Document:

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                                                                     Exhibit 4.4

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.

                    FORM OF WARRANT TO PURCHASE COMMON STOCK

         This certifies that, for value received, ___________________ ("Bank")
is entitled to subscribe for and purchase _______________ 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 Fourth Amendment to Revolving Credit Agreement dated as
of September __, 2000 (the "FOURTH 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").
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         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 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,

                                      -2-
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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 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

                                      -3-
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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.

              (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

                                      -4-
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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.

              (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.

                                      -5-
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              (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.

                                      -6-
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         IN WITNESS WHEREOF, this Warrant is executed as of this ____ day of
__________, 2000.

                                            AZTEC TECHNOLOGY PARTNERS, INC.

                                            By: _______________________________
                                            Name:
                                            Title:

                                      -7-
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                                            EXHIBIT A

                               NOTICE OF EXERCISE

TO:      AZTEC TECHNOLOGY PARTNERS, INC.

         1.       Check Box that Applies:

         / / 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.

         / / 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:

                                      -8-<PAGE>

                                                                   Exhibit 10.18

                               FOURTH AMENDMENT TO
                  REVOLVING CREDIT AGREEMENT AND LIMITED WAIVER

         Fourth Amendment and Limited Waiver dated as of September 15, 2000 to
Revolving Credit Agreement (this "Fourth Amendment"), by and among AZTEC
TECHNOLOGY PARTNERS, INC., a Delaware corporation (the "Borrower"), BLUEFLAME
INC. (DE) (F/K/A PROFESSIONAL COMPUTER SOLUTIONS, INC.) ("BlueFlame"), as
Co-Borrower with respect to $15,000,000 in outstanding principal amount of
Acquisition Loans, FLEET NATIONAL BANK (F/K/A BANKBOSTON, N.A.) and the other
lending institutions listed on SCHEDULE 1 to the Credit Agreement (as
hereinafter defined) (the "Banks"), amending certain provisions of the Revolving
Credit Agreement dated as of July 27, 1998 (as amended and in effect from time
to time, the "Credit Agreement") by and among the Borrower, the Banks and Fleet
National Bank (f/k/a BankBoston, N.A.) as agent for the Banks (the "Agent").
Terms not otherwise defined herein which are defined in the Credit Agreement
shall have the same respective meanings herein as therein.

         WHEREAS, the Borrower has requested that the Banks amend certain
provisions contained in the Credit Agreement and waive certain covenants
contained therein; and

         WHEREAS, the Banks have agreed with the Borrower, subject to the terms
and conditions contained herein, to modify certain terms and conditions of the
Credit Agreement and grant such waivers as specifically set forth in this Fourth
Amendment;

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements contained herein and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
hereby agree as follows:

         SECTION 1. WAIVER. The Borrower has informed the Agent and the Banks
that the Debt Service Coverage Ratio for the period of April 1, 2000 through
June 30, 2000 (the "Second Quarter") did not meet the required level of
1.00:1.00 during such Second Quarter and, as such, the Borrower has failed to
comply with ss. 11.2 of the Credit Agreement during the Second Quarter. Also,
the Banks' waiver of Borrower's failure to comply with ss. 11.2 of the Credit
Agreement for the period of January 1, 2000 through March 31, 2000 (the "First
Quarter") pursuant to Limited Waiver No. 2, dated as of June 17, 2000, expires
on August 14, 2000. The Borrower has requested that the Banks waive, to the
limited extent necessary to permit such noncompliance for the First Quarter and
the Second Quarter and for each fiscal quarter of the Borrower thereafter
through April 30, 2001, the provisions of ss. 11.2. Subject to the satisfaction
of the conditions precedent set forth in Section 6 hereof, effective as of
August 14, 2000, the Banks hereby waive the provisions of ss. 11.2 of the Credit
Agreement solely to the extent necessary to permit the above-referenced
noncompliance, and only with respect to the determination of compliance for the
First Quarter and the Second Quarter and for each fiscal quarter of the Borrower
thereafter through April 30, 2001.

         SECTION 2. CONSENT AND WAIVER. The Agent and the Bank hereby consent to
the winding up and termination of business of Professional Network Services,
Inc., notwithstanding that the same would otherwise violate various terms and
provisions of the Credit Agreement, and hereby

                                       1

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waive any Default and Events of Default (and only such Defaults and Events of
Default) that would otherwise be caused by such violations.

         SECTION 3. AMENDMENT TO SECTION 1 OF THE CREDIT AGREEMENT. Section 1.1
of the Credit Agreement is hereby amended as follows:

              (a) the definitions of "Interest Payment Date" and "PCSI" are
hereby amended by deleting such definitions in their entirety and restating them
as follows:

              INTEREST PAYMENT DATE. (a) As to any Base Rate Loan, the last day
of the calendar month with respect to interest accrued during such calendar
month, including, without limitation, the calendar month which includes the
Drawdown Date of such Base Rate Loan; and (b) as to any LIBOR Rate Loan in
respect of which the Interest Period is (i) 1 month or less, the last day of
such Interest Period and (ii) more than 1 month, the date that is 1 month from
the first day of such Interest Period and each 1 month interval thereafter
during such Interest Period and, in addition, the last day of such Interest
Period.

              PCSI. BlueFlame Inc. (DE), a New York corporation (f/k/a
Professional Computer Solutions, Inc.) or BlueFlame Inc., a Delaware
corporation, successor by merger to BlueFlame Inc. (DE), as the case may be.

              (b) Section 1.1 of the Credit Agreement is hereby amended by
inserting the following definitions in the appropriate alphabetical order:

              FOURTH AMENDMENT. The Fourth Amendment to Revolving Credit
Agreement and Limited Waiver dated as of September 15, 2000, by and among the
Borrower, PCSI, the Agent and the Banks.

         SECTION 4. AMENDMENT TO SECTION 4 OF THE CREDIT AGREEMENT. Section
4.8.2 of the Credit Agreement is hereby amended by deleting the first sentence
thereof (contained in the Third Amendment) and restating it as follows:

    In the event the Borrower or any of its Subsidiaries receives any Net Cash
Sale Proceeds or Net Offering Proceeds from any Asset Sale permitted by Section
10.5.2 or otherwise consented to in writing by the Majority Banks (or, in the
event such a sale constitutes a sale of all or substantially all of the
Collateral, then consented to in writing by all of the Banks), the Borrower
shall, immediately upon receipt thereof, pay all outstanding fees and expenses
of the Agent and the Banks, including without limitation any Overadvance Fees
and Amendment Fee required to be paid from such proceeds and shall make a
prepayment of principal on the Acquisition Loans (or to the extent the
Acquisition Loans have been repaid in full, then a prepayment of principal on
the Revolving Credit Loans) in the amount of all remaining Net Cash Sale
Proceeds or Net Offering Proceeds; provided, however, that (i) in the case of
Net Offering Proceeds resulting from an initial public offering of the common
stock of PCSI or from the sale of the stock or assets of PCSI as permitted by
Section 2(c) of the Third Amendment, such prepayment shall be in an amount equal
to the outstanding Obligations and the Total Commitment, the Total Acquisition
Commitment and the Total Facility Commitment shall be permanently reduced to
zero on the date of such prepayment and (ii) in the case of Net Cash Sale
Proceeds from the sale of the stock or assets of a Subsidiary other than PCSI as
permitted by Section 2(c) of the Third Amendment, such

                                       2
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prepayment shall be in an amount equal to the sum of (x) the Minimum Net Cash
Sale Proceeds for such Subsidiary and (y) 80% of the Net Cash Sale Proceeds in
excess of the Minimum Net Cash Sale Proceeds for such Subsidiary; with the Total
Acquisition Commitment (and/or the Total Commitment, as applicable) and the
Total Facility Commitment also being permanently reduced by the amount of such
prepayment.

         SECTION 5. AMENDMENT TO SECTION 9 OF THE CREDIT AGREEMENT. Section 9 of
the Credit Agreement is hereby amended as follows:

              (a) Section 9.4(i) of the Credit Agreement is hereby amended be
deleting such Section 9.4(i) in its entirety and replacing it with the
following:

              "(i) at 2:00 p.m. Boston time on Thursday, September 14, 2000 and
at 2:00 p.m. Boston time on each two-week anniversary thereof, the Borrower will
make financial and other appropriate officers of the Borrower and its
Subsidiaries available to the Agent and the Banks for a dial-in conference call,
which will be arranged by the Borrower and of which arrangements the Borrower
shall notify the Agent and the Banks at least one Business Day prior to each
such call, to discuss the information in any of the foregoing reports or other
reports delivered to the Banks by the Borrower or its Subsidiaries and answer
any questions the Agent or the Banks may have regarding the Borrower and its
Subsidiaries. In addition, the Borrower will use commercially reasonable efforts
to continue to provide reports to the Banks of its cash flow on a bi-weekly
basis."

              (b) Section 9 of the Credit Agreement is hereby amended by
deleting Sections 9.20, 9.21, 9.22 and 9.23 and replacing them with the
following:

              9.20. PCSI IPO. The Borrower will obtain the prior written consent
of the Agent and each of the Banks for any initial public offering of the stock
of PCSI, which consent shall not unreasonably be withheld if the Obligations
would be repaid in full from the proceeds thereof. The Borrower shall pay, or
shall cause PCSI to pay, any unpaid Amendment Fee and any earned and unpaid
Overadvance Fees and other unpaid fees and expenses of the Agent and the Banks
from the Net Offering Proceeds of such offering (including the offering of
underwriters' overallotment shares, if any) and shall use a portion of the
remaining Net Offering Proceeds of such offering (including the offering of
underwriters' overallotment shares, if any), to repay all Obligations in full
and the Total Commitment, the Total Acquisition Commitment and the Total
Facility Commitment shall be permanently reduced to zero on the date of such
prepayment.

              9.21. ADDITIONAL FINANCING. [Intentionally omitted.]

              9.22. WARRANTS. As consideration for the Fourth Amendment and in
lieu of any Warrants that the Borrower may be or become obligated to issue to
the Banks pursuant to the Third Amendment, the Borrower hereby agrees to issue
to each of the Banks a warrant to purchase common stock of the Borrower in the
form attached hereto as EXHIBIT I (each a "WARRANT"), exercisable for the number
of Warrant Shares (as defined in the Warrant) equal to such Bank's PRO RATA
share (in accordance with such Bank's Commitment Percentage of the Total
Facility Commitment) of the number of Warrant Shares that would equal 3% of the

                                       3
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outstanding shares of the Borrower's common stock on the date of the Fourth
Amendment (assuming issuance of all shares of common stock issuable upon
exercise of all outstanding options, warrants and other rights and upon
conversion of all outstanding convertible securities). As consideration for the
Fourth Amendment, the Borrower also agrees that on December 31, 2000, in the
event that the Total Facility Commitment is not permanently reduced to
$32,000,000, the Borrower shall automatically issue to each of the Banks a
warrant to purchase common stock of the Borrower in the form attached hereto as
EXHIBIT I (each a "WARRANT"), exercisable for the number of Warrant Shares (as
defined in the Warrant) equal to such Bank's PRO RATA share (in accordance with
such Bank's Commitment Percentage of the Total Facility Commitment) of the
number of Warrant Shares that, when combined with the cumulative number of
Warrant Shares for which all Warrants theretofore issued to the Banks would be
exercisable, would equal 4% of the outstanding shares of the Borrower's common
stock on such date (assuming issuance of all shares of common stock issuable
upon exercise of all outstanding options, warrants and other rights and upon
conversion of all outstanding convertible securities). For purposes of
determining whether the Total Facility Commitment has been permanently reduced
to $32,000,000, amounts in respect of Amendment Fee or Overadvance Fees paid
from proceeds of an Asset Sale (including without limitation a capitalization
event) in advance of the scheduled installment payment date or Revolving Credit
or Acquisition Loan Maturity Date, as applicable, shall be deemed to have been
applied to permanently reduce the Total Facility Commitment. The Banks shall
have the registration rights with respect to the Warrant Shares as set forth in
the Registration Rights Agreement among the Borrower and the Banks. The Borrower
shall use its commercially reasonable efforts to have the Securities and
Exchange Commission declare the registration statement with respect to the
Warrants effective as soon as possible after the date of the Fourth Amendment,
including filing all amendments necessary to reflect changes in the Borrower's
circumstances and the terms of issuance of the Warrants. Assuming it has used
its commercially reasonable efforts and continues to do so, the failure of such
registration statement to become effective shall not constitute a Default or
Event of Default under the Credit Agreement or this Fourth Amendment. The
Borrower will at all times maintain sufficient authorized but unissued shares of
Common Stock reserved for issuance upon exercise of the Warrants. On the date of
issuance of each of the Warrants, each such Warrant shall have been duly and
validly issued to the respective Bank. The Warrant Shares will be duly and
validly issued, fully paid and nonassessable upon issuance by the Borrower and
payment of the exercise price therefor (or conversion thereof) in accordance
with the provisions of the Warrants. Upon exercise of the Warrants, and the
delivery by the Borrower of stock certificates representing Warrant Shares, all
in accordance with the terms of the Warrants, lawful and valid title to each of
such Warrant Shares will be conveyed to and vested in the Banks, free and clear
of all restrictions and other liens and encumbrances, except the agreements,
restrictions and other liens and encumbrances (if any) imposed by the Third
Amendment, the Fourth Amendment, the Warrants and applicable law.

              9.23. POSTCLOSING ITEMS. The Borrower shall deliver to the Agent,
within 30 days after the date of the Fourth Amendment satisfactory evidence that
all liens against the assets of the Borrower and its Subsidiaries other than
Permitted Liens have been released and removed of record and a revised schedule
of Permitted Liens satisfactory to the Agent to replace that contained in the
DISCLOSURE SCHEDULE. The Borrower shall deliver to the Agent, within seven days
after the date of the Fourth Amendment a revised DISCLOSURE SCHEDULE that is
accurate and complete as of such date and which DISCLOSURE SCHEDULE shall
contain no information that had

                                       4
<PAGE>

such information been known to the Banks on the date of the Fourth Amendment
would have caused any Bank acting reasonably to have refused to agree to the
Fourth Amendment. The Borrower shall deliver to the Agent at the time of
execution and delivery of any Warrants, an opinion of counsel reasonably
satisfactory in form and substance to the Agent as to the corporate power and
authority and capitalization of the Borrower, due authorization, execution and
delivery, validity and enforceability of the Warrants and other customary
provisions. The Borrower hereby agrees to pay all reasonable expenses, including
legal fees and disbursements incurred by the Agent and the Banks in connection
with the Fourth Amendment and the transactions contemplated thereby and any
other expenses, legal fees and disbursements required to be paid pursuant to ss.
17.1 of the Revolving Credit Agreement for which an invoice is submitted after
the date of the Fourth Amendment within 30 days after the date of the respective
invoice.

         SECTION 6. AMENDMENT TO SECTION 10.1 OF THE CREDIT AGREEMENT. Section
10.1 of the Credit Agreement is hereby amended by deleting ss. 10.1(c) in its
entirety and replacing it with the following:

         "(c) Indebtedness incurred in connection with the acquisition after the
date hereof of any real or personal property by the Borrower or such Subsidiary
or under any Capitalized Lease, PROVIDED that (i) if at the time such
Indebtedness is incurred, no Default or Event of Default shall have occurred and
be continuing, or would occur after giving effect to such transaction on a pro
forma basis; and (ii) immediately after giving effect to such incurrence, the
aggregate principal amount of all Indebtedness of the Borrower and its
Subsidiaries outstanding pursuant to this ss. 10.1(c) shall not exceed
$250,000;"

         SECTION 7. CONDITIONS TO EFFECTIVENESS. This Fourth Amendment shall
become effective only upon the satisfaction of the following conditions:

              (a) this Fourth Amendment shall have been executed by the
Borrower, PCSI, all of the Banks and the Agent and the Ratification of Guaranty
in the form attached hereto shall have been executed by each Guarantor;

              (b) the Borrower shall have delivered to the Agent and the Banks
an opinion of counsel satisfactory in form and substance to the Agent as to the
corporate power and authority of the Borrower, due authorization, execution and
delivery, validity and enforceability of the Fourth Amendment and other
customary provisions;

              (c) the Borrower shall have delivered to the Banks the Warrants
required to be delivered on the date of this Fourth Amendment pursuant to the
terms of this Fourth Amendment;

              (d) the Borrower and holders of at least 80% of the outstanding
principal amount of the Loans shall have executed and delivered a First
Amendment to Registration Rights Agreement in the form of EXHIBIT J attached
hereto; and

              (e) the Borrower shall have paid all reasonable expenses,
including legal fees and disbursements incurred by the Agent and the Banks in
connection with this Fourth Amendment and the transactions contemplated hereby
and any other expenses, legal

                                       5
<PAGE>

fees and disbursements required to be paid pursuant to ss. 17.1 of the Credit
Agreement and not heretofore paid by the Borrower for which an invoice has been
submitted.

         SECTION 8. REPRESENTATIONS AND WARRANTIES. The Borrower hereby repeats,
on and as of the date hereof, each of the representations and warranties made by
it in ss. 8 of the Credit Agreement, and such representations and warranties
remain true as of the date hereof (except in such respects (none of which shall
be materially adverse) as may be set forth on the DISCLOSURE SCHEDULE required
to be delivered pursuant to ss. 9.23 of the Credit Agreement, as amended hereby,
and to the extent of changes resulting from transactions contemplated or
permitted by the Credit Agreement and the other Loan Documents and changes
occurring in the ordinary course of business that singly or in the aggregate are
not materially adverse, and to the extent that such representations and
warranties relate expressly to an earlier date), PROVIDED, that all references
therein to the Credit Agreement shall refer to such Credit Agreement as amended
hereby. In addition, the Borrower hereby represents and warrants that (a) the
execution and delivery by the Borrower and each Guarantor of this Fourth
Amendment and the performance by the Borrower and each Guarantor of all of its
agreements and obligations under the Credit Agreement as amended hereby and the
other Loan Documents are within the corporate authority of the Borrower and each
Guarantor and have been duly authorized by all necessary corporate action on the
part of the Borrower and each Guarantor party thereto, (b) the Borrower has, on
or prior to the date hereof, duly and properly authorized, subject to the
satisfaction of certain conditions precedent set forth in Section 9.22 of the
Credit Agreement (as amended hereby), the issuance of the Warrants in or
substantially in the form of EXHIBIT I attached hereto, evidencing right to
subscribe for and purchase from the Borrower the number of Warrant Shares to
which each of the Banks is entitled pursuant to the terms of this Fourth
Amendment, (c) the Borrower has duly and properly authorized the issuance of
Warrant Shares issuable upon due exercise or conversion of the Warrants and (d)
the Borrower has filed in a timely manner each report required to be filed by it
with the Securities and Exchange Commission pursuant to Sections 13, 14 or 15(d)
of the Securities Exchange Act of 1934 since December 31, 1998.

         SECTION 9. EXHIBITS. The Credit Agreement is hereby amended to delete
EXHIBIT I to the Credit Agreement (attached to the Third Amendment) and to
substitute EXHIBIT I attached hereto in its place, as if the same were EXHIBIT I
to such Credit Agreement.

         SECTION 10. RATIFICATION, ETC. Except as expressly amended hereby, the
Credit Agreement and all documents, instruments and agreements related thereto,
including, but not limited to the Security Documents, are hereby ratified and
confirmed in all respects and shall continue in full force and effect. The
Credit Agreement and this Fourth Amendment shall be read and construed as a
single agreement. All references in the Credit Agreement or any related
agreement or instrument to the Credit Agreement shall hereafter refer to the
Credit Agreement as amended hereby.

         SECTION 11. NO WAIVER. Nothing contained herein shall constitute a
waiver of, impair or otherwise affect any Obligations, any other obligation of
the Borrower or any rights of the Agent or the Banks consequent thereon, except
such waivers as are specifically set forth herein.

         SECTION 12. RELEASE OF CLAIMS. The Borrower and, by executing the
attached Ratification of Guaranty, each of the Borrower's Subsidiaries hereby
releases the Agent and the Banks and all

                                       6
<PAGE>

agents, officers, directors, shareholders, or anyone acting at the direction or
control of the Agent or each or all Banks from any and all liabilities and
claims under the Credit Agreement, this Fourth Amendment, the Registration
Rights Agreement or any Security Documents or otherwise in connection with the
transactions contemplated thereby, except those arising after the time of
execution and delivery of this Fourth Amendment.

         SECTION 13. COUNTERPARTS. This Fourth Amendment may be executed in one
or more counterparts, each of which shall be deemed an original but which
together shall constitute one and the same instrument.

         SECTION 14. GOVERNING LAW. THIS FOURTH AMENDMENT SHALL BE GOVERNED BY,
AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS
(WITHOUT REFERENCE TO CONFLICT OF LAWS).

                                       7
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have executed this Fourth
Amendment as a document under seal as of the date first above written.

                                   AZTEC TECHNOLOGY PARTNERS, INC.

                                   By: /s/ Ira Cohen
                                       ----------------------------------------
                                       Title: President

                                   BLUEFLAME INC. (DE)
                                   (F/K/A PROFESSIONAL COMPUTER
                                   SOLUTIONS, INC.)
                                   (HAVING JOINT AND SEVERAL LIABILITY FOR A
                                   PORTION OF THE ACQUISITION LOANS HAVING AN
                                   OUTSTANDING PRINCIPAL AMOUNT OF
                                   $15,000,000)

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

                                   CITIZENS BANK OF MASSACHUSETTS

                                   By: /s/ James M. Ray
                                       ----------------------------------------
                                       Name: James M. Ray
                                       Title: Vice President

                                   FLEET NATIONAL BANK (AS AGENT AND AS A BANK)

                                   By: /s/ Richard E. Lynch
                                       ----------------------------------------
                                       Name: Richard E. Lynch
                                       Title: Vice President

                                   THE FUJI BANK, LIMITED

                                   By: /s/ Masahito Fukuda
                                       ----------------------------------------
                                       Name: Masahito Fukuda
                                       Title: Senior Vice President and
                                              Group Head

                                       8
<PAGE>

                                   NATIONAL CITY BANK OF KENTUCKY

                                   By: /s/ Glenn E. Nord
                                       ----------------------------------------
                                       Name: Glenn E. Nord
                                       Title: Vice President

                                   LASALLE BANK NATIONAL ASSOCIATION

                                   By: /s/ John J. McGuire
                                       ----------------------------------------
                                       Name: John J. McGuire
                                       Title: First Vice President

                                   PEOPLE'S BANK

                                   By: /s/ Dante Pazzine
                                       ----------------------------------------
                                       Name: Dante Pazzine
                                       Title: Vice President

                                       9
<PAGE>

                            RATIFICATION OF GUARANTY

         Each of the undersigned guarantors hereby acknowledges and consents to
the foregoing Fourth Amendment as of September 15, 2000, and agrees that the
Guaranty dated as of (a) July 27, 1998; (b) September 17, 1998; (c) October 2,
1998, or June 26, 2000 from each of the undersigned Guarantors remain in full
force and effect, and each of the Guarantors confirms and ratifies all of its
obligations thereunder.

                                   AZTEC INTERNATIONAL LLC

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

                                   AZTEC TECHNOLOGY PARTNERS OF NEW
                                   ENGLAND LLC (F/K/A BAY STATE
                                   COMPUTER GROUP LLC)

                                   By: /s/ Ira Cohen
                                       ----------------------------------------
                                       Title: President

                                   ENTRA COMPUTER CORP.

                                   By: /s/ Ira Cohen
                                       ----------------------------------------
                                       Title: President

                                   PCM, INC.

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

                                   BLUEFLAME INC. (DE) (F/K/A
                                   PROFESSIONAL COMPUTER SOLUTIONS, INC.)

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

                                       10
<PAGE>

                                   PROFESSIONAL NETWORK SERVICES, INC.

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

                                   MCDOWELL, TUCKER & CO., INC.

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

                                   SOFTECH COMMUNICATIONS, INC.

                                   By: /s/ Ira Cohen
                                       ----------------------------------------
                                       Title: President

                                   SOLUTIONS E.T.C. INC.

                                   By: /s/ Ira Cohen
                                       ----------------------------------------
                                       Title: President

                                   DIGITAL NETWORK ASSOCIATES LLC

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

                                       11

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