUANT TO
        ITEM 2(d) OR 2(e)
                                                                    / /
===============================================================================
  6.    CITIZENSHIP OR PLACE OF ORGANIZATION

        FEDERAL REPUBLIC OF GERMANY
===============================================================================
                  7.   SOLE VOTING POWER
   NUMBER OF
     SHARES            0
  BENEFICIALLY
    OWNED BY
      EACH
   REPORTING
  PERSON WITH
                 ==============================================================
                  8.   SHARED VOTING POWER
                       24,719,596

                 ==============================================================
                  9.   SOLE DISPOSITIVE POWER
                       0

                 ==============================================================
                  10.  SHARED DISPOSITIVE POWER
                       24,719,596

===============================================================================
  11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        24,719,596
===============================================================================
  12.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                    / /
===============================================================================
  13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        75.3%
===============================================================================
  14.   TYPE OF REPORTING PERSON
        Co
===============================================================================





                                       2
<PAGE>   3
===============================================================================
  1.    NAME OF REPORTING PERSONS
        I.R.S. IDENTIFICATION NOS. OF ABOVE PERSON (ENTITIES ONLY)
        EMILIA ACQUISITION CORP.
===============================================================================
  2.    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                (a) / /
                                                                (b) (CHECK MARK)
===============================================================================
  3.    SEC USE ONLY

===============================================================================
  4.    SOURCE OF FUNDS
        AF
===============================================================================
  5.    CHECK BOX IF DISCLOSURE OF LEGAL  PROCEEDINGS IS REQUIRED  PURSUANT TO
        ITEM 2(d) OR 2(e)
                                                                     / /
===============================================================================
  6.    CITIZENSHIP OR PLACE OF ORGANIZATION

        DELAWARE
===============================================================================
                  7.   SOLE VOTING POWER
   NUMBER OF
     SHARES            0
  BENEFICIALLY
    OWNED BY
      EACH
   REPORTING
  PERSON WITH
                 ==============================================================
                  8.   SHARED VOTING POWER
                       24,719,596

                 ==============================================================
                  9.   SOLE DISPOSITIVE POWER
                       0
                 ==============================================================
                  10.  SHARED DISPOSITIVE POWER
                       24,719,596
===============================================================================
  11.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        24,719,596
===============================================================================
  12.   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                    / /
===============================================================================
  13.   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        75.3%
===============================================================================
  14.   TYPE OF REPORTING PERSON
        CO
===============================================================================






                                       3
<PAGE>   4
ITEM 1.           SECURITIES AND THE ISSUER

      This statement on Schedule 13D relates to shares of common stock, par
value $.0001 per share (the "Common Stock"), of ENTEX Information Services,
Inc., a Delaware corporation (the "Company"), with its principal executive
offices at 6 International Drive, Rye Brook, New York 10573.

ITEM 2.           IDENTITY AND BACKGROUND

      This statement is being filed by Siemens Aktiengesellschaft, a corporation
organized under the laws of the Federal Republic of Germany ("Siemens AG") and
Emilia Acquisition Corp., a corporation organized under the laws of the State of
Delaware ("Acquisition"). Acquisition is an indirect wholly owned subsidiary of
Siemens AG and a direct wholly owned subsidiary of Siemens Corporation, a
corporation organized under the laws of the State of Delaware ("Siemens").

      Siemens AG has its principal office at Wittelsbacherplatz 2, D-80333
Munich, Federal Republic of Germany. Siemens AG's principal business is the
design, development, manufacture and marketing of a wide variety of electrical
and electronics systems.

      Siemens and Acquisition each have their principal office at 153 East 53rd
Street, New York, New York 10022. Siemens is a wholly owned subsidiary of
Siemens AG. Siemens serves as the holding company for the businesses of Siemens
AG in the United States, and is responsible for developing, coordinating and
maintaining the overall business strategy of Siemens AG in the United States.

      Acquisition was organized for the purpose of effecting the merger and
related transactions as described in Item 4 below. Other than in connection with
these transactions, Acquisition has not engaged in any activities and it has no
material assets or liabilities. Acquisition is filing this statement because it
may be deemed to be the beneficial owner of the shares of Common Stock subject
to the Call Option described in Item 4 below.

      The directors and executive officers of Siemens AG, Siemens and
Acquisition are named on Schedules I, II and III, respectively, attached hereto.
Schedules I, II and III set forth the following information with respect to each
such person:

i.       name;

ii.      business address (or residence address where indicated);

iii.     present principal occupation or employment and the name, principal
         business and address of any corporation or other organization in which
         such employment is conducted; and

iv.      citizenship.


      During the last five years, none of Siemens AG, Siemens or Acquisition,
nor to the knowledge of any of them, any person named in Schedule I, II or III
attached hereto, has been (a) convicted in a criminal proceeding (excluding
traffic violations or similar misdemeanors) or (b) a party to a civil proceeding
of a judicial or administrative body of competent jurisdiction and as a result
of such proceeding was or is subject to a judgment, decree or final order
enjoining future violations of, or prohibiting or mandating activities subject
to, federal or state securities laws or finding any violation with respect to
such laws.





                                       4
<PAGE>   5
ITEM 3.           SOURCE AND AMOUNT OF FUNDS AND OTHER CONSIDERATION

      The maximum amount that will be required to fund the payments required to
be made to the Company's stockholders pursuant to the transactions described in
Item 4 is $105 million, which amount is subject to a number of adjustments. The
amounts payable to the Company's stockholders are in addition to the amount that
may be required to be paid to the holders of the Company's debt securities and
other obligations.

ITEM 4.           PURPOSE OF THE TRANSACTION

      Siemens, Acquisition and the Company have entered into an Agreement and
Plan of Merger, dated as of March 13, 2000 (the "Merger Agreement"), pursuant to
which the Company has agreed to consummate the merger (the "Merger") of
Acquisition with and into the Company. The Merger is subject to certain
conditions including the expiration or early termination of the waiting period
under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended.

      Siemens, through Acquisition, will acquire in the Merger all of the
outstanding Common Stock of the Company for an aggregate cash purchase price of
$105 million less the following deductions (the "Purchase Price"), without
duplication:

         (i)      the amount by which the Company's current assets less total
                  liabilities at the Measurement Date (as defined below) are
                  less than the Company's current assets less total liabilities
                  at September 26, 1999;

         (ii)     the expenses of the Company in connection with the Merger,
                  including legal and financial advisor fees and expenses and
                  bonus, severance and additional compensation costs;

         (iii)    the $12.5 million premium which will be payable in connection
                  with the redemption of the Company's 12-1/2% Senior
                  Subordinated Notes due 2006 (the "Notes"), issued and
                  outstanding pursuant to the Indenture dated July 29, 1998 (the
                  "Notes Indenture") among the Company, the Subsidiary
                  Guarantors (as defined therein) and Marine Midland, N.A., as
                  trustee, as the Notes Indenture has been amended and
                  supplemented from time to time; and

         (iv)     an amount equal to $32.2 million less the book value of the
                  Company's 5.5% Convertible Subordinated Debentures due 2007,
                  issued and outstanding pursuant to the Indenture dated March
                  18, 1987, as supplemented, between Businessland, Inc. and
                  Security Pacific National Bank, as of the Measurement Date. It
                  is estimated that the deduction in this clause (iv) will be
                  approximately $12.0 million.

      The first $20.0 million (the "Indemnity Amount") of the Purchase Price
will be deposited into an interest-bearing escrow fund pursuant to an Escrow
Agreement, to be entered into on the Measurement Date (the "Escrow Agreement"),
among the Company, Siemens, ChaseMellon Shareholder Services, L.L.C., as the
escrow agent, and Dort A. Cameron, III, the Chairman and controlling stockholder
of the Company, in his capacity as the stockholders' representative. The
Indemnity Amount shall be held and disbursed by the escrow agent to satisfy any
indemnification claims by Siemens relating to breaches of any representations,
warranties or covenants of the Company contained in the Merger Agreement. Any
portion of the Indemnity Amount not utilized for such purposes (net of
escrow-related expenses) will be paid to the former stockholders of the Company
eighteen months following the Measurement Date, except to the extent of any
unresolved indemnification claims as of such date which remaining amounts, if
any, shall be distributed following the resolution of the then unresolved claim.





                                       5
<PAGE>   6
      The next $20.0 million (the "Tax Escrow Amount") of the Purchase Price, if
any, will be deposited into an interest-bearing escrow fund pursuant to a Tax
Escrow Agreement, to be entered into on the Measurement Date (the "Tax Escrow
Agreement"), among the Company, Siemens, ChaseMellon Shareholder Services,
L.L.C., as the tax escrow agent, and Dort A. Cameron, III, in his capacity as
the stockholders' representative. The funds deposited with the tax escrow agent
pursuant to the Tax Escrow Agreement are intended to provide Siemens with
indemnification for any tax liabilities and related expenses relating to the
Company's 1994, 1995 and 1996 fiscal years. Any portion of the Tax Escrow Amount
not utilized for such purposes (net of certain escrow-related expenses) will be
paid to the former stockholders of the Company upon receipt of a refund
currently pending before the IRS with respect to these tax years or other
resolution of such tax matters. While the timing of the refund or other
definitive resolution of these tax matters cannot be determined, it is not
anticipated to occur prior to June 30, 2000.

      The remainder of the Purchase Price, if any (after a $500,000 reserve that
may be utilized by Dort A. Cameron, III for expenses in his capacity as
stockholders' representative), will be released to the former stockholders of
the Company promptly following the later of the resolution of the Closing
Statement (as defined below) or the effective time of the Merger.

      Concurrently with the execution of the Merger Agreement, pursuant to a
Stockholders Agreement, dated as of March 13, 2000 (the "Stockholders
Agreement"), by and among Dort A. Cameron, III, Entex Associates L.P., an
affiliate of Mr. Cameron, and John A. McKenna, Jr., the Chief Executive Officer
and a director of the Company (collectively, the "Principal Stockholders"),
Siemens and Acquisition, the Principal Stockholders, among other things, granted
Acquisition an exclusive option (the "Call Option) to acquire 24,719,596 shares
of the Common Stock in the aggregate (representing approximately 75.3% of the
outstanding shares of Common Stock), exercisable at any time, at the Purchase
Price (payable at the same time(s) other stockholders of the Company receive
their consideration). In addition, the Principal Stockholders have received an
undertaking from Acquisition to purchase their shares, at their option (the "Put
Option"; and together with the Call Option, the "Options"), for the Purchase
Price if (i) any review by the staff of the Securities Exchange Commission of
the Company's Information Statement on Schedule 14C to be filed in connection
with the Merger has not been completed by the 12th day after the first filing of
that Information Statement and (ii) all other conditions to the consummation of
the Merger are then satisfied.

      If either Option is exercised, the "Measurement Date" will be the date
shares of the Common Stock are purchased pursuant to such exercise. If neither
Option is exercised, the "Measurement Date" will be the effective time of the
Merger, which will occur promptly upon satisfaction of all of the conditions to
the Merger contained in the Merger Agreement. According to information provided
by the Company, holders of approximately 6,461,944 shares of Common Stock are
subject to drag-along obligations exercisable by Mr. Cameron. If either the Call
Option or the Put Option is exercised, Mr. Cameron intends to exercise his
drag-along rights, thereby requiring the holders of such shares to sell such
shares to Acquisition on the same terms as his sale, including purchase price
and timing of receipt of payment. If all such shares of Common Stock are
purchased by Acquisition as a result of an Option exercise, Acquisition will
acquire approximately 31,180,540 shares of Common Stock, representing
approximately 95.02% of the outstanding shares of Common Stock.

      In addition, the Merger Agreement provides that, promptly upon the
purchase of any Common Stock by Acquisition pursuant to the terms of the
Stockholders Agreement and from time to time thereafter so long as Acquisition,
Siemens and Siemens' other direct or indirect wholly-owned subsidiaries,
collectively, continue to hold shares of the Common Stock in an amount at least
equal to a majority of the outstanding voting power of the Company's capital
stock, Siemens shall be entitled to designate such number of directors (the
"Siemens Designees"), rounded up to the next whole number, on the Company's
Board of Directors, the board of directors of each subsidiary of the Company and
each standing committee of such boards as is equal to the product of the total
number of directors on the







                                       6
<PAGE>   7
Company's Board of Directors, the board of directors of each such subsidiary and
each such committee (determined after giving effect to the directors elected
pursuant to this sentence), respectively, multiplied by the percentage that the
aggregate number of shares of Common Stock beneficially owned by Siemens or its
wholly owned subsidiaries bears to the total number of shares of Common Stock
then outstanding.

      The Company has agreed, upon request of Siemens, to promptly take all
actions necessary to cause the Siemens Designees to be so elected, including, if
necessary, increasing the size of the Board of Directors of the Company, the
board of directors of each such subsidiary and each standing committee thereof
and/or using its best efforts to obtain the resignations of one or more existing
directors of the Company or any such subsidiary; provided, however, that prior
to the effective time of the Merger, the Company's Board of Directors and the
board of directors of each such subsidiary and each standing committee thereof
shall contain at least two members who are neither officers, directors nor
designees of Siemens.

      Pursuant to the terms of the Merger Agreement, within thirty days
following the Measurement Date, Siemens will deliver to Mr. Cameron, in his
capacity as the stockholders' representative, a closing statement (the "Closing
Statement") setting forth the calculation of the Purchase Price, based on the
balance sheet of the Company as of the Measurement Date. Mr. Cameron will have
up to 15 days to either approve or object to their Closing Statement. If he
objects to the Closing Statement prepared by Siemens, there is a dispute
resolution mechanism in the Merger Agreement that contemplates resolution of any
objections within 40 days after Mr. Cameron's objections, although actual
resolution may take longer.

      Each share of Common Stock will be entitled to receive its proportionate
share of the Purchase Price (as calculated in the manner and at the times
described above). The Company has advised Siemens that as of March 9, 2000,
there were 32,814,724 outstanding shares of the Common Stock. Because the final
deductions to the Purchase Price will not be known until the Closing Statement
is agreed to, and the total claims against the escrow amounts will not be
finally known until the end of the respective escrow periods, neither Siemens
nor the Company can determine at this time what either the Purchase Price or the
Purchase Price per share will be. However, the Company has informed Siemens that
it presently estimates that the Purchase Price per share (including amounts that
will be subject to claims of Siemens under the Escrow Agreement and the Tax
Escrow Agreement) will be between $1.20 and $1.50, and may be significantly less
than such amount depending upon the amount of indemnification to which Siemens
may be entitled.

      In addition, pursuant to the terms of the Merger Agreement, and in
accordance with the terms of the Notes Indenture, the Company will call for
redemption all of the Notes outstanding at a redemption price equal to 112-1/2%
of their principal amount plus accrued interest to the date of redemption. The
redemption of the Notes will be funded by Siemens and is expected to take place
at least 30 days, and no more than 60 days, after the Measurement Date.

      The shares of Common Stock are registered under the Securities Exchange
Act of 1934, as amended (the "Exchange Act"). Registration of the shares of
Common Stock under the Exchange Act may be terminated upon application of the
Company to the Securities and Exchange Commission (the "SEC") if the shares of
Common Stock are neither listed on a national securities exchange nor held by
300 or more holders of record. Siemens intends to seek to cause the Company to
apply for termination of registration under the Exchange Act as soon after the
exercise of an Option or the completion of the Merger as the requirements for
such termination are met.

      The Merger Agreement, the Escrow Agreement, the Tax Escrow Agreement, the
Stockholders Agreement and the press release relating to the Merger are attached
as Exhibits 1, 2, 3, 4 and 5, respectively, and are incorporated by reference
into this Item 4 and the foregoing description of such






                                       7
<PAGE>   8
documents and transactions contemplated thereby are qualified in their entirety
by reference to such Exhibits.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

      Pursuant to the Stockholders Agreement, the Principal Stockholders: (i)
granted Acquisition an exclusive option to acquire their shares at any time;
(ii) agreed to vote their shares (a) in favor of the adoption of the Merger
Agreement and (b) against any acquisition transaction with any third-party;
(iii) agreed to provide all notices and perform all actions necessary for the
consummation of the Merger; and (iv) received an undertaking from Acquisition to
purchase their shares, at their option, under certain circumstances. In
addition, Mr. Cameron agreed to exercise certain rights (the "Drag-Along
Rights") to require certain other stockholders of the Company holding
approximately 6,461,944 shares of Common Stock in the aggregate to sell their
shares to Acquisition on the same terms. The stockholders of the Company whose
shares are to be purchased by Acquisition as a result of the exercise of the
Drag-Along Rights are hereinafter referred to as the "Drag-Along Stockholders."
As of the date of this Schedule 13D, neither of the Options has been exercised.

      The Principal Stockholders may exercise the Put Option if: (i) the
Information Statement required by Section 14(c) of the Exchange Act shall have
been filed with the SEC in preliminary form in accordance with the Merger
Agreement; (ii) a period of 12 days shall have elapsed following such filing;
(iii) the Company shall have been advised by the staff of the SEC that it is in
the process of reviewing the Information Statement required by Section 14(c) of
the Exchange Act and, notwithstanding the Company's reasonable efforts, that
review shall not have been completed during this 12-day period; and (iv) all
other conditions to the consummation of the Merger contained in the Merger
Agreement have been satisfied. The Put Option may be exercised for all, but not
less than all, of the shares of Common Stock held by the Principal Stockholders,
including those of shares of Common Stock held by Drag-Along Stockholders, for
an amount per share equal to the Purchase Price.

      Except as referred to herein, none of Siemens AG, Siemens or Acquisition,
nor to the knowledge of any of them, any other person referred to in Schedules
I, II, or III attached hereto has acquired or disposed of any shares of Common
Stock during the past 60 days. Subject to the voting agreements contained in the
Stockholders Agreement described above, the Principal Stockholders have the sole
right to vote or direct the vote of those shares of Common Stock. Subject to the
Options, the Principal Stockholders have the sole right to dispose of or direct
the disposition of those shares of Common Stock. No other person is known by
Siemens AG, Siemens or Acquisition to have the right to receive or the power to
direct the receipt of dividends from, or proceeds from the sale of, any of the
Common Stock.

      The Merger Agreement and the Stockholders Agreement provide that, if
either of the Options is exercised, the Siemens Designees will constitute a
majority of the Company's Board of Directors. As a result of the Options and the
Drag-Along Rights, Siemens may be deemed to own beneficially an aggregate of
31,181,540 shares of Common Stock, or approximately 95.02% of the currently
outstanding shares of Common Stock.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIP WITH RESPECT
        TO SECURITIES OF THE ISSUER.

      The descriptions of the Merger Agreement and the Stockholders Agreement
set forth in Items 4 and 5 above is incorporated in this Item 6 by reference.





                                       8
<PAGE>   9
ITEM 7.     MATERIAL TO BE FILED AS EXHIBITS.



<TABLE>
<CAPTION>
      Exhibit
      Number        Description of Exhibit
      ------        ----------------------
<S>                <C>
      7.1           Agreement and Plan of Merger dated of March 13, 2000 by and
                    between Siemens Corporation, Emilia Acquisition Corp. and
                    ENTEX Information Services, Inc. (Certain Schedules and
                    Exhibits have been omitted pursuant to Rule 601(b)(2) of
                    Regulation S-K. Such Schedules and Exhibits are listed and
                    described in the Agreement and Plan of Merger. The
                    Registrant hereby agrees to furnish to the Securities and
                    Exchange Commission, upon its request, any or all such
                    omitted Schedules and Exhibits.).

      7.2           Form of Escrow Agreement among Siemens Corporation, ENTEX
                    Information Services, Inc., ChaseMellon Shareholder Services,
                    L.L.C. and Dort A. Cameron, III.

      7.3           Form of Tax Escrow Agreement among Siemens Corporation, ENTEX
                    Information Services, Inc., ChaseMellon Shareholder Services,
                    L.L.C. and Dort A. Cameron, III.

      7.4           Stockholders Agreement dated as of March 13, 2000 by and
                    among Siemens Corporation, Emilia Acquisition Corp., Dort A.
                    Cameron, III, Entex Associates L.P. and John A. McKenna, Jr.

      7.5           Press Release of ENTEX Information Services, Inc. dated March
                    14, 2000.
</TABLE>





                                       9
<PAGE>   10
                                  SIGNATURES


      After reasonable inquiry and to the best of their knowledge and belief,
the undersigned certify that the information set forth in this statement is
true, complete and correct. In executing this statement, the undersigned agree,
to the extent required by Rule 13d-1(f), that this statement is being filed on
behalf of each of the reporting persons herein.

Dated March 23, 2000

                                    SIEMENS AKTIENGESELLSCHAFT


                                    By: /s/ Gerwin Zott
                                        _________________________
                                        Name: Gerwin Zott
                                        Title: Corporate Counsel


                                    By: /s/ Karl-Heinz Seibert
                                        _________________________
                                        Name: Karl-Heinz Seibert
                                        Title: Vice President


                                    EMILIA ACQUISITION CORP.


                                    By: /s/ Gerald Wright
                                        _________________________
                                        Name: Gerald Wright
                                        Title: President


                                    By: /s/ Michael Schiefen
                                        _________________________
                                        Name:  Michael Schiefen
                                        Title: Vice President










                                       10
<PAGE>   11
                                SCHEDULE I


            The name and position of each of the executive officers and members
of the Managing Board of Directors of Siemens AG are set forth below. Each of
these persons is a Member of the Managing Board of Directors of Siemens AG and
each of these persons is a citizen of the Federal Republic of Germany.





<TABLE>
<CAPTION>
NAME                      POSITION WITH SIEMENS AG AND     BUSINESS ADDRESS
- ----                      PRINCIPAL OCCUPATION             ----------------
                          --------------------

<S>                       <C>                              <C>
Dr. Heinrich von Pierer   President and CEO,               Wittelsbacherplatz
                          Head of Corporate Planning       2
                          and Development Department       D-80333 Munich
                                                           Federal Republic of
                                                           Germany

Dr. Volker Jung           Special Responsibilities:        Wittelsbacherplatz
                          Components, Information and      2
                          Communications  Business         D-80333 Munich
                          Segments,                        Federal Republic of
                          Regions Africa, Middle           Germany
                          East, C.I.S.

Mr. Roland Koch           Head of Information and          Hofmannstrasse 51
                          Communication Networks           D-81359 Munich
                          Group                            Federal Republic of
                                                           Germany

Dr. Edward G. Krubasik    Special Responsibilities:        Werner-von-Siemens-
                          Industry  and                    Strasse 50
                          Transportation Business          D-91052 Erlangen
                          Segments                         Federal Republic of
                                                           Germany

Mr. Heinz Joachim         Chief Financial Officer          Wittelsbacherplatz
Neuburger                 Head of Corporate Finance        2
                          Department,                      D-80333 Munich
                          Special Responsibilities:        Federal Republic of
                          Financial Services               Germany

Prof. Peter Pribilla      Head of Corporate Human          Wittelsbacherplatz
                          Resources Department,            2
                          Special Responsibilities:        D-80333 Munich
                          Region the Americas              Federal Republic of
                                                           Germany

Mr. Jurgen Radomski       Special Responsibilities:        Werner-von-Siemens-
                          Health Care and Lightning        Strasse 50
                          Business Segments, Region        D-91052 Erlangen
                          Europe                           Federal Republic of
</TABLE>




                                       11
<PAGE>   12
<TABLE>
<S>                       <C>                              <C>
                                                           Germany

Dr. Claus Weyrich         Head of Corporate                Otto-Hahn-Ring 6
                          Technology Department            D-81739 Munich
                                                           Federal Republic of
                                                           Germany

Dr. Gunther Wilhelm       Special Responsibilities:        Werner-von-Siemens-
                          Energy Business Segments,        Strasse 50
                          Regions Asia, Australia          D-91052 Erlangen
                                                           Federal Republic of
                                                           Germany

Dr. Klaus Wucherer        Head of Automation and           Gleiwitzerstrasse 55
                          Drives Group                     D-90475 Nuremberg
                                                           Federal Republic of
                                                           Germany
</TABLE>







                                       12
<PAGE>   13
                                 SCHEDULE II

The name and position of the executive officers and members of the board of
directors of Siemens Corporation are set forth below.


<TABLE>
<CAPTION>
NAME AND CITIZENSHIP      POSITION WITH SIEMENS          BUSINESS ADDRESS
- --------------------      CORPORATION AND PRINCIPAL      ----------------
                          OCCUPATION
                          ----------
<S>                       <C>                           <C>
Mr. Heinz Joachim         Director.  Chief              Wittelsbacherplatz 2
Neuburger                 Financial Officer             D-80333 Munich
Federal Republic of       Siemens AG, head of           Federal Republic of
Germany                   Corporate Finance             Germany
                          Department, Special
                          Responsibilities
                          Financial Services

Prof. Peter H. Pribilla   Director. Head of Corporate   Wittelsbacherplatz 2
Federal Republic of       Human Resources Department,   D-80333 Munich
Germany                   Siemens AG                    Federal Republic of
                                                        Germany
                          Special Responsibilities:
                          Region the Americas

Mr. Gerhard Schulmeyer    Director, President and       153 East 53rd Street
Federal Republic of       Chief Executive Officer       New York, New York 10022
Germany

Gerald H. Wright          Executive Vice President      153 East 53rd Street
Federal Republic          and Chief Executive Officer   New York, New York 10022
of Germany

Thomas E. Bolas           Vice President, Corporate     153 East 53rd Street
United States of          Management Audit              New York, New York 10022
America

John J. Chestnut          Vice President, Controller    153 East 53rd Street
United States of                                        New York, New York 10022
America

Dana Scott Deasy          Vice President, Chief         153 East 53rd Street
United States of          Information Officer           New York, New York 10022
America

Ruth Fattori              Vice President, Corporate     153 East 53rd Street
United States of          Human Resources               New York, New York 10022
America

E. Robert Lupone          Vice President, General       153 East 53rd Street
United States of          Counsel and Secretary         New York, New York 10022
America

George Pompetzki          Vice President, Taxes         153 East 53rd Street
United States of                                        New York, New York 10022
America

Michael Schiefen          Vice President, Corporate     153 East 53rd Street
United States of          Development                   New York, New York 10022
America

Krister Willgren          Treasurer                     153 East 53rd Street
United States of                                        New York, New York 10022
America
</TABLE>





                                       13
<PAGE>   14
                                 SCHEDULE III

The name and position of the executive officers and members of the board of
directors of Emilia Acquisition Corp. are set forth below. Each of these persons
is a member of the Board of Directors of Emilia Acquisition Corp. and each of
these persons is a citizen of the United States of America, unless otherwise
indicated.

<TABLE>
<CAPTION>
NAME                      POSITION WITH ACQUISITION AND    BUSINESS ADDRESS
- ----                      PRINCIPAL OCCUPATION             ----------------
                          --------------------
<S>                       <C>                              <C>
Mr. Gerald Wright,        President.  Executive            c/o Siemens Corporation
citizen of the Federal    Vice President and Chief         153 East 53rd Street
Republic of Germany       Financial Officer of             New York, New York 10022
                          Siemens Corporation

Mr. Michael Schiefen      Vice President, Vice             c/o Siemens Corporation
                          President, Corporate             153 East 53rd Street
                          Development of Siemens           New York, New York 10022
                          Corporation

Mr. Kenneth R. Meyers     Secretary.  Senior               c/o Siemens Corporation
                          Counsel of Siemens               153 East 53rd Street
                          Corporation                      New York, New York 10022
</TABLE>








                                       14
<PAGE>   15
                                EXHIBIT INDEX



<TABLE>
<CAPTION>
      Exhibit
      Number        Description of Exhibit
      ------        ----------------------
<S>                 <C>
      7.1           Agreement and Plan of Merger dated of March 13, 2000 by and
                    between Siemens Corporation, Emilia Acquisition Corp. and
                    ENTEX Information Services, Inc. (Certain Schedules and
                    Exhibits have been omitted pursuant to Rule 601(b)(2) of
                    Regulation S-K. Such Schedules and Exhibits are listed and
                    described in the Agreement and Plan of Merger. The
                    Registrant hereby agrees to furnish to the Securities and
                    Exchange Commission, upon its request, any or all such
                    omitted Schedules and Exhibits.).

      7.2           Form of Escrow Agreement among Siemens Corporation, ENTEX
                    Information Services, Inc., ChaseMellon Shareholder Services,
                    L.L.C. and Dort A. Cameron, III.

      7.3           Form of Tax Escrow Agreement among Siemens Corporation, ENTEX
                    Information Services, Inc., ChaseMellon Shareholder Services,
                    L.L.C. and Dort A. Cameron, III.

      7.4           Stockholders Agreement dated as of March 13, 2000 by and
                    among Siemens Corporation, Emilia Acquisition Corp., Dort A.
                    Cameron, III, Entex Associates L.P. and John A. McKenna, Jr.

      7.5           Press Release of ENTEX Information Services, Inc. dated March
                    14, 2000.
</TABLE>








                                       15

<PAGE>   1
                                                                  EXECUTION COPY








                          AGREEMENT AND PLAN OF MERGER

                                  BY AND AMONG

                              SIEMENS CORPORATION,

                            EMILIA ACQUISITION CORP.

                                       AND

                        ENTEX INFORMATION SERVICES, INC.



                           Dated as of March 13, 2000
<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                          PAGE


<S>                                                                                                       <C>
1.  The Merger; Additional Actions.......................................................................   2

    1.1   The Merger.....................................................................................   2

    1.2   Effective Time.................................................................................   2

    1.3   Closing........................................................................................   2

    1.4   Effects of the Merger..........................................................................   2

    1.5   Certificate of Incorporation, By-Laws and Officers and Directors of the Surviving Corporation..   2

    1.6   Directors......................................................................................   2

    1.7   Further Assurances.............................................................................   3

2.  Conversion of Shares.................................................................................   3

    2.1   Conversion of Capital Stock....................................................................   3

    2.2   Closing Statement Procedures...................................................................   6

    2.3   Deposits of Funds at and following the Closing.................................................   6

    2.4   Payment for Certificates.......................................................................   7

3.  Representations and Warranties of the Company........................................................   8

    3.1   Organization...................................................................................   8

    3.2   Capitalization.................................................................................   8

    3.3   Authority.....................................................................................   10

    3.4   No Conflicts; Governmental Requirements; SEC Documents........................................   10

    3.5   Subsidiaries..................................................................................   11

    3.6   Books and Records.............................................................................   11

    3.7   Financial Statements..........................................................................   11

    3.8   Absence of Undisclosed Liabilities............................................................   12

    3.9   Operations and Obligations....................................................................   12

    3.10  Properties....................................................................................   12

    3.11  Accounts Receivable; Accounts Payable; Inventory..............................................   13

    3.12  Contracts.....................................................................................   13

    3.14  Litigation....................................................................................   15

    3.15  Compliance with Law; Authorizations...........................................................   15

    3.16  Intellectual Property.........................................................................   15

    3.17  Tax Matters...................................................................................   17

    3.18  Employee Benefit Plans........................................................................   18
</TABLE>



                                      -i-
<PAGE>   3
                                TABLE OF CONTENTS
                                   (CONTINUED)

<TABLE>
<CAPTION>
                                                                                                          PAGE


<S>                                                                                                       <C>
    3.19  Employee Compensation.........................................................................   20

    3.20  Employees.....................................................................................   20

    3.21  Environmental Laws............................................................................   21

    3.22  Insurance.....................................................................................   21

    3.23  Bank Accounts, Letters of Credit and Powers of Attorney.......................................   21

    3.24  No Adverse Development........................................................................   22

    3.25  Transactions with Affiliates..................................................................   22

    3.26  Information Statement; Merger Materials.......................................................   22

    3.27  Brokers.......................................................................................   22

4.  Representations and Warranties of Siemens and Acquisition...........................................   22

    4.1   Organization..................................................................................   22

    4.2   Corporate Authority...........................................................................   22

    4.3   No Breach.....................................................................................   22

    4.4   Litigation....................................................................................   23

    4.5   Brokers.......................................................................................   23

    4.6   Information...................................................................................   23

    4.7   Financing.....................................................................................   23

5.  Covenants and Additional Agreements.................................................................   23

    5.1   Conduct of Business...........................................................................   23

    5.2   No Solicitations..............................................................................   25

    5.3   Access to Information; Confidentiality........................................................   26

    5.4   Preparation of Information Statement; Approval of Stockholders; Siemens Approval..............   27

    5.5   Regulatory and Other Approvals................................................................   28

    5.6   Notice and Cure...............................................................................   28

    5.7   Company Stock Plans; Warrants.................................................................   28

    5.8   Termination of Contracts......................................................................   28

    5.9   Fulfillment of Conditions.....................................................................   29

    5.10  Cooperation...................................................................................   29

    5.11  Director and Officer Indemnification..........................................................   29

    5.12  Additional Covenants..........................................................................   30

6.  Conditions to Closing...............................................................................   30

    6.1   Conditions to the Obligations of Siemens and Acquisition......................................   30
</TABLE>



                                      -ii-
<PAGE>   4
                                TABLE OF CONTENTS
                                   (CONTINUED)

<TABLE>
<CAPTION>
                                                                                                          PAGE


<S>                                                                                                       <C>
    6.2   Conditions to the Obligations of the Company..................................................   31

7.  Survival; Indemnification; Tax Matters..............................................................   32

    7.1   Survival......................................................................................   32

    7.2   Indemnification...............................................................................   32

    7.3   Limitation of Liability; Disposition of Escrow Fund...........................................   33

    7.4   Stockholders' Representative..................................................................   33

    7.5   Notice of Claims..............................................................................   33

    7.6   Defense of Third Party Claims.................................................................   34

    7.7   Dispute Resolution: Negotiation, Mediation and Arbitration....................................   34

    7.8   Exclusive Remedy..............................................................................   35

    7.9   Tax Matters...................................................................................   35

8.  Termination; Effect of Termination..................................................................   36

    8.1   Termination...................................................................................   36

    8.2   Effect of Termination.........................................................................   37

9.  Fees and Expenses...................................................................................   37

    9.1   Expenses......................................................................................   37

    9.2   Stockholders of the Company...................................................................   38

10. Definitions.........................................................................................   38

11. Miscellaneous.......................................................................................   46

    11.1  Press Releases................................................................................   46

    11.2  Integration...................................................................................   46

    11.3  Assignment and Binding Effect.................................................................   46

    11.4  Waiver........................................................................................   46

    11.5  Notices.......................................................................................   46

    11.6  Amendment.....................................................................................   48

    11.7  Governing Law.................................................................................   48

    11.8  Third Party Beneficiaries.....................................................................   48

    11.9  Performance...................................................................................   48

    11.10 Severability..................................................................................   48

    11.11 Extensions....................................................................................   48

    11.12 Section Headings..............................................................................   48

    11.13 Exhibits; Disclosure Schedule.................................................................   48
</TABLE>



                                     -iii-
<PAGE>   5
                                TABLE OF CONTENTS
                                   (CONTINUED)


<TABLE>
<CAPTION>
                                                                                                          PAGE


<S>                                                                                                       <C>
    11.14 Counterparts..................................................................................   48
</TABLE>



                                      -iv-
<PAGE>   6
                                    EXHIBITS

<TABLE>
<S>            <C>
Exhibit A      Certificate of Incorporation of Surviving Corporation

Exhibit B      By-Laws of Surviving Corporation

Exhibit C      Form of Closing Statement and Measurement Date Balance Sheet
               Methodologies

Exhibit D      Form of Confidentiality/Non-Solicit Agreement

Exhibit E      Matters to be opined to by counsel to the Company

Exhibit F-1    List of Individual Resignations (Employment and Offices)

Exhibit F-2    List of Individual Resignations (Offices)

Exhibit G      Form of Tax-Related Insurance Policies

Exhibit H      Form of Opinion of Siemens Internal Counsel

Exhibit I      Escrow Agreement

Exhibit J      Tax Escrow Agreement

Exhibit K      Directors and Officers of Surviving Corporation

Exhibit L      Form of Dort A. Cameron, III Side Letter
</TABLE>
<PAGE>   7
                          AGREEMENT AND PLAN OF MERGER

         AGREEMENT AND PLAN OF MERGER (this "Agreement"), dated as of March 13,
2000, by and among SIEMENS CORPORATION, a Delaware corporation ("Siemens"),
EMILIA ACQUISITION CORP., a Delaware corporation ("Acquisition"), and ENTEX
INFORMATION SERVICES, INC., a Delaware corporation (the "Company"). Capitalized
terms used in this Agreement and not otherwise defined have the meanings
ascribed to them in Section 10.

                                    RECITALS

     A. The Company is a Delaware corporation, with its principal executive
office located at Six International Drive, Rye Brook, New York 10573.

     B. Siemens is a Delaware corporation with its principal offices located at
153 East 53rd Street, New York, New York 10022. Acquisition is a wholly owned
subsidiary of Siemens and was formed to merge with and into the Company so that,
as a result of the merger, the Company will survive and become a wholly owned
subsidiary of Siemens.

     C. The respective Boards of Directors of Siemens, Acquisition and the
Company have determined that this Agreement and the consummation of the merger
of Acquisition with and into the Company (the "Merger") in accordance with the
laws of the State of Delaware and subject to the terms and conditions of this
Agreement, is advisable and in the best interests of Siemens, Acquisition and
the Company, respectively, and their respective stockholders and have approved
this Agreement.

     D. The principal stockholder of the Company and certain of his affiliates
have simultaneously herewith entered into an agreement with Siemens and
Acquisition (the "Stockholders Agreement") in which those Persons have (i)
granted Acquisition an option to acquire their shares (the "Call Option"); (ii)
agreed to vote their shares (x) in favor of the adoption of this Agreement and
(y) against any Acquisition Transaction with any third party; (iii) agreed to
provide all notices and perform all actions necessary for the consummation of
the transactions contemplated herein; (iv) received an undertaking from
Acquisition to purchase their shares, at their option, under certain
circumstances (the "Put Option"); and (v) agreed to exercise certain rights (the
"Drag-Along Rights") to require various stockholders of the Company to sell
their shares on the same terms.

     E. The parties intend that Siemens' acquisition of the Company will be
accomplished in a single step pursuant to the Merger, but that under certain
conditions the acquisition will instead be accomplished in two phases - namely,
a purchase by Acquisition of the shares covered by the Stockholders Agreement,
followed by completion of the Merger. In this Agreement, the term "Initial
Purchase" refers to Acquisition's acquisition of the shares covered by the
Stockholders Agreement, either as a result of the exercise of the Call Option or
the Put Option, if that acquisition is prior to the Effective Time, and the term
"Initial Purchase Date" refers to the date on which title to those shares passes
to Acquisition.

     F. Certain officers and employees of the Company have executed and
delivered to Siemens employment agreements, termination and severance agreements
and/or non-competition/non-solicitation agreements that by their terms will take
effect as of the earlier of (i) the Effective Time or (ii) the Initial Purchase
Date.

     G. Siemens, Acquisition and the Company desire to make certain
representations and warranties, covenants and agreements in connection with the
Merger and/or the Initial Purchase and also to set forth the terms and
conditions of the Merger and the Initial Purchase, all as set forth in this
Agreement.
<PAGE>   8
     NOW, THEREFORE, in consideration of the foregoing and the mutual
representations, warranties, covenants and agreements contained herein and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto intending to be legally bound do hereby agree
as follows:

1. THE MERGER; ADDITIONAL ACTIONS.

     1.1 The Merger. At the Effective Time, upon the terms and subject to the
conditions of this Agreement, Acquisition shall be merged with and into the
Company in accordance with the provisions of the General Corporation Law of the
State of Delaware (the "DGCL"). The Company shall be the surviving corporation
in the Merger (the "Surviving Corporation"). As a result of the Merger, all of
the respective outstanding shares of capital stock of the Company and
Acquisition shall be converted or cancelled in the manner provided in Section 2.

     1.2 Effective Time. At the Closing, a certificate of merger (the
"Certificate of Merger") shall be duly prepared and executed by the Surviving
Corporation and thereafter delivered to the Secretary of State of the State of
Delaware (the "Secretary of State") for filing, as provided in Section 251 of
the DGCL, on, or as soon as practicable after, the Closing Date. The Merger
shall become effective at the time of the filing of the Certificate of Merger
with the Secretary of State, or at such later time as may be agreed by Siemens
and the Company and stated in the Certificate of Merger (the date and time of
such filing (or stated later time, if any) being referred to herein as the
"Effective Time").

     1.3 Closing. The closing of the Merger (the "Closing") shall take place at
the offices of Clifford Chance Rogers & Wells LLP, 200 Park Avenue, New York,
New York 10166, on a date and at a time to be specified by the parties, which
shall in no event be later than 10:00 a.m., local time, on the second business
day following satisfaction of the conditions set forth in Section 6.1(e), (g)
and (i), provided that the other closing conditions set forth in Section 6 shall
have been satisfied or, if permissible, waived in accordance with this
Agreement, or on such other date, time and place as the parties may mutually
agree (the "Closing Date"). At the Closing there shall be delivered to Siemens,
Acquisition and the Company the certificates and other documents and instruments
required to be delivered under Section 6.

     1.4 Effects of the Merger. At the Effective Time, the effects of the Merger
shall be as provided in the applicable provisions of the DGCL.

     1.5 Certificate of Incorporation, By-Laws and Officers and Directors of the
Surviving Corporation.

          (a) The certificate of incorporation of the Company, as in effect
immediately prior to the Effective Time, shall be amended in the Merger so as to
read in its entirety as set forth in Exhibit A and, as so amended, shall be the
certificate of incorporation of the Surviving Corporation until thereafter
amended as provided by law and such certificate of incorporation.

          (b) The by-laws in the form set forth in Exhibit B shall be the
by-laws of the Surviving Corporation until thereafter amended as provided by
law, the Certificate of Incorporation of the Surviving Corporation and such
by-laws.

          (c) From and after the Effective Time, the directors and officers of
the Surviving Corporation shall be as set forth on Exhibit K hereto, until their
respective successors are duly elected and qualified or until their earlier
death, resignation or removal in accordance with the Surviving Corporation's
Certificate of Incorporation and By-Laws.

     1.6 Directors.



                                       2
<PAGE>   9
     If the Initial Purchase occurs:

          (a) Upon the Initial Purchase Date and from time to time thereafter so
long as Acquisition, Siemens and Siemens' other direct or indirect wholly-owned
Subsidiaries collectively continue to hold shares of Company Common Stock in an
amount at least equal to a majority of the outstanding voting power of the
Company's capital stock, Siemens shall be entitled to designate such number of
directors, rounded up to the next whole number, on the Board of Directors of the
Company, each Subsidiary and each standing committee thereof as is equal to the
product of the total number of directors on the Board of Directors of the
Company, such Subsidiary and such committee (determined after giving effect to
the directors elected pursuant to this sentence), as the case may be, multiplied
by the percentage that the aggregate number of shares of Company Common Stock
beneficially owned by Siemens or its wholly owned Subsidiaries bears to the
total number of shares of Company Common Stock then outstanding, and the Company
shall, upon request of Siemens, promptly take all actions necessary to cause
Siemens' designees to be so elected, including, if necessary, increasing the
size of the Board of Directors of the Company or such Subsidiary or using its
best efforts to obtain the resignations of one or more existing directors of the
Company or such Subsidiary; provided, however, that prior to the Effective Time,
the Board of Directors of the Company and each Subsidiary shall contain at least
two members who are neither officers, directors nor designees of Siemens ( the
"Company Designees").

          (b) The Company's obligations to appoint Siemens' designees to the
Board shall be subject to Section 14(f) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act"), and Rule 14f-1 promulgated thereunder. The
Company shall promptly take all actions required pursuant to Section 14(f) and
Rule 14f-1 in order to fulfill its obligations under this Section 1.6 and shall
distribute to its stockholders promptly following the execution and delivery of
this Agreement such written material as is required under such Section and Rule
in order to fulfill its obligations under this Section 1.6 (the "14(f)
Material"). Siemens will supply any information with respect to itself and its
officers, directors and Affiliates required by such Section and Rule to the
Company to be included in the 14(f) Material distributed by the Company.

          (c) From and after the election or appointment of Siemens' designees
pursuant to this Section 1.6, if any, and prior to the Effective Time, any
amendment or termination of this Agreement by the Company, any extension by the
Company of the time for the performance of any of the obligations or other acts
of Siemens or Acquisition or waiver of any of the Company's rights hereunder, or
any other action taken by the Board of Directors of the Company in connection
with this Agreement, will require the concurrence of a majority of the directors
of the Company then in office who are Company Designees.

     1.7 Further Assurances. Each party hereto shall execute such further
documents and instruments and take such further actions as may reasonably be
requested by one or more of the others to consummate the Merger, to vest the
Surviving Corporation with full title to all assets, properties, rights,
approvals, immunities and franchises of Acquisition and the Company or to
otherwise effect the purposes of this Agreement.

2. CONVERSION OF SHARES.

     2.1 Conversion of Capital Stock. At the Effective Time, by virtue of the
Merger and without any further action on the part of any holder of capital stock
of the Company:

          (a) Capital Stock of Acquisition. Each issued and outstanding share of
the common stock, par value $.0001 per share, of Acquisition ("Acquisition
Common Stock") shall be converted into and become one fully paid and
nonassessable share of common stock, par value $.0001 per share, of the
Surviving Corporation ("Surviving Corporation Common Stock"). Each certificate
representing


                                       3
<PAGE>   10
outstanding shares of Acquisition Common Stock shall at the Effective Time
represent an equal number of shares of Surviving Corporation Common Stock.

          (b) Cancellation of Treasury Stock and Stock Owned by Siemens and
Acquisition. All shares of capital stock of the Company that are owned by the
Company as treasury stock and any shares of Company Common Stock owned by
Siemens or Acquisition or by any direct or indirect wholly-owned Subsidiary of
Siemens or Acquisition automatically shall be cancelled and shall cease to exist
and no consideration shall be delivered in exchange therefor.

          (c) Conversion of Company Capital Stock.

               (i) Each issued and outstanding share of the common stock, par
value $.0001 per share, of the Company ("Company Common Stock") (other than
shares to be cancelled in accordance with Section 2.1(b) and other than shares
that are Dissenting Shares (as defined in Section 2.1(d)(i)) shall be converted
into the right to receive an amount per share in cash (the "Merger Price") equal
to the quotient of (x) the Adjusted Acquisition Price divided by (y) the number
of shares of Company Common Stock that are issued and outstanding immediately
prior to the Effective Time (the "Outstanding Share Amount"); provided, however,
that in no event shall the aggregate Merger Price exceed the sum of (i)
66,942,037 plus (ii) the aggregate amount in cash received by the Company after
the date of this Agreement and prior to the Effective Time upon exercise of
Options.

               All such shares of Company Common Stock shall no longer be
outstanding and shall be cancelled automatically and shall cease to exist, and
each holder of a certificate representing any such shares of Company Common
Stock shall cease to have any rights with respect thereto, except the right to
receive, subject to the terms of the Escrow Agreement and the Tax Escrow
Agreement and Sections 2.1(c)(ii), (iii) and (iv), the Merger Price and, if
applicable, the Incremental Amount per share, upon the surrender of such
certificate in accordance with Section 2.3, without interest. For purposes of
this Agreement, the term "Adjusted Acquisition Price" shall be (i) $105,000,000
(the "Acquisition Price") minus (ii) the Closing Liquid Net Worth Adjustment
plus (iii) an additional amount equal to the product of (x) the amount
determined pursuant to the preceding clauses (i) and (ii) times (y) 6.5% per
year from the Measurement Date to the Effective Time, calculated on an
uncompounded basis.

               (ii) The first $20,000,000 of the aggregate Merger Price and, if
applicable, Incremental Amount (the "Indemnity Amount") shall be deposited into
escrow pursuant to the terms of the Escrow Agreement. In accordance with the
terms of the Escrow Agreement, following completion of the Escrow period, the
Remaining Escrow Balance shall be deposited with the Payment Agent in accordance
with Section 2.3 for distribution to the holders of shares of the Company Common
Stock as of the Effective Time in proportion to their respective share
ownership.

               (iii) If the Tax Insurance Election is made, to the extent the
aggregate Merger Price and, if applicable, Incremental Amount exceeds
$20,000,000, the next $20,000,000 of the aggregate Merger Price and, if
applicable, Incremental Amount (the "Tax Escrow Amount") shall be deposited into
escrow pursuant to the terms of the Tax Escrow Agreement. In accordance with the
terms of the Tax Escrow Agreement, following completion of the Tax Matters
Escrow Period, the Tax Escrow Balance shall be deposited with the Payment Agent
in accordance with Section 2.3 for distribution to the holders of shares of
Company Common Stock as of the Effective Time in proportion to their respective
share ownership.

               (iv) To the extent the aggregate Merger Price and, if applicable,
Incremental Amount exceeds $20,000,000 or, if the Tax Insurance Election is
made, $40,000,000, the next $500,000 of the aggregate Merger Price and, if
applicable, Incremental Amount (the "Stockholder Representative


                                       4
<PAGE>   11
Expense Amount") shall be paid to the Stockholders' Representative for the
purpose of funding expenses in connection with his performance of the duties of
Stockholders' Representative; provided that the Stockholders' Representative
shall deliver an undertaking to the Company pursuant to which he will agree to
deliver to the Payment Agent any portion of such amount not utilized for such
purpose, which portion shall be distributed to the holders of shares of Company
Common Stock as of the Effective Time in proportion to the respective share
ownership.

               (v) If the Effective Time occurs prior to the date letters of
transmittal are first mailed pursuant to Section 2.4(b), an additional amount
per share of Company Common Stock shall be received upon conversion of each
share in the Merger in an amount equal to product of (x) the Merger Price and
(y) 6.5% per year from the Effective Time until the date letters of transmittal
are first mailed pursuant to Section 2.4(b), calculated on an uncompounded basis
(the "Incremental Amount").

          (d) Dissenting Shares. (i) Notwithstanding any provision of this
Agreement to the contrary, each outstanding share of Company Common Stock the
holder of which has not voted in favor of the Merger, has perfected such
holder's right to an appraisal of such holder's shares in accordance with the
applicable provisions of the DGCL and has not effectively withdrawn or lost such
right to appraisal (in each case a "Dissenting Share"), shall not be converted
into or represent a right to receive the Merger Price and, if applicable, the
Incremental Amount pursuant to Section 2.1(c), but rather the holder thereof
shall be entitled only to such rights as are granted by the applicable
provisions of the DGCL; provided, however, that any Dissenting Share held by a
Person at the Effective Time who shall, after the Effective Time, withdraw the
demand for appraisal or lose the right of appraisal, in either case pursuant to
the DGCL, shall be deemed to be converted into, as of the Effective Time, the
right to receive, subject to the terms of the Escrow Agreement and the Tax
Escrow Agreement and Sections 2.1(c)(ii), (iii) and (iv), the Merger Price and,
if applicable, the Incremental Amount pursuant to Section 2.1(c).

               (ii) The Company shall give Siemens (x) prompt notice of any
written demands for appraisal, withdrawals of demands for appraisal and any
other instruments served pursuant to the applicable provisions of the DGCL
relating to the appraisal process received by the Company and (y) the exclusive
right to direct all negotiations and proceedings with respect to demands for
appraisal under the DGCL. The Company will not, except with the prior written
consent of Siemens, voluntarily make any payment with respect to any demands for
appraisal or settle or offer to settle any such demands.

          (e) Treatment of Options. As of the date of this Agreement, each
option to purchase Company Common Stock that is then outstanding (each an
"Option") pursuant to a compensation plan or arrangement of the Company (the
"Company Stock Plans"), whether or not then vested or exercisable, will become
vested and exercisable. Each Option (other than Options issued pursuant to the
Company's 1996 Performance Incentive Plan) that has not been exercised as of the
Effective Time shall be cancelled without consideration. Each Option issued
pursuant to the Company's 1996 Performance Incentive Plan that has not been
exercised as of the Effective Time shall be exercisable solely for cash in an
amount not to exceed the Merger Price. Prior to the Effective Time, the Company
will obtain all consents and make all amendments, if any, to the terms of
Options and the Company Stock Plans, if any, pursuant to which the Options were
issued that are necessary to give effect to the provisions of this Section
2.1(e).

          (f) Warrants. At the Effective Time, each warrant to purchase Company
Common Stock that is outstanding as of the Effective Time (each a "Warrant")
pursuant to any of the Warrant Agreements or otherwise shall be exercisable
solely for cash in an amount not to exceed the Merger Price. Prior to the
Effective Time, the Company will obtain all consents and make all amendments, if
any, to the terms of the Warrants and the Warrant Agreements that are necessary
to give effect to the provisions of this Section 2.1(f).



                                       5
<PAGE>   12
     2.2 Closing Statement Procedures.

          (a) As promptly as practicable, but in any event not later than 30
days after the date (the "Measurement Date") that is the first to occur of (i)
the Closing Date and (ii) the Initial Purchase Date, Siemens shall cause to be
prepared and delivered to Dort A. Cameron, III (the "Stockholders'
Representative") a draft Closing Statement substantially in the form of Exhibit
C setting forth (x) the balance sheet of the Company at the close of business on
the Measurement Date, which shall be prepared using the procedures and
methodologies set forth in Exhibit C, and (y) Siemens' calculation (based on the
amounts set forth on the balance sheet) of the Closing Liquid Net Worth
Adjustment.

          (b) Subject to the provisions of paragraph (c) below, the
Stockholders' Representative shall have 15 days from the date of delivery of the
Closing Statement to review and approve the Closing Statement. If the
Stockholders' Representative agrees with Siemens' calculation of the Closing
Liquid Net Worth Adjustment contained in the Closing Statement, the
Stockholders' Representative shall promptly so advise Siemens in writing, in
which event the Closing Liquid Net Worth Adjustment shall be deemed final and
the Adjusted Acquisition Price shall be calculated and deposited with the
Payment Agent in accordance with Section 2.3.


          (c) If the Stockholders' Representative in good faith disagrees with
the calculation of the Closing Liquid Net Worth Adjustment set forth in the
Closing Statement, the Stockholders' Representative shall notify Siemens in
writing (the "Notice of Disagreement") of such disagreement within 15 days after
delivery of the Closing Statement. The Notice of Disagreement shall set forth in
reasonable detail the basis for the disagreement. Thereafter, Siemens and the
Stockholders' Representative shall attempt in good faith to resolve and finally
determine the Closing Liquid Net Worth Adjustment. If Siemens and the
Stockholders' Representative are unable to resolve the disagreement within 10
days after the delivery of the Notice of Disagreement, Siemens and the
Stockholders' Representative shall appoint PriceWaterhouse Coopers (the
"Independent Accountant") to resolve the disputed items and make a determination
with respect thereto. Such determination will be made, and written notice
thereof given to Siemens and the Stockholders' Representative, within 30 days
after such selection. The determination by the Independent Accountant shall be
final, binding and conclusive upon the parties hereto. The scope of the
Independent Accountant's engagement (which shall not be an audit) shall be
limited to the resolution of the items contained in the Notice of Disagreement,
and the recalculation, if any, of the Closing Liquid Net Worth Adjustment in
light of such resolution and such firm shall be deemed to be acting as experts
and not as arbitrators. In their review of the Closing Statement and
recalculation of the Closing Liquid Net Worth Adjustment, the Independent
Accountant will be limited to using the procedures and methodologies set forth
in Exhibit C. The fees, costs and expenses of the Independent Accountant, if
any, will be borne equally by Siemens and the Stockholders' Representative (it
being understood that the Stockholders' Representative's portion thereof shall
be one of the expenses for which he is entitled to receive reimbursement in
accordance with the terms of the Escrow Agreement). Within five days of delivery
of a notice of determination by the Independent Accountant as described above,
the applicable portions of the Adjusted Acquisition Price (calculated using the
Closing Liquid Net Worth Adjustment so determined by the Independent Accountant)
shall be delivered or made available to the Payment Agent, the Escrow Agent, the
Stockholders' Representative and/or the Tax Escrow Agent, as the case may be, in
accordance with Section 2.3.


     2.3 Deposits of Funds at and following the Closing.

          (a) On the date (the "Initial Distribution Date") which is the later
to occur of (i) the date on which the Adjusted Acquisition Price is determined
pursuant to the provisions of Section 2.2 or (ii) the


                                       6
<PAGE>   13
Effective Time, (x) Siemens shall deposit with the Escrow Agent funds in an
amount equal to the Indemnity Amount, (y) if the Tax Insurance Election is not
made, Siemens shall deposit with the Stockholders' Representative, the
Stockholders' Representative Expense Amount, if any, and shall deposit with the
Payment Agent the balance, if any, of the aggregate Merger Price and the
aggregate Incremental Amount, if any, and (z) if the Tax Insurance Election is
made, Siemens: shall deposit with the Tax Escrow Agent the Tax Escrow Amount, if
any; shall deposit with the Stockholders' Representative, the Stockholders'
Representative Expense Amount, if any; and shall deposit with the Payment Agent
the balance, if any, of the aggregate Merger Price and the aggregate Incremental
Amount, if any.

     2.4 Payment for Certificates.

          (a) Exchange Fund. Siemens shall appoint the Payment Agent no later
than the Closing Date. The Payment Agent shall agree to hold the funds deposited
with it pursuant to Section 2.3 and, in its capacity as the Escrow Agent
pursuant to the Escrow Agreement and as the Tax Escrow Agent pursuant to the Tax
Escrow Agreement (such funds, together with earnings thereon, being referred to
herein as the "Exchange Fund"), for disbursement as provided in this Section
2.4.

          (b) Payment Procedures. As soon as reasonably practicable (and in any
event not later than five business days) after the Initial Distribution Date,
the Surviving Corporation shall cause to be mailed to each holder of record of a
certificate or certificates which immediately prior to the Effective Time
represented outstanding shares of Company Common Stock (the "Certificates")
whose shares are converted pursuant to Section 2.1(c) into the right to receive
the merger consideration described in Section 2.1(c), (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 Payment Agent and shall be in such form and have such other
provisions as the Surviving Corporation may reasonably specify) and (ii)
instructions for use in effecting the surrender of the Certificates in exchange
for the portions, if any, of the Merger Price and Incremental Amount, if any,
deposited with the Payment Agent on the Initial Distribution Date. Upon
surrender of a Certificate to the Payment Agent, together with such letter of
transmittal, duly executed and completed in accordance with its terms, the
holder of such Certificate shall be entitled to receive in exchange therefor a
check representing such portion, if any, of the Merger Price and Incremental
Amount, if any, per share of Company Common Stock represented thereby which such
holder has the right to receive pursuant to the provisions of Section 2.1(c),
and the Certificate so surrendered shall forthwith be cancelled. Except as
otherwise provided in this Agreement, the Tax Escrow Agreement or the Escrow
Agreement, in no event shall the holder of any Certificate be entitled to
receive interest on any funds to be received in the Merger. Until surrendered as
contemplated by this Section 2.4(b), each Certificate shall be deemed at all
times after the Effective Time to represent only the right to receive the merger
consideration provided for in this Agreement.

          (c) Tax Escrow Balance. As soon as reasonably practicable (and in any
event not later than five business days) following the end of the Tax Matters
Escrow Period, Siemens shall cause to be mailed to each Person entitled to a
portion of the Tax Escrow Balance pursuant to Section 2.1(c) a notice setting
forth (i) the amount of the Tax Escrow Balance and (ii) instructions for
obtaining the amount thereof to which each such Person is entitled pursuant to
Section 2.1(c) from the Payment Agent. Upon compliance by each such Person with
those instructions, such Person shall be entitled to be paid the applicable
amount due under Section 2.1(c). Except as expressly provided in the Tax Escrow
Agreement, in no event shall interest be paid on any such amount.

          (d) Remaining Escrow Balance. As soon as reasonably practicable (and
in any event not later than five business days) following the end of the Escrow
Period, Siemens shall cause to be mailed to each Person entitled to a portion of
the Remaining Escrow Balance pursuant to Section 2.1(c) a notice


                                       7
<PAGE>   14
setting forth (i) the amount of the Remaining Escrow Balance and (ii)
instructions for obtaining the amount thereof to which each such Person is
entitled pursuant to Section 2.1(c) from the Payment Agent. Upon compliance by
each such Person with those instructions, such Person shall be entitled to be
paid the applicable amount due under Section 2.1(c). Except as expressly
provided in the Escrow Agreement, in no event shall interest be paid on any such
amount.

          (e) No Further Ownership Rights in Company Common Stock. From and
after the Effective Time, the stock transfer books of the Company shall be
closed and there shall be no further registration of transfers on the stock
transfer books of the Surviving Corporation of the shares of Company Common
Stock which were outstanding immediately prior to the Effective Time. If, after
the Effective Time, Certificates are presented to the Surviving Corporation for
any reason, they shall be cancelled and exchanged as provided in this Section
2.4.

          (f) Termination of Exchange Fund. Any monies furnished to the Payment
Agent which remain undistributed to the stockholders of the Company for six
months after the date they are first furnished shall be delivered to Siemens,
upon demand, and any stockholders of the Company who have not theretofore
complied with this Section 2 shall thereafter look only to Siemens (subject to
abandoned property, escheat and other similar laws) as general creditors for
payment of their claim for the merger consideration. Neither Siemens nor the
Surviving Corporation shall be liable to any holder of shares of capital stock
of the Company for cash representing the merger consideration delivered to a
public official pursuant to any applicable abandoned property, escheat or
similar law.

3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. Except as set forth in the
relevant Section (determined in accordance with Section 11.13) of the disclosure
schedule (the "Disclosure Schedule") delivered by the Company to Siemens
concurrently with the execution of this Agreement, the Company represents and
warrants to Acquisition and to Siemens as follows:

     3.1 Organization. (a) The Company is a corporation duly organized, validly
existing and in good standing under the laws of the State of Delaware and has
all requisite power and authority to carry on its business as it has been and is
now being conducted and to own, use and lease its assets and properties. The
Company is duly qualified or licensed as a foreign corporation to do business
and is in good standing in each jurisdiction where the nature of its business or
the ownership, leasing or operation of its assets and properties makes such
qualification or licensing necessary, except where the failure to be so
qualified or licensed and in good standing would not have a Material Adverse
Effect.

          (b) Except for the Subsidiaries of the Company set forth in Section
3.5 of the Disclosure Schedule and as set forth in Section 3.1(b) of the
Disclosure Schedule, the Company does not, directly or indirectly, own any
equity or similar interest in or have any other ownership right in any other
Person, nor does it have any obligation to purchase any shares of stock, other
securities or other form of investment in any other Person.

     3.2 Capitalization. (a) As of the close of business on the business day
immediately preceding the date of this Agreement, the total authorized shares of
capital stock of the Company consisted solely of (i) 100,000,000 shares of
Company Common Stock, of which 32,814,724 shares were issued and outstanding,
and (ii) 2,000,000 shares of Preferred Stock, of which no shares were issued and
outstanding. The Preferred Stock and the Company Common Stock are sometimes
collectively referred to herein as the "Company Capital Stock." At the close of
business on the business day immediately preceding the date of this Agreement,
82,500 shares of Company Common Stock were held in treasury. No shares of
Company Capital Stock were issued after the close of business on the business
day immediately preceding the date of this Agreement, other than pursuant to the
exercise of Options outstanding as of the close of business on the business day
immediately preceding the date of this Agreement. As of the close


                                       8
<PAGE>   15
of business on the business day immediately preceding the date of this
Agreement, 9,916,681 shares of Company Common Stock were reserved for issuance
of which (i) 250,855 shares were reserved for issuance upon the exercise of a
warrant issued pursuant to a Warrant Agreement, dated July 15, 1997 between the
Company and IBMCC (the "1997 IBM Warrant"); (ii) 715,230 shares were reserved
for issuance upon the exercise of a warrant issued pursuant to a Warrant
Purchase Agreement, dated November 12, 1997 between the Company and Microsoft
Corp. (the "Microsoft Warrant") (all of the Warrant Agreements referred to
herein collectively being the "Warrant Agreements"); (iii) 8,926,915 shares were
reserved for issuance upon the exercise of outstanding stock options under the
Company Stock Plans; and (v) 23,681 shares were reserved for issuance pursuant
to the 1996 Non-Employee Director Stock Plan (the "NED Plan"). All the
outstanding shares of Company Common Stock have been duly and validly authorized
and issued and are fully paid and nonassessable. No shares of capital stock have
been issued by the Company at any time in violation of the preemptive rights of
any stockholder of the Company. All shares of capital stock previously issued by
the Company were offered, issued and sold in compliance with all applicable
Federal and state securities laws and regulations.

          (b) Section 3.2 of the Disclosure Schedule sets forth a complete and
accurate listing of all options, warrants, restricted stock grants and other
rights to acquire shares of Company Common Stock outstanding as of the date of
execution and delivery of this Agreement. There are no existing agreements,
subscriptions, options, warrants, calls, commitments, trusts (voting or
otherwise), or rights of any kind whatsoever between the Company and any Person,
and none of the foregoing exist granting any interest in or the right to
purchase or otherwise acquire from the Company or granting to the Company any
interest in or the right to purchase or otherwise acquire from any Person, at
any time, or upon the occurrence of any stated event, any securities of the
Company, whether or not presently issued or outstanding. There are no other
outstanding securities of the Company or any other entity which are convertible
into or exchangeable for other securities of the Company. There are no proxies,
agreements or understandings with respect to the voting of the shares of Company
Capital Stock to which the Company is a party or, to the knowledge of the
Company, to which any other Person is a party or any agreements, subscriptions,
options, warrants, calls, commitments or rights of any kind granting to any
Person the right to purchase or otherwise acquire from the Company any
securities so convertible or exchangeable. No Option or Warrant has an exercise
or strike price of less than $2.04 per share and each Option issued pursuant to
the Company's 1996 Performance Incentive Plan that has not been exercised as of
the Effective Time shall be exercisable solely for cash in an amount not in
excess of the Merger Price.

          (c) The Company has not:

               (i) since June 27, 1999, declared, set aside, made or paid any
dividend or other distribution, payable in cash, stock, property or otherwise
with respect to any of its capital stock;

               (ii) since June 27, 1999, reclassified, combined, split,
subdivided or redeemed, purchased (other than pursuant to the terms of any
restricted stock award) or otherwise acquired, directly or indirectly, any of
its capital stock;

               (iii) since the date of the latest balance sheet included in the
December Financial Statements, incurred any indebtedness for borrowed money or
issued any debt securities or assumed, guaranteed or endorsed, or otherwise as
an accommodation become responsible for, the obligations of any Person, or made
any loans or advances except pursuant to existing lines of credit or other
existing credit facilities in the ordinary course of business; or

               (iv) since June 27, 1999, entered into or amended any contract,
agreement, commitment or arrangement with respect to any matter set forth in
this Section 3.2(c)(iii).



                                       9
<PAGE>   16
          (d) All amounts of outstanding indebtedness owed by the Company are
repayable at any time without requiring the payment of any premium on the part
of the Company or resulting in any penalty to the Company.

     3.3 Authority. The Company has full corporate power and authority to enter
into this Agreement and, subject to obtaining the approval by its stockholders
of the adoption of this Agreement ("Stockholder Approval"), if and to the extent
required by the DGCL, to perform its obligations hereunder and to consummate the
transactions contemplated hereby. The execution, delivery and performance of
this Agreement by the Company and the consummation by the Company of the
transactions contemplated hereby have been duly authorized and approved by the
Company's Board of Directors and, subject to obtaining Stockholder Approval (if
and to the extent required by the DGCL) and except for the filing of the
Certificate of Merger pursuant to the DGCL, no other corporate proceedings on
the part of the Company or its stockholders are necessary to authorize the
execution, delivery and performance of this Agreement or the consummation of the
transactions contemplated hereby. This Agreement has been duly authorized,
executed and delivered by the Company and, subject to obtaining Stockholder
Approval, is the legal, valid and binding obligation of the Company, enforceable
against the Company in accordance with its terms, except as enforceability may
be limited by applicable bankruptcy, insolvency, reorganization, moratorium or
similar laws affecting the enforcement of creditors rights generally and by the
effect of general principles of equity (regardless of whether enforcement is
considered in a proceeding in equity or at law).

     3.4 No Conflicts; Governmental Requirements; SEC Documents. (a) The
execution, delivery and performance by the Company of this Agreement and the
consummation of the Merger do not, and will not, subject to obtaining the
Stockholder Approval, (i) violate or conflict with any provision of the
Certificate of Incorporation or By-Laws of the Company, (ii) violate any law,
rule, regulation, order, writ, injunction, judgment or decree of any court,
governmental authority or regulatory agency, or (iii) result in a violation or
breach of, or constitute (with or without due notice or lapse of time or both) a
default (or give rise to any right of termination, cancellation or
acceleration), or require any consent, approval or notice under, any note, bond,
indenture, license, lien, franchise, mortgage, contract, lease, permit, guaranty
or other agreement, instrument or obligation listed on Section 3.12 of the
Disclosure Schedule to which the Company is a party or by which any of its
assets or properties may be bound.

          (b) Except for (i) the filing with the Securities and Exchange
Commission (the "SEC") of an Information Statement pursuant to Regulation 14C
under the Exchange Act in respect of the Stockholder Approval (as amended or
supplemented from time to time, the "Information Statement"), if required, the
14(f) Material and such reports under Section 13 of the Exchange Act, as may be
required in connection with this Agreement and the transactions contemplated by
this Agreement, (ii) the filing of a premerger notification report by the
Company under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
amended, and the rules and regulations thereunder (the "HSR Act"), (iii) the
filing of the Certificate of Merger pursuant to the DGCL and (iv) any other
consents, approvals, authorizations, permissions, notices or filings which if
not obtained or made would not (individually or in the aggregate) have a
Material Adverse Effect or materially delay or hinder or render unlawful the
consummation of the Merger or the other transactions contemplated by this
Agreement, the execution and delivery of this Agreement by the Company do not
and the performance by the Company of this Agreement will not, require any
consent, approval, authorization or permission of, or filing with or
notification to, any governmental or regulatory authority, domestic or foreign.

          (c) The Company has filed all required reports, schedules, forms,
statements and other documents with the SEC since December 3, 1997 (the "Company
SEC Documents"). All of the Company SEC Documents (other than preliminary
materials or materials that were subsequently amended), as of their respective
filing dates, complied in all material respects with all applicable


                                       10
<PAGE>   17
requirements of the Securities Act of 1933, as amended (the "Securities Act")
and the Exchange Act and, in each case, the rules and regulations promulgated
thereunder applicable to such Company SEC Documents. None of the Company SEC
Documents at the time of filing contained any untrue statement of a material
fact or omitted 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 were made, not misleading, except to the extent such statements
have been amended, modified or superseded by later filed Company SEC Documents.
None of the Company SEC Documents is the subject of any confidential treatment
request by the Company. Section 3.4(c) of the Disclosure Schedule lists all of
the Company SEC Documents filed with the SEC since June 27, 1999.

          (d) The Company has furnished to Siemens and Acquisition copies of all
notices, documents, requests, court papers, or other materials given to or
received from any governmental agency or any other third party with respect to
the transactions contemplated by this Agreement.

     3.5 Subsidiaries. Section 3.5 of the Disclosure Schedule lists the name of
each Subsidiary and all lines of business in which each Subsidiary is
participating or engaged. Each Subsidiary is a corporation duly organized,
validly existing and in good standing under the laws of its jurisdiction of
incorporation identified in Section 3.5 of the Disclosure Schedule, and has all
requisite power and authority to carry on its business as it has been and is now
being conducted and to own, use and lease its assets and properties. Each
Subsidiary is duly qualified or licensed as a foreign corporation to do business
and is in good standing in each jurisdiction specified in Section 3.5 of the
Disclosure Schedule, which are the only jurisdictions in which nature of its
business or the ownership, leasing or operation of such Subsidiary's assets and
properties makes such qualification or licensing necessary, except where the
failure to be so qualified or licensed and in good standing, would not have a
Material Adverse Effect. Section 3.5 of the Disclosure Schedule lists for each
Subsidiary the amount of its authorized capital stock, the amount of its
outstanding capital stock and the record owners of such outstanding capital
stock. All of the outstanding shares of capital stock of each Subsidiary have
been duly authorized and validly issued, are fully paid and nonassessable, and
are owned, beneficially and of record, by the Company or Subsidiaries wholly
owned by the Company free and clear of all Liens. There are no existing
agreements, subscriptions, options, warrants, calls, commitments, trusts (voting
or otherwise), or rights of any kind whatsoever between the Company or any
Subsidiary on the one hand and any Person on the other hand with respect to the
capital stock of any Subsidiary. The name of each director and officer of each
Subsidiary on the date hereof, and the position with such Subsidiary held by
each, are listed in Section 3.5 of the Disclosure Schedule.

     3.6 Books and Records. The minute books and other similar records of the
Company and the Subsidiaries as made available to Siemens prior to the execution
of this Agreement contain a true and complete record, in all material respects,
of all actions taken at all meetings and by all written consents in lieu of
meetings of the stockholders, the boards of directors and committees of the
boards of directors of the Company and the Subsidiaries. The stock transfer
ledgers and other similar records of the Company and the Subsidiaries as made
available to Siemens prior to the execution of this Agreement contain true and
complete records, in all material respects, of all stock transfers related to
the Company's or any Subsidiary's capital stock. The Company has previously
furnished to Siemens true, complete and correct copies of the Certificate of
Incorporation and the By-Laws of the Company and each Subsidiary as in effect on
the date hereof.

     3.7 Financial Statements. The consolidated financial statements of the
Company included in the Company SEC Documents complied as to form in all
material respects with applicable accounting requirements and the published
rules and regulations of the SEC with respect thereto, were prepared in
accordance with generally accepted accounting principles ("GAAP") (except, in
the case of interim financial statements, as permitted by the applicable rules
and regulations of the SEC) applied on a consistent basis during the periods
involved (except as may be indicated in the notes thereto) and fairly


                                       11
<PAGE>   18
presented in all material respects, the consolidated financial position of the
Company and the Subsidiaries taken as a whole, as of the dates thereof and the
consolidated results of operations and cash flows for the periods then ended
(subject, in the case of interim financial statements, to normal year-end
adjustments).

     3.8 Absence of Undisclosed Liabilities. Except as reflected in the
financial statements included in the Company's Quarterly Report on Form 10-Q for
the period ended December 26, 1999 (the "December Financial Statements") or as
set forth in the Company SEC Documents filed with the SEC prior to the date of
this Agreement, neither the Company nor any of its Subsidiaries has or has
incurred any liability or obligation of any nature (whether absolute, accrued,
contingent or otherwise) other than liabilities or obligations (other than
obligations for borrowed money or in respect of capitalized leases) reasonably
incurred after December 26, 1999 in the ordinary course of business.

     3.9 Operations and Obligations. Except as disclosed in the Company SEC
Documents filed with the SEC since June 27, 1999 and prior to the date of this
Agreement, since June 27, 1999:

          (a) there has been no impairment, damage, destruction, loss or claim,
whether or not covered by insurance, or condemnation or other taking adversely
affecting in any respect any of the Company's or any Subsidiary's material
assets;

          (b) the Company has not made any material wage or salary increase or
other compensation payable or to become payable or bonus, or material increase
in any other direct or indirect compensation, for or to any of its officers,
directors, employees, independent contractors, consultants, agents or other
representatives, or any accrual for or commitment or agreement to make or pay
the same, other than the increases made in the ordinary course consistent with
past practice,

          (c) prior to the date of this Agreement, the Company has not received
any notice from any customer or group of customers with whom the Company has a
contract or agreement disclosed on Section 3.12 of the Disclosure Schedule
stating that such customer or group of customers has ceased, or will cease, to
use the products, equipment, goods or services of the Company, or has
substantially reduced or will substantially reduce, the use of such products,
equipment, goods or services at any time.

          (d) the Company has not failed to pay or perform, or delayed its
payment or performance of, any obligation in a manner materially inconsistent
with its past practice, and

          (e) the Company and each of its Subsidiaries have conducted its
business only in the ordinary course.

     3.10 Properties. (a) Section 3.10 of the Disclosure Schedule contains a
true, complete and correct list (designating the relevant owners, lessors and
lessees) of (i) all real property owned, leased or subleased by the Company or
any Subsidiary and (ii) all equipment, fixtures and other personal property
owned, leased, subleased or managed by the Company or any Subsidiary which, in
the case of clause (ii) only, has a net book value or commitment in excess of
$50,000. Copies of all real and personal property leases and deeds of the
Company and each Subsidiary relating to the property identified on Section 3.10
of the Disclosure Schedule have been delivered or made available to Siemens by
the Company.

          (b) With respect to real property leased or subleased by the Company
or any Subsidiary, the Company or such Subsidiary has a valid leasehold interest
in such real property, and the leasehold or other interest of the Company or
such Subsidiary in such real property is not subject or subordinate to any Lien.
Neither the Company nor any applicable Subsidiary is in default in any material
respect under any such lease, or sublease and, to the Company's knowledge, the
other party or parties thereto are not in default of its or their obligations
thereunder nor does any such party have the right to


                                       12
<PAGE>   19
terminate prior to its scheduled expiration the term of any such lease or
sublease as a result of the transactions contemplated by this Agreement.

          (c) Neither the Company nor any Subsidiary has received any written
notice that the whole nor any part of any real property owned, leased,
subleased, used or occupied by the Company or any Subsidiary is subject to any
pending suit for condemnation or other taking by any public authority, and, to
the Company's knowledge, no such condemnation or other taking is currently
threatened or contemplated. The properties owned, leased or subleased by the
Company and its Subsidiaries are sufficient to conduct the operations of the
Company and its Subsidiaries as currently conducted, and the foregoing personal
properties are in good operating condition and repair, normal wear and tear
excepted.

          (d) Except as disclosed in the December Financial Statements, the
Company or a Subsidiary owns outright or has good and marketable fee title to or
a valid leasehold or license interest in all of its respective assets and
properties (including, without limitation, those reflected as assets on the
balance sheet included in the December Financial Statements), in each case free
and clear of any Lien. The Company, together with its Subsidiaries, has all
necessary assets, equipment and properties to engage in the business as
currently conducted and proposed to be conducted by the Company.

     3.11 Accounts Receivable; Accounts Payable; Inventory. (a) All accounts
receivable of the Company and the Subsidiaries have arisen from bona fide
transactions by the Company and the Subsidiaries in the ordinary course of their
business.

          (b) Section 3.11 of the Disclosure Schedule sets forth a true and
correct list of each account payable of the Company and each Subsidiary, in each
case in excess of $10,000 (and the age of such payable), as of the second
business day immediately preceding the date of this Agreement.

          (c) The inventories (and any reserves with respect thereto that have
been established by the Company or a Subsidiary) of the Company and the
Subsidiaries as of the date of the latest balance sheet included in the December
Financial Statements are described in Section 3.11 of the Disclosure Schedule.
All such inventories (net of any such reserves) are (i) of such quality as to be
useable in the ordinary course of business (subject in the case of
work-in-process inventory to completion in the ordinary course of business), and
(ii) are reflected in the latest balance sheet included in the December
Financial Statements and in the books and records of the Company at the moving
weighted average based on latest purchases.

     3.12 Contracts. (a) Neither the Company nor any Subsidiary nor, in the case
of (xiii) below, any Affiliate of the Company, is a party to or is bound by:

               (i) any contract or commitment (other than those with respect to
which the Company has not yet received an invoice as of the close of business on
the second business day immediately preceding the date of this Agreement) which
creates an obligation on the part of the Company or any Subsidiary in excess of
$200,000;

               (ii) any contract or commitment which obligates the Company or
any Subsidiary to deliver any hardware, software, technology or services or
rights related thereto and which has generated, within the twelve months
preceding the date of this Agreement, or is forecasted to generate, within the
twelve month period after the date of this Agreement, revenue (excluding revenue
from discontinued operations) in excess of $1,000,000;



                                       13
<PAGE>   20
               (iii) any waiver or release of the Company's or any Subsidiary's
rights (other than those related to discontinued operations) against a third
party (other than immaterial rights) within the past six months;

               (iv) any debt instrument, including, without limitation, any loan
agreement, line of credit, promissory note, security agreement or other evidence
of indebtedness, where the Company or any Subsidiary is a lender, borrower or
guarantor, in a principal amount in excess of $50,000;

               (v) any contract or commitment restricting the Company, any
Subsidiary or, to the knowledge of the Company, any of their respective
employees of the title of Senior Vice President or higher from engaging in any
activity or line of business or competing with any Person or limiting the
ability of any Person to compete with the Company or any Subsidiary;

               (vi) any alliance, cooperation, joint venture, stockholders'
partnership or similar agreement;

               (vii) any research, development, distributorship, sales agency,
sales representative, marketing or reseller agreement related to the business or
technology of the Company;

               (viii) any agreement, option or commitment or right with, or held
by, any third party to acquire, use or have access to any assets or properties,
or any interest therein, of the Company or any Subsidiary;

               (ix) any employment, severance or consulting contract which is
material to the business of the Company or its Subsidiaries;

               (x) any agreement which, if terminated, would reasonably be
expected to result in a Material Adverse Effect;

               (xi) any material license, sublicense, development, support or
maintenance agreement;

               (xii) any agreement relating to common or preferred stock issued
by the Company or any Subsidiary;

               (xiii) any agreement which provides rights to parties other than
the Company or any Subsidiary which are contingent upon a merger, consolidation
or other "change-in-control" of the Company;

               (xiv) any agreement containing confidentiality and non-disclosure
obligations from the Company which, if violated, could reasonably be expected to
result in a Material Adverse Effect; or

               (xv) any other agreement that (A) involves the payment or
potential payment, pursuant to the terms of any such agreement, by or to the
Company or any Subsidiary of more than $200,000 and (B) cannot be terminated
within 60 calendar days after giving notice of termination without resulting in
any material cost or penalty to the Company or any Subsidiary.

          (b) The agreements listed in Section 3.12 of the Disclosure Schedule
are all the material agreements relating to the ownership or operation of the
currently conducted and contemplated business of the Company or to the property
presently held or used by the Company or any Subsidiary or to which


                                       14
<PAGE>   21
the Company or any Subsidiary is a party or to which it or any of its properties
and assets is subject or bound. The Company has previously delivered (or made
available) true, complete and correct copies of all such agreements (including
all amendments) to Siemens (or, in the case of oral agreements only, true,
complete and correct descriptions thereof have been set forth in Section 3.12 of
the Disclosure Schedule). Neither the Company nor any Subsidiary is or, to the
knowledge of the Company, is alleged to be, and, to the knowledge of the Company
and its Subsidiaries, no other party to any such agreement is, in default in any
material respect under any such agreement and, except as contemplated by this
Agreement, after the Merger all of such agreements will remain in full force and
effect, except for agreements which, by their terms, terminate prior to the
consummation of the Merger. No additional consideration shall be due under such
contracts as a result of the Merger and neither the Company nor any Subsidiary
is currently renegotiating any such agreement or paying liquidated damages in
lieu thereof.

     3.13 [INTENTIONALLY OMITTED].

     3.14 Litigation. (a) As of the date hereof: (i) there are no actions,
suits, arbitrations, legal or administrative proceedings pending or, to the
Company's knowledge, threatened against the Company or any Subsidiary which,
individually or in the aggregate, could have a Material Adverse Effect;

               (ii) neither the Company nor any Subsidiary is the subject of any
pending or, to the knowledge of the Company, threatened investigation by any
Governmental Entity; and

               (iii) neither the Company nor any Subsidiary nor the assets,
properties or business of the Company or any Subsidiary is subject to any
judgment, order, writ, injunction or decree of any court, governmental agency or
arbitration tribunal. Neither the Company nor any Subsidiary is the plaintiff in
any such proceeding and neither the Company nor any Subsidiary is contemplating
commencing legal action against any other Person.

          (b) There are no actions, suits, arbitrations, legal or administrative
proceedings pending or, to the Company's knowledge, threatened against any of
the officers or directors of the Company or any Subsidiary for which the Company
or any Subsidiary may have an obligation to provide indemnification.

     3.15 Compliance with Law; Authorizations. (a) The Company and each
Subsidiary have complied in all material respects with, and is not in violation
of, in any material respect, any law, ordinance or governmental rule or
regulation (collectively, "Laws") to which it or its business is subject.

          (b) The Company and each Subsidiary has obtained and currently holds
all material licenses, permits, certificates or other governmental
authorizations (collectively "Authorizations") necessary for the ownership or
use of its assets and properties and the conduct of its business.

          (c) The Company and each Subsidiary has complied in all material
respects with, and is not in violation in any material respect of, any
Authorization necessary for the ownership or use of its assets and properties or
the conduct of its business.

     3.16 Intellectual Property. (a) Section 3.16(a) of the Disclosure Schedule
contains a true and complete list of substantially all material Intellectual
Property owned and used in the business of the Company and its Subsidiaries
(other than the trademarks disclosed in Section 3.16(b) of the Disclosure
Schedule and the licensed software and license agreements disclosed in Section
3.12 of the Disclosure Schedule) and all known infringements by third parties of
such Intellectual Property. The Company and its Subsidiaries owns, and the
Surviving Corporation will, pursuant to the Merger, own, all right, title and
interest in and to all Intellectual Property, including that which is disclosed
in Section 3.16(a) of the


                                       15
<PAGE>   22
Disclosure Schedule, free and clear of all Liens, together with the right to sue
and assert claims for and recover damages and obtain any and all other remedies
available at law and in equity for any past, present and future infringement,
misappropriation or the violation of any such Intellectual Property (and settle
all such suits, actions and proceedings). Other than the trademarks disclosed in
Section 3.16(b) of the Disclosure Schedule and the licensed software and other
licensed Intellectual Property and rights disclosed in Section 3.12 of the
Disclosure Schedule, (i) the Company or its Subsidiaries have received and hold
all necessary assignments for and to such Intellectual Property, and there is
nothing which would prevent the Company and its Subsidiaries from assigning and
transferring all such Intellectual Property to Siemens and its Affiliates or to
the Surviving Corporation pursuant to the Merger, free and clear of all Liens;
(ii) the Company and its Subsidiaries claim and own all right, title and
interest in and to all copyright rights related to all works of authorship
created by its respective employees or hires including all works made for hire;
(iii) all registrations with and applications to Governmental Entities in
respect of such Intellectual Property are valid and in full force and effect and
are not subject to the payment of any Taxes or maintenance fees or the taking of
any other actions by the Company or its Subsidiaries to maintain their validity
or effectiveness or rights of Company and its Subsidiaries therein; (iv)there
are no restrictions on the direct or indirect assignment or transfer of any
contract, license, or any interest therein, held by the Company or its
Subsidiaries in respect of any Intellectual Property or rights therein including
pursuant to the Merger; (v) the Company has delivered to Siemens prior to the
date of this Agreement documentation with respect to any invention, process,
design, computer program or other know-how or trade secret included in such
Intellectual Property, which documentation is accurate in all material respects
and reasonably sufficient in detail and content to identify and explain such
invention, process, design, computer program or other know-how or trade secret
and to facilitate its full and proper use without reliance on the special
knowledge or memory of any Person, and to allow Siemens or the Surviving
Corporation, to seek statutory protection for the same including patent or
copyright protection for the same and Siemens, Acquisition or its nominee, shall
own and have pursuant to the Merger all rights to seek protection for and so
register such Intellectual Property if such protection is available; (vi) the
Company and its Subsidiaries have taken reasonable security measures to protect
the secrecy, confidentiality and value of their trade secrets; (vii) none of the
Company or its Subsidiaries is, or has received any notice that it is, in
default (or with the giving of notice or lapse of time or both, would be in
default) under any contract relating to such Intellectual Property; and (viii)
to the knowledge of the Company and its Subsidiaries, no such Intellectual
Property has been or is being infringed or has been misappropriated by any other
Person. Neither the Company nor its Subsidiaries has received notice that it is
infringing or has misappropriated any Intellectual Property of any other Person.
To the knowledge of the Company and its Subsidiaries, no claim is pending,
anticipated or has been made, to such effect that has not been resolved and none
of the Company or its Subsidiaries is infringing or has misappropriated any
Intellectual Property of any other Person.

          (b) Section 3.16(b) of the Disclosure Schedule contains a true and
complete list of all trademarks owned or used by the Company and its
Subsidiaries (the "Trademarks"); while it may be possible, to the best knowledge
of the Company, there are no other trademarks which may have been adopted by any
Subsidiary of Company for use in such Subsidiary's business. The Company owns
all right, title and interest in the Trademarks free and clear of all Liens,
including all rights to sue and assert claims for and recover damages and obtain
any and all other remedies available at law and equity for any past, present,
and future infringement, misappropriation or other violation of any such
Trademarks (and settle all such suits, actions and proceedings). In addition,
(i) the Company and its Subsidiaries have exclusive rights to use such
Trademarks in the territories wherein they are registered or where an
application for registration is pending with respect to the goods described, and
have received and hold all necessary assignments for and to such Trademarks, and
to the knowledge of the Company, there is nothing which would prevent the
Company and its Subsidiaries from assigning and transferring all right, title
and interest in and to such Trademarks, and to the knowledge of the Company,
there is nothing which would prevent the Company and its Subsidiaries from
assigning and transferring all right, title and


                                       16
<PAGE>   23
interest in and to such Trademarks and the goodwill of the business associated
therewith, to Siemens, Acquisition or its nominee, free and clear of all Liens
and encumbrances; (ii) all registrations with and applications to Governmental
Entities are disclosed in Section 3.16(b) of the Disclosure Schedule, including
expiration and renewal dates and dates when any affidavits or fees may be due to
maintain such registrations; (iii) there are no restrictions on the use or
direct or indirect transfer of any interest therein, and (iv) the Company has
made available to Siemens prior to the date of this Agreement documentation with
respect to such Trademarks, which documentation is sufficient and complete in
all material respects and reasonably sufficient in detail and content to
identify and disclose the condition and rights of the Company or any Persons
(including material Trademark search or watch reports) in and to such
Trademarks. The Company repeats its representations and warranties as per
clauses (vi), (vii) and (viii) of paragraph (a) above with respect to the
Trademarks. Any trademark rights licensed to or by the Company are disclosed in
Section 3.12 of the Disclosure Schedule; the Company has previously provided
Siemens with copies of the written terms under which limited permission has been
given by the Company and its Subsidiaries to third parties to use a trademark of
the Company to publicize that such respective third party is actively engaged
with or by the Company to distribute, service, support and maintain the products
of the Company.

     3.17 Tax Matters. (a)(i) The Company and each Subsidiary have timely filed
all material Tax Returns required to be filed; (ii) all such Tax Returns are
true, complete and accurate in all material respects and all material Taxes
shown to be due on such Tax Returns or otherwise due have been timely paid, have
been fully reserved on the latest balance sheet included in the December
Financial Statements or will be fully reserved by the Measurement Date; (iii)
neither the Company nor any Subsidiary has waived or has been requested in
writing to waive (or agreed to any extension of) any limitations period in
respect of Taxes; (iv) no adjustment relating to such Tax Returns has been
proposed in writing by any Tax authority (insofar as it relates to the
activities or income of the Company or any Subsidiary); (v) there are no pending
or, to the knowledge of the Company, threatened actions or proceedings for the
assessment or collection of Taxes against the Company or any Subsidiary; (vi)
the Company is not a party to any Tax sharing or Tax allocation agreement, and
has no obligation under any Tax indemnity arrangement; (vii) there are no liens
for Taxes upon the assets of the Company or any Subsidiary (other than liens for
property taxes not yet due and payable); (viii) all material Taxes which the
Company or any Subsidiary is required by law to withhold or to collect for
payment have been duly withheld and collected, and have been paid or accrued, or
reserved against and entered on the books of the Company or such Subsidiary in
accordance with GAAP; (ix) neither the Company nor any Subsidiary is a party to
any agreement or arrangement that would result, separately or in the aggregate,
in the payment of any "excess parachute payments" within the meaning of Section
280G of the Code; (x) no acceleration of the vesting schedule for any property
that is substantially unvested within the meaning of the regulations under
Section 83 of the Code will occur in connection with the transactions
contemplated by this Agreement; (xi) the Company has not been a United States
real property holding corporation within the meaning of Section 897(c)(2) of the
Code during the applicable period specified in Section 897(c)(1)(A)(ii) of the
Code; and (xii) neither the Company nor any Subsidiary has been liable for any
accumulated earnings tax penalty or personal holding company tax.

          (b) The Company (i) has not agreed to and is not required to make any
adjustment pursuant to Section 481(a) of the Code; (ii) has no knowledge that
the Internal Revenue Service ("IRS") has proposed any such adjustment or change
in accounting method with respect to the Company; and (iii) does not have any
application pending with the IRS or any other tax authority requesting
permission for any change in accounting method.

          (c) Neither the Company nor any Subsidiary has income reportable for a
period beginning after the Measurement Date but attributable to a transaction
which resulted in the reporting of such income for financial accounting purposes
in a period ending on or prior to the Measurement Date.



                                       17
<PAGE>   24
          (d) (i) There are no written requests for information from any Tax
authority currently outstanding that could affect the Taxes of the Company or
any Subsidiary; (ii) there are no proposed reassessments in writing of any
property owned by the Company or any Subsidiary that could increase the amount
of any Tax to which the Company or any Subsidiary would be subject and (iii) no
power of attorney that is currently in force has been granted by the Company or
any Subsidiary with respect to any matter relating to Taxes.

          (e) (i) Section 3.17 of the Disclosure Schedule contains a complete
and accurate list of the jurisdictions in which Tax Returns have been filed on
the basis of a unitary group, indicates the most recent Tax Return for each
relevant jurisdiction for which an audit has been completed and indicates all
Tax Returns that currently are the subject of audit; and (ii) the Company has
delivered or made available to Siemens correct and complete copies of all Tax
Returns, examination reports, and statements of deficiencies assessed against or
agreed to by the Company and any Subsidiary for the past three taxable years.

          (f) Except in respect of the affiliated, consolidated, combined,
unitary or similar group of which the Company or any Subsidiary currently is a
member, neither the Company nor any Subsidiary (i) is or has been a member of an
affiliated group (within the meaning of Section 1504(a)(1) of the Code) or (ii)
has filed or been required to file or been included on or required to be
included on a consolidated federal income tax return or any state Tax Return on
a consolidated, combined or unitary basis.

          (g) The provisions for Taxes reflected on the balance sheet included
in the December Financial Statements are sufficient to cover all liabilities in
respect of Taxes for all periods through December 31, 1999 (without regard to
the materiality thereof).

          (h) Neither the Company nor any Subsidiary (i) owns an interest in any
domestic international sales corporation, foreign sales corporation, controlled
foreign corporation, or passive foreign investment company; (ii) has or is
currently projected to have an amount includable in its income for the current
taxable year under Section 951 or Section 551 of the Code, (iii) has an
unrecaptured overall foreign loss within the meaning of Section 904(f) of the
Code or (iv) has participated in or cooperated with an international boycott
within the meaning of Section 999 of the Code.

          (i) Neither the Company nor any
Subsidiary is a party (other than as an investor) to any industrial development
bond.

Notwithstanding anything to the contrary in this Section 3.17, the Company makes
no representation regarding the validity of any of the net operating losses of
the Company or any of its Subsidiaries or the ability of the Company or any of
its Subsidiaries to utilize such net operating losses in any pre or post
Measurement Date period.

     3.18 Employee Benefit Plans. (a) Section 3.18 of the Disclosure Schedule
contains a complete and accurate list and description of all "employee pension
benefit plans" (as defined in Section 3(2) of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA")) (sometimes referred to as "Pension
Plans"), "employee welfare benefit plans" (as defined in Section 3(1) of ERISA)
(sometimes referred to as "Welfare Plans") and all other Benefit Plans (together
with the Pension Plans and Welfare Plans, the "Plans") maintained, or
contributed to, during the past two years by the Company or any Person that,
together with the Company, is treated as a single employer under Section 414(b),
(c), (m) or (o) of the Code (the Company and each such other Person, a "Commonly
Controlled Entity") for the benefit of any current or any former employees,
officers, consultants or directors of the Company. The Company has made
available to Siemens true, complete and correct copies of (i) each Plan, (ii)
the most recent annual report on Form 5500 filed with the Internal Revenue
Service with respect to each Plan


                                       18
<PAGE>   25
(if any such report was required), (iii) the most recent summary plan
description for each Plan for which a summary plan description is required, (iv)
each trust agreement and group annuity contract relating to any Plan and (v) all
material correspondence with the IRS or the United States Department of Labor
relating to any outstanding controversy or audit. Except as would not have a
Material Adverse Effect, each Plan has been administered in accordance with its
terms. Except as would not have a Material Adverse Effect, the Company and all
Plans are in compliance with applicable provisions of ERISA and, with respect to
the Plans, the Code.

          (b) Except as would not have a Material Adverse Effect, all Pension
Plans that are intended to be qualified under Section 401(a) of the Code have
been the subject of determination, opinion, notification or advisory letters
from the IRS to the effect that such Pension Plans are so qualified and are
exempt from Federal income taxes under Section 501(a) of the Code, and no such
determination letter has been revoked nor has any event occurred since the date
of such Plan's most recent determination letter that would reasonably be
expected to adversely affect its qualification.

          (c) Neither the Company nor any Commonly Controlled Entity has within
the previous five years, maintained, contributed to or been obligated to
contribute to any Plan that is subject to Title IV of ERISA including, without
limitation any multi-employer plan (as defined in Section 3 (37) of ERISA).

          (d) Except as would not have a Material Adverse Effect, neither the
Company nor any Subsidiary has any liability or obligation under any Welfare
Plan to provide life insurance or medical or health benefits after termination
of employment to any employee or dependent other than as required by Part 6 of
Title I of ERISA. Except as set forth on Section 3.18(d) of the Disclosure
Schedule, no Plan that provides health or medical benefits are self-insured, and
no claims for such benefits could result in an uninsured liability to the
Company, any Subsidiary, the Surviving Corporation or Siemens.

          (e) Except as provided by this Agreement, no employee of the Company
or any Subsidiary will be entitled to any additional compensation or benefits or
any acceleration of the time of payment or vesting of any compensation or
benefits under any Plan as a result of the transactions contemplated by this
Agreement.

          (f) Except as would not have a Material Adverse Effect, neither the
Company nor any Subsidiary has engaged in any non-exempt prohibited transactions
under ERISA and there are no violations or claims relating to the Plans except
in the ordinary course of business.

          (g) There is no investigation by any governmental or regulatory
authority or any proceeding or other claim, action (other than claims for
benefits in the normal operations of the Benefit Plans), suit or proceeding
against or involving any Benefit Plan or asserting any right or claim to
benefits which is likely to be adversely determined and which, if so determined,
would reasonably be expected to have a Material Adverse Effect.

          (h) All contributions, premiums and other payments required by law or
any Plan or applicable collective bargaining agreement to have been made under
any such Plan or agreement to any fund, trust or account established thereunder
or in connection therewith have been made by the due date thereof.

          (i) Without limiting any other provision of this Section 3.18, except
as would not have a Material Adverse Effect, no event has occurred and no
condition exists, with respect to any Plan (whether or not maintained by the
Company or the Surviving Corporation), that has subjected or could subject the
Company, any Subsidiary, the Surviving Corporation or Siemens, or any Plan or
any successor thereto, to any material tax, fine, penalty or other liability
(other than, in the case of the Company, the


                                       19
<PAGE>   26
Subsidiaries and the Plans, a liability arising in the normal course to make
contributions or payments, as applicable, when ordinarily due under a Plan with
respect to employees or former employees of the Company or any Subsidiary).
Except as would not have a Material Adverse Effect, no event has occurred and no
condition exists, with respect to any Plan that could subject Siemens or any of
its Affiliates, or any plan maintained by Siemens or any Affiliate thereof, to
any material tax, fine, penalty or other liability, that would not have been
incurred by Siemens or any of its Affiliates, or any such Plan, but for the
transactions contemplated hereby. No employee benefit plan other than a Plan is
or will be directly or indirectly binding on the Surviving Corporation solely by
virtue of the transactions contemplated hereby. Siemens, and its Affiliates,
including on and after the Closing, the Surviving Corporation, shall have no
material liability for, under, with respect to or otherwise in connection with
any employee plan, which liability arises under ERISA or the Code, by virtue of
the Company or any Subsidiary being aggregated in a controlled group or
affiliated service group with any Commonly Controlled Entity for purposes of
ERISA or the Code at any relevant time prior to the Closing. Each Plan may be
amended and terminated in accordance with its terms. As of the Effective Time,
no Plan will have any participants who are not employees of the Company or its
Subsidiaries.

     3.19 Employee Compensation. Section 3.19 of the Disclosure Schedule
contains a complete and accurate list (organized by individual for persons whose
annual rate of compensation exceeds $75,000 and by category for all other
persons) of the titles and current annual salary rates of and bonuses paid or
payable to all present officers, employees, consultants, contractors and other
individuals who perform services for the Company or any Subsidiary
("Employees").

     3.20 Employees.

          (a) Except as would not have a Material Adverse Effect, (i) the
Company and each of its Subsidiaries has complied with all applicable laws,
rules and regulations respecting employment and employment practices, terms and
conditions of employment, wages and hours, and neither the Company nor any
Subsidiary is liable for any arrears of wages or any taxes or penalties for
failure to comply with any such laws, rules or regulations; (ii) the Company
believes that its relations with each of its employees is satisfactory; (iii)
there are no controversies pending or, to the knowledge of the Company,
threatened between the Company or any of its Subsidiaries and any of their
respective employees; (iv) neither the Company nor any Subsidiary is a party to
any collective bargaining agreement or other labor union contract applicable to
persons employed by the Company or such Subsidiary, nor, to the knowledge of the
Company, are there any activities or proceedings of any labor union to organize
any such employees; (v) there are no unfair labor practice complaints pending
or, to the knowledge of the Company, threatened against the Company or any
Subsidiary before the National Labor Relations Board or any current union
representation questions involving employees of the Company or any Subsidiary;
(vi) there is no strike, slowdown, work stoppage or lockout existing, or, to the
knowledge of the Company, threatened, by or with respect to any employees of the
Company or any Subsidiary; (vii) no charges are pending or to the knowledge of
the Company threatened before the Equal Employment Opportunity Commission or any
state, local or foreign agency responsible for the prevention of unlawful
employment practices with respect to the Company or any Subsidiary; (viii) there
are no claims pending against the Company or any Subsidiary before any workers'
compensation board; and (ix) neither the Company nor any Subsidiary has received
notice that any federal, state, local or foreign agency responsible for the
enforcement of labor or employment laws intends to conduct an investigation of
or relating to the Company or any Subsidiary and, to the knowledge of the
Company, no such investigation is in progress.

          (b) Except as would not have a Material Adverse Effect, the Company
and each Subsidiary has properly classified for all purposes (including, without
limitation, for all Tax purposes and for purposes of determining eligibility to
participate in any employee benefit plan) all employees, leased employees,
consultants and independent contractors, and has withheld and paid all
applicable Taxes and


                                       20
<PAGE>   27
made all appropriate filings in connection with services provided by such
persons to the Company and each Subsidiary.

          (c) Except as set forth on Section 3.20(c) of the Disclosure Schedule,
every Employee (with the title of Senior Vice President and more senior) has
executed a Confidentiality/Non-Solicit Agreement in substantially the form
attached as Exhibit D hereto.

          (d) From September 26, 1999 through the date of this Agreement, the
annualized rate of employee resignations has not exceeded 35%.

          (e) The Company has inquired of each of its employees to determine
whether they are bound by any contract or commitment which restricts them from
engaging in any activity or competing with any Person and based on that inquiry
has no reason to believe that any such employee is so bound.

     3.21 Environmental Laws. Neither the Company nor any Subsidiary is in
material violation of, or materially delinquent with respect to any reporting or
other requirements under, any Environmental Law to which it or its assets,
properties, personnel or business are subject. Neither the Company nor any
Subsidiary has knowledge of any circumstances or conditions existing that may
prevent or interfere with such compliance in the future. The Company and each
Subsidiary have obtained all material permits, licenses and other authorizations
required under Environmental Laws and such permits, licenses and authorizations
are in full force and effect. There is no material Environmental Claim pending
or, to the knowledge of the Company, threatened against the Company or any
Subsidiary. There are no past or present actions, activities, circumstances,
conditions, events or incidents taken or caused by the Company or any of its
Subsidiaries, including, without limitation, the release, emission, discharge,
storage, transportation, generation, presence or disposal, or, to the knowledge
of the Company, any other Person, of any Hazardous Substance that could
reasonably be expected to result in any material Environmental Claim against the
Company or any Subsidiary. The Company has made available to Siemens all
material surveys, reports, assessments, audits, evaluations or other documents
relating to the presence, migration or disposal of any Hazardous Substance,
prepared for or at the request of the Company or any Subsidiary and relating to
the Company, any Subsidiary or any of their respective assets, properties or
businesses.

     3.22 Insurance. The Company previously has delivered or made available to
Siemens a complete and accurate list of all liability, property, workers'
compensation, directors' and officers' liability, "key man" life and other
insurance policies in effect that are owned by the Company or any Subsidiary, or
under which the Company or any Subsidiary is a named insured. Those policies and
the coverage thereunder are in full force and effect. The businesses of the
Company and its Subsidiaries are adequately insured against loss or damage in
kind and in an amount customarily obtained by similar businesses.

     3.23 Bank Accounts, Letters of Credit and Powers of Attorney. Section 3.23
of the Disclosure Schedule contains a complete and accurate list of (a) all bank
accounts, lock boxes and safe deposit boxes relating to the business and
operations of each of the Company and its Subsidiaries (including the name of
the bank or other institution where such account or box is located and the name
of each authorized signatory thereto), (b) all outstanding letters of credit
issued by financial institutions for the account of the Company and each
Subsidiary (setting forth, in each case, the financial institution issuing such
letter of credit, the maximum amount available under such letter of credit, the
terms (including the expiration date) of such letter of credit and the party or
parties in whose favor such letter of credit was issued), and (c) the name and
address of each Person who has a power of attorney to act on behalf of the
Company or any Subsidiary. The Company has heretofore delivered or made
available to Siemens true, correct and complete copies of each letter of credit
and each power of attorney described on Section 3.23 of the Disclosure Schedule.



                                       21
<PAGE>   28
     3.24 No Adverse Development. Since June 27, 1999 there has been no event,
circumstance, state of affairs, condition or development which the Company has
not disclosed to Siemens in writing which has had or could reasonably be
expected to have a Material Adverse Effect.

     3.25 Transactions with Affiliates. Except for transactions for compensation
of employees or as disclosed in the Company SEC Documents, every transaction
between the Company and any of its "affiliates" or their "associates" (as such
terms are defined in the rules and regulations of the SEC), which is currently
in effect and which involves the payment, or receipt, in the aggregate, of more
than $60,000 is set forth on Section 3.25 of the Disclosure Schedule.

     3.26 Information Statement; Merger Materials. None of the information
supplied or to be supplied by the Company in writing specifically for inclusion
in (i) the 14(f) Material or (ii) the Information Statement will, at the
respective times filed with the SEC and/or published, sent or given to holders
of Company Common Stock, as the case may be, and, in addition, in the case of
the Information Statement, at the date it or any amendment or supplement is
mailed to holders of Company Common Stock and 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 made therein,
in light of the circumstances under which they were made, not misleading.

     3.27 Brokers. Except for Lazard Freres LLP, whose fees, commission and
expenses are the sole responsibility of the Company, all negotiations relative
to this Agreement and the transactions contemplated hereby have been carried out
by the Company directly with Siemens and Acquisition without the intervention of
any Person on behalf of the Company in such manner as to give rise to any valid
claim by any Person against Siemens, Acquisition, the Company or any Subsidiary
for a finder's fee, brokerage commission or similar payment.

4. REPRESENTATIONS AND WARRANTIES OF SIEMENS AND ACQUISITION. Siemens and
Acquisition each represent and warrant to the Company as follows:

     4.1 Organization. Each of Siemens and Acquisition is a corporation duly
organized, validly existing and in good standing under the laws of its
jurisdiction of incorporation, and has all requisite corporate power and
authority to enter into and perform this Agreement and the transactions
contemplated hereby to be performed by it.

     4.2 Corporate Authority. Each of Siemens and Acquisition has full power and
authority to execute, deliver and perform this Agreement. The execution,
delivery and performance of this Agreement by it has been duly authorized and
approved on the part of Siemens and Acquisition by all necessary corporate
action and, except for the filing of appropriate merger documents as required by
the DGCL, no other corporate proceedings on the part of either Siemens or
Acquisition is necessary to authorize this Agreement and the transactions
contemplated hereby. This Agreement has been duly authorized, executed and
delivered by each of Siemens and Acquisition and is the legal, valid and binding
obligation of each of Siemens and Acquisition enforceable in accordance with its
terms, except as enforceability may be limited by applicable bankruptcy,
insolvency, reorganization, moratorium or similar laws affecting the enforcement
of creditors rights generally and by the effect of general principles of equity
(regardless of whether enforcement is considered in a proceeding in equity or at
law).

     4.3 No Breach. (a) The execution, delivery and performance by each of
Siemens and Acquisition of this Agreement and the consummation of the Merger do
not, and will not, (i) violate or conflict with any provision of the Certificate
of Incorporation or By-Laws of either Siemens or Acquisition; (ii) violate any
law, rule, regulation, order, writ, injunction, judgement or decree of any
court, governmental authority, or regulatory agency, except for violations
which, individually or in the


                                       22
<PAGE>   29
aggregate, will not have a material adverse effect on Siemens and Acquisition
taken as a whole; or (iii) result in a violation or breach of, or constitute
(with or without due notice or lapse of time or both) a default (or give rise to
any right of cancellation or acceleration), under, any material note, bond,
indenture, Lien, mortgage, contract, lease permit, guaranty or other agreement,
instrument or obligation to which Siemens or Acquisition is a party or by which
any of the properties of Siemens or Acquisition may be bound except for
violations which, individually or in the aggregate, will not have a material
adverse effect on Siemens and Acquisition taken as a whole.

          (b) Except for (i) the filing of a premerger notification report by
Siemens under the HSR Act, (ii) the filing of the Merger Certificate pursuant to
the DGCL and (ii) any other consents, approvals, authorizations, permissions,
notices or filings which if not obtained or made would not (individually or in
the aggregate) materially impair Siemens' ability to perform its obligations
under this Agreement or have a material adverse effect on the Surviving
Corporation, the execution and delivery of this Agreement by each of Siemens and
Acquisition does not and the performance by it of this Agreement will not,
require any consent, approval, authorization or permit of, or filing with or
notification to, any governmental or regulatory authority, domestic or foreign.

     4.4 Litigation. (a) Neither Siemens nor Acquisition is a party to any suit,
action, arbitration or legal, administrative, governmental or other proceeding
or investigation pending or to the knowledge of Siemens and Acquisition
threatened, which could adversely affect or restrict its ability to consummate
the transactions contemplated by this Agreement or to perform its obligations
hereunder.

          (b) There is no judgment, order, writ, injunction or decree of any
court, governmental agency or arbitration tribunal to which Siemens or
Acquisition is subject which might adversely affect or restrict its ability to
consummate the transactions contemplated by this Agreement or to perform its
obligations hereunder.

     4.5 Brokers. Except for Morgan Stanley Dean Witter, whose fees, commission
and expenses are the sole responsibility of Siemens, all negotiations relative
to this Agreement and the transactions contemplated hereby have been carried out
by Siemens directly with the Company without the intervention of any Person on
behalf of Siemens in such manner as to give rise to any valid claim by any
Person against Siemens, Acquisition, the Company or any Subsidiary for a
finder's fee, brokerage commission or similar payment.

     4.6 Information. None of the information supplied or to be supplied by
Siemens or Acquisition in writing specifically for inclusion in (i) the 14(f)
Material or (ii) the Information Statement will, at the respective times filed
with the SEC and/or published, sent or given to holders of Company Common Stock,
as the case may be, and, in addition, in the case of the Information Statement,
at the date it or any amendment or supplement is mailed to holders of Company
Common Stock and 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 made therein, in light of the
circumstances under which they were made, not misleading.

     4.7 Financing. Siemens has available sufficient cash in immediately
available funds to make the payments required by Section 2 of this Agreement.

5. COVENANTS AND ADDITIONAL AGREEMENTS.

     5.1 Conduct of Business. The Company covenants and agrees that at all times
from and after the date of this Agreement until the Measurement Date (except as
expressly contemplated or permitted by this Agreement, or to the extent that
Siemens otherwise shall consent in writing):



                                       23
<PAGE>   30
          (a) The Company and the Subsidiaries shall conduct their respective
businesses only in, and shall not take any action except in, the ordinary course
of business consistent with past practice.

          (b) Without limiting the generality of paragraph (a) of this Section
5.1, (i) the Company and its Subsidiaries shall use all commercially reasonable
efforts to preserve intact in all material respects their present business
organizations and reputation, to keep available the services of their key
officers and employees, to maintain their assets and properties in good working
order and condition, ordinary wear and tear excepted, to maintain insurance on
their tangible assets and businesses in such amounts and against such risks and
losses as are currently in effect, to preserve their relationship with customers
and suppliers and others having significant business dealings with them and to
comply in all material respects with all Laws and orders of all governmental or
regulatory authorities applicable to any of them, and (ii) neither the Company
nor any of its Subsidiaries shall:

                    (A) amend or propose to amend its Certificate of
Incorporation or By-Laws except for amendments required by this Agreement or
which do not and will not adversely affect Siemens or Acquisition;

                    (B) (w) declare, set aside or pay any dividends on or make
other distributions in respect of any of its capital stock, (x) split, combine,
reclassify or take similar action with respect to any of its capital stock or
issue or authorize or propose the issuance of any other securities in respect
of, in lieu of or in substitution for shares of its capital stock, (y) adopt a
plan of complete or partial liquidation or resolutions providing for or
authorizing such liquidation or a merger, consolidation, restructuring,
recapitalization or other reorganization or (z) directly or indirectly redeem,
repurchase or otherwise acquire any shares of its capital stock or any option
with respect thereto (except for repurchases pursuant to outstanding stock
restriction agreements);

                    (C) issue, deliver or sell, or authorize or propose the
issuance, delivery or sale of, any shares of its capital stock or any option,
warrant or similar right with respect thereto other than upon exercise of an
Option or Warrant outstanding on the date of this Agreement;

                    (D) 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 assets other than the acquisition of assets in
the ordinary course of business consistent with past practice;

                    (E) other than dispositions in the ordinary course of its
business consistent with past practice, sell, lease, grant any security interest
in or otherwise dispose of or encumber any of its assets or properties;

                    (F) except to the extent required by applicable law, (x)
permit any material change in (A) any pricing, marketing, purchasing,
investment, accounting, financial reporting, inventory, credit, allowance or tax
practice or policy or (B) any method of calculating any bad debt, contingency or
other reserve for accounting, financial reporting or tax purposes or (y) make
any material tax election or settle or compromise any material income tax
liability with any governmental or regulatory authority;

                    (G) except as otherwise provided in this Agreement, (x)
except to the extent such incurrence would not be in violation of or require
disclosure pursuant to the terms of this Agreement, incur (which shall not be
deemed to include entering into credit agreements, lines of credit or similar
arrangements until borrowings are made under such arrangements) any indebtedness
for borrowed


                                       24
<PAGE>   31
money or guarantee any such indebtedness or (y) voluntarily purchase, cancel,
prepay or otherwise provide for a complete or partial discharge in advance of a
scheduled repayment date with respect to, or waive any right under, any
indebtedness for borrowed money;

                    (H) except for the actions with respect to stock options,
restricted stock awards and the Company Stock Plans expressly provided for in
this Agreement, enter into, adopt, amend in any material respect (except as may
be required by applicable law) or terminate (other than in accordance with its
terms) any Benefit Plans or other agreement, arrangement, plan or policy between
the Company and one or more of its directors, officers, employees or
consultants, or increase in any manner the compensation or fringe benefits of
any director, officer, employee or consultant or pay any benefit not required by
any plan or arrangement in effect as of the date hereof;

                    (I) except for the amendments to the Options, the Company
Stock Plans, the Warrants and the Warrant Agreements expressly provided for in
this Agreement, enter into any contract or amend or modify any existing
contract, or engage in any new transaction outside the ordinary course of
business consistent with past practice or not on an arm's length basis, with any
affiliate of the Company;

                    (J) except as set forth in Section 5.1 of the Disclosure
Schedule, make any capital expenditures or commitments for additions to plant,
property or equipment constituting capital assets in excess of $50,000 with
respect to each such capital expenditure or commitment and not more than
$1,000,000 in the aggregate;

                    (K) waive or agree to any extension of any limitations
period in respect of Taxes;

                    (L) make any change in the lines of business in which it
participates or is engaged;

                    (M) take any action or omit to take any action which would
result in a material breach, violation or inaccuracy of any representation,
warranty, covenant or agreement of the Company made in this Agreement;

                    (N) enter into any material contract or agreement which
would require the consent of the other party thereto to consummate the
transactions contemplated hereby; or

                    (O) enter into any contract, agreement, commitment or
arrangement to do or engage in any of the foregoing.

          (c) Until the Measurement Date, the Company shall confer on a regular
and frequent basis with Siemens and/or its Affiliates with respect to its
business and operations and other matters relevant to the Merger, and shall
promptly advise Siemens, orally and in writing, of any change or event,
including, without limitation, any complaint, investigation or hearing by any
governmental or regulatory authority (or communication indicating the same may
be contemplated) or the institution or threat of litigation, having, or which,
insofar as can be reasonably foreseen, could have, a Material Adverse Effect or
materially and adversely affect the ability of the Company to consummate the
transactions contemplated hereby.

     5.2 No Solicitations. Until the Measurement Date, neither the Company nor
any of its Subsidiaries shall authorize or permit any officer, director,
employee, investment banker, financial advisor, attorney, accountant or other
agent or representative (each, a "Representative") retained by or


                                       25
<PAGE>   32
acting for or on behalf of the Company or any of its Subsidiaries to, directly
or indirectly, initiate, solicit, encourage, or, unless the Board of Directors
of the Company believes, after consultation with outside legal counsel, that the
failure to take such actions would constitute a breach of the fiduciary duties
of the Board of Directors, participate in any negotiations regarding, furnish
any confidential information in connection with, endorse or otherwise cooperate
with, assist, participate in or facilitate the making of any proposal or offer
for, or which may reasonably be expected to lead to, an Acquisition Transaction,
by any Person, or group (a "Potential Acquiror"); provided, however, that (i)
the Company may furnish or cause to be furnished information concerning the
Company and its businesses, properties or assets to a Potential Acquiror, (ii)
the Company may engage in discussions or negotiations with a Potential Acquiror,
(iii) following receipt of a proposal or offer for an Acquisition Transaction,
the Company may make disclosure to the Company's stockholders and may recommend
such proposal or offer to the Company's stockholders and (iv) following receipt
of a proposal or offer for an Acquisition Transaction, the Board of Directors
may enter into an agreement in principle or a definitive agreement with respect
to such Acquisition Transaction, but in each case referred to in the foregoing
clauses (i) through (iv) only to the extent that the Board of Directors of the
Company shall have first concluded in good faith after consultation with outside
legal counsel that such action is necessary or appropriate because failure to
take such action would constitute a breach of the fiduciary duties owed by the
Board of Directors of the Company to the Company's stockholders under applicable
law; and provided, further, that the Board of Directors of the Company shall not
take or permit the Company to take any of the foregoing actions referred to in
clauses (i) through (iv) without prior written notice to Siemens with respect to
such action. The Company shall promptly inform Siemens, orally and in writing,
of the material terms and conditions of any proposal or offer for, or which may
reasonably be expected to lead to, an Acquisition Transaction that it receives
and the identity of the Potential Acquiror. The Company will immediately cease
and cause to be terminated any existing activities, discussions or negotiations
with any parties conducted on or prior to the date of this Agreement heretofore
with respect to any Acquisition Transaction. As used in this Agreement,
"Acquisition Transaction" means any merger, consolidation or other business
combination involving the Company, or any acquisition in any manner of all or a
substantial portion of the equity of, or all or a substantial portion of the
assets of, the Company, whether for cash, securities or any other consideration
or combination thereof, other than pursuant to the transactions contemplated by
this Agreement.

     5.3 Access to Information; Confidentiality. (a) The Company shall,
throughout the period from the date hereof to the Measurement Date, (i) provide
Siemens and its Affiliates and their respective Representatives with full
access, upon reasonable prior notice, during normal business hours to all
officers, employees, agents, accountants and customers of the Company and its
Subsidiaries, and their respective assets, properties, books and records and
(ii) furnish promptly to such persons (x) a copy of each report, statement,
schedule and other document filed or received by the Company or any Subsidiary
pursuant to the requirements of federal or state securities laws or filed with
any other governmental or regulatory authority, and (y) all other information
and data (including, without limitation, copies of contracts, Benefit Plans and
other books and records) concerning the business, employees and operations of
the Company (including product development) and its Subsidiaries as Siemens or
any of such other persons reasonably may request. No investigation pursuant to
this paragraph or otherwise shall affect any representation or warranty
contained in this Agreement or any condition to the obligations of the parties
hereto.

          (b) Until the Measurement Date, Siemens will hold, and will use its
best efforts to cause its Affiliates and their respective Representatives to
hold, in strict confidence, unless (i) compelled to disclose by judicial or
administrative process or by other requirements of applicable laws of
governmental or regulatory authorities (including, without limitation, in
connection with obtaining the necessary approvals of this Agreement or the
transactions contemplated hereby of governmental or regulatory authorities);
provided that to the extent reasonably practicable Siemens shall provide the



                                       26
<PAGE>   33
Company with reasonable notice of such compelled disclosure, or (ii) disclosed
in an action or proceeding brought by a party hereto in pursuit of its rights or
in the exercise of its remedies hereunder, all documents and information
concerning the Company and its Subsidiaries furnished to it by the Company or
its Representatives in connection with this Agreement or the transactions
contemplated hereby, except to the extent that such documents or information can
be shown to have been (w) known by Siemens, any of its Affiliates or any of
their respective Representatives prior to disclosure by the Company or its
Representatives, (x) in the public domain (either prior to or after the
furnishing of such documents or information hereunder) through no fault of
Siemens and its Representatives, (y) later acquired by Siemens, any of its
Affiliates or any of their respective Representatives from another source if
Siemens, such Affiliate or such Representative is not aware that such source is
under an obligation to the Company to keep such documents and information
confidential or (z) independently developed by Siemens or any of its Affiliates.
In the event that this Agreement is terminated without the transactions
contemplated hereby having been consummated, upon the request of the Company,
Siemens will, and will cause its Representatives to, promptly redeliver or cause
to be redelivered all copies of documents and information furnished by the
Company or its Representatives to Siemens, its Affiliates and their
Representatives in connection with this Agreement or the transactions
contemplated hereby and destroy or cause to be destroyed all notes, memoranda,
summaries, analyses, compilations and other writings related thereto or based
thereon prepared by Siemens or its Representatives.

     5.4 Preparation of Information Statement; Approval of Stockholders; Siemens
Approval. (a) As soon as practicable following the date of this Agreement, the
Company shall (i) prepare and file with the SEC a preliminary Information
Statement, in form and substance satisfactory to Siemens and (ii) prepare,
furnish to its stockholders and file with the SEC the 14(f) Material. The
Company shall use its best efforts to respond to and resolve any comments of the
staff of the SEC with respect to the Information Statement or the 14(f) Material
as promptly as practicable after such filing. The Company will notify Siemens
promptly of the receipt of any comments from the SEC and of any request by the
SEC for amendments or supplements to the Information Statement or the 14(f)
Material or for additional information, will supply Siemens with copies of all
correspondence between it or any of its Representatives and the SEC with respect
to the Information Statement or the 14(f) Material and will provide Siemens and
its representatives with a reasonable opportunity to review, comment on and
discuss all documents filed with the SEC or furnished to the Company's
stockholders pursuant to this Section 5.4, to participate in all conversations
with the SEC relating to those filings or any of the subject matter of this
Agreement and to comment on all proposed responses to or other communications
with the SEC. The form and content of the Information Statement and the 14(f)
Material shall be reasonably acceptable to Siemens. The Information Statement
and the 14(f) Material shall comply in all material respects with all applicable
requirements under all applicable laws. Whenever any event occurs which is
required to be set forth in an amendment or supplement to the Information
Statement or the 14(f) Material, the Company or Siemens, as the case may be,
shall promptly inform the other of such occurrence and cooperate in filing with
the SEC and/or mailing to the stockholders of the Company such amendment or
supplement in a form reasonably acceptable to Siemens.

          (b) The Company shall, if required by applicable law and if requested
by Siemens, duly call, give notice of, convene and hold a meeting of or solicit
proxies or written consents from its stockholders for the purpose of voting on
(i) the adoption of this Agreement and (ii) the taking of such additional
corporate actions as Siemens reasonably may request or as may be necessary or
appropriate for the consummation of the Merger and the other transactions
contemplated by this Agreement, whether or not the Board of Directors of the
Company modifies or withdraws its approval of this Agreement, its declaration of
its advisability or its recommendation that the stockholders adopt it. The
Company shall take these actions and distribute the Information Statement as
soon as reasonably practicable after the date hereof.



                                       27
<PAGE>   34
          (c) Notwithstanding the foregoing, if Acquisition acquires at least
90% of the issued and outstanding shares of Company Common Stock, the parties
hereto shall take all necessary and appropriate actions to cause the Merger to
become effective in accordance with Section 253 of the DGCL, as soon as
reasonably practicable, without a meeting of the stockholders of the Company and
without action by written consent of stockholders of the Company.

     5.5 Regulatory and Other Approvals. Subject to the terms and conditions of
this Agreement, each of the Company and Siemens will proceed diligently and in
good faith and will use all commercially reasonable efforts to do, or cause to
be done, all things necessary, proper or advisable to, as promptly as
practicable, (i) obtain all consents, approvals or actions of, make all filings
with and give all notices to governmental or regulatory authorities or any other
public or private third parties required of Siemens or any of its Subsidiaries
or the Company to consummate the Initial Purchase and the Merger and the other
matters contemplated hereby, and (ii) provide such other information and
communications to such governmental or regulatory authorities as the other party
or such governmental or regulatory authorities may reasonably request. In
addition to and not in limitation of the foregoing, each of the parties will (x)
take promptly all actions necessary to make the filings required of Siemens and
the Company or their Affiliates under the HSR Act and under any similar or
comparable European antitrust statute or regulation (collectively, the "European
Statutes"), (y) comply at the earliest practicable date with any request for
additional information received by such party or its Affiliates from the Federal
Trade Commission (the "FTC") or the Antitrust Division of the Department of
Justice (the "Antitrust Division") pursuant to the HSR Act or from similar or
comparable European governmental authorities (the "European Authorities")
pursuant to the European Statutes, and (z) cooperate with the other party in
connection with such party's filings under the HSR Act and the European Statutes
and in connection with resolving any investigation or other inquiry concerning
the Merger or the other matters contemplated by this Agreement commenced by the
FTC, the Antitrust Division, state attorneys general or the European
Authorities.

     5.6 Notice and Cure. Each of Siemens and the Company will notify the other
promptly in writing of, and contemporaneously will provide the other with true
and complete copies of any and all information or documents relating to, and
will use commercially reasonable efforts to cure before the Measurement Date,
any event, transaction or circumstance occurring after the date of this
Agreement that causes or will cause any covenant or agreement of Siemens or the
Company, as the case may be, under this Agreement to be breached or that renders
or will render untrue any representation or warranty of Siemens or the Company,
as the case may be, contained in this Agreement as if the same were made on or
as of the date of such event, transaction or circumstance. Each of Siemens and
the Company also will notify the other promptly in writing of, and will use
commercially reasonable efforts to cure, before the Measurement Date, any
violation or breach of any representation, warranty, covenant or agreement made
by Siemens or the Company, as the case may be, in this Agreement, whether
occurring or arising prior to, on or after the date of this Agreement. No notice
given pursuant to this Section 5.6 shall have any effect on (i) the
representations, warranties, covenants or agreements contained in this Agreement
for purposes of determining satisfaction of any condition contained herein or
(ii) any right to indemnity hereunder.

     5.7 Company Stock Plans; Warrants. The Company shall take or cause to be
taken, including as appropriate by its Board of Directors or the appropriate
committee thereof, by all steps necessary, if any, to cause (i) give effect to
the provisions of Section 2.1(e) and (ii) pursuant to the Warrant Agreements or
other granting instruments, each Warrant granted to be exercisable solely for
cash in an amount not to exceed the Merger Price.

     5.8 Termination of Contracts. Prior to the Measurement Date, the Company
will take all action and obtain all consents required to terminate the
agreements listed on Schedule 5.8 without liability to the Company following the
Effective Time.



                                       28
<PAGE>   35
     5.9 Fulfillment of Conditions. Subject to the terms and conditions of this
Agreement, each of Siemens and the Company will take or cause to be taken all
commercially reasonable steps necessary or desirable and proceed diligently and
in good faith to satisfy each condition to the other's obligations contained in
this Agreement and to consummate and make effective the transactions
contemplated by this Agreement, and neither the Company nor Siemens will, nor
will it permit any of its Subsidiaries to, take or fail to take any action that
could be reasonably expected to result in the nonfulfillment of any such
condition.

     5.10 Cooperation. (a) The Company hereby acknowledges and agrees that, in
the event Siemens or any of its Affiliates undertakes to redeem, repurchase or
repay all or any portion of the outstanding Notes, Debentures and/or Promissory
Note, the Company will provide full and complete access to all books, records,
files and information relating to such Notes, Debentures and Promissory Note,
including through providing access to the applicable trustee, if any, and will
assist in any manner as may reasonably be requested by Siemens and its
Affiliates and their respective Representatives with respect to any such
redemption, repurchase or repayment.

          (b) Siemens hereby acknowledges and agrees that the Company may, with
the consent of Siemens (which consent shall not unreasonably be withheld),
redeem, repurchase or repay all or any portion of the outstanding Notes,
Debentures and/or Promissory Notes prior to the Measurement Date; provided,
however, that Siemens shall be reasonably satisfied that such purchases shall
not result in any liability to the Surviving Corporation or to Siemens or any of
its Affiliates.

     5.11 Director and Officer Indemnification.

          (a) Siemens agrees that all rights to indemnification now existing in
favor of any current or former director or officer of the Company as provided in
the Company's Certificate of Incorporation or by-laws or in a written agreement
between any such person and the Company in effect on the date hereof shall
survive the Merger and shall continue in full force and effect until the
expiration of all applicable statutes of limitation. Siemens also agrees to
indemnify all current and former directors and officers of the Company to the
fullest extent the Company would be permitted by the DGCL to indemnify them with
respect to all acts and omissions arising out of such individuals' service as
officers or directors of the Company or any of the Subsidiaries or as trustees
or fiduciaries of any plan for the benefit of employees occurring prior to the
Effective Time. Without limitation of the foregoing, in the event any such
person is or becomes involved in any capacity in any action, proceeding or
investigation in connection with any matter, including, without limitation, the
transactions contemplated by this Agreement, occurring prior to, and including,
the Effective Time, Siemens will pay such person's reasonable legal and other
expenses of counsel selected by such person and reasonably acceptable to Siemens
(including the cost of any investigation, preparation and settlement) incurred
in connection therewith after statements therefor are received by Siemens;
provided, however, that Siemens shall not, in connection with any one such
action or proceeding or separate but substantially similar actions or
proceedings arising out of the same general allegations, be liable for
reasonable fees and expenses of more than one separate firm of attorneys (in
addition to any local counsel) at any time for all indemnified persons. Siemens
shall be entitled to participate in the defense of any such action or
proceeding, and counsel selected by the indemnified person shall, to the extent
consistent with their professional responsibilities, cooperate with Siemens and
any counsel designated by Siemens. Siemens shall pay all reasonable expenses,
including attorneys' fees, that may be incurred by any indemnified person in
enforcing the indemnity and other obligations provided for in this Section 5.11.

          (b) Siemens agrees that the Company and, from and after the Effective
Time, the Surviving Corporation shall cause to be maintained in effect for not
less than six years from the Effective Time the current policies of directors'
and officers' liability insurance maintained by the Company;


                                       29
<PAGE>   36
provided that the Surviving Corporation may substitute therefor policies of at
least the same coverage containing terms and conditions which are no less
advantageous to such persons; and provided, further, that such substitution
shall not result in any gaps or lapses in coverage with respect to matters
occurring prior to the Effective Time; and provided, further, that the Surviving
Corporation shall not be required to pay an annual premium in excess of 200% of
the last annual premium paid by the Company prior to the date hereof; and if the
Surviving Corporation is unable to obtain the insurance required by this Section
5.11(b), it shall obtain as much comparable insurance as possible for an annual
premium equal to such maximum amount.

     5.12 Additional Covenants.

          (a) On or prior to the Measurement Date, the Company, Siemens and Dort
A. Cameron, III shall execute a letter, substantially in the form of Exhibit L,
terminating Mr. Cameron's employment with the Company under his employment
agreement.

          (b) Subject to the other terms and provisions of this Agreement, on or
promptly following the Measurement Date, Siemens will provide funds necessary to
repay and cause to be repaid to IBM Credit Corporation all amounts owing under
that certain Fourth Amended and Restated Agreement for Wholesale Financing,
dated September 15, 1995, as amended and cause such facility to be terminated.

          (c) Subject to the other terms and provisions of this Agreement, on or
promptly following the Measurement Date, Siemens will provide funds necessary to
repay and cause to be repaid the Notes.

6. CONDITIONS TO CLOSING.

     6.1 Conditions to the Obligations of Siemens and Acquisition. The
obligation of Siemens and Acquisition to effect the Initial Purchase or, if the
Initial Purchase does not occur, the Merger, is subject to the fulfillment on or
prior to the Measurement Date of each of the following conditions (all or any of
which, other than Sections 6.1(e) and (g), may be waived by Siemens in its sole
discretion):

          (a) Performance of Obligations; Representations and Warranties. The
Company shall have performed and complied in all material respects with all
covenants and agreements contained in this Agreement that are required to be
performed or complied with by it prior to or at the Measurement Date, and, each
of the Company's representations and warranties contained in Section 3 of this
Agreement shall be true and correct in all material respects (if not qualified
by materiality) and in all respects (if qualified by materiality) as of the
Measurement Date as though made on and as of the Measurement Date or in the case
of representations and warranties made as of a specified date earlier than the
Measurement Date, shall have been true and correct in all material respects (if
not qualified by materiality) and in all respects (if qualified by materiality)
on and as of such date and the Company shall have delivered to Siemens a
certificate, dated the Measurement Date executed on behalf of the Company by its
Chairman, President or a Vice President, to such effect.

          (b) Opinions of Counsel. Siemens and Acquisition shall have received
the favorable written opinions, each dated the Measurement Date, of Lynne A.
Burgess, Senior Vice President and General Counsel of the Company, and Cahill
Gordon & Reindel, counsel to the Company, as to the matters set forth on Exhibit
E and in form reasonably satisfactory to Siemens and Acquisition.

          (c) Resignations. Siemens shall have received the written resignation
(i) of employment and from all offices listed of the individuals set forth on
Exhibit F-1 and (ii) from all offices listed of the


                                       30
<PAGE>   37
individuals set forth on Exhibit F-2 and the written resignation of all trustees
of all the Benefit Plans of the Company and its Subsidiaries, each effective at
the Measurement Date.

          (d) Consents. The Company shall have received or made the consents,
approvals, authorizations, permissions, notices and filings listed on Schedule
6.1(d) and all of them shall be in form and substance satisfactory to Siemens
and Acquisition.

          (e) Stockholder Approval. This Agreement shall have been adopted by
the requisite vote of the stockholders of the Company (if any) required by the
Company's Certificate of Incorporation and the DGCL; provided, however, that
this condition shall not apply in respect of the Initial Purchase.

          (f) Escrow Agreement. The Escrow Agreement and, if the Tax Insurance
Election has been made, the Tax Escrow Agreement, shall have been duly executed
and delivered by the parties thereto.

          (g) Antitrust Waiting Periods. Any waiting period (and any extension
thereof) applicable to the consummation of the Merger under the HSR Act shall
have expired or been terminated.

          (h) Invoices. The Company shall have delivered to Siemens the Invoices
(as defined in Section 9.1).

          (i) IRS Matter Resolution. The tax matter described on Schedule 6.1(i)
shall have been resolved in a manner satisfactory to Siemens in its sole
discretion in a manner that will result in no liability on the part of the
Company, any Subsidiary or the Surviving Corporation to federal or state Tax
authorities or, in the alternative if so elected by the Company (the "Tax
Insurance Election"), the Company shall have procured, paid in full (subject to
Section 9.1) and delivered to Siemens, insurance policies in substantially the
forms contained in Exhibit G, with only such changes as shall be reasonably
acceptable to Siemens and in the amounts set forth in Exhibit G.

          (j) Dissenting Shares. The applicable 20-day period in Section 262(d)
of the DGCL for stockholders to demand or perfect dissenters rights pursuant to
Section 262 of the DGCL shall have expired and such rights shall not have been
exercised with respect to more than 5% of the outstanding shares of any class of
capital stock of the Company.

     6.2 Conditions to the Obligations of the Company. The obligation of the
Company to effect the Merger is subject to the fulfillment at or prior to the
Measurement Date of each of the following conditions (all of which may be waived
by the Company in its sole discretion).

          (a) Performance of Obligations; Representations and Warranties.
Siemens and Acquisition shall have performed and complied in all material
respects with all covenants and agreements contained in this Agreement that are
required to be performed or complied with by them prior to or at the Measurement
Date and each of the representations and warranties of Acquisition and Siemens
contained in Section 4 of this Agreement shall be true and correct, in all
material respects (if not qualified by materiality) and in all respects (if
qualified by materiality) as of the Measurement Date as though made on and as of
the Measurement Date or, in the case of representations and warranties made as
of a specified date earlier than the Measurement Date, shall have been true and
correct in all material respects (if not qualified by materiality) and in all
respects (if qualified by materiality) on and as of such date and each of
Siemens and Acquisition shall have delivered to the Company a certificate dated
the Measurement Date executed on behalf of each of them by an authorized
signatory to such effect.



                                       31
<PAGE>   38
          (b) Opinion of Counsel. The Company shall have received the favorable
written opinion dated the Measurement Date of internal counsel to Siemens and
Acquisition, as to the matters set forth in Exhibit H and in form reasonably
satisfactory to the Company.

          (c) Escrow Agreement. The Escrow Agreement and, if the Tax Insurance
Election has been made, the Tax Escrow Agreement, shall have been duly executed
and delivered by the parties thereto.

          (d) Stockholder Approval. This Agreement shall have been adopted by
the requisite vote of the stockholders of the Company (if any) required by the
Company's Certificate of Incorporation and the DGCL.

          (e) Antitrust Waiting Periods. Any waiting period (and any extension
thereof) applicable to the consummation of the Merger under the HSR Act shall
have expired or been terminated.

7. SURVIVAL; INDEMNIFICATION; TAX MATTERS.

     7.1 Survival. Except as otherwise provided herein, all the representations,
warranties covenants and agreements of the Company contained in or made pursuant
to this Agreement shall survive the Closing and shall remain operative and in
full force and effect for a period of 18 months after the Measurement Date (such
period being referred to as the "Escrow Indemnity Period"), regardless of any
investigation or statement as to the results thereof made by or on behalf of any
Person before or after the Closing. No claim for indemnification may be asserted
after the expiration of the Escrow Indemnity Period. Notwithstanding anything
herein to the contrary, any representation, warranty, covenant and agreement
which is the subject of a claim which is asserted in writing prior to the
expiration of the Escrow Indemnity Period shall survive with respect to such
claim or any dispute with respect thereto until the final resolution thereof.

     7.2 Indemnification. Siemens, its employees, agents, directors, officers,
subsidiaries and its affiliates and the employees, agents, directors, officers
and subsidiaries of its affiliates (the "Indemnified Parties") shall be
indemnified and held harmless from and against any and all damages, claims,
losses (including loss of value), expenses, costs, obligations and liabilities,
including without limitation liabilities for all reasonable attorneys',
accountants', and experts' fees and expenses including those incurred to enforce
the terms of this Agreement or any Collateral Document (collectively, "Losses")
(provided, however, that to avoid double-counting, Losses shall be determined
after giving effect to any reserves or liabilities reflected on the final
Closing Statement, if and to the extent those reserves reduced the Closing
Liquid Net Worth), asserted against, or paid, suffered or incurred by any
Indemnified Party which, directly or indirectly, arise out of, result from, are
based upon or relate to: (i) the inaccuracy, untruth or incompleteness, as of
the date of this Agreement or the Measurement Date (or, in the case of
representations and warranties made as of a specified date earlier than the
Measurement Date, on and as of such earlier date), of any representation or
warranty made or deemed to have been made by the Company in this Agreement or
any failure by the Company to perform or fulfill any of its covenants or
agreements set forth in this Agreement; provided, however that if any such
representation or warranty (other than those representations and warranties
contained in Section 3.7, Section 3.9(a) and Section 3.24) is qualified in any
respect by materiality or Material Adverse Effect, for purposes of this
paragraph such materiality or Material Adverse Effect qualification will be in
all respects ignored; (ii) subject to Section 7.9(b), Pre-Measurement Date Tax
Liabilities; (iii) the Asset Purchase Agreement, dated as of May 10, 1999, by
and between CompuCom Systems, Inc. and the Company or any of the transactions
contemplated thereby; (iv) any action, suit or proceeding commenced prior to the
Measurement Date before any court or arbitral or other tribunal; (v) the Tax
Matters Settlement Shortfall Amount; or (vi) any failure of the Company or any
of its Subsidiaries to be Year 2000 Compliant.



                                       32
<PAGE>   39
     7.3 Limitation of Liability; Disposition of Escrow Fund. After the Closing,
the Indemnified Parties' rights to indemnification under Section 7.2 shall be
subject to the following limitations: (i) in no event shall the aggregate amount
to be paid to the Indemnified Parties under Section 7.2 exceed the Indemnity
Amount; (ii) the Indemnified Parties shall be entitled to recover any Loss
otherwise recoverable pursuant to clauses (i), (iii), (iv) and (vi) of Section
7.2 only to the extent the aggregate of Losses otherwise recoverable pursuant
such Section exceeds $1,000,000 in the aggregate; provided, that if all such
Losses exceed $1,000,000, the Indemnified Parties shall be entitled to recover
for all such Losses; and (iii) if the inaccuracy, untruth or incompleteness of a
representation in Section 3.17 results in an increase in the taxable income of
the Company or any Subsidiary with respect to any taxable period ending after
the Measurement Date, such increase in taxable income shall not give rise to an
indemnifiable Loss to the extent such increase in taxable income is properly
offset by available net operating loss carryovers of the Company or any
Subsidiary (as the case may be) from taxable periods beginning prior to the
Measurement Date.

     7.4 Stockholders' Representative. (a) The Company hereby appoints, and the
Company's stockholders shall be deemed to appoint, the Stockholders'
Representative, with full and unqualified power to delegate to one or more
Persons the authority granted to him hereunder, to act as each of their agent
and attorney-in-fact, with full power of substitution, to take all actions
called for by this Section 7 and the Escrow Agreement and, if applicable, the
Tax Escrow Agreement, on their individual and collective behalf, in accordance
with the terms of this Section 7 and the Escrow Agreement and, if applicable,
the Tax Escrow Agreement.

          (b) The Stockholders' Representative shall have no liability
whatsoever to any existing or former stockholder of the Company or to any other
Person arising out of the matters contemplated by this Section 7 or the Escrow
Agreement or, if applicable, the Tax Escrow Agreement, except only to the extent
of any Loss caused exclusively by the Stockholders' Representative's willful
misconduct or bad faith. In any event, any such liability shall be limited to
direct damages resulting from such conduct and in no event shall the
Stockholders' Representative be liable for special, incidental or consequential
damages incurred or suffered by any Person. The Stockholders' Representative
shall incur no liability to any existing or former stockholder of the Company or
to any other Person with respect to any action taken or suffered by him in
reliance upon any note, direction, instruction, consent, statement or other
documents believed by him to be genuine and duly authorized. The Stockholders'
Representative may, in all questions arising under the Escrow Agreement and, if
applicable, the Tax Escrow Agreement, rely on the advice of counsel and for
anything done, omitted or suffered in good faith by the Stockholders'
Representative based on such advice, the Stockholders' Representative shall not
be liable to any existing or former stockholder of the Company or to any other
Person.

          (c) In the event of the death or permanent disability of the
Stockholders' Representative, or his resignation, a successor Stockholders'
Representative shall be appointed by a majority vote of the holders (other than
Siemens and its subsidiaries) of outstanding capital stock of the Company
immediately prior to the Effective Time, with each such stockholder (or his or
her successors or assigns) to be given a vote equal to the number of votes
represented by the shares of capital stock of the Company held by such
stockholder immediately prior to the Effective Time.

     7.5 Notice of Claims. If any of the Indemnified Parties believes that it
has suffered or incurred any Loss, it shall notify the Escrow Agent and the
Stockholders' Representative promptly in writing (at their respective addresses
set forth in the Escrow Agreement), and in any event within the applicable time
period specified in Section 7.1, describing such Loss, all with reasonable
particularity and containing a reference to the provisions of this Agreement in
respect of which such Loss shall have occurred (a "Claim Notice"). If any legal
action is instituted by a third party with respect to which any of the
Indemnified Parties intend to claim indemnity under this Section, such
Indemnified Party shall promptly give a Claim


                                       33
<PAGE>   40
Notice to notify the Escrow Agent and the Stockholders' Representative with
respect to such legal action. In any event, a failure or delay in notifying the
Escrow Agent and the Stockholders' Representative shall not affect the
Indemnified Party's right to indemnity, except only to the extent such failure
or delay materially and adversely prejudices the ability to defend against any
legal action.

     7.6 Defense of Third Party Claims. Because the right to indemnity is
limited as provided herein, except as otherwise provided in the Tax Escrow
Agreement relating solely to the Tax Matters (as defined in the Tax Matters
Escrow Agreement), the Indemnified Parties shall have the right to conduct and
control, through counsel of their own choosing, reasonably acceptable to the
Stockholders' Representative, any third party legal action or other claim, but
the Stockholders' Representative may, at its election, participate in the
defense thereof at its sole cost and expense; provided, however, that if the
Indemnified Parties shall fail to defend any such legal action or other claim,
then the Stockholders' Representative may defend, through counsel of its own
choosing, such legal action or other claim, and so long as it gives Siemens at
least 15 days' notice of the terms of the proposed settlement thereof and
permits Siemens to then undertake the defense thereof, except as set forth
below, settle such legal action or other claim and recover out of the Indemnity
Amount the amount of such settlement or of any judgment and the costs and
expenses of such defense. Neither Siemens nor the Stockholders' Representative
shall compromise or settle any such legal action or other claim without the
prior written consent of the other, which consent shall not be unreasonably
withheld, except that under no circumstances shall Siemens be required to
consent to the entry of an order for injunctive or other non-monetary relief.
All costs and expenses reasonably incurred in defending any such third party
legal action or other claim, including the amount of any settlement or of any
judgment, shall be paid out of the Indemnity Amount.

     7.7 Dispute Resolution: Negotiation, Mediation and Arbitration

          (a) The Parties shall attempt to resolve any dispute arising out of or
relating to this Agreement promptly by negotiation in good faith between
executives who have authority to settle the dispute. Any Party shall give any
other Party written notice of any dispute not resolved in the ordinary course of
business. Within 7 days after delivery of such notice, the Party receiving
notice shall submit to the other a written response thereto. The notice and the
response shall include: (i) a statement of each Party's position(s) regarding
the matters(s) in dispute and a summary of arguments in support thereof, and
(ii) the name and title of the executive who will represent that Party and any
other Person who will accompany that executive.

          (b) Within 14 days after delivery of the notice, the designated
executives shall meet at a mutually acceptable time and place, and thereafter,
as often as they reasonably deem necessary, to attempt to resolve the dispute.
All reasonable requests for information made by one Party to any other shall be
honored in a timely fashion. All negotiations conducted pursuant to this Section
7.7 (and any of the Parties' submissions in contemplation hereof) shall be kept
confidential by the Parties and shall be treated by the Parties and their
representatives as compromise and settlement negotiations under the Federal
Rules of Evidence and any similar state rules.

          (c) If the matter in dispute has not been resolved within 30 days
after delivery of the notice, the dispute shall be submitted to non-binding
mediation in accordance with the then-current Model Procedure for Mediation of
Business Disputes of the CPR Institute for Dispute Resolution. The mediation
shall be conducted within 30 days of the time the mediator is selected. Unless
otherwise agreed, the parties will select a mediator from the CPR Panels of
Distinguished Neutrals; provided, however, that if no mediator from that list
can be mutually agreed upon, each Party will submit to the CPR its own list of
acceptable mediators from the CPR Panels of Distinguished Neutrals and the CPR



                                       34
<PAGE>   41
shall appoint one of those listed as the mediator for the Parties. The costs of
the mediation, including the mediator's fees, shall be borne equally by the
Parties to the dispute.

          (d) If the matter in dispute has not been resolved within 30 days
after the selection of the mediator, either Party (the "claimant") may submit
the dispute to binding arbitration to the New York, New York office of the
American Arbitration Association ("AAA") in accordance with the procedures set
forth in the Commercial Arbitration Rules of the AAA, revised and effective July
1, 1996.

          (e) The Commercial Arbitration Rules of the AAA, revised and effective
July 1, 1996, as modified or revised by the provisions of this Section 7.7,
shall govern any arbitration proceeding hereunder. The arbitration shall be
conducted by three arbitrators selected pursuant to Rule 13 of the Commercial
Arbitration Rules, and prehearing discovery shall be permitted if and only to
the extent determined by the arbitrator to be necessary in order to effectuate
resolution of the matter in dispute. The arbitrator's decision shall be rendered
within 30 days of the conclusion of any hearing hereunder and the arbitrator's
judgment and award may be entered and enforced in any court of competent
jurisdiction.

          (f) Resolution of disputes under the procedures of this Section 7.7
shall be the sole and exclusive means of resolving disputes arising out of or
relating to this Agreement; provided, however, that nothing herein shall
preclude the Parties from seeking in any court of competent jurisdiction
temporary or interim injunctive relief to the extent necessary to preserve the
subject matter of the dispute pending resolution under this Section 7.7.

     7.8 Exclusive Remedy. The indemnification provided in this Section 7 shall
be the sole and exclusive remedy available following the Closing to the
Indemnified Parties for the subject matter covered by such indemnification and
any claim arising under this Agreement.

     7.9 Tax Matters. (a)(i) Prior to the filing of any Income Tax Return solely
with respect to the Company and/or any of its Subsidiaries due after the
Measurement Date (with regard to extensions) with respect to any taxable year or
other taxable period beginning prior to the Measurement Date, and no later than
thirty (30) days prior to the due date for filing such Tax Return, Siemens shall
provide the Stockholders' Representative with a draft of such Tax Return, and
any related work papers, for review. No later than ten (10) days prior to the
due date for filing such Tax Return, the Stockholders' Representative shall
notify Siemens with any proposed modifications to such Tax Return. Such
modifications to the Tax Return shall be made by Siemens in its reasonable
discretion prior to filing as long as there is a reasonable basis for the filing
position requested. In any event, Siemens shall file all Tax Returns due after
the Measurement Date with respect to taxable years beginning prior to the
Measurement Date consistent with the Company's past practices to the extent
permitted by applicable law. Notwithstanding the foregoing, nothing contained in
this Agreement shall permit the Stockholders' Representative to receive nor
obligate Siemens to deliver to the Stockholders' Representative any consolidated
or other Tax Return or Income Tax Return of Siemens or any other Subsidiary or
Affiliate of Siemens (other than a Tax Return relating solely to the Company
and/or any of its Subsidiaries).

               (ii) Siemens shall not amend, or cause or permit the Company or
any Subsidiary to amend, any Income Tax Return filed with respect to any taxable
year or other taxable period beginning prior to the Measurement Date without the
prior written consent of the Stockholders' Representative, which consent shall
not be unreasonably withheld. Siemens and the Stockholders' Representative agree
to consult and resolve in good faith any disagreement regarding the withholding
of consent by the Stockholders' Representative, it being understood and agreed
that in the absence of any such resolution, any and all such disagreements shall
be resolved in a manner consistent with the procedures described in Section 7.7.



                                       35
<PAGE>   42
               (iii) Any overpayment in respect of Taxes relating to any taxable
year or other taxable period (or portion thereof, as determined below in clause
(c)) ending on or before the Measurement Date shall be for the benefit of the
Stockholders; provided that, any overpayment of Taxes attributable to the fiscal
1994 through 1996 taxable years of the Company or its Subsidiaries shall be for
the benefit of Siemens to the extent that such overpayments are reflected as an
asset on the balance sheet (as of the close of business on the Measurement Date)
prepared pursuant to Section 2.2. Upon written notification to Siemens, the
Stockholders' Representative, at its own expense, will be permitted to pursue
any overpayment to which it is entitled; provided that any action on the part of
the Stockholders' Representative shall not increase any Tax Liability of
Siemens, the Company or any of their respective Subsidiaries in any period
ending after the Measurement Date (in which event, such action shall require the
prior written consent of Siemens, which shall not be unreasonably withheld).

          (b) Notwithstanding Section 7.2, no claim for indemnification shall be
permitted for any Losses resulting solely from the failure of Siemens or the
Company or any Subsidiary to timely file any Tax Return required to be filed
(with extensions) after the Measurement Date or timely pay any Taxes required to
be paid after the Measurement Date.

          (c) Siemens and the Company (and/or the Company's Subsidiaries) will,
to the extent permitted by applicable law, elect with the relevant Tax authority
to close the taxable year of the Company and its Subsidiaries on the Measurement
Date. For purposes of this Agreement, in the case of any Taxes in respect of a
taxable period that begins on or before the Measurement Date and ends after the
Measurement Date, the portion of such Tax attributable to the pre-Measurement
Date period shall (i) in the case of real property or other similar Taxes that
are fixed and periodic in nature, be the amount of such Taxes for the entire
period multiplied by a fraction, the numerator of which is the number of days in
the period ending on the Measurement Date, and the denominator of which is the
number of days in the entire period; and (ii) in the case of all other Taxes, be
determined on the basis of an interim closing of the books at the end of the
Measurement Date. For purposes of clause (i) of the preceding sentence, any
credits against Tax shall be prorated based upon the fraction employed in such
clause (i).

          (d) Siemens shall not make an election pursuant to Section 338 of the
Code with respect to the Company or any Subsidiary without the prior written
consent of the Stockholders' Representative.

8. TERMINATION; EFFECT OF TERMINATION.

     8.1 Termination. This Agreement may be terminated, and the transactions
contemplated hereby may be abandoned whether prior to or after the adoption of
this Agreement by the Company's stockholders if:

          (a) at any time prior to the Effective Time, by mutual written
agreement of the parties hereto; provided, however, that if such termination is
to occur after the Initial Purchase Date, such termination must be approved in
accordance with Section 1.6(c);

          (b) at any time prior to the Initial Purchase Date, by either the
Company or Siemens upon notification to the non-terminating party by the
terminating party:

               (i) at any time 90 days following the date of this Agreement if
the Merger shall not have been consummated on or prior to such date and such
failure to consummate the Merger is not caused by a breach of this Agreement by
the terminating party;

               (ii) there has been a material breach of this Agreement on the
part of the non-terminating party and either (x) the non-terminating party fails
to cure such breach within 30 days


                                       36
<PAGE>   43
following notification thereof by the terminating party or (y) the breach is not
reasonably capable of being cured within 30 days after notice thereof; or

               (c) at any time prior to the Initial Purchase Date, by Siemens
upon the occurrence of a Trigger Event (as defined in Section 8.2).

     8.2 Effect of Termination. (a) If this Agreement is validly terminated by
either the Company or Siemens pursuant to Section 8.1, this Agreement will
forthwith become null and void and there will be no liability or obligation on
the part of either the Company, Siemens or Acquisition (or any of their
respective Representatives or affiliates), except (i) that the provisions of
Sections 5.3(b) and 9 will continue to apply following any such termination and
(ii) as provided in this Section 8.2.

               (b) If (i) Siemens terminates this Agreement pursuant to (A)
Section 8.1(b)(ii) or (B) Section 8.1(c), (ii) after the date hereof and prior
to such termination, a Person other than Siemens or its Affiliates shall have
made or announced an intention to make a proposal for an Acquisition Transaction
and (iii) the Company consummates an Acquisition Transaction or enters into a
definitive agreement with respect to an Acquisition Transaction within 12 months
following such termination, then the Company shall pay to Siemens a termination
fee in the amount of $5 million upon the closing of such Acquisition Transition.
The termination fee shall be payable not later than two business days after the
closing of such Acquisition Transaction, by wire transfer of immediately
available funds to an account designated by Siemens. If the termination fee is
not paid within two business days after the due date as provided above, (i) the
termination fee will bear interest at the rate of 12% per year (or if less, the
highest legally permissible rate) from such date until paid and (ii) the Company
will pay for all attorneys' fees and expenses incurred by Siemens in connection
with collecting such overdue amounts.

               (c) For purposes of this Agreement, a "Trigger Event" means any
of the following events: (i) the Company shall have entered into, or shall have
publicly announced its intention to enter into, a definitive agreement or
agreement in principle with respect to any Acquisition Transaction other than
the transactions contemplated by this Agreement; (ii) the Board of Directors of
the Company or any committee thereof shall have withdrawn its approval or
recommendation of this Agreement or the Merger, or modified its approval or
recommendation of this Agreement or the Merger in a manner adverse to Siemens or
Acquisition; (iii) the Board of Directors of the Company or any committee
thereof shall have made any recommendation with respect to an Acquisition
Transaction by any Person (other than Siemens or Acquisition) other than a
recommendation rejecting or against such Acquisition Transaction; or (iv) the
Company receives a proposal with respect to an Acquisition Transaction by any
Person (other than Siemens or Acquisition), and the Company's Board of Directors
takes a neutral position or makes no recommendation with respect to such
Acquisition Transaction after a reasonable amount of time (and in no event more
than five business days) has elapsed for the Company's Board of Directors to
review and make a recommendation with respect to such proposal consistent with
the Board's fiduciary duties.

9. FEES AND EXPENSES.

     9.1 Expenses. Subject to Section 9.2, each party hereto shall pay its own
expenses incidental to the preparation of this Agreement, the carrying out of
the provisions of this Agreement and the consummation of the transactions
contemplated hereby. In addition, (a) the unpaid fees and expenses of all
brokers, investment bankers, financial advisors, attorneys and accountants
engaged in connection with the preparation and negotiation of this Agreement or
the transactions contemplated hereby and whose compensation is payable by the
Company shall be reflected on invoices (the "Invoices") submitted to Siemens on
or prior to the Measurement Date, which Invoices shall include confirmation that
no further compensation beyond the amount reflected in the Invoice is or will be
payable by the Company (or the


                                       37
<PAGE>   44
Surviving Corporation, as successor to the Company) and (b) Siemens and the
Company shall each pay one-half of the aggregate premiums and surplus lines
premium tax charged thereon for the insurance policies described in Section
6.1(i).

     9.2 Stockholders of the Company. In no event shall Siemens, Acquisition or
the Company be liable (before or after the Closing) for any fees and expenses of
the stockholders of the Company relating to the transactions contemplated by
this Agreement, including, without limitation, legal, accounting and financial
advisory fees.

10. DEFINITIONS. As used in this Agreement the terms set forth below shall have
the following meanings:

          "AAA" shall have the meaning ascribed to such term in Section 7.7(d).

          "Acquisition" shall have the meaning ascribed to such term in the
first paragraph hereof.

          "Acquisition Price" shall have the meaning ascribed to such term in
Section 2.1(c).

          "Acquisition Common Stock" shall have the meaning ascribed to such
term in Section 2.1(a).

          "Adjusted Acquisition Price" shall have the meaning ascribed to such
term in Section 2.1(c).

          "Acquisition Transaction" shall have the meaning ascribed to such term
in Section 5.2.

          "Affiliate" of a Person shall mean any other Person who directly or
indirectly through one or more intermediaries controls, is controlled by or is
under common control with, such first Person.

          "Agreement" shall have the meaning ascribed to such term in the first
paragraph hereof.

          "Antitrust Division" shall have the meaning ascribed to such term in
Section 5.5.

          "Authorizations" shall have the meaning ascribed to such term in
Section 3.15(b).

          "Benefit Plan" shall mean any bonus, pension, profit sharing, deferred
compensation, written incentive compensation, stock ownership, stock purchase,
stock option, phantom stock, retirement, vacation, severance, disability, death
benefit, hospitalization, medical or other plan or arrangement providing
benefits to any current or former employee, officer, consultant or director of
the Company or any Subsidiary.

          "Call Option" shall have the meaning ascribed to such term in the
Recitals to this Agreement.

          "Certificates" shall have the meaning ascribed to such term in Section
2.4(b).

          "Certificate of Merger" shall have the meaning ascribed to such term
in Section 1.2.

          "Claim Notice" shall have the meaning ascribed to such term in Section
7.5.

          "claimant" shall have the meaning ascribed to such term in Section
7.7(d).

          "Closing" shall have the meaning ascribed to such term in Section 1.3.



                                       38
<PAGE>   45
          "Closing Date" shall have the meaning ascribed to such term in Section
1.3.

          "Closing Liquid Net Worth" shall mean the amount, computed as of the
Measurement Date and in a manner consistent with the methods used in the
preparation of the financial statements of the Company at or for the period
ended September 26, 1999 and as specified in Exhibit C, equal to the Company's
current assets (net of reserves) minus all of its liabilities, including for
this purpose (whether or not required by GAAP or otherwise to be accrued) an
accrual for the full amount of all amounts due or to become due on the part of
the Company or any Subsidiary of the Company in connection with or by reason of
the transactions contemplated by this Agreement, including without limitation or
duplication (i) those related to attorneys, accountants, investment bankers,
financial advisers and other professionals, (ii) all obligations in respect of
bonuses, severance or additional compensation payable to officers, directors,
employees and consultants (it being understood that liabilities under "double
trigger" change-of-control provisions shall not be included as liabilities for
purposes of calculating Closing Liquid Net Worth unless both triggers have
occurred prior to the Measurement Date), (iii) the Notes Redemption Premium and
(iv) one-half of the aggregate premiums and the related surplus lines premium
tax payable to the insurers for the insurance policies described in Section
6.1(i).

          "Closing Liquid Net Worth Adjustment" shall mean the amount by which
the Company's Closing Liquid Net Worth is less than $(165,685,000).

          "Code" shall mean the Internal Revenue Code of 1986, as amended.

          "Collateral Document" shall mean any certificate or schedule delivered
by a Person or any of its respective directors, officers, employees or trustees
pursuant to this Agreement.

          "Commonly Controlled Entity" shall have the meaning ascribed to such
term in Section 3.18(a).

          "Company" shall have the meaning ascribed to such term in the first
paragraph hereof.

          "Company Capital Stock" shall have the meaning ascribed to such term
in Section 3.2(a).

          "Company Common Stock" shall have the meaning ascribed to such term in
Section 2.1(c).

          "Company Designees" shall have the meaning ascribed to such term in
Section 1.6(a).

          "Company SEC Documents" shall have the meaning ascribed to such terms
in Section 3.4(c).

          "Company Stock Plans" shall have the meaning ascribed to such term in
Section 2.1(e).

          "Control" shall mean the possession of the power, directly or
indirectly, to direct or cause the direction of the management and policies of a
Person whether through the ownership of voting securities, by contract or
otherwise.

          "Debentures" shall mean the 5.5% Convertible Subordinated Debentures
due 2007 issued and outstanding pursuant to the Indenture dated March 18, 1987,
as supplemented, between Businessland, Inc. and Security Pacific National Bank.



                                       39
<PAGE>   46
          "December Financial Statements" shall have the meaning ascribed to
such term in Section 3.8.

          "DGCL" shall have the meaning ascribed to such term in Section 1.1.

          "Disclosure Schedule" shall have the meaning ascribed to such term in
Section 3.

          "Dissenting Shares" shall have the meaning ascribed to such term in
Section 2.1(d).

          "Drag-Along Rights" shall have the meaning ascribed to such term in
the Recitals to this Agreement.

          "Effective Time" shall have the meaning ascribed to such term in
Section 1.2.

          "Employees" shall have the meaning ascribed to such term in Section
3.19.

          "Environmental Claim" shall mean any written claim, action,
investigation or notice by any Person alleging potential liability arising out
of, based on, or resulting from (a) the presence or release into the
environment, including, without limitation, the indoor environment, of any
Hazardous Substance at any location, whether or not owned by the Company or (b)
circumstances forming the basis of any violation, or alleged violation, of any
Environmental Law.

          "Environmental Laws" shall mean all applicable federal, state, local
or foreign laws, statutes, rules and regulations, orders, decrees, judgments,
arbitration awards, agreements and permits relating to protection and clean-up
of the environment and protection of human health (excluding those relating
solely to occupational health and safety), including those relating to the
generation, handling, disposal, transportation or release of Hazardous
Substances.

          "Escrow Agent" shall mean ChaseMellon Shareholder Services LLC.

          "Escrow Agreement" shall mean an agreement substantially in the form
of Exhibit I, executed and delivered at the Closing or, if earlier, on the
Initial Purchase Date.

          "Escrow Indemnity Period" shall have the meaning ascribed to such term
in Section 7.1.

          "Escrow Period" shall mean the period beginning on the Initial
Distribution Date and ending on the first date on which funds held in the escrow
created pursuant to the Escrow Agreement are permitted to be released to the
Payment Agent under the terms of the Escrow Agreement.

          "ERISA" shall have the meaning ascribed to such term in Section
3.18(a).

          "European Authorities" shall have the meaning ascribed to such term in
Section 5.5.

          "European Statutes" shall have the meaning ascribed to such term in
Section 5.5.

          "Exchange Act" shall have the meaning ascribed to such term in Section
1.6(b).

          "Exchange Fund" shall have the meaning ascribed to such term in
Section 2.4(a).

          "14(f) Material" shall have the meaning ascribed to such term in
Section 1.6(b).

          "FTC" shall have the meaning ascribed to such term in Section 5.5.



                                       40
<PAGE>   47
          "GAAP" shall have the meaning ascribed to such term in Section 3.7.

          "Governmental Entity" shall mean any: (i) federal, state, local,
foreign or international government; (ii) court, arbitral or other tribunal or
governmental or quasi-governmental authority of any nature (including any
governmental agency, political subdivisions, instrumentalities, branch,
department, official, or entity); or (iii) body exercising, or entitled to
exercise, any administrative, executive, judicial, legislative, police,
regulatory, or taxing authority or power of any nature pertaining to government.

          "HSR Act" shall have the meaning ascribed to such term in Section
3.4(b).

          "Hazardous Substances" shall mean any and all hazardous and toxic
substances, wastes or materials, any pollutants, contaminants, or dangerous
materials (including, but not limited to, polychlorinated biphenyls, friable
asbestos, volatile and semi-volatile organic compounds, oil, petroleum products
and fractions, and any materials which include hazardous constituents or become
hazardous, toxic, or dangerous when their composition or state is changed), or
any other similar substances or materials regulated under Environmental Laws.

          "IRS" shall have the meaning ascribed to such term in Section 3.17(b).

          "Income Taxes" shall mean Federal income taxes and all state, local
and municipal Taxes imposed on or measured by net income, or income, franchise
or similar taxes based on gross receipts.

          "Income Tax Return" shall mean any Tax Return filed in respect of
Income Taxes.

          "Incremental Amount" shall have the meaning ascribed to such term in
Section 2.1(c).

          "Indemnified Parties" shall have the meaning ascribed to such term in
Section 7.2.

          "Indemnity Amount" shall have the meaning ascribed to such term in
Section 2.1(c).

          "Independent Accountant" shall have the meaning ascribed to such term
in Section 2.2(c).

          "Information Statement" shall have the meaning ascribed to such term
in Section 3.4(b).

          "Initial Distribution Date" shall have the meaning ascribed to such
term in Section 2.3(a).

          "Initial Purchase" shall have the meaning ascribed to such term in the
Recitals to this Agreement.

          "Initial Purchase Date" shall have the meaning ascribed to such term
in the Recitals to this Agreement.

          "Intellectual Property" shall mean all United States and foreign
intellectual property rights arising under statutory or common law, and whether
or not perfected, including, without limitation (a) all patents, patent
applications, patent disclosures and inventions and discoveries which may be
patentable and improvements thereto owned or licensable by the Company or its
Subsidiaries, (b) registered and unregistered trademarks, service marks, trade
dress, logos, trade names and corporate names, and registrations and
applications for registration thereof, including all marks registered in the
United States Patent and Trademark Office and any foreign trademark offices, (c)
rights associated with works of authorship including copyrights and moral rights
in both published and unpublished works and


                                       41
<PAGE>   48
registrations and applications for registration thereof, (d) computer software,
data and documentation (including all source codes and object codes), (e) rights
relating to trade secrets and confidential business information (including
ideas, formulas, compositions, inventions (whether patentable or unpatentable
and whether or not reduced to practice), know-how, manufacturing and production
processes and techniques, research and development information, drawings,
specifications, designs, plans, charts, diagrams, proposals, technical data,
data bases, copyrightable works, financial, marketing and business data, pricing
and cost information, business and marketing plans and customer and supplier
lists and information), (f) any rights analogous to those set forth in this
paragraph and any other proprietary rights relating to intangible property and
(g) copies and tangible embodiments of any of the foregoing (in whatever form or
medium) in which the Company or its Subsidiaries has any rights, and divisions,
continuations, renewals, reissues and extensions of the foregoing (as and to the
extent applicable) now existing, or hereafter filed, issued or acquired.

          "Invoices" shall have the meaning ascribed to such term in Section
9.1.

          "Laws" shall have the meaning ascribed to such term in Section
3.15(a).

          "Lien" shall mean any mortgage, pledge, lien, security interest,
conditional or installment sale agreement, encumbrance, charge or other claims
of third parties of any kind, except for (a) liens for Taxes or governmental
charges or claims (i) not yet due and payable or (ii) being contested in good
faith, if a reserve or other appropriate provision, if any, as shall be required
by GAAP shall have been made therefor on the December Financial Statements; (b)
statutory liens of landlords, lien of carriers, warehousemen's, mechanics and
materialmen's and other liens imposed by law incurred in the ordinary course of
business for sums (i) not yet due and payable and (ii) being contested in good
faith, if a reserve or other appropriate provision, if any, as shall be required
by GAAP shall have been made therefor on the December Financial Statements; (c)
liens incurred or deposits made in connection with workers' compensation,
unemployment insurance and other similar types of social security programs in
each case in the ordinary course of business consistent with past practice; (d)
purchase money security interests incurred in the ordinary course of business,
consistent with past practice; (e) easements, rights-of-way, restrictions and
other similar charges or encumbrances, in each case, which do not interfere with
the ordinary conduct of the Company's operations and do not or would not
materially detract from the value of the property to which such encumbrance
relates; and (f) liens arising out of acts done or suffered to be done by, and
judgments against, Siemens or Acquisition, and those claiming by, through or
under Siemens or Acquisition; and (g) liens, security interests or encumbrances
that have been placed by any developer, landlord or other third party on
property with respect to which the Company and the applicable Subsidiary has
easement rights or leasehold interests and subordination or similar agreements
relating thereto.

          "Losses" shall have the meaning ascribed to such term in Section 7.2.

          "Material Adverse Effect" shall mean a material adverse effect on the
assets, business, condition (financial or otherwise) or results of operations of
the Company and its Subsidiaries taken as a whole.

          "Measurement Date" shall have the meaning ascribed to such term in
Section 2.2(a).

          "Merger" shall have the meaning ascribed to such term in the Recitals
to this Agreement.

          "Merger Price" shall have the meaning ascribed to such term in Section
2.1(c).

          "Microsoft Warrant" shall have the meaning ascribed to such term in
Section 3.2(a)



                                       42
<PAGE>   49
          "1997 IBM Warrant" shall have the meaning ascribed to such term in
Section 3.2(a).

          "NED Plan" shall have the meaning ascribed to such term in Section
3.2(a).

          "Notes" shall mean the 12.5% Senior Subordinated Notes due 2006 issued
and outstanding pursuant to the Indenture dated July 29, 1998 among the Company,
the Subsidiary Guarantors (as defined therein) and Marine Midland Bank, N.A., as
trustee

          "Notes Redemption Premium" shall mean (i) an amount in respect of the
Debentures equal to $32.2 million less the book value of the Debentures on the
Measurement Date plus (ii) the excess of (x) the amount required to be expended
by Siemens or its Affiliates to repurchase or redeem all of the outstanding
Notes, over (y) the aggregate outstanding principal balances of the Notes on the
Measurement Date plus (iii) the reasonable costs and expenses (including fees
and expenses of advisors and legal counsel) incurred or to be incurred in
connection with repurchasing, redeeming or otherwise repaying the Notes and
Debentures. The Notes Redemption Premium shall not include any amount paid by
Siemens to repurchase any debt security that is in excess of the contractual
repurchase or redemption price for such security (including any premium or
penalty) that will be payable following the Merger.

          "Notice of Disagreement" shall have the meaning ascribed to such term
in Section 2.2(c).

          "Option" shall have the meaning ascribed to such term in Section
2.1(e).

          "Outstanding Share Amount" shall have the meaning ascribed to such
term in Section 2.1(c).

          "Party" shall mean Siemens, Acquisition, the Company and its
Subsidiaries and the Stockholders' Representative.

          "Payment Agent" shall mean a bank or trust company designated as the
exchange and paying agent by Siemens and reasonably satisfactory to the Company.

          "Pension Plans" shall have the meaning ascribed to such term in
Section 3.18(a).

          "Person" shall mean any individual, corporation, partnership, limited
partnership, limited liability company, other business organization, trust,
association or entity or government agency or authority.

          "Plans" shall have the meaning ascribed to such term in Section
3.18(a).

          "Potential Acquiror" shall have the meaning ascribed to such term in
Section 5.2.

          "Pre-Measurement Date Tax Liabilities" shall mean all obligations for
Income Taxes owed by the Company (or the Surviving Corporation as its successor
in the Merger) and its Subsidiaries for any period ending on or prior to the
Measurement Date which are actually paid by the Company (or the Surviving
Corporation as its successor in the Merger), other than (i) any Income Taxes
directly resulting from any action taken by Siemens, the Company, their
affiliates or agents of any of the foregoing on the Measurement Date or treated
as occurring on the Measurement Date (including, for example, any Income Taxes
resulting from a Section 338 election made with respect to the Company or any of
its Subsidiaries) other than any action taken by the Company or its Subsidiaries
in the ordinary course of business, and (ii) Income Taxes that are covered by
proper accruals or reserves on the books of the Company or its Subsidiaries on
the Measurement Date.



                                       43
<PAGE>   50
          "Put Option" shall have the meaning ascribed to such term in the
Recitals to this Agreement.

          "Remaining Escrow Balance" shall mean the amount of funds available
pursuant to the Escrow Agreement to be released after payment of all sums due
Siemens, the Stockholders' Representative and the Escrow Agent, at the end of
the Escrow Period.

          "Representative" shall have the meaning ascribed to such term in
Section 5.2.

          "SEC" shall have the meaning ascribed to such term in Section 3.4(b).

          "Secretary of State" shall have the meaning ascribed to such term in
Section 1.2.

          "Securities Act" shall have the meaning ascribed to such term in
Section 3.4(c).

          "Siemens" shall have the meaning ascribed to such term in the first
paragraph hereof.

          "Stockholder Approval" shall have the meaning ascribed to such term in
Section 3.3.

          "Stockholders' Representative" shall have the meaning ascribed to such
term in Section 2.2 (a), and also includes any replacement appointed pursuant to
Section 7.4(c).

          "Stockholder Representative Expense Amount" shall have the meaning
ascribed to such term in Section 2.1(c).

          "Stockholders Agreement" shall have the meaning ascribed to such term
in the Recitals to this Agreement.

          "Subsidiary" shall mean any corporation, partnership, joint venture or
other entity in which the Company (a) owns, directly or indirectly, 50% or more
of the outstanding voting securities or equity interests or (b) is a general
partner.

          "Surviving Corporation" shall have the meaning ascribed to such term
in Section 1.1.

          "Surviving Corporation Common Stock" shall have the meaning ascribed
to such term in Section 2.1(a).

          "Tax" (and, with correlative meaning, "Taxes" and "Taxable") shall
mean any and all taxes, fees, levies, duties, tariffs, imposts, and other
charges in the nature thereof (together with any and all interest, penalties,
additions to tax and additional amounts imposed with respect thereto) imposed by
any government or taxing authority, including, without limitation: taxes or
other charges on or with respect to income, franchises, windfall or other
profits, gross receipts, property, sales, use, capital stock, payroll,
employment, social security, workers' compensation, unemployment compensation,
or net worth; taxes or other charges in the nature of excise, withholding, ad
valorem, stamp, transfer, value added, or gains taxes; license, registration and
documentation fees; and customs duties, tariffs, and similar charges.

          "Tax Escrow Agent" shall mean ChaseMellon Shareholder Services LLC.

          "Tax Escrow Agreement" shall mean an agreement substantially in the
form of Exhibit J, executed and delivered at the Closing or, if earlier, on the
Initial Purchase Date.

          "Tax Escrow Amount" shall have the meaning ascribed to such term in
Section 2.1(c).



                                       44
<PAGE>   51
          "Tax Escrow Balance" shall mean the amount of funds available pursuant
to the Tax Escrow Agreement to be distributed after payment of all sums due to
Siemens and the Tax Escrow Agent at the end of the Tax Matters Escrow Period.

          "Tax Insurance Election" shall have the meaning ascribed to such term
in Section 6.1(i).

          "Tax Matters Escrow Period" shall mean the period beginning on the
Initial Distribution Date and ending on the business day following the first
date on which funds held in escrow pursuant to the Tax Escrow Agreement are
permitted to be delivered to the Payment Agent pursuant to the terms of the Tax
Escrow Agreement.

          "Tax Matters Settlement Shortfall Amount" shall mean the amount, if
any, by which the amounts actually paid to dispose of the tax matters disclosed
in Schedule 6.1(i) and to discharge any Liability for Taxes (federal, state or
other) arising out of or in connection with those proceedings, including without
limitation, all legal, accounting and other professional fees and expenses
incurred with respect thereto, exceed the sum of (i) all amounts available under
the Tax Escrow Agreement to pay such amounts plus (ii) all funds received by
Siemens under the insurance policies described in Section 6.1(i) to pay such
amounts.

          "Tax Return" shall mean any return, report or similar statement
required to be filed with respect to any Tax (including any attached schedules),
including, without limitation, any information return, claim for refund, amended
return or declaration of estimated Tax and all federal, state, local and foreign
returns, reports and similar statements.

          "Trademarks" shall have the meaning ascribed to such term in Section
3.16(b).

          "Trigger Event" shall have the meaning ascribed to such term in
Section 8.2(c).

          "Warrant" shall have the meaning ascribed to such term in Section
2.1(f).

          "Warrant Agreements" shall have the meaning ascribed to such term in
Section 3.2(a).

          "Welfare Plans" shall have the meaning ascribed to such term in
Section 3.18(a).

          "Year 2000 Compliant" shall mean:

          (a) that (i) all of the equipment and systems used by the Company and
its Subsidiaries (other than any third party software or systems included
therein); and (ii) all of the products designed, developed, under design or
development, licensed, manufactured, supported, sold, distributed and/or
maintained by the Company and its Subsidiaries (other than any third party
software or systems included therein) do not and will not experience any
premature cancellation or expiration of contractual rights or deletion of data,
or any malfunctions or other problems in connection with the year 2000 (and all
subsequent years) as distinct from 1900's years;

          (b) that no value for any current date will cause any interruption in
operation of any of the equipment, systems and/or products described in clause
(a) above;

          (c) that all date-based functionality of the equipment, systems and/or
products described in clause (a) above will behave consistently for dates prior
to, during and after year 2000; and



                                       45
<PAGE>   52
          (d) that in all interfaces and data storage of the Company and its
Subsidiaries, the century in any date must be specified either explicitly or by
unambiguous algorithms or inferencing rules.

11. MISCELLANEOUS.

     11.1 Press Releases. Except as required by law, none of Siemens,
Acquisition or the Company shall issue any press release or otherwise make
public any information with respect to the subject matter of this Agreement nor
the transactions contemplated hereby, without the prior written consent of each
of the other parties to this Agreement.

     11.2 Integration. This Agreement and the agreements expressly referred to
or contemplated herein set forth the entire understanding of the parties hereto
with respect to the transactions contemplated hereby, and, except as set forth
in this Agreement, such other agreements, and the Exhibits hereto, there are no
representations or warranties, express or implied, made by any party to this
Agreement (or any of their Affiliates) with respect to the subject matter of
this Agreement. Any and all previous agreements and understandings between or
among the parties regarding the subject matter hereof, whether written or oral,
are superseded by this Agreement and the agreements referred to or contemplated
herein.

     11.3 Assignment and Binding Effect. This Agreement may not be assigned by
either party hereto without the prior written consent of the other party;
provided, however, that Acquisition may assign its rights and obligations under
this Agreement to any directly or indirectly wholly owned subsidiary of Siemens'
ultimate parent company, Siemens Aktiengesellschaft, that is a corporation of
Delaware, any other State of the United States or the District of Columbia (and
the law of such State or the District of Columbia permits such corporation to
merge with the Company) upon written notice to the Company if the assignee shall
assume the obligations hereunder. All the terms and provisions of this Agreement
shall be binding upon and inure to the benefit of and be enforceable by the
respective successors and assigns of the parties hereto.

     11.4 Waiver. Any term or provision of this Agreement may be waived at any
time by the party entitled to the benefit thereof only by a written instrument
duly executed by such party. In the event such waiver is requested or to be made
on behalf of the Company after the Initial Purchase Date, such waiver must be
approved by the Company Designees.

     11.5 Notices. Any notice, request, demand, waiver, consent, approval, or
other communication which is required or permitted to be given to any party
hereunder shall be in writing and shall be deemed given only if delivered to the
party personally or sent to the party by facsimile transmission (promptly
followed by a hard-copy delivered in accordance with this Section 11.5), by
reputable overnight courier service or by registered or certified mail (return
receipt requested), with postage and registration or certification fees thereon
prepaid, addressed to the party at its address set forth below:

      If to Siemens or Acquisition:

               Siemens Corporation
               153 East 53rd Street
               New York, New York 10022
               Facsimile: (212) 258-4945
               Attention:  General Counsel

               with a copy to:



                                       46
<PAGE>   53
               Clifford Chance Rogers & Wells LLP
               200 Park Avenue
               New York, New York 10166
               Facsimile: (212) 878-8375
               Attention:  John A. Healy

      If to the Company:

               Entex Information Services, Inc.
               Six International Drive
               Rye Brook, New York  10573
               Facsimile:  (914) 935-3880
               Attention:  Lynne A. Burgess

               with a copy to:

               Cahill Gordon & Reindel
               80 Pine Street
               New York, New York  10085
               Facsimile:  (212) 269-5420
               Attention:  Gerald S. Tanenbaum

      If to the Stockholders' Representative:

               Dort A. Cameron, III
               The Airlie Group
               115 East Putnam Avenue
               Greenwich, Connecticut 06830
               Facsimile:  (203) 661-0479

               with a copy to:

               Cahill Gordon & Reindel
               80 Pine Street
               New York, New York  10085
               Facsimile:  (212) 269-5420
               Attention:  Gerald S. Tanenbaum

or to such other address or Person as any party may have specified in a notice
duly given to the other party as provided herein. Such notice, request, demand,
waiver, consent, approval or other communication will be deemed to have been
given as of the date so delivered.

     11.6 Amendment. This Agreement shall not be amended, modified, revised,
supplemented or terminated orally and no waiver of compliance with any provision
hereof and no consent provided for herein shall be effective other than by a
written instrument executed by all of the parties hereto. This Agreement may be
amended upon the taking of requisite corporate action by all of the parties
hereto and, if such amendment is requested or to be made after the Initial
Purchase Date, such amendment must be approved in accordance with Section
1.6(c).



                                       47
<PAGE>   54
     11.7 Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND INTERPRETED AND
ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING
EFFECT TO ANY DELAWARE CHOICE OF LAW PRINCIPLES.

     11.8 Third Party Beneficiaries. Except as provided in Section 5.11, the
representations, warranties, covenants and agreements contained in this
Agreement are for the sole benefit of the parties hereto, and their respective
successors and assigns, and they shall not be construed as conferring, and are
not intended to confer, any rights on any other Person.

     11.9 Performance. In the event that any Party shall fail or refuse to
consummate the transactions contemplated by this Agreement or any default under,
or breach of, any representation, warranty or covenant of this Agreement on the
part of any Party shall have occurred that results in the failure to consummate
the transactions contemplated hereby, then in addition to the other remedies
provided in this Agreement, any other Party may seek to obtain an order of
specific performance thereof against the breaching Party from a court of
competent jurisdiction. In addition, any Party shall be entitled to obtain from
the breaching Party court costs and reasonable attorneys' fees incurred by it in
enforcing its rights hereunder.

     11.10 Severability. If any term or other provision of this Agreement is
determined to be invalid, illegal or incapable of being enforced by any rule of
law or public policy, all other terms and provisions of the Agreement shall
remain in full force and effect. Upon such determination, the parties hereto
shall negotiate in good faith to modify this Agreement so as to give effect to
the original intent of the parties to the fullest extent permitted by applicable
law.

     11.11 Extensions. At any time prior to the Measurement Date, either party
may by appropriate action, extend the time for compliance by or waive
performance of any representation, warranty, agreement, condition or obligation
of the other party.

     11.12 Section Headings. All section headings are for convenience only and
shall in no way modify or restrict any of the terms or provisions hereof.

     11.13 Exhibits; Disclosure Schedule. All Exhibits referred to herein and
the Disclosure Schedule are intended to be and hereby are specifically made a
part of this Agreement. Each exception to a representation or warranty of the
Company that is set forth in the Disclosure Schedule or is identified by
appropriate cross-referencing to, or has been grouped under a heading referring
to, a specific individual Section of this Agreement and, except as otherwise
specifically stated with respect to such exception in the Disclosure Schedule,
relates only to such Section.

     11.14 Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original, and the Company,
Siemens, and Acquisition may become a party hereto by executing a counterpart
thereof. This Agreement and any counterpart so executed shall be deemed to be
one and the same instrument.



                                       48
<PAGE>   55
         IN WITNESS WHEREOF, the parties hereto, intending to be legally bound,
have duly executed this Agreement on the date first above written.

                                 SIEMENS CORPORATION


                                 By:/s/ Gerald Wright
                                    ---------------------------------
                                    Name:  Gerald Wright
                                    Title: Executive Vice President and
                                           Chief Financial Officer


                                 By:/s/ Michael Schiefen
                                    ---------------------------------
                                    Name:  Michael Schiefen
                                    Title: Vice President, Corporate Development

                                 EMILIA ACQUISITION CORP.





                                 By:/s/ Michael Schiefen
                                    ---------------------------------
                                     Name:  Michael Schiefen
                                     Title: Vice President

                                 ENTEX INFORMATION SERVICES, INC.




                                 By:/s/ Kenneth A. Ghazey
                                    ---------------------------------
                                     Name:  Kenneth A. Ghazey
                                     Title: President



<PAGE>   1
                                                                       EXHIBIT I


                                ESCROW AGREEMENT

         ESCROW AGREEMENT, dated as of ________, 2000, among Siemens
Corporation, a Delaware corporation ("Siemens"), Entex Information Services,
Inc., a Delaware corporation (the "Company"), ChaseMellon Shareholder Services,
L.L.C., a New Jersey limited liability company, as escrow agent (the "Escrow
Agent"), and Dort A. Cameron, III (or such successor person selected as
Stockholders' Representative pursuant to the Merger Agreement (as defined below)
the "Stockholders' Representative").


                                    RECITALS

         This Agreement is being entered into pursuant to an Agreement and Plan
of Merger dated as of March 13, 2000 (the "Merger Agreement"; capitalized terms
not defined herein shall have the meanings ascribed to them in the Merger
Agreement) among Siemens, Emilia Acquisition Corp., a Delaware corporation
("Acquisition"), and the Company in order to provide for the deposit with the
Escrow Agent of funds that will be held and disbursed, as hereinafter provided
and as provided in the Merger Agreement, to make indemnity payments to the
Indemnified Parties and (to the extent of any remaining funds) to make payments
to certain holders of Company Common Stock.

         NOW, THEREFORE, the parties hereby agree as follows:

1. Appointment of the Escrow Agent; Deposit of Escrow Amount. Siemens, the
Company and the Stockholders' Representative hereby constitute and appoint the
Escrow Agent as, and the Escrow Agent hereby agrees to assume and perform the
duties of, escrow agent under and pursuant to this Agreement. The Escrow Agent
acknowledges receipt of an executed copy of the Merger Agreement. Pursuant to
the Merger Agreement, funds in the amount of Twenty Million Dollars
($20,000,000) (the "Escrow Amount") have been or are to be deposited with the
Escrow Agent by Siemens.

2. The Escrow Fund. The Escrow Amount and all earnings thereon (the Escrow
Amount and all such earnings being referred to herein together as the "Escrow
Fund") shall be held by the Escrow Agent as a trust fund in a separate account
maintained for the purpose, on the terms and subject to the conditions of this
Agreement. The Escrow Fund shall not be subject to lien or attachment by any
creditor of any party hereto and shall be used solely for the purpose set forth
in this Agreement. Except as set forth in Section 8 hereof, amounts held in the
Escrow Fund shall not be available to, and shall not be used by, the Escrow
Agent to set off any obligations of Siemens, the Company, the Stockholders'
Representative or any former holder of Company Common Stock owing to the Escrow
Agent in any capacity.

3. Investment of the Escrow Fund; Taxes.

         (a) Unless otherwise directed in writing by Siemens and the
Stockholders' Representative, the Escrow Agent shall invest and reinvest all
cash funds held from time to time as part of the Escrow Fund, in bonds or other
fixed-income securities, the interest on which is not subject to U.S. federal
income tax (including alternative minimum tax) or to New York City or New York
State income tax; or if such securities are not available for purchase, in
obligations of, or guaranteed by, the government of the United States of America
or any State thereof or the District of Columbia, or agencies of any of the
foregoing, having maturities of not greater than 90 days (or, if earlier, the
Termination Date (as hereinafter defined)); provided that such bonds or other
obligations are rated at least A by Moody's Investors Service, Inc. ("Moody's")
and A by Standard & Poor's Corporation ("S&P").
<PAGE>   2
         (b) It is not anticipated that Taxes will be payable in respect of
earnings on the Escrow Fund; however, to the extent that such Taxes are payable,
they shall be the obligation of and shall be paid when due by Siemens but
Siemens shall be entitled to be reimbursed the amount of any and all such Tax
payments from the Escrow Fund in accordance with Section 5(a). The Escrow Agent
shall have no duty or obligation with respect to notifying any party of any
taxes due or monitoring the payment of any taxes. Siemens hereby agrees to
indemnify and hold harmless the Escrow Agent from and against any liability
arising from such taxes, including any failure to pay such taxes.

4. Claims Against the Escrow Fund.

         (a) Concurrently with the delivery of a Claim Notice to the Escrow
Agent and the Stockholders' Representative pursuant to Section 7.5 of the Merger
Agreement, Siemens will deliver to the Escrow Agent a certificate in
substantially the form of Annex I attached hereto (a "Certificate of
Instruction"). No Certificate of Instruction may be delivered by Siemens after
5:00 p.m. New York time on the business day immediately preceding the
Termination Date. The Escrow Agent shall give written notice to the Company and
the Stockholders' Representative of its receipt of a Certificate of Instruction
not later than the second business day next following receipt thereof, together
with a copy of such Certificate of Instruction.

         (b) If the Escrow Agent (i) shall not, within 30 calendar days
following its receipt of a Certificate of Instruction (the "Objection Period"),
have received from the Stockholders' Representative a certificate in
substantially the form of Annex II attached hereto (an "Objection Certificate")
disputing the right of the applicable Indemnified Party to the Owed Amount (as
defined in the Certificate of Instruction) referred to in such Certificate of
Instruction, or (ii) shall have received such an Objection Certificate within
the Objection Period and shall thereafter (whether before or after the end of
the Objection Period) have received ether (x) a certificate from Siemens and the
Stockholders' Representative substantially in the form of Annex III attached
hereto (a "Resolution Certificate") stating that Siemens and the Stockholders'
Representative have agreed that the Owed Amount referred to in such Certificate
of Instruction (or a specified portion thereof) is payable to one or more of the
Indemnified Parties or (y) a copy of a final order of the arbitration panel
appointed pursuant to Section 7.7 of the Merger Agreement (accompanied by a
certificate of Siemens or the Stockholders' Representative substantially in the
form of Annex IV attached hereto (an "Arbitration Certificate")) stating that
the Owed Amount referred to in such Certificate of Instruction (or a specified
portion thereof) is payable to one or more of the Indemnified Parties, then the
Escrow Agent shall, on the second business day next following (x) the expiration
of the Objection Period or (y) the Escrow Agent's receipt of a Resolution
Certificate or an Arbitration Certificate, as the case may be, pay over to
Siemens from the Escrow Fund, by wire transfer of immediately available funds to
a bank account of Siemens' designation, the amount set forth in said Certificate
of Instruction or, if such Resolution Certificate or Arbitration Certificate
specifies that an amount other than such Owed Amount is payable, such other
amount.

         (c) The Escrow Agent shall give written notice to the Stockholders'
Representative and Siemens of its receipt of an Objection Certificate not later
than the second business day next following receipt thereof, together with a
copy of such Objection Certificate. The Escrow Agent shall give written notice
to Siemens and the Stockholders' Representative of its receipt of an Arbitration
Certificate or Resolution Certificate not later than the second business day
next following receipt thereof, together with a copy of such Arbitration
Certificate or Resolution Certificate, as the case may be.

         (d) Upon the payment by the Escrow Agent of the Owed Amount referred to
in a Certificate of Instruction, such Certificate of Instruction shall be deemed
cancelled. Upon the receipt by the Escrow Agent of a Resolution Certificate or
an Arbitration Certificate and the payment by the Escrow Agent of the Owed
Amount (or if such Resolution Certificate or Arbitration Certificate specifies
that an amount other

                                       2
<PAGE>   3
than such Owed Amount is payable, such other amount), the related Certificate of
Instruction shall be deemed cancelled.

         (e) Upon Siemens' determination that it has no claim or has released
its claim with respect to an Owed Amount referred to in a Certificate of
Instruction (or a specified portion thereof), Siemens will promptly deliver to
the Escrow Agent a certificate substantially in the form of Annex V attached
hereto (a "Siemens Cancellation Certificate") canceling such Certificate of
Instruction (or such specified portion thereof, as the case may be), and such
Certificate of Instruction (or portion thereof) shall thereupon be deemed
cancelled. The Escrow Agent shall give written notice to Siemens and the
Stockholders' Representative of its receipt of a Siemens Cancellation
Certificate not later than the second business day next following receipt
thereof, together with a copy of such Siemens Cancellation Certificate.

         (f) Upon receipt of a final order of the arbitration panel appointed
pursuant to Section 7.7 of the Merger Agreement stating that it is a final order
and that none of the Owed Amount referred to in a Certificate of Instruction as
to which the Stockholders' Representative delivered an Objection Certificate
within the Objection Period is payable to any Indemnified Party pursuant to the
Merger Agreement or this Agreement, Siemens and the Stockholders' Representative
will promptly deliver to the Escrow Agent a copy of such order (accompanied by a
certificate substantially in the form of Annex VI attached hereto (a
"Representative Cancellation Certificate")) cancelling such Certificate of
Instruction, and such Certificate of Instruction shall thereupon be deemed
cancelled. The Escrow Agent shall give written notice to the Stockholders'
Representative and Siemens of its receipt of a Representative Cancellation
Certificate not later than the second business day next following receipt
thereof, together with a copy of such Representative Cancellation Certificate.

5. Release of Escrow Fund.

         (a) Earnings Tax Release. To the extent that taxes in respect of
earnings on the Escrow Fund become due and payable by Siemens prior to the
Termination Date (as hereinafter defined), Siemens shall notify the
Stockholders' Representative and the Escrow Agent and upon receipt of such
written notice executed by Siemens and the Stockholders' Representative, the
Escrow Agent shall pay over to Siemens from the Escrow Fund, by wire transfer of
immediately available funds to a bank account of Siemens' designation, a
percentage of the taxable earnings sufficient to pay any incremental income
Taxes imposed on Siemens as a result of such taxable earnings, as determined by
Siemens, subject to the consent of the Stockholders' Representative, which
consent shall not be unreasonably withheld.

         (b) Stockholders' Representative Expense Release. To the extent that
the Stockholders' Representative incurs any costs or expenses in connection with
the performance of his duties and obligations under the Merger Agreement and
this Agreement in his capacity as the Stockholders' Representative that exceed
the Stockholders' Representative Expense Amount actually paid to the
Stockholders' Representative pursuant to the Merger Agreement, the Stockholders'
Representative shall notify Siemens and the Escrow Agent and upon receipt of
such written notice executed by the Stockholders' Representative, the Escrow
Agent shall pay over to the Stockholders' Representative from the Escrow Fund,
by wire transfer of immediately available funds to a bank account of the
Stockholders' Representative's designation, the amount set forth in such notice.

         (c) Termination Date. The Escrow Agent shall on the date that is
eighteen months after the Measurement Date (the "Termination Date") transfer
from the Escrow Fund to a separate sub-account (the "Release Account") an amount
equal to (x) the remaining balance of the Escrow Fund less (y) (A) the sum of
any amounts designated in Certificates of Instruction received by the Escrow
Agent prior to 5:00 p.m. New York time on the business day immediately preceding
the Termination Date that have not been cancelled in accordance with paragraph
(d), (e) or (f) of Section 4; (B) the sum of the amounts released or

                                       3
<PAGE>   4
to be released pursuant to paragraphs (a) and (b) above; and (C) the fees and
expenses of the Escrow Agent to be deducted from the Escrow Fund as set forth in
Section 8. If at any time after the Termination Date the entire balance of the
Escrow Fund exceeds the sum at that time of the amounts designated in
Certificates of Instruction received by the Escrow Agent prior to the
Termination Date that have not been cancelled in accordance with paragraph (d),
(e) or (f) of Section 4, the Escrow Agent shall promptly transfer to the Release
Account the amount of such excess. At such time on or following the Termination
Date as all Certificates of Instruction received by the Escrow Agent prior to
the Termination Date have been cancelled in accordance with paragraph (d), (e)
or (f) of Section 4, the Escrow Agent shall promptly transfer to the Release
Account the balance in the Escrow Fund. Funds (if any) deposited and held from
time to time pursuant to this Agreement in the Release Account, shall be
released to the former holders of Company Common Stock entitled thereto in
accordance with the provisions of the Merger Agreement, as instructed in writing
by the Stockholders' Representative. After all funds have been disbursed from
the Escrow Account and the Release Account, this Agreement (other than Sections
6, 7 and 8) shall automatically terminate.

6. Duties and Obligations of the Escrow Agent. The duties and obligations of the
Escrow Agent shall be limited to and determined solely by the provisions of this
Agreement and the certificates delivered in accordance herewith, and the Escrow
Agent is not charged with knowledge of or any duties or responsibilities in
respect of any other agreement or document (including the Merger Agreement). In
furtherance and not in limitation of the foregoing:

         (a) the Escrow Agent shall not be liable for any loss of interest or
any penalty sustained or imposed as a result of investments, reinvestments,
sales or liquidations made hereunder in accordance with the terms hereof,
including any liquidation of any investment of the Escrow Fund prior to its
maturity effected in order to make a payment (including any payment of taxes)
required by the terms of this Agreement;

         (b) the Escrow Agent shall be fully protected and shall incur no
liability in relying in good faith upon any written certification, notice,
direction, request, waiver, consent, receipt or other document that the Escrow
Agent reasonably believes to be genuine and duly authorized, executed and
delivered (including, but not limited to, any documentation from the arbitration
panel appointed pursuant to Section 7.7 of the Merger Agreement);

         (c) the Escrow Agent shall not be liable for any error of judgment, or
for any action taken, suffered or omitted by it, or for any mistake in fact or
law, or for anything that it may do or refrain from doing in connection
herewith; provided, however, that notwithstanding any other provision in this
Agreement, (a) the Escrow Agent shall be liable for its willful misconduct or
gross negligence or breach of this Agreement; and (b) in no event shall the
Escrow Agent be liable for special, punitive, indirect, consequential or
incidental loss or damage of any kind whatsoever (including, but not limited to,
lost profits), even if the Escrow Agent has been advised of the likelihood of
such loss or damage;

         (d) the Escrow Agent may seek the advice of legal counsel selected with
reasonable care in the event of any dispute or question as to the construction
of any of the provisions of this Agreement or its duties hereunder, and it shall
incur no liability and shall be fully protected in respect of any action taken,
omitted or suffered by it in good faith in accordance with the opinion of such
counsel;

         (e) in the event that the Escrow Agent shall in any instance, after
seeking the advice of legal counsel pursuant to the immediately preceding
clause, in good faith be uncertain as to its duties or rights hereunder, it
shall be entitled to refrain from taking any action in that instance and its
sole obligation, in addition to those of its duties hereunder as to which there
is no such uncertainty and which are not impacted by such uncertainty, shall be
to keep safely all property held in the Escrow Fund until it shall be directed

                                       4
<PAGE>   5
otherwise in writing by each of the parties hereto or by a final, nonappealable
order of a court of competent jurisdiction; provided, however, in the event that
the Escrow Agent has not received such written direction or court order within
180 calendar days after requesting the same, it shall have the right to
interplead Siemens and the Stockholders' Representative in any court of
competent jurisdiction and request that such court determine its rights and
duties hereunder;

         (f) the Escrow Agent may execute any of its powers or responsibilities
hereunder and exercise any rights hereunder either directly or by or through
agents or attorneys selected with reasonable care; and

         (g) nothing in this Agreement shall be deemed to impose upon the Escrow
Agent any duty to qualify to do business in any jurisdiction other than the
State of New York or to act as fiduciary or otherwise and the Escrow Agent shall
not be responsible for and shall not be under a duty to examine into or pass
upon the validity, binding effect, execution or sufficiency of this Agreement or
of any agreement amendatory or supplemental hereto.

7. Cooperation. Siemens and the Stockholders' Representative shall provide to
the Escrow Agent all instruments and documents within their respective powers to
provide that are necessary for the Escrow Agent to perform its duties and
responsibilities hereunder.

8. Fees and Expenses; Indemnity. The fees, costs and expenses of the Escrow
Agent for its services hereunder, including the preparation and delivery of all
Form 1099s and other documentation required to be delivered by the Internal
Revenue Service, shall be deducted by the Escrow Agent directly from the Escrow
Fund prior to any payments or releases pursuant to Section 5; provided that in
no event shall such fees exceed [$5,000] per year. Each of Siemens and the
Stockholders' Representative, on behalf of the holders of Company Common Stock,
shall reimburse and indemnify the Escrow Agent for, and hold it harmless
against, any loss, damages, judgment, fine, penalty, claim, demand, settlement,
cost or expense, including but not limited to reasonable attorneys' fees,
reasonably incurred by the Escrow Agent in connection with the Escrow Agent's
acceptance and administration of this Agreement and its performance of its
duties and obligations under this Agreement, as well as the reasonable costs and
expenses of defending against any claim or liability relating to this Agreement;
provided that notwithstanding the foregoing, neither Siemens nor the
Stockholders' Representative shall be required to indemnify the Escrow Agent for
any such loss, liability, cost or expense arising as a result of the Escrow
Agent's willful misconduct or gross negligence or breach of this Agreement and
provided, further that in no event shall the Stockholders' Representative, on
behalf of the holders of the Company Common Stock, be responsible to reimburse,
indemnify or hold the Escrow Agent harmless against any liabilities with respect
to income Taxes which, for purposes of this Agreement, are the sole
responsibility of Siemens as provided in Section 3(b).

9. Resignation and Removal of the Escrow Agent.

         (a) The Escrow Agent may resign as such 30 calendar days following the
giving of prior written notice thereof to Siemens and the Stockholders'
Representative. In addition, the Escrow Agent may be removed and replaced on a
date designated in a written instrument signed by Siemens and the Stockholders'
Representative and delivered to the Escrow Agent. Notwithstanding the foregoing,
no such resignation or removal shall be effective until a successor escrow agent
has acknowledged its appointment as such as provided in paragraph (c) below. In
either event, upon the effective date of such resignation or removal and upon
receipt by the Escrow Agent of any fees, costs and expenses owed or due to it,
if any, hereunder the Escrow Agent shall deliver the property comprising the
Escrow Fund to such successor escrow agent, together with such records
maintained by the Escrow Agent in connection with its duties hereunder and other
information with respect to the Escrow Fund as such successor may reasonably
request.


                                       5
<PAGE>   6
         (b) If a successor escrow agent shall not have acknowledged its
appointment as such as provided in paragraph (c) below, in the case of a
resignation, prior to the expiration of 30 calendar days following the date of a
notice of resignation or, in the case of a removal, on the date designated for
the Escrow Agent's removal, as the case may be, because Siemens and the
Stockholders' Representative are unable to agree on a successor escrow agent, or
for any other reason, the Escrow Agent may petition a court of competent
jurisdiction to select a successor and any such resulting appointment shall be
binding upon all of the parties to this Agreement.

         (c) Upon written acknowledgment by a successor escrow agent appointed
in accordance with the foregoing provisions of this Section 9 of its agreement
to serve as escrow agent hereunder and the receipt of the property then
comprising the Escrow Fund, the Escrow Agent shall be fully released and
relieved of all duties, responsibilities and obligations under this Agreement,
subject to the proviso contained in clause (iii) of Section 6, and such
successor escrow agent shall for all purposes hereof be the Escrow Agent.

10. Notices. All notices, requests and other communications hereunder must be in
writing and will be deemed to have been duly given if delivered personally or by
facsimile transmission (promptly followed by a hard-copy delivered in accordance
with this Section 10) or mailed (first class postage prepaid) to the parties at
the following addresses or facsimile numbers:

                             If to Siemens or the Company, to:

                             Siemens Corporation
                             153 East 53rd Street
                             New York, New York  10021
                             Facsimile No.:  (212) 258-4945
                             Attn:  Legal Department

                             If to the Stockholders' Representative, to:

                             Dort A. Cameron, III
                             The Airlie Group
                             115 East Putnam Avenue
                             Greewich, Connecticut 06830
                             Facsimile No.:  (203) 661-0479

                             If to the Escrow Agent, to:

                             ChaseMellon Shareholder Services, L.L.C.
                             85 Challenger Road
                             Ridgefield Park, New Jersey  07660
                             Facsimile No.:  (201) 329-8931
                             Attention:  Terence Kivlehan

All such notices, requests and other communications will (i) if delivered
personally to the address as provided in this Section, be deemed given upon
delivery, (ii) if delivered by facsimile transmission to the facsimile number as
provided in this Section, be deemed given upon receipt, and (iii) if delivered
by mail in the manner described above to the address as provided in this
Section, be deemed given upon receipt (in each case regardless of whether such
notice, request or other communication is received by any other Person to whom a
copy of such notice is to be delivered pursuant to this Section). Any party from
time to

                                       6
<PAGE>   7
time may change its address, facsimile number or other information for the
purpose of notices to that party by giving notice specifying such change to the
other parties hereto.

11. Certain Tax Matters. In accordance with Rev. Rul 73-451, 1973-2 C.B. 158,
Rev. Rul 77-294, 1977-2 C.B. 173 (as amplified by Rev. Rul 79-91, 1979-1 C.B.
179), and Private Letter Ruling 8629038 (April 18, 1986) as supplemented by
Private Letter Ruling 8640021 (July 1, 1986), Siemens and the Stockholders'
Representative agree that the establishment of this Escrow Fund amounts to a
substantial restriction on the selling stockholders' rights to receive a portion
of the purchase price under the Merger Agreement and neither party shall take an
inconsistent position on any Tax Return or for any other Tax purpose unless
required by applicable law.

12. Amendments, etc. This Agreement may be amended or modified, and any of the
terms hereof may be waived, only by a written instrument duly executed by or on
behalf of Siemens and the Stockholders' Representative and, with respect to any
amendment that would adversely affect the Escrow Agent, the Escrow Agent. No
waiver by any party of any term or condition contained of this Agreement, in any
one or more instances, shall be deemed to be or construed as a waiver of the
same or any other term or condition of this Agreement on any future occasion.

13. Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware applicable to a contract
executed and performed in such State, without giving effect to the conflicts of
laws principles thereof; provided, however, that all provisions regarding the
rights, duties and obligations of the Escrow Agent shall be governed by and
construed in accordance with the laws of the State of New York applicable to
contracts made and to be performed entirely within such State.

14. Business Day. For all purposes of this Agreement, the term "business day"
shall mean a day other than Saturday, Sunday or any day on which banks located
in the State of New York are authorized or obligated to close.

15. Miscellaneous. This Agreement is binding upon and will inure to the benefit
of the parties hereto and their respective successors and permitted assigns. The
headings used in this Agreement have been inserted for convenience of reference
only and do not define or limit the provisions hereof. This Agreement may be
executed in any number of counterparts, each of which will be deemed an
original, but all of which together will constitute one and the same instrument.

16. Dispute Resolution: Negotiation and Arbitration.

         (a) The parties hereto shall resolve any dispute arising out of or
relating to this Agreement pursuant to the procedures set forth in Section 7.7
of the Merger Agreement.

         (b) Resolution of disputes under this Section 16 pursuant to the
procedures set forth in Section 7.7 of the Merger Agreement shall be the sole
and exclusive means of resolving disputes arising out of or relating to this
Agreement; provided, however, that nothing herein shall preclude the parties
from seeking in any court of competent jurisdiction temporary or interim
injunctive relief to the extent necessary to preserve the subject matter of the
dispute pending resolution under this Section 16 pursuant to Section 7.7 of the
Merger Agreement.





                                       7
<PAGE>   8
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date first above written.



                              SIEMENS CORPORATION


                              By:
                                    --------------------------------------------
                                    Name:  Gerald Wright
                                    Title: Executive Vice President and
                                           Chief Financial Officer



                              By:
                                    --------------------------------------------
                                    Name:  Michael Schiefen
                                    Title: Vice President, Corporate Development



                              ENTEX INFORMATION SERVICES, INC.


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


                              By:
                                    --------------------------------------------
                                    Dort A. Cameron, III
                                    Stockholders' Representative


                              CHASEMELLON SHAREHOLDER
                              SERVICES, L.L.C.


                              By:
                                    --------------------------------------------
                                    Name:
                                    Title:
<PAGE>   9
                                                                         ANNEX I


                           CERTIFICATE OF INSTRUCTION


                                       to


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                                 as Escrow Agent

         The undersigned, Siemens Corporation, a Delaware corporation
("Siemens"), pursuant to Section 4(a) of the Escrow Agreement dated as of
_______, 2000 among Siemens, Entex Information Services, Inc., a Delaware
corporation, Dort A. Cameron, III (the "Stockholders' Representative") and you
(terms defined in the Escrow Agreement have the same meanings when used herein),
hereby:

         (a) certifies that (i) Siemens or another Indemnified Party has sent to
the Escrow Agent and the Stockholders' Representative a Claim Notice (as such
term is defined in the Merger Agreement), a copy of which is attached hereto,
and (ii) the amount of $___________ (the "Owed Amount") is payable to the
Indemnified Parties pursuant to Section 8 of the Merger Agreement by reason of
the matter described in such Claim Notice; and

         (b) instructs you to pay to Siemens from the Escrow Fund the Owed
Amount, by wire transfer of immediately available funds to Siemens' account at
_________________, __________________, _________, _________ (Account
No.:_________), unless you receive an Objection Certificate from the
Stockholders' Representative prior to the expiration of the Objection Period. If
you receive an Objection Certificate within the Objection Period, within two
business days following your receipt of a Resolution Certificate or an
Arbitration Certificate, you are to pay to Siemens the amount specified in such
Resolution Certificate or Arbitration Certificate.



                              SIEMENS CORPORATION


                              By:   ____________________________________________
                                    Name:
                                    Title:

Dated:  ____________, ____
<PAGE>   10
                                                                        ANNEX II


                              OBJECTION CERTIFICATE


                                       To


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                                 As Escrow Agent

         The undersigned, Dort A. Cameron, III (the "Stockholders'
Representative"), pursuant to Section 4(b) of the Escrow Agreement dated as of
________, 2000 among Siemens Corporation, a Delaware corporation ("Siemens"),
Entex Information Services, Inc., a Delaware corporation, the Stockholders'
Representative and you (terms defined in the Escrow Agreement have the same
meanings when used herein), hereby:

         (a) disputes that the Owed Amount referred to in the Certificate of
Instruction dated _________, ____ is payable to the Indemnified Parties pursuant
to Section 8 of the Merger Agreement;

         (b) certifies that the undersigned has sent to Siemens a written
statement dated ___________, ____ of the undersigned, a copy of which is
attached hereto, disputing its liability to the Indemnified Parties for the Owed
Amount; and

         (c) objects to your making payment to Siemens as provided in such
Certificate of Instruction.



                              By:   ____________________________________________
                                    Dort A. Cameron, III
                                    Stockholders' Representative

Dated: _____________, ____
<PAGE>   11
                                                                       ANNEX III


                             RESOLUTION CERTIFICATE


                                       to


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                                 as Escrow Agent

         The undersigned, Siemens Corporation, a Delaware corporation
("Siemens"), and Dort A. Cameron, III (the "Stockholders' Representative"),
pursuant to Section 4(b) of the Escrow Agreement dated as of ________, 2000
among Siemens, Entex Information Services, Inc., a Delaware corporation, the
Stockholders' Representative and you (terms defined in the Escrow Agreement have
the same meanings when used herein), hereby:

         (a) certify that (i) Siemens and the Stockholders' Representative have
resolved their dispute as to the matter described in the Certificate of
Instruction dated __________, ____ and the related Objection Certificate dated
___________, ____ and (ii) the final Owed Amount with respect to the matter
described in such Certificates is $______________;

         (b) instruct you to pay to Siemens from the Escrow Fund the final Owed
Amount referred to in clause (ii) of paragraph (a) above, by wire transfer of
immediately available funds to Siemens' account at ____________________,
_________________, ________, ________ (Account No.: ___________), within two
business days of your receipt of this Certificate; and

         (c) agree that the Owed Amount designated in such Certificate of
Instruction, to the extent, if any, it exceeds the Owed Amount referred to in
clause (ii) of paragraph (a) above, shall be deemed not payable to the
Indemnified Parties and such Certificate of Instruction is hereby cancelled.

                              SIEMENS CORPORATION


                              By:   ____________________________________________
                                    Name:
                                    Title:


                              By:   ____________________________________________
                                    Dort A. Cameron, III
                                    Stockholders' Representative

Dated: _____________, ____
<PAGE>   12
                                                                        ANNEX IV


                             ARBITRATION CERTIFICATE


                                       to


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                                 as Escrow Agent

         The undersigned, [Siemens Corporation, a Delaware corporation
("Siemens") or Dort A. Cameron, III (the "Stockholders' Representative")],
pursuant to Section 4(b) of the Escrow Agreement dated as of ________, 2000
among Siemens, Entex Information Services, Inc., a Delaware corporation, the
Stockholders' Representative and you (terms defined in the Escrow Agreement have
the same meanings when used herein), hereby:

         (a) certify that (i) attached hereto is a final order of the
arbitration panel appointed pursuant to Section 7.7 of the Merger Agreement
resolving the dispute between Siemens and the Stockholders' Representative as to
the matter described in the Certificate of Instruction dated ____________, ____
and the related Objection Certificate dated ____________, ____ and (ii) the
final Owed Amount with respect to the matter described in such Certificates, as
provided in such order, is $______________;

         (b) instruct you to pay to Siemens from the Escrow Fund the Owed Amount
referred to in clause (ii) of paragraph (a) above, by wire transfer of
immediately available funds to Siemens' account at _____________________,
________________, _______, _______ (Account No.: ____________), within two
business days of your receipt of this Certificate; and

         (c) agree that the Owed Amount designated in such Certificate of
Instruction, to the extent, if any, it exceeds the Owed Amount referred to in
clause (ii) of paragraph (a) above, shall be deemed not payable to the
Indemnified Parties and such Certificate of Instruction is hereby cancelled.


                              SIEMENS CORPORATION


                              By:   ____________________________________________
                                    Name:
                                    Title:


Dated:  ____________, ____          ____________________________________________
                                    Dort A. Cameron, III
                                    Stockholders' Representative
<PAGE>   13
                                                                         ANNEX V


                        SIEMENS CANCELLATION CERTIFICATE


                                       to


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                                 as Escrow Agent

         The undersigned, Siemens Corporation, a Delaware corporation
("Siemens"), pursuant to Section 4(e) of the Escrow Agreement dated as of
_______, 2000 among Siemens, Entex Information Services, Inc., a Delaware
corporation, Dort A. Cameron, III (the "Stockholders' Representative") and you
(terms defined in the Escrow Agreement have the same meanings when used herein),
hereby:

         (a) certifies that (i) it hereby releases its claim with respect to
[all] [specify portion] of the Owed Amount designated in the Certificate of
Instruction dated _____________, ____ and (ii) as a result, the Owed Amount with
respect to such Certificate of Instruction is $__________; and

         (b) agrees that such Certificate of Instruction is, to the extent of
the claim released as provided in clause (i) of paragraph (a) above, cancelled.


                              SIEMENS CORPORATION


                              By:   ____________________________________________
                                    Name:
                                    Title:

Dated:  ____________, ____
<PAGE>   14
                                                                        ANNEX VI


                     REPRESENTATIVE CANCELLATION CERTIFICATE


                                       to


                     CHASEMELLON SHAREHOLDER SERVICES, L.L.C


                                 as Escrow Agent

         The undersigned, Dort A. Cameron, III (the "Stockholders'
Representative") and Siemens Corporation, a Delaware corporation ("Siemens"),
pursuant to Section 4(f) of the Escrow Agreement dated as of ______, 2000 among
Siemens, Entex Information Services, Inc., a Delaware corporation, the
Stockholders' Representative and you (terms defined in the Escrow Agreement have
the same meanings when used herein), hereby certify that (i) attached hereto is
a final order of the AAA resolving the dispute between Siemens and the
Stockholders' Representative as to the matter described in the Certificate of
Instruction dated ____________, ____ and the related Objection Certificate dated
____________, ____ and (ii) as provided in such order, there is no Owed Amount
with respect to the matter described in such Certificates.



                              By:   ____________________________________________
                                    Dort A. Cameron, III
                                    Stockholders' Representative

                              SIEMENS CORPORATION


                              By:   ____________________________________________
                                    Name:
                                    Title:

Dated:  ____________, ____



<PAGE>   1
                                                                       EXHIBIT J


                              TAX ESCROW AGREEMENT

         TAX ESCROW AGREEMENT, dated as of ________, 2000, among Siemens
Corporation, a Delaware corporation ("Siemens"), Entex Information Services,
Inc., a Delaware corporation (the "Company"), ChaseMellon Shareholder Services,
L.L.C., a New Jersey limited liability company, as escrow agent (the "Tax Escrow
Agent"), and Dort A. Cameron, III (or such successor person selected as
Stockholders' Representative pursuant to the Merger Agreement (as defined below)
the "Stockholders' Representative").


                                    RECITALS

         A. This Agreement is being entered into pursuant to an Agreement and
Plan of Merger dated as of March 13, 2000 (the "Merger Agreement"; capitalized
terms not defined herein shall have the meanings ascribed to them in the Merger
Agreement) among Siemens, Emilia Acquisition Corp., a Delaware corporation
("Acquisition"), and the Company in order to provide for the deposit with the
Tax Escrow Agent of funds that will be held and disbursed, as hereinafter
provided and as provided in the Merger Agreement, to make payments to Siemens
and (to the extent of any remaining funds) to make payments to certain former
holders of Company Common Stock.

         B. For purposes of clarification, the funds deposited with the Tax
Escrow Agent pursuant to this Agreement are intended to provide Siemens with
indemnification from and protection against potential Losses resulting from the
outcome of the matters described in that certain revenue agent report (the
"RAR") that was submitted to the U.S. Congressional Joint Committee on Taxation
(the "Joint Committee") on January 5, 2000, a copy of which is attached hereto
as Exhibit A, and certain state and local tax matters related thereto
(collectively, the "Tax Matters"), following the audit of the Company with
respect to its fiscal 1994, 1995 and 1996 tax years (collectively, the "Audited
Tax Years"), conducted by the Internal Revenue Service (the "IRS").

         C. The parties have procured and paid for certain insurance policies,
copies of which are attached hereto as Exhibit B (collectively, the "Insurance
Policies"), to provide indemnification and protection against potential Losses
resulting from the Tax Matters in excess of, and in certain circumstances in
place of, the funds deposited hereunder, and intend to clarify their rights with
respect to participation in and control of all actions, proceedings and claims
relating to the Tax Matters.

         NOW, THEREFORE, the parties hereby agree as follows:

         1. Appointment of the Tax Escrow Agent; Deposit of Tax Escrow Amount.
Siemens, the Company and the Stockholders' Representative hereby constitute and
appoint the Tax Escrow Agent as, and the Tax Escrow Agent hereby agrees to
assume and perform the duties of, escrow agent under and pursuant to this
Agreement. The Tax Escrow Agent acknowledges receipt of an executed copy of the
Merger Agreement and copies of the RAR and the Insurance Policies. Pursuant to
the Merger Agreement, funds in the amount of _________________ ($__________)
(the "Tax Escrow Amount") have been or are to be deposited with the Tax Escrow
Agent by Siemens.

         2. The Tax Escrow Fund. The Tax Escrow Amount and all earnings thereon
(the Tax Escrow Amount and all such earnings being referred to herein together
as the "Tax Escrow Fund") shall be held by the Tax Escrow Agent as a trust fund
in a separate account maintained for the purpose, on the terms and subject to
the conditions of this Agreement. The Tax Escrow Fund shall not be subject to
lien or attachment by any creditor of any party hereto and shall be used solely
for the purpose set forth in this
<PAGE>   2
Agreement. Except as set forth in Section 8 hereof, amounts held in the Tax
Escrow Fund shall not be available to, and shall not be used by, the Tax Escrow
Agent to set off any obligations of Siemens, the Company, the Stockholders'
Representative or any former holder of Company Common Stock owing to the Tax
Escrow Agent in any capacity.

         3. Investment of the Tax Escrow Fund; Taxes.

         (a) Unless otherwise directed in writing by Siemens and the
Stockholders' Representative, the Tax Escrow Agent shall invest and reinvest all
cash funds held from time to time as part of the Tax Escrow Fund, in bonds or
other fixed-income securities, the interest on which is not subject to U.S.
federal income tax (including alternative minimum tax) or to New York City or
New York State income tax; or if such securities are not available for purchase,
in obligations of, or guaranteed by, the government of the United States of
America or any State thereof or the District of Columbia, or agencies of any of
the foregoing, having maturities of not greater than 90 days (or, if earlier,
the Termination Date (as hereinafter defined)); provided that such bonds or
other obligations are rated at least A by Moody's Investors Service, Inc.
("Moody's") and A by Standard & Poor's Corporation ("S&P").

         (b) It is not anticipated that Taxes will be payable in respect of
earnings on the Tax Escrow Fund; however, to the extent that such Taxes are
payable, they shall be the obligation of and shall be paid when due by Siemens
but Siemens shall be entitled to be reimbursed the amount of any and all such
Tax payments from the Tax Escrow Fund in accordance with Section 5(a). The Tax
Escrow Agent shall have no duty or obligation with respect to notifying any
party of any taxes due or monitoring the payment of any taxes. Siemens hereby
agrees to indemnify and hold harmless the Tax Escrow Agent from and against any
liability arising from such taxes, including any failure to pay such taxes.

         4. Claims Against the Tax Escrow Fund. On the Release Date (as
hereinafter defined), Siemens will deliver to the Tax Escrow Agent a certificate
in substantially the form of Annex I attached hereto (a "Resolution
Certificate"). The Tax Escrow Agent shall give written notice to the Company and
the Stockholders' Representative of its receipt of the Resolution Certificate
not later than the second business day next following receipt thereof, together
with a copy of such Resolution Certificate.

For purposes of this Agreement, the term "Release Date" shall mean the first to
occur of (i) the date the Company receives a refund of all or any portion of the
amounts claimed in the RAR; provided such refund has been approved by the Joint
Committee; (ii) the date the Company and the IRS reach a settlement or
compromise of all open issues between the Company and the IRS with respect to
the Audited Tax Years that is fully effective and requires no further
governmental authorization, whether or not such settlement or compromise closes
the applicable statute of limitations with respect to the Audited Tax Years, and
any agreed upon refunds are received by the Company and/or any agreed upon
assessments by the IRS, along with any assessments relating to Other Income Tax
(as defined in the Insurance Policies) resulting solely from the settlement or
compromise with the IRS have been paid; and (iii) the date that is 15 business
days after the final expiration of all limitation periods (as extended or
tolled) applicable under the Code with respect to the Audited Tax Years.

         5. Release of Tax Escrow Fund.

         (a) Earnings Tax Release. To the extent that Taxes in respect of
earnings on the Tax Escrow Fund become due and payable by Siemens prior to the
Termination Date (as hereinafter defined), Siemens shall notify the
Stockholders' Representative and the Tax Escrow Agent and upon receipt of such
written notice executed by Siemens and the Stockholders' Representative, the Tax
Escrow Agent shall pay over to Siemens from the Tax Escrow Fund, by wire
transfer of immediately available funds to a bank account of Siemens'
designation, a percentage of the taxable earnings sufficient to pay any
incremental income Taxes

                                       2
<PAGE>   3
imposed on Siemens as a result of such taxable earnings, as determined by
Siemens, subject to the consent of the Stockholders' Representative, which
consent shall not be unreasonably withheld.

         (b) Expense Release. To the extent that (i) Siemens incurs any costs or
expenses in connection with any action, proceeding or claim relating solely to
the Tax Matters, Siemens shall notify the Stockholders' Representative and the
Tax Escrow Agent and upon receipt of such written notice executed by Siemens,
the Tax Escrow Agent shall pay over to Siemens from the Tax Escrow Fund, by wire
transfer of immediately available funds to a bank account of Siemens'
designation, the amount set forth in such notice or (ii) the Stockholders'
Representative incurs any costs or expenses in connection with any action,
proceeding or claim relating solely to the Tax Matters that, together with all
other costs and expenses incurred by the Stockholders' Representative in his
capacity as such in connection with the transactions contemplated by the Merger
Agreement and the Escrow Agreement, exceed the Stockholders' Representative
Expense Amount actually paid to the Stockholders' Representative pursuant to the
Merger Agreement, the Stockholders' Representative shall notify Siemens and the
Tax Escrow Agent and upon receipt of such written notice executed by the
Stockholders' Representative, the Tax Escrow Agent shall pay over to the
Stockholders' Representative from the Tax Escrow Fund, by wire transfer of
immediately available funds to a bank account of the Stockholders'
Representative's designation, the amount set forth in such notice; provided,
however, that prior to the Release Date, no amounts shall be released from the
Tax Escrow Fund for the reimbursement of the costs or expenses of Siemens or the
Stockholders' Representative unless such costs and expenses are characterized as
Specified Losses (as such term is defined in the Insurance Policies).

         (c) Termination Date. The Tax Escrow Agent shall on the date that is no
later than five business days following its receipt of a Resolution Certificate
(the "Termination Date"), transfer from the Tax Escrow Fund to (i) Siemens, the
amount of the assessment by the IRS for Federal Specified Losses (as defined in
the Insurance Policies), together with any Other Income Tax assessments
resulting solely from a settlement or compromise with the IRS or other
Governmental Entity of the Tax Matters as set forth in the Resolution
Certificate and (ii) to a separate sub-account (the "Release Account") an amount
equal to (x) the remaining balance of the Tax Escrow Fund less (y) (A) the sum
of the amounts released or to be released pursuant to paragraphs (a) and (b)
above and (B) the fees and expenses of the Tax Escrow Agent to be deducted from
the Tax Escrow Fund as set forth in Section 8. Funds (if any) deposited and held
from time to time pursuant to this Agreement in the Release Account shall be
released (i) first, to the extent the sum of (x) the Stockholders'
Representative Expense Amount actually paid to the Stockholders' Representative
pursuant to the Merger Agreement and (y) amounts released to the Stockholders'
Representative pursuant to paragraph (b) above is less than $500,000, to the
Stockholders' Representative in an amount equal to the amount by which such
amount referred to in the immediately preceding classes (x) and (y) is less than
$500,000 and (ii) second, to the extent of all remaining funds, to the former
holders of Company Common Stock entitled thereto in accordance with the
provisions of the Merger Agreement, as instructed in writing by the
Stockholders' Representative. After all funds have been disbursed from the
Escrow Account and the Release Account, this Agreement (other than Sections 6, 7
and 8) shall automatically terminate.

6. Duties and Obligations of the Tax Escrow Agent. The duties and obligations of
the Tax Escrow Agent shall be limited to and determined solely by the provisions
of this Agreement and the certificates delivered in accordance herewith, and the
Tax Escrow Agent is not charged with knowledge of or any duties or
responsibilities in respect of any other agreement or document (including the
Merger Agreement, the RAR and the Insurance Policies). In furtherance and not in
limitation of the foregoing:

         (a) the Tax Escrow Agent shall not be liable for any loss of interest
or any penalty sustained or imposed as a result of investments, reinvestments,
sales or liquidations made hereunder in accordance with the terms hereof,
including any liquidation of any investment of the Tax Escrow Fund prior to its


                                       3
<PAGE>   4
maturity effected in order to make a payment (including any payment of taxes)
required by the terms of this Agreement;

         (b) the Tax Escrow Agent shall be fully protected and shall incur no
liability in relying in good faith upon any written certification, notice,
direction, request, waiver, consent, receipt or other document that the Tax
Escrow Agent reasonably believes to be genuine and duly authorized, executed and
delivered (including, but not limited to, any documentation from the arbitration
panel appointed pursuant to Section 7.7 of the Merger Agreement);

         (c) the Tax Escrow Agent shall not be liable for any error of judgment,
or for any action taken, suffered or omitted by it, or for any mistake in fact
or law, or for anything that it may do or refrain from doing in connection
herewith; provided, however, that notwithstanding any other provision in this
Agreement, (a) the Tax Escrow Agent shall be liable for its willful misconduct
or gross negligence or breach of this Agreement; and (b) in no event shall the
Tax Escrow Agent be liable for special, punitive, indirect, consequential or
incidental loss or damage of any kind whatsoever (including, but not limited to,
lost profits), even if the Tax Escrow Agent has been advised of the likelihood
of such loss or damage;

         (d) the Tax Escrow Agent may seek the advice of legal counsel selected
with reasonable care in the event of any dispute or question as to the
construction of any of the provisions of this Agreement or its duties hereunder,
and it shall incur no liability and shall be fully protected in respect of any
action taken, omitted or suffered by it in good faith in accordance with the
opinion of such counsel;

         (e) in the event that the Tax Escrow Agent shall in any instance, after
seeking the advice of legal counsel pursuant to the immediately preceding
clause, in good faith be uncertain as to its duties or rights hereunder, it
shall be entitled to refrain from taking any action in that instance and its
sole obligation, in addition to those of its duties hereunder as to which there
is no such uncertainty and which are not impacted by such uncertainty, shall be
to keep safely all property held in the Tax Escrow Fund until it shall be
directed otherwise in writing by each of the parties hereto or by a final,
nonappealable order of a court of competent jurisdiction; provided, however, in
the event that the Tax Escrow Agent has not received such written direction or
court order within 180 calendar days after requesting the same, it shall have
the right to interplead Siemens and the Stockholders' Representative in any
court of competent jurisdiction and request that such court determine its rights
and duties hereunder;

         (f) the Tax Escrow Agent may execute any of its powers or
responsibilities hereunder and exercise any rights hereunder either directly or
by or through agents or attorneys selected with reasonable care; and

         (g) nothing in this Agreement shall be deemed to impose upon the Tax
Escrow Agent any duty to qualify to do business in any jurisdiction other than
the State of New York or to act as fiduciary or otherwise and the Tax Escrow
Agent shall not be responsible for and shall not be under a duty to examine into
or pass upon the validity, binding effect, execution or sufficiency of this
Agreement or of any agreement amendatory or supplemental hereto.

7. Cooperation. Siemens and the Stockholders' Representative shall provide to
the Tax Escrow Agent all instruments and documents within their respective
powers to provide that are necessary for the Tax Escrow Agent to perform its
duties and responsibilities hereunder.

8. Fees and Expenses; Indemnity. The fees, costs and expenses of the Tax Escrow
Agent for its services hereunder, including the preparation and delivery of all
Form 1099s and other documentation required to be delivered by the IRS, shall be
deducted by the Tax Escrow Agent directly from the Tax Escrow Fund prior to any
payments or releases pursuant to Section 5; provided that in no event shall such
fees exceed [$5,000] per year. Each of Siemens and the Stockholders'
Representative, on behalf of the

                                       4
<PAGE>   5
holders of Company Common Stock, shall reimburse and indemnify the Tax Escrow
Agent for, and hold it harmless against, any loss, damages, judgment, fine,
penalty, claim, demand, settlement, cost or expense, including but not limited
to reasonable attorneys' fees, reasonably incurred by the Tax Escrow Agent in
connection with the Tax Escrow Agent's acceptance and administration of this
Agreement and its performance of its duties and obligations under this
Agreement, as well as the reasonable costs and expenses of defending against any
claim or liability relating to this Agreement; provided that notwithstanding the
foregoing, neither Siemens nor the Stockholders' Representative shall be
required to indemnify the Tax Escrow Agent for any such loss, liability, cost or
expense arising as a result of the Tax Escrow Agent's willful misconduct or
gross negligence or breach of this Agreement and provided, further that in no
event shall the Stockholders' Representative, on behalf of the holders of the
Company Common Stock, be responsible to reimburse, indemnify or hold the Tax
Escrow Agent harmless against any liabilities with respect to income Taxes
which, for purposes of this Agreement, are the sole responsibility of Siemens as
provided in Section 3(b).

9. Proceeding Relating to Tax Matters. Notwithstanding anything to the contrary
contained in the Merger Agreement, Siemens and the Stockholders' Representative
hereby agree that the following shall apply with respect to all actions,
proceedings and other claims relating solely to (or in the case of actions,
proceedings and other claims not relating solely to but including Tax Matters,
that portion of the action, proceeding or claim relating solely to) the Tax
Matters:

         (a) Until such time as the dollar amount of any dispute or claim with
the IRS and any other Governmental Entity with respect to the Tax Matters is
greater than the amounts then available in the Tax Escrow Fund (such amount
being the "Indemnity Cushion"), the Stockholders' Representative shall have the
right to conduct and control, through counsel of its own choosing, reasonably
acceptable to Siemens, any action, proceeding or other claim relating solely to
(or in the case of actions, proceedings and other claims not relating solely to
but including Tax Matters, that portion of the action, proceeding or claim
relating solely to) the Tax Matters, but Siemens may, at its election,
participate in any such action, proceeding or claim at its sole cost and
expense; provided, however, that if the Stockholders' Representative shall fail
to promptly assume and thereafter diligently prosecute any such action,
proceeding or claim, then Siemens may assume, through counsel of its own
choosing, the control and conduct of such action, proceeding or claim, subject
to the right of the Stockholders' Representative to participate therein as
provided in Section 9(b). If the Stockholders' Representative has control of the
action, proceeding or claim on the date of proposed settlement, the
Stockholders' Representative may settle any action, proceeding or claim, the
control and conduct of which it is entitled to hereunder, but only with the
written consent of Siemens, such consent not to be unreasonably withheld or
delayed.

         (b) Subject to the limitations and procedures contained in the
Insurance Policies, from and after the first time the dollar amount of any
dispute or claim with the IRS and any other Governmental Entity with respect to
the Tax Matters is greater than the Indemnity Cushion, Siemens shall have the
right to assume control and conduct, through counsel of its own choosing,
reasonably acceptable to the Stockholders' Representative, of all pending
actions, proceedings or other claims with respect to the Tax Matters (including
actions, proceedings and claims whose defense hitherto has been controlled by
the Stockholders' Representative) and thereafter to conduct and control, through
counsel of its own choosing, reasonably acceptable to the Stockholders'
Representative, any and all actions, proceedings and claims relating to the Tax
Matters that may thereafter arise; provided, that the Stockholders'
Representative may, at its election, continue to participate or participate, as
the case may be, in any such action, proceedings or claim, at its sole cost and
expense. Subject to the limitations and procedures contained in the Insurance
Policies, Siemens may settle or otherwise compromise any action, proceeding or
claim which they are entitled to control hereunder, but only with the prior
written consent of the Stockholders' Representative, such consent not to be
unreasonably withheld or delayed.



                                       5
<PAGE>   6
For purposes of clarification, Siemens and the Stockholders' Representative
agree that in all actions, proceedings and claims not related solely to (and, in
the case of actions, proceedings and other claims not relating solely to, but
including Tax Matters, that portion of the action, proceeding or claim not
relating solely to) the Tax Matters, the provisions of Section 7.6 of the Merger
Agreement shall apply.

10.      Resignation and Removal of the Tax Escrow Agent.

         (a) The Tax Escrow Agent may resign as such 30 calendar days following
the giving of prior written notice thereof to Siemens and the Stockholders'
Representative. In addition, the Tax Escrow Agent may be removed and replaced on
a date designated in a written instrument signed by Siemens and the
Stockholders' Representative and delivered to the Tax Escrow Agent.
Notwithstanding the foregoing, no such resignation or removal shall be effective
until a successor escrow agent has acknowledged its appointment as such as
provided in paragraph (c) below. In either event, upon the effective date of
such resignation or removal and upon receipt by the Tax Escrow Agent of any
fees, costs and expenses owed or due to it, if any, hereunder the Tax Escrow
Agent shall deliver the property comprising the Tax Escrow Fund to such
successor escrow agent, together with such records maintained by the Tax Escrow
Agent in connection with its duties hereunder and other information with respect
to the Tax Escrow Fund as such successor may reasonably request.

         (b) If a successor escrow agent shall not have acknowledged its
appointment as such as provided in paragraph (c) below, in the case of a
resignation, prior to the expiration of 30 calendar days following the date of a
notice of resignation or, in the case of a removal, on the date designated for
the Tax Escrow Agent's removal, as the case may be, because Siemens and the
Stockholders' Representative are unable to agree on a successor escrow agent, or
for any other reason, the Tax Escrow Agent may petition a court of competent
jurisdiction to select a successor and any such resulting appointment shall be
binding upon all of the parties to this Agreement.

         (c) Upon written acknowledgment by a successor escrow agent appointed
in accordance with the foregoing provisions of this Section 10 of its agreement
to serve as escrow agent hereunder and the receipt of the property then
comprising the Tax Escrow Fund, the Tax Escrow Agent shall be fully released and
relieved of all duties, responsibilities and obligations under this Agreement,
subject to the proviso contained in clause (iii) of Section 6, and such
successor escrow agent shall for all purposes hereof be the Tax Escrow Agent.

11. Notices. All notices, requests and other communications hereunder must be in
writing and will be deemed to have been duly given if delivered personally or by
facsimile transmission (promptly followed by a hard-copy delivered in accordance
with this Section 11) or mailed (first class postage prepaid) to the parties at
the following addresses or facsimile numbers:

                             If to Siemens or the Company, to:

                             Siemens Corporation
                             153 East 53rd Street
                             New York, New York  10021
                             Facsimile No.:  (212) 258-4945
                             Attn:  Legal Department

                             If to the Stockholders' Representative, to:

                             Dort A. Cameron, III


                                       6
<PAGE>   7
                             The Airlie Group
                             115 East Putnam Avenue
                             Greenwich, Connecticut  06830
                             Facsimile No.:  (203) 661-0479

                             If to the Tax Escrow Agent, to:

                             ChaseMellon Shareholder Services, L.L.C.
                             85 Challenger Road
                             Ridgefield Park, New Jersey  07660
                             Facsimile No.:  (201) 329-8931
                             Attention:  Terence Kivlehan

All such notices, requests and other communications will (i) if delivered
personally to the address as provided in this Section, be deemed given upon
delivery, (ii) if delivered by facsimile transmission to the facsimile number as
provided in this Section, be deemed given upon receipt, and (iii) if delivered
by mail in the manner described above to the address as provided in this
Section, be deemed given upon receipt (in each case regardless of whether such
notice, request or other communication is received by any other Person to whom a
copy of such notice is to be delivered pursuant to this Section). Any party from
time to time may change its address, facsimile number or other information for
the purpose of notices to that party by giving notice specifying such change to
the other parties hereto.

12. Certain Tax Matters. In accordance with Rev. Rul 73-451, 1973-2 C.B. 158,
Rev. Rul 77-294, 1977-2 C.B. 173 (as amplified by Rev. Rul 79-91, 1979-1 C.B.
179), and Private Letter Ruling 8629038 (April 18, 1986) as supplemented by
Private Letter Ruling 8640021 (July 1, 1986), Siemens and the Stockholders'
Representative agree that the establishment of this Tax Escrow Fund amounts to a
substantial restriction on the selling stockholders' rights to receive a portion
of the purchase price under the Merger Agreement and neither party shall take an
inconsistent position on any Tax Return or for any other Tax purpose unless
required by applicable law.

13. Amendments, etc. This Agreement may be amended or modified, and any of the
terms hereof may be waived, only by a written instrument duly executed by or on
behalf of Siemens and the Stockholders' Representative and, with respect to any
amendment that would adversely affect the Tax Escrow Agent, the Tax Escrow
Agent. No waiver by any party of any term or condition contained of this
Agreement, in any one or more instances, shall be deemed to be or construed as a
waiver of the same or any other term or condition of this Agreement on any
future occasion.

14. Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware applicable to a contract
executed and performed in such State, without giving effect to the conflicts of
laws principles thereof; provided, however, that all provisions regarding the
rights, duties and obligations of the Tax Escrow Agent shall be governed by and
construed in accordance with the laws of the State of New York applicable to
contracts made and to be performed entirely within such State.

15. Business Day. For all purposes of this Agreement, the term "business day"
shall mean a day other than Saturday, Sunday or any day on which banks located
in the State of New York are authorized or obligated to close.

16. Miscellaneous. This Agreement is binding upon and will inure to the benefit
of the parties hereto and their respective successors and permitted assigns. The
headings used in this Agreement have been inserted for convenience of reference
only and do not define or limit the provisions hereof. This Agreement

                                       7
<PAGE>   8
may be executed in any number of counterparts, each of which will be deemed an
original, but all of which together will constitute one and the same instrument.

17. Dispute Resolution: Negotiation and Arbitration.

         (a) The parties hereto shall resolve any dispute arising out of or
relating to this Agreement pursuant to the procedures set forth in Section 7.7
of the Merger Agreement.

         (b) Resolution of disputes under this Section 17 pursuant to the
procedures set forth in Section 7.7 of the Merger Agreement shall be the sole
and exclusive means of resolving disputes arising out of or relating to this
Agreement; provided, however, that nothing herein shall preclude the parties
from seeking in any court of competent jurisdiction temporary or interim
injunctive relief to the extent necessary to preserve the subject matter of the
dispute pending resolution under this Section 17 pursuant to Section 7.7 of the
Merger Agreement.



                                       8
<PAGE>   9
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date first above written.



                              SIEMENS CORPORATION


                              By:
                                    --------------------------------------------
                                    Name:  Gerald Wright
                                    Title: Executive Vice President and
                                           Chief Financial Officer




                              By:
                                    --------------------------------------------
                                    Name:  Michael Schiefen
                                    Title: Vice President, Corporate Development


                              ENTEX INFORMATION SERVICES, INC.


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


                              By:
                                    --------------------------------------------
                                    Dort A. Cameron, III
                                    Stockholders' Representative


                              CHASEMELLON SHAREHOLDER
                              SERVICES, L.L.C.


                              By:
                                    --------------------------------------------
                                    Name:
                                    Title:
<PAGE>   10
                                                                         ANNEX I


                             RESOLUTION CERTIFICATE


                                       to


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                               as Tax Escrow Agent

         The undersigned, Siemens Corporation, a Delaware corporation
("Siemens") and Dort A. Cameron, III (the "Stockholders' Representative"),
pursuant to Section 4(a) of the Escrow Agreement dated as of _______, 2000 among
Siemens, Entex Information Services, Inc., a Delaware corporation, the
Stockholders' Representative and you (terms defined in the Escrow Agreement have
the same meanings when used herein), hereby:

         (a) certifies that (i) [the amount of $___________ is payable to
Siemens] [no amount is owed to Siemens] pursuant to Section 4(a) of the Escrow
Agreement by reason of the resolution of the Tax Matters and (ii) [the amount of
$________ is to be released to the Release Account and is to be released to the
former holders of Company Common Stock as set forth in Section 5(c) of the
Escrow Agreement] [ no amount is to be released to the Release Account] [; and

         (b) instructs you to pay to Siemens from the Tax Escrow Fund the amount
specified above, by wire transfer of immediately available funds to Siemens'
account at _________________, __________________, _________, _________ (Account
No.:_________).]



                              SIEMENS CORPORATION


                              By:   ____________________________________________
                                    Name:
                                    Title:

Dated:  ____________, ____
<PAGE>   11
                                                                       EXHIBIT A



                              REVENUE AGENT REPORT
<PAGE>   12
                                                                       EXHIBIT B



                               INSURANCE POLICIES



<PAGE>   1
                                                                  EXECUTION COPY



                             STOCKHOLDERS AGREEMENT

         STOCKHOLDERS AGREEMENT (this "Agreement"), dated as of March 13, 2000,
by and among SIEMENS CORPORATION, a Delaware corporation ("Siemens"), EMILIA
ACQUISITION CORP., a Delaware corporation ("Acquisition") and a wholly owned
subsidiary of Siemens, and the Persons listed on the signature pages hereto
(each in such Person's individual capacity, a "Stockholder", and collectively,
the "Stockholders").

                                    RECITALS

         A. Each of the Stockholders is, as of the date hereof, the record and
beneficial owner of the number of shares of capital stock, of Entex Information
Services, Inc., a Delaware corporation (the "Company"), set forth on Annex I
hereto.

         B. Siemens, Acquisition and the Company concurrently herewith are
entering into an Agreement and Plan of Merger, dated as of the date hereof (the
"Merger Agreement"; capitalized terms used but not defined in this Agreement
have the same meanings ascribed to those terms in the Merger Agreement), which
provides, among other things, for the merger (the "Merger") of Acquisition with
and into the Company upon the terms and subject to the conditions set forth in
the Merger Agreement.

         C. As a condition to the willingness of Siemens and Acquisition to
enter into the Merger Agreement, and in order to induce Siemens and Acquisition
to enter into the Merger Agreement, the Stockholders have agreed to enter into
this Agreement.

         NOW, THEREFORE, in consideration of the execution and delivery by
Siemens and Acquisition of the Merger Agreement and the foregoing and the mutual
representations, warranties, covenants and agreements set forth herein and
therein, and other good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, the parties hereto agree as follows:

         1. Representations and Warranties of the Stockholders. Each of the
Stockholders hereby represents and warrants to Siemens and Acquisition,
severally and not jointly, as follows:

                  (a) Such Stockholder is the record and beneficial owner of the
shares of capital stock of the Company (as may be adjusted from time to time
pursuant to Section 7 hereof, the "Shares") set forth opposite the Stockholder's
name on Annex I to this Agreement.

                  (b) Such Stockholder has the legal capacity to execute and
deliver this Agreement and to consummate the transactions contemplated hereby.

                  (c) This Agreement has been duly authorized by all requisite
action (corporate, partnership or other) on the part of such Stockholder, has
been validly executed and delivered by such Stockholder and constitutes the
legal, valid and binding obligation of such Stockholder, enforceable against
such Stockholder in accordance with its terms, except as limited by bankruptcy,
insolvency, reorganization, moratorium or other laws affecting enforcement of
creditors' rights generally and by general equitable principles (regardless of
whether such enforceability is considered in a proceeding in equity or at law).

                  (d) The execution and delivery of this Agreement by such
Stockholder do not, and the performance by such Stockholder of the Stockholder's
obligations under this Agreement will not,
<PAGE>   2
(i) conflict with, result in a violation or breach of, constitute (with or
without notice or lapse of time or both) a default under, result in or give to
any person any right of termination, cancellation, modification or acceleration
of, or result in the creation or imposition of any Lien upon any of the assets
or properties of such Stockholder under, any of the terms, conditions or
provisions of (A) the certificate or article of incorporation or bylaws or other
comparable organizational documents of the Stockholder if applicable or (B) (x)
any law or order of any governmental or regulatory authority applicable to such
Stockholder or any of the Stockholder's assets or properties, or (y) any
contract to which the Stockholder is a party or by which the Stockholder or any
of the Stockholder's assets or properties is bound, excluding from the foregoing
clauses (x) and (y) conflicts, violations, breaches, defaults, terminations,
modifications, accelerations and creations and impositions of Liens which,
individually or in the aggregate, could not reasonably be expected to have a
material adverse effect on the ability of the Stockholder to consummate the
transactions contemplated by this Agreement, or (ii) require any filing by the
Stockholder with, or any permit, authorization, consent or approval of, any
governmental or regulatory authority or any third party.

                  (e) The Shares and the certificates representing the Shares
owned by such Stockholder are now and at all times during the term hereof will
be held by such Stockholder, or by a nominee or custodian for the benefit of
such Stockholder, free and clear of all liens, claims, security interests,
proxies, voting trusts or agreements, understandings or arrangements or any
other encumbrances whatsoever, except for any such encumbrances or proxies
arising hereunder, and not subject to any preemptive rights.

         2. Representations and Warranties of Siemens and Acquisition. Each of
Siemens and Acquisition hereby represents and warrants to the Stockholders as
follows:

                  (a) Each of Siemens and Acquisition is a corporation duly
organized, validly existing and in good standing under the laws of the State of
Delaware, and each of them has full corporate power and authority to enter into
this Agreement and to consummate the transactions contemplated hereby and has
taken all necessary corporate action to authorize the execution, delivery and
performance of this Agreement.

                  (b) This Agreement has been duly authorized, executed and
delivered by each of Siemens and Acquisition and constitutes the legal, valid
and binding obligation of each of Siemens and Acquisition, enforceable against
each of them in accordance with its terms, except as limited by bankruptcy,
insolvency, reorganization, moratorium or other similar laws affecting
enforcement of creditors' rights generally and by general equitable principles
(regardless of whether such enforceability is considered in a proceeding in
equity or at law).

                  (c) The execution and delivery of this Agreement by Siemens
and Acquisition do not, and the performance by Siemens and Acquisition of their
obligations hereunder and the consummation of the transactions contemplated
hereby will not, (i) conflict with, result in a violation or breach of,
constitute (with or without notice or lapse of time or both) a default under,
result in or give to any person any right of termination, cancellation,
modification or acceleration of, or result in the creation or imposition of any
Lien upon any of the assets or properties of Siemens or Acquisition under, any
of the terms, conditions or provisions of (A) the certificates or articles of
incorporation or bylaws of Siemens or Acquisition or (B) (x) any law or order of
any governmental or regulatory authority applicable to Siemens or Acquisition or
any of their respective assets or properties, or (y) any contract to which
Siemens or Acquisition is a party or by which Siemens or Acquisition or any of
their respective assets or properties is bound, excluding from the foregoing
clauses (x) and (y) conflicts, violations, breaches, defaults, terminations,
modifications, accelerations and creations and impositions of Liens which,
individually or in the aggregate, could not be reasonably expected to have a
material adverse effect on the ability of Siemens or Acquisition to consummate
the transactions contemplated by this Agreement, or (ii) require

                                       2
<PAGE>   3
any filing by Siemens or Acquisition with, or any permit, authorization, consent
or approval of, any governmental or regulatory authority.

         3. Grant of Options.

                  (a) Each Stockholder hereby irrevocably grants to Acquisition
an exclusive option (the "Call Option") to purchase all Shares of such
Stockholder at the Merger Price per Share specified in Section 2.1(c) of the
Merger Agreement (the "Option Price"), which Option shall be exercisable by
Acquisition at any time after the date hereof and prior to the termination of
this Agreement.

                  (b) If (i) the Information Statement has been filed with the
SEC in preliminary form in accordance with Section 5.4 of the Merger Agreement;
(ii) a period of twelve days has elapsed following such filing; (iii) the
Company has been advised by the staff of the SEC that it is in the process of
reviewing the Information Statement and notwithstanding the Company's reasonable
efforts that review has not been completed; and (iv) all of the conditions
described in Section 6.1 of the Merger Agreement (other than Section 6.1(e))
have been satisfied, then the Stockholders shall have the option (the "Put
Option", and together with the Call Option, the "Options") to require
Acquisition to purchase from the Stockholders all, but not less than all, of the
Shares of each Stockholder at the Option Price. The Put Option may be exercised
by the Stockholders at any time beginning on the date on which the conditions
specified in clauses (i) through (iv) of the preceding sentence are satisfied
until this Agreement is terminated.

                  (c) To exercise an Option, the exercising party shall send a
written notice ("Exercise Notice") to each other party specifying the place and
the time (which shall be not less than two business days and not more than four
business days after the date of the Exercise Notice) for the closing of the
purchase and sale of the Shares in accordance with the exercise of the Option.
The closing of the purchase and sale of the Shares (the "Option Closing")
pursuant to the exercise of the Option shall take place at the place and at the
time designated by the exercising party in the Exercise Notice. The obligation
of Siemens or its designee to purchase the Shares at the Option Closing shall be
subject to the conditions that (i) all of the conditions described in Section
6.1 of the Merger Agreement (other than Section 6.1(e)) shall have been
satisfied and (ii) proper arrangements shall have been made to give effect to
the provisions of Section 1.6 of the Merger Agreement, and the securities law
requirements described in Section 1.6(b) shall have been satisfied.

                  (d) At the Option Closing, each Stockholder shall sell,
assign, convey and transfer to Acquisition, each such Stockholder's Shares, free
and clear of any and all liens, claims, security interests, encumbrances,
options or adverse claims whatsoever, and each Stockholder shall deliver or
cause to be delivered to Acquisition a certificate or certificates representing
the number of Shares to be delivered by such Stockholder at the Option Closing,
duly endorsed, or accompanied by stock powers duly executed in blank, with all
required transfer tax stamps affixed thereto. Siemens shall procure that the
applicable portions of the Option Price are paid not later than the dates the
corresponding portions of the Merger Price per Share first are payable under the
Merger Agreement. Payment of each amount will be by wire transfer or certified
or bank cashier's check or checks.

                  (e) In the event of any change in the Company's capital stock
by reason of any stock dividend, stock split, merger, consolidation,
recapitalization, combination, conversion, exchange of shares or dividend or
other change in the corporate or capital structure of the Company, which would
have the effect of diluting or changing Acquisition's rights hereunder, the
number and kind of shares or securities subject to the Options and the Option
Price shall be appropriately and equitably adjusted so that (i) Acquisition
shall receive, at the Option Closing, the number and class of shares or other
securities or property that Acquisition would have received and (ii) the
Stockholders shall receive, at the Option

                                       3
<PAGE>   4
Closing, the consideration they would have received in respect of the Shares
purchasable upon exercise of the Options if the Options had been exercised
immediately prior to such event.

         4. Voting. Each of the Stockholders hereby agrees that such
Stockholder: (i) will vote all Shares owned by the Stockholder in favor of the
Merger and the Merger Agreement, at any meeting of the Company's stockholders,
or, if requested by Siemens or Acquisition, execute and deliver written consents
to the same effect; (ii) will provide all notices and perform all actions
necessary for the consummation of the transactions contemplated by the Merger
Agreement; and (iii) will vote against, and will not vote or grant any consent
in favor of, or that would facilitate, any Acquisition Transaction other than
the Merger and the other transactions contemplated by the Merger Agreement.

         5. Transfer of the Shares. Prior to the termination of this Agreement,
except as otherwise provided in this Agreement, none of the Stockholders shall:
(i) transfer (which term shall include, without limitation, for the purposes of
this Agreement, any sale, gift, pledge or other disposition), or consent to any
transfer of, any or all of the Shares; (ii) enter into any contract, option or
other agreement or understanding with respect to any transfer of any or all of
the Shares or any interest therein; (iii) grant any proxy, power-of-attorney or
other authorization or consent in or with respect to the Shares; (iv) deposit
the Shares into a voting trust or enter into a voting agreement or arrangement
with respect to the Shares; or (v) take any other action that would in any way
restrict, limit or interfere with the performance of such Stockholder's
obligations hereunder or the transactions contemplated hereby. Acquisition
hereby agrees not to transfer any Shares purchased upon exercise of an Option
until this Agreement has terminated.

         6. Grant of Irrevocable Proxy; Appointment of Proxy.

                  (a) Each of the Stockholders hereby irrevocably grants to, and
appoints, Siemens and any nominee thereof, its proxy and attorney-in-fact (with
full power of substitution), for and in the name, place, and stead of such
Stockholder, to vote such Stockholder's Shares, or grant a consent, waiver or
approval in respect of such Stockholder's Shares, in connection with any meeting
of the Stockholders of the Company or otherwise, (i) in favor of the Merger and
the other transactions and actions contemplated by the Merger Agreement, and
(ii) against any action or agreement which would impede, interfere with or
prevent the Merger, including any Acquisition Transaction other than the Merger.

                  (b) Each of the Stockholders represents that any proxies
heretofore given in respect of the Shares are not irrevocable, and that such
proxies are hereby revoked.

                  (c) Each of the Stockholders hereby affirms that the proxy set
forth in this Section 6 is irrevocable and is given in connection with the
execution of the Merger Agreement, and that such irrevocable proxy is given to
secure the performances of the duties of such Stockholder under this Agreement.
Each Stockholder hereby further affirms that the irrevocable proxy granted
hereby is coupled with an interest in the Shares and, except as set forth in
Section 11 of this Agreement, is intended to be irrevocable in accordance with
the provisions of Section 212(e) of the Delaware General Corporation Law.

         7. Certain Events. In the event of any stock split, stock dividend,
merger, reorganization, recapitalization or other change in the capital
structure of the Company affecting the Shares or the acquisition of additional
shares of capital stock or other securities or rights of the Company by any
Stockholder, the number of Shares shall be adjusted appropriately, and this
Agreement and the rights and obligations hereunder shall attach to any
additional shares of Company Common Stock or other securities or rights of the
Company issued to or acquired by any such Stockholder.


                                       4
<PAGE>   5
                  (a) Drag-Along Notices. To the extent applicable to such
Stockholder, each Stockholder hereby agrees that such Stockholder (i) shall
deliver all notices required to be delivered by that certain Stockholders
Agreement, dated December 10, 1993, between Dort A. Cameron, III, Entex
Associates, L.P. and other signatories thereto, in order to exercise the
drag-along rights granted under that agreement to require the stockholders of
the Company party thereto to sell their shares to Acquisition at the Option
Price per share and (ii) thereafter shall use its reasonable best efforts to
enforce (and shall not grant or enter into any waiver or modification with
respect to) such drag-along rights; provided, however, that no Stockholder shall
be required to incur any material expense or liability or commence any legal
proceeding.

         8. Certain Other Agreements. From the date of this Agreement until the
earlier of (i) the termination of this Agreement, or (ii) the Measurement Date,
none of the Stockholders shall, and none of the Stockholders shall authorize or
permit any advisor or representative retained by or acting for or on behalf of
any such Stockholder to, directly or indirectly, (i) take any action to
knowingly solicit, initiate, continue, facilitate or encourage (including by way
of furnishing or disclosing non-public information) any offer or proposal for an
Acquisition Transaction, other than the transactions contemplated by the Merger
Agreement or by this Agreement or (ii) knowingly engage in negotiations,
discussions or communications regarding or disclose any information relating to
the Company or afford access to the properties, books or records of the Company
to any person, corporation, partnership or other entity or group that may be
considering making or has made, a proposal for an Acquisition Transaction.

         9. Further Assurances. Each of the Stockholders shall, upon request of
Siemens or Acquisition, execute and deliver any additional documents and take
such further actions as may reasonably be deemed by Siemens or Acquisition to be
necessary or desirable to carry out the provisions hereof and to vest in Siemens
the power to vote, grant consents and grant waivers with respect to the Shares
as contemplated by Section 6 of this Agreement.

         10. Termination. Except as otherwise provided in this Agreement, this
Agreement, and all rights and obligations of the parties hereunder, shall
terminate immediately upon the earlier of (i) the acquisition by Siemens,
through Acquisition or otherwise, of all the Shares; (ii) if the Options have
not been exercised, the termination of the Merger Agreement in accordance with
its terms; or (iii) the Effective Time; provided, however, that Section 9 shall
survive any termination of this Agreement pursuant to clause (i) of this
sentence.

         11. Public Announcements. Each of the Stockholders, Siemens and
Acquisition agrees that it will not issue any press release or otherwise make
any public statement with respect to this Agreement or the transactions
contemplated hereby without the prior consent of the other parties, which
consents shall not be unreasonably withheld or delayed; provided, however, that
such disclosure can be made without obtaining such prior consent if (i) the
disclosure is required by law, and (ii) the party making such disclosure has
first used its best efforts to consult with the other party about the form and
substance of such disclosure.

         12. Miscellaneous.

                  (a) All notices, requests and other communications hereunder
must be in writing and will be deemed to have been duly given only if delivered
personally or by facsimile transmission or mailed (first class postage prepaid)
to the parties at the following addresses or facsimile numbers:


                                       5
<PAGE>   6
                           (1)      if to any or all of the Stockholders, to
                                    them in care of:

                                    Dort A. Cameron, III
                                    The Airlie Group
                                    115 East Putnam Avenue
                                    Greenwich, Connecticut 06830
                                    Facsimile: (203) 661-0479




                  with a copy to:

                                    Cahill Gordon & Reindel
                                    80 Pine Street
                                    New York, New York 10005
                                    Facsimile (212) 269-5420
                                    Attention:  Gerald S. Tanenbaum


                  and

                           (2)      if to Siemens or Acquisition, to:

                                    Siemens Corporation
                                    153 East 53rd Street
                                    New York, New York 10022
                                    Facsimile:  (212) 258-4945
                                    Attention:  General Counsel

                  with a copy to:

                                    Clifford Chance Rogers & Wells LLP
                                    200 Park Avenue
                                    New York, New York 10166
                                    Facsimile:  (212) 878-8375
                                    Attention:  John A. Healy

                           (3)      if to the Company, to:

                                    Entex Information Services, Inc.
                                    Six International Drive
                                    Rye Brook, New York 10573
                                    Facsimile: (914) 935-3880
                                    Attention:  Lynne A. Burgess

                  with a copy to:

                                    Cahill Gordon & Reindel
                                    80 Pine Street
                                    New York, New York 10005
                                    Facsimile (212) 269-5420
                                    Attention:  Gerald S. Tanenbaum


                                       6
<PAGE>   7
All such notices, requests and other communications will (i) if delivered
personally to the address as provided in this Section, be deemed given upon
delivery, (ii) if delivered by facsimile transmission to the facsimile number as
provided in this Section, be deemed given upon receipt, and (iii) if delivered
by mail in the manner described above to the address as provided in this
Section, be deemed given upon receipt (in each case regardless of whether such
notice, request or other communication is received by any other person to whom a
copy of such notice is to be delivered pursuant to this Section). Any party from
time to time may change its address, facsimile number or other information for
the purpose of notices to that party by giving notice specifying such change to
the other parties hereto.

                  (b) 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.

                  (c) This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which shall
be considered one and the same agreement.

                  (d) This Agreement constitutes the entire agreement, and
supersedes all prior agreements and understandings, whether written and oral,
among the parties hereto with respect to the subject matter hereof.

                  (e) This Agreement shall be governed by, and construed in
accordance with, the laws of the State of Delaware without giving effect to the
principles of conflicts of laws thereof.

                  (f) 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, and any such purported assignment shall be null and void; provided,
however, that either of Siemens or Acquisition may, without the prior written
consent of any Stockholder, assign its rights and obligations to any of its
direct or indirect wholly owned subsidiaries. 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, and the provisions
of this Agreement are not intended to confer upon any person other than the
parties hereto any rights or remedies hereunder.

                  (g) If any term, provision, covenant or restriction herein is
held by a court of competent jurisdiction or other authority to be invalid, void
or unenforceable or against its regulatory policy, the remainder of the terms,
provisions, covenants and restrictions of this Agreement shall remain in full
force and effect and shall in no way be affected, impaired or invalidated.

                  (h) Each of the parties hereto acknowledges and agrees that in
the event of any breach of this Agreement, each non-breaching party would be
irreparably and immediately harmed and could not be made whole by monetary
damages. It is accordingly agreed that the parties hereto (i) will waive, in any
action for specific performance, the defense of adequacy of a remedy at law and
(ii) shall be entitled, in addition to any other remedy to which they may be
entitled at law or in equity, to compel specific performance of this Agreement.

                  (i) No amendment, modification or waiver in respect to this
Agreement shall be effective unless it shall be in writing and signed by each
party hereto.

                  (j) No person who is or becomes (during the term hereof) a
director or officer of the Company makes any agreement or understanding herein
in his or her capacity as such director or officer, and nothing herein shall
limit or affect any action taken by any Stockholder in his or her capacity as an
officer or director of the Company in connection with the Company's rights under
the Merger Agreement.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]



                                       7
<PAGE>   8
         IN WITNESS WHEREOF, each of Siemens, Acquisition and the Stockholders
have caused this Agreement to be duly executed and delivered as of the date
first written above.


                                 SIEMENS CORPORATION


                                 By:   /s/ Gerald Wright
                                    --------------------------------------------
                                    Name:  Gerald Wright
                                    Title: Executive Vice President and
                                           Chief Financial Officer



                                 By:   /s/ Michael Schiefen
                                    --------------------------------------------
                                    Name:  Michael Schiefen
                                    Title: Vice President, Corporate Development


                                 EMILIA ACQUISITION CORP.


                                 By:   /s/ Michael Schiefen
                                    --------------------------------------------
                                    Name:  Michael Schiefen
                                    Title: Vice President


                                    /s/ Dort A. Cameron III
                                    --------------------------------------------
                                        DORT A. CAMERON III


                                 ENTEX ASSOCIATES L.P.

                                 By its General Partner, the Putnam Group, Inc.


                                 By:   /s/ Kenneth A. Ghazey
                                    --------------------------------------------
                                    Name:  Kenneth A. Ghazey
                                    Title: President


                                    /s/ John A. McKenna, Jr.
                                    --------------------------------------------
                                        JOHN A. MCKENNA, JR.
<PAGE>   9
                                     ANNEX I

                               Ownership of Shares

<TABLE>
<CAPTION>
         HOLDER                                             NUMBER OF SHARES
         ------                                             ----------------
<S>                                                         <C>
         Dort A. Cameron, III                                2,669,653
         Entex Associates L.P.                              21,407,739
         John A. McKenna, Jr.                                  642,204
</TABLE>






<PAGE>   1
                                   EXHIBIT 7.5


FOR IMMEDIATE RELEASE                                      CONTACT: TOM VARNEY
                                                                (212) 258-4335
                                                  [email protected]

               SIEMENS TO ACQUIRE ENTEX INFORMATION SERVICES, INC.

Acquisition  Bolsters  Siemens IT Service GmbH Global  Capability  to Support
Mission  Critical and  E-Business IT Systems and Infrastructure

         New York and Munich, March 14, 2000 - Siemens has announced today that
it has entered into an agreement to acquire ENTEX Information Services, Inc. of
Rye Brook, NY. Upon closing the combined operations will be one of the strongest
independent IT service providers in North America, with worldwide revenues of
nearly $2.2 billion and approximately 13,000 employees.

         Terms of the agreement are detailed in the Addendum.

         The acquisition marks an important step in Siemens' IT Service strategy
to establish a truly global information technology consulting and infrastructure
support business focused on helping customers migrate to and gain maximum
advantage from rapidly advancing mission critical and e-business technologies.

         Closing is subject to regulatory review and the expiration of
applicable antitrust waiting periods.

         Paul Stodden, president and CEO of Siemens global IT Service business
said: "The acquisition will enable us to provide borderless information
technology services that offer customers the power and expertise they will need
to leverage the benefits of U.S. developed e-business technologies on a
worldwide basis. We are opening a global menu of possibilities to our North
American and global customers by focusing on complex systems and networks used
for mission critical systems and e-business solutions. This will position
Siemens as one of the truly global providers of platform- and vendor-independent
information technology services."

         John McKenna, CEO of ENTEX Information Services, Inc. said: "The
business logic of joining the Siemens organization results in an outstanding
win-win for our customers, employees and our company."

         "ENTEX will have the backing of one of the world's premiere technology
companies and access to resources that will permit its accelerated growth. We
are very excited about the prospects that lay before us and believe that joining
Siemens will significantly improve our ability to realize our vision.", he
concluded.

         The new company "ENTEX IT Service, a Siemens Company" will be formed by


<PAGE>   2

merging the Siemens IT Service entity in North America with ENTEX Information
Services Inc.

         John McKenna, currently ENTEX's CEO, will assume the same position in
the new company.

         ENTEX Information Services, Inc. is a leading provider of distributed
computing infrastructure services to Fortune 1000 companies and other large,
information intensive businesses. ENTEX has annual sales of approximately $484
million (as of fiscal year-end 1999) and employs approximately 5,000 technical
professionals in over 50 sales and service locations throughout the U.S. The
company provides a complete spectrum of integrated technology solutions ranging
from desktop and network outsourcing, consulting services and field dispatch
services and currently has over 770,000 desktops and 30,000 servers under
management. ENTEX helps it customers to reduce the cost of ownership and
increase the value in their information technology investments. The company has
been recognized in the industry for its progressive role in helping customers
migrate and gain maximum value from rapidly advancing e-business technology.

         Siemens IT Service GmbH & Co. OHG had revenue of $1.7 billion in the
1998/99 business year. The Munich-based company is the second biggest supplier
of IT services in Europe; provides services in over 100 countries and employs
8,000 specialists worldwide.

         The company acts as a strong strategic partner to many leading European
organizations and provides a comprehensive portfolio of vendor independent
services including: Systems and Network management, E-business Services,
Consultancy, Project Management, and platform-independent Systems and Software
services.

         Siemens IT Service is part of the Information and Communications
business segment of Siemens AG, a global powerhouse in electrical engineering
and electronics with more than $75 billion in sales.

         Information and Communications consists of three groups: Information
and Communication Networks (59,000 employees, $13 billion sales), Information
and Communication Products (33,000 employees, $11 billion sales) and Siemens
Business Services (21,000 employees, $4 billion sales).

         Siemens IT Services USA, headquartered in San Jose, Calif., currently
pursues two lines of business: a UNIX/Windows NT client-server mission-critical
computing consulting business; and support services for UNIX data center
infrastructure and point-of-sale equipment.

ABOUT SIEMENS

         Siemens is an industry leader in telecommunications; energy and power;
lighting and precision materials; industry and automation; and healthcare, and a
key player in microelectronics and components; transportation; information
systems and other products.


<PAGE>   3

Siemens AG, based in Berlin and Munich, is one of the world's largest
electrical engineering and electronics companies and employs approximately
443,000 people in 193 countries.

         ENTEX and ENTEX Information Services, Inc. are trademarks or
registered trademarks of ENTEX Information Services, Inc.

ADDENDUM: CONSIDERATION TO BE RECEIVED IN THE MERGER

         Siemens will acquire in the merger all of the outstanding common stock
of ENTEX for an aggregate cash purchase price of $105 million less the following
deductions, without duplication:

             * the amount by which ENTEX's current assets less total
               liabilities at the "Measurement Date" referred to below are less
               than ENTEX's current assets less total liabilities at September
               26, 1999;

             * the expenses of ENTEX in connection with the merger, including
               legal and financial advisor fees and expenses and bonus,
               severance and additional compensation costs;

             * the $12.5 million premium which will be payable in connection
               with the redemption of ENTEX's 12-1/2% Senior Subordinated Notes
               due 2006;

             * an amount equal to $32.2 million less the book value of ENTEX's
               Subordinated Debentures as of the Measurement Date. It is
               estimated that this deduction will be approximately $12.0
               million.

         The first $20.0 million of the aggregate purchase price will be
deposited into an interest-bearing escrow to satisfy any indemnification claims
by Siemens relating to breaches of any representations, warranties or covenants
in the merger agreement. Any of these funds not utilized for such purposes (net
of escrow-related expenses) will be paid to the former ENTEX stockholders
eighteen months following the Measurement Date, except to the extent of any
unresolved indemnification claims as of such date.

         The next $20.0 million of the aggregate purchase price, if any, will be
deposited into an interest-bearing escrow to satisfy any tax liabilities and
related expenses relating to ENTEX's 1994, 1995 and 1996 fiscal years. Any of
these funds not utilized for such purposes (net of certain escrow-related
expenses) will be paid to the former ENTEX stockholders upon receipt of a refund
currently pending before the IRS with respect to these tax years or other
resolution of such tax matters. While the timing of the refund or other
definitive resolution of these tax matters cannot be determined, it is not
anticipated to occur prior to June 30, 2000.

         The remainder of the aggregate purchase price, if any (after a $500,000
reserve that may be utilized by Dort A. Cameron, III, the Chairman and
controlling stockholder of ENTEX, for expenses in his capacity as stockholders'
representative) will be released to the


<PAGE>   4

former stockholders of ENTEX promptly following the later of the resolution of
the Closing Statement referred to below or the effective time of the merger.

         Mr. Cameron, certain of his affiliates and John A. McKenna, ENTEX's
Chief Executive Officer, have granted to Siemens a call option to purchase
24,719,596 shares of ENTEX common stock in the aggregate, exercisable at any
time at the purchase price to be paid in the merger, payable at the same time(s)
other stockholders receive their consideration. In addition, Siemens has granted
to these stockholders the option to put their shares to Siemens for the same
purchase price in the event the Securities Exchange Commission reviews ENTEX's
Information Statement on Schedule 14C to be filed in connection with the merger
and the conditions to the merger are then satisfied.

         If either the call option or put option is exercised, the "Measurement
Date" will be the date shares of ENTEX common stock are purchased pursuant to
such exercise. If neither option is exercised, the "Measurement Date" will be
the effective time of the merger, which will occur promptly upon satisfaction of
the conditions to the merger. Holders of 7,104,148 shares of ENTEX common stock
have tag-along and drag-along rights and obligations. If either the call option
or the put option is exercised, Mr. Cameron will exercise his drag-along rights,
thereby requiring the holders of such shares to sell such shares to Siemens on
the same terms as his sale, including purchase price and timing of receipt of
payment.

         Within thirty days following the Measurement Date, Siemens will deliver
to Mr. Cameron, as the stockholders' representative, a Closing Statement setting
forth the calculation of the aggregate purchase price, based on the balance
sheet of ENTEX as of the Measurement Date. Mr. Cameron will have up to 15 days
to either approve or object to their Closing Statement. If he objects to their
Closing Statement, there is a dispute resolution mechanism in the merger
agreement that contemplates resolution of any objections within 40 days after
Mr. Cameron's objections, although actual resolution may take longer.

         Each share of ENTEX common stock will be entitled to receive its
proportionate share of the aggregate purchase price (as calculated in the manner
and at the times described above). As of March 9, 2000, there were 32,814,724
outstanding shares of ENTEX common stock. Because the final deductions to the
purchase price will not be known until the Closing Statement is agreed to, and
the total claims against the escrow amounts will not be finally known until the
end of the respective escrow periods, ENTEX cannot determine at this time what
either the aggregate purchase price or the purchase price per share will be.

         However, ENTEX estimates that the purchase price per share (including
amounts that will be subject to claims of Siemens under the two escrows) will be
between $1.20 and $1.50, and may be significantly less than such amount.

REDEMPTION OF THE OUTSTANDING SENIOR SUBORDINATED NOTES

Pursuant to the terms of the merger agreement, and in accordance with the terms
of the indenture for ENTEX's 12-1/2% Senior Subordinated Notes due 2006, ENTEX
will call for


<PAGE>   5

redemption all of the Notes outstanding at a redemption price equal to 112-1/2%
of their principal amount plus accrued interest to the date of redemption. The
redemption of the Notes will be funded by Siemens and is expected to take place
at least 30 days, and no more than 60 days, after the Measurement Date.






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