Document:

<PAGE>

                                                                   Exhibit 10.17

                        AMENDMENT TO EMPLOYMENT AGREEMENT

         THIS AMENDMENT, dated as of this 26th day of April, 2000, amends an
existing Employment Agreement dated as of April 26, 1997 (the "Agreement"),
between Professional Computer Solutions, Inc., a New York corporation (the
"Company") and Benjamin Tandowski ("Employee").

         The Company and Mr. Tandowski hereby ratify the Agreement in its
entirety, except for the following amendments thereto which are hereby agreed
to:

         1.   Any and all references to "U.S. Office Products Company" in the
Agreement are hereby replaced with "Aztec Technology Partners, Inc.";

         2.   Section 1 of the Agreement is hereby deleted in its entirety and
the following provision is inserted in lieu thereof:

              "1.  EMPLOYMENT; TERM. The Company hereby employs the Employee to
perform the duties described herein, and the Employee hereby accepts employment
with the Company for a term of 30 days after the date hereof (the "Term")."; and

         3.   The reference to U.S. Office Products Company and its address set
forth in Section 14 is hereby deleted in its entirety and the following is
substituted in lieu thereof:

                                  "Aztec Technology Partners, Inc.
                                  50 Braintree Hill Office Park, Suite 220
                                  Braintree, MA 02184
                                  Attn: T. Kenwood Mullare, Esq."

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date first written above.

                                  PROFESSIONAL COMPUTER
                                  SOLUTIONS, INC.

                                  By: /s/  Ross J. Weintraub
                                     -----------------------
                                  Name:  Ross J. Weintraub
                                  Title: Treasurer

EMPLOYEE:

/s/  Benjamin Tandowski
-----------------------
Benjamin Tandowski<PAGE>

                                                                     Exhibit 4.5

                                 FORM OF WARRANT

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR ANY STATE SECURITIES LAW
AND MAY NOT BE TRANSFERRED EXCEPT (i) PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER THE ACT OR (ii) UPON FIRST FURNISHING TO THE COMPANY AN OPINION
OF COUNSEL SATISFACTORY TO IT THAT SUCH TRANSFER IS NOT IN VIOLATION OF THE
REGISTRATION REQUIREMENTS OF THE ACT OR ANY STATE SECURITIES LAW.

THE SHARES OF STOCK THAT WOULD BE ISSUED UPON EXERCISE OR CONVERSION OF THIS
WARRANT ARE SUBJECT TO A CERTAIN REGISTRATION RIGHTS AGREEMENT, AS AMENDED FROM
TIME TO TIME, AMONG THE COMPANY, THE REGISTERED OWNER OF THIS WARRANT (OR ITS
PREDECESSOR IN INTEREST) AND OTHERS, AND SUCH AGREEMENT IS AVAILABLE FOR
INSPECTION WITHOUT CHARGE AT THE OFFICES OF THE COMPANY.

                         AZTEC TECHNOLOGY PARTNERS, INC.
                        WARRANT TO PURCHASE COMMON STOCK

         This certifies that, for value received, ___________________ ("Bank")
is entitled to subscribe for and purchase _______________(1) shares (subject to
adjustment from time to time pursuant to the provisions of Section 5 hereof) of
Common Stock, $0.001 par value per share (the "Company Common Stock"), of AZTEC
TECHNOLOGY PARTNERS, INC., a Delaware corporation (the "COMPANY"), at the
Warrant Price (as defined in Section 2 hereof), subject to the provisions and
upon the terms and conditions hereinafter set forth. The shares of Common Stock
issuable upon exercise or conversion of this Warrant are referred to herein as
"WARRANT SHARES."

         As used herein, the term "COMMON STOCK" shall mean the Company Common
Stock purchasable upon exercise of this Warrant, together with any other equity
securities that may be issued by the Company in substitution, conversion or
exchange therefor.

         This Warrant to purchase Common Stock (this "WARRANT") is issued
pursuant to that certain Third Amendment to Revolving Credit Agreement dated as

-------------------
(1) The number of Warrant Shares will equal the Bank's PRO RATA share of the
Warrant Shares for which Warrants are required to be issued on the date hereof
pursuant to the Third Amendment.

<PAGE>

of March 30, 2000 (the "THIRD AMENDMENT"), among Fleet National Bank, as agent
(the "AGENT"), Bank and the other banks party thereto (together with the Bank,
collectively called the "BANKS"), the Company and its Subsidiaries.

         1. TERM OF WARRANT. This Warrant may be exercised or converted, in
whole or in part, at any time during the period beginning on the date hereof
(the "ISSUE DATE") and ending at 5:00 p.m. Boston time on the third anniversary
of the Issue Date (the "EXPIRATION DATE").

         2. WARRANT PRICE. The price per share of Common Stock payable upon
exercise of this Warrant is $.01, subject to adjustment from time to time
pursuant to the provisions of Section 5 hereof (the "WARRANT PRICE").

         3. METHOD OF EXERCISE OR CONVERSION; PAYMENT; ISSUANCE OF NEW WARRANT.

                  (a) EXERCISE. Subject to Section 1 hereof, this Warrant may be
exercised by the holder hereof, in whole or in part, by the surrender of this
Warrant (with the notice of exercise form attached hereto as EXHIBIT A duly
executed) at the principal office of the Company and by the payment to the
Company, by check or wire transfer, of an amount equal to the then applicable
Warrant Price per share multiplied by the number of shares then being purchased.

                  (b) CONVERSION. In lieu of paying the Warrant Price in cash,
the holder may convert this Warrant, in whole or in part, into the number of
Warrant Shares calculated pursuant to the following formula by surrendering this
Warrant (with the notice of exercise form attached hereto as EXHIBIT A duly
executed) at the principal office of the Company, specifying the number of
shares of Common Stock of the Company subject to this Warrant that the holder
desires to convert:

         X  =  Y (A - B)
               ---------
                    A

         where             X  =     the number of shares of Common Stock to be
                                    issued to the holder;

                           Y  =     the number of shares of Common Stock
                                    subject to this Warrant being surrendered
                                    for conversion;

                           A  =     the fair market value of one share of Common
                                    Stock; and

                           B  =     the Warrant Price

         As used herein, the "fair market value" of a share of Common Stock
shall mean the closing price per share of the Company's Common Stock on the
principal national securities exchange on which the Common Stock is then listed
or admitted to trading or, if not then listed or admitted to trading on any such
exchange, on the Nasdaq National Market, or if not then listed or traded on any
such exchange or

                                     - 2 -
<PAGE>

market, the bid price per share on the Nasdaq Small Cap Market or, in the sole
discretion of the Board of Directors of the Company, any other over-the-counter
market, including the OTC Bulletin Board, which reports bid and asked or last
sale prices and volume of sales, in each case averaged over the last five
consecutive trading days before the day on which notice of exercise duly
executed and this Warrant are duly delivered to the Company. If at any time such
quotations are not available, the current fair market value of a share of Common
Stock shall be the highest price per share which the Company could obtain from a
willing buyer (not a current employee or director) for shares of Common Stock
sold by the Company, from authorized but unissued shares, as determined in good
faith by the Board of Directors of the Company. Upon any exercise or conversion
of this Warrant, the Company shall deliver certificates for the Warrant Shares
so acquired and, unless this Warrant has been fully converted or exercised, or
has expired, a new Warrant representing the portion of the Warrant Shares, if
any, remaining unexercised.

         4. STOCK FULLY PAID; RESERVATION OF SHARES. All Warrant Shares will,
upon issuance in accordance herewith, be fully paid and nonassessable and free
from all taxes, liens and charges with respect to the issue thereof. During the
term of this Warrant, the Company will at all times have authorized and reserved
for the purpose of the issuance upon exercise or conversion of this Warrant a
sufficient number of shares of its Common Stock to provide for the complete
exercise of the rights represented by this Warrant.

         5. ADJUSTMENTS.

                  (a) STOCK DIVIDENDS AND STOCK SPLITS. If, at any time after
the date hereof and before the Expiration Date, (i) the Company shall fix a
record date for the issuance of any stock dividend payable in shares of Common
Stock or (ii) the number of shares of Common Stock outstanding shall have been
increased by a subdivision or split-up of shares of Common Stock, then, on the
record date fixed for the determination of holders of Common Stock entitled to
receive such dividend or immediately after the effective date of such
subdivision or split-up, as the case may be, the number of shares of Common
Stock to be delivered upon exercise of this Warrant will be appropriately
increased so that the holder thereafter will be entitled to receive the number
of shares of Common Stock that the holder would have owned immediately following
such action had this Warrant been fully exercised immediately prior thereto, and
the Warrant Price will be appropriately adjusted.

                  (b) COMBINATION OF STOCK. If, at any time after the date
hereof and before the Expiration Date, the number of shares of Common Stock
outstanding shall have been decreased by a reverse stock split or other
combination of the outstanding shares of Common Stock, then, immediately after
the effective date of such combination, the number of shares of Common Stock to
be delivered upon exercise of this Warrant will be appropriately decreased so
that the holder thereafter will be entitled to receive the number of shares of
Common Stock that the holder would have owned immediately following such action
had such Warrant been fully

                                     - 3 -
<PAGE>

exercised immediately prior thereto, and the Warrant Price will be appropriately
adjusted.

                  (c) REORGANIZATION, ETC. If any capital reorganization of the
Company or any part thereof, or any reclassification of the Common Stock, or any
consolidation of the Company with or merger of the Company with or into any
other person or any sale, lease or other transfer of all or substantially all of
the assets of the Company to any other person (including any individual,
partnership, joint venture, corporation, trust or group thereof) shall be
effected in such a way that, following consummation of such transaction, the
holders of Common Stock shall be entitled to receive stock, securities or assets
with respect to or in exchange for Common Stock, then, upon exercise or
conversion of this Warrant in accordance with Section 3 hereof, the holder shall
have the right to receive the kind and amount of stock, securities or assets
receivable upon such reorganization, reclassification, consolidation, merger or
sale, lease or other transfer by a holder of the number of shares of Common
Stock that the holder would have been entitled to receive upon exercise or
conversion of this Warrant pursuant to Section 3 hereof had such Warrant been
exercised or converted immediately before such reorganization, reclassification,
consolidation, merger or sale, lease or other transfer, subject to adjustments
that shall be as nearly equivalent as may be practicable to the adjustments
provided for in this Section 5.

                  (d) LIMITATIONS. Anything in this Section 5 to the contrary
notwithstanding, no adjustment in the Warrant Price in accordance with the
provisions of 5(a), 5(b), or 5(c) hereof need be made if such adjustment would
amount to a change in such Warrant Price of less than $0.01; PROVIDED, HOWEVER,
that the amount by which any adjustment is not made by reason of the provisions
of this Section 5(d) shall be carried forward and taken into account at the time
of any later adjustment in the Warrant Price.

                  (e) READJUSTMENTS. If an adjustment is made under Sections
5(a), 5(b), or 5(c) and the event to which the adjustment relates does not occur
or is rescinded, then any adjustments in the Warrant Price or the number of
Warrant Shares that were made in accordance with such sections shall be adjusted
back to the Warrant Price and the number of Warrant Shares that were in effect
immediately before the date of or record date for such event.

                  (f) NOTICE OF ADJUSTMENT UNDER THIS WARRANT. Upon any
adjustment of the Warrant Price or the number of Warrant Shares, then, and in
each such case, the Company shall give written notice thereof, in the form of an
officer's certificate, to the holder hereof, which notice shall state the
Warrant Price resulting from such adjustment and the increase or decrease, if
any, in the number of Warrant Shares at such price upon the exercise of this
Warrant, setting forth in reasonable detail the method of calculation and the
facts upon which such calculation is based. However, failure to give such
notice, or any defect therein, shall not affect the legality or validity of the
subject adjustments.

                                     - 4 -
<PAGE>

                  (g) CERTIFICATE OF INDEPENDENT PUBLIC ACCOUNTANTS. The Company
may, but is not obligated to, retain a firm of independent public accountants of
recognized national standing (who may be any such firm regularly employed by the
Company) to make any computation required under this Section 5, and a
certificate signed by such firm shall be conclusive evidence of the correctness
of the computation made under this Section 5.

         6. FRACTIONAL SHARES. No fractional shares of Common Stock will be
issued in connection with any exercise hereunder, but in lieu of such fractional
shares the Company shall make a cash payment therefor upon the basis of the fair
market value of a share of Common Stock as of the date of exercise.

         7. COMPLIANCE WITH THE ACT. The holder of this Warrant, by acceptance
hereof, represents and agrees that this Warrant and the shares of Common Stock
to be issued upon exercise hereof are being acquired for investment for such
holder's own account and not with a view toward distribution hereof or thereof,
and that it will not offer, sell, transfer or otherwise dispose of this Warrant
or any Shares unless such transaction has been registered under the Act and
applicable state securities laws or (i) such registration is not required and
(ii) an opinion of counsel satisfactory to the Company is furnished to the
Company to that effect.

         8. MISCELLANEOUS.

                  (a) NO RIGHTS AS SHAREHOLDER. No holder of this Warrant, as
such, shall be entitled to vote or receive dividends or be deemed the holder of
Common Stock or any other securities of the Company which may at any time be
issuable on the exercise hereof for any purpose, nor shall anything contained
herein be construed to confer upon the holder of this Warrant, as such, any of
the rights of a shareholder of the Company or any right to vote for the election
of directors or upon any matter submitted to shareholders at any meeting
thereof, or to give or withhold consent to any corporate action (whether upon
any recapitalization, issuance of stock, reclassification of stock, change of
par value or change of stock to no par value, consolidation, merger, conveyance
or otherwise) or to receive notice of meetings, or to receive dividends or
subscription rights or otherwise until this Warrant shall have been duly
exercised or converted and the shares purchasable upon the exercise or
conversion hereof shall have become deliverable, as provided herein, and then,
the holder of this Warrant shall only have such rights with respect to such
shares received pursuant to such exercise or conversion.

                  (b) REPLACEMENT. On receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and, in the case of loss, theft or destruction, on delivery of an
indemnity agreement, or bond reasonably satisfactory in form and amount to the
Company or, in the case of mutilation, on surrender and cancellation of this
Warrant, the Company will execute and deliver, in lieu of this Warrant, a new
warrant of like tenor.

                                     - 5 -
<PAGE>

                  (c) NOTICE. Any notice given to either party under this
Warrant shall be in writing, and any notice hereunder shall be deemed to have
been given upon the earlier of (i) delivery thereof by hand delivery, by
courier, or by standard form of telecommunication, and (ii) three (3) business
days after the mailing thereof if sent registered or certified mail with postage
prepaid, addressed to the Company at its principal executive offices or to the
holder at its address set forth in the Company's books and records or at such
other address as the holder may have provided to the Company in writing.

                  (d) NO IMPAIRMENT. The Company will not, by amendment of its
Certificate of Incorporation or through any reorganization, transfer of assets,
consolidation, merger, dissolution, issue or sale of securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or performed hereunder by the Company, but will at all
times in good faith assist in the carrying out of all the provisions in the
Warrant.

                  (e) GOVERNING LAW. This Warrant shall be governed by and
construed under the laws of the State of Delaware.

         IN WITNESS WHEREOF, this Warrant is executed as of this ____ day of
__________, 2000.

                                              AZTEC TECHNOLOGY PARTNERS, INC.

                                              By:_______________________________
                                              Name:
                                              Title:

                                     - 6 -
<PAGE>

                                    EXHIBIT A

                               NOTICE OF EXERCISE

TO:      AZTEC TECHNOLOGY PARTNERS, INC.

         1.       Check Box that Applies:

         -TM-     The undersigned hereby elects to purchase ______ shares of
Common Stock pursuant to the terms of the attached Warrant, and tenders herewith
cash payment of the purchase price of such shares in full.

         -TM-     The undersigned hereby elects to convert ______ shares subject
to the attached Warrant into shares of shares of Common Stock pursuant to the
terms of the attached Warrant.

         2.       Please issue a certificate or certificates representing said
shares of Common Stock in the name of the undersigned or in such other name as
is specified below:

Name: ________________________________________
              [Typed Name of Holder]

Address: _____________________________________

         _____________________________________

         _____________________________________

Signature: ___________________________________
           Name:
           Title:

                                     - 7 -

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00008-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00008-of-00352.parquet"}]]