FOR IMMEDIATE RELEASE

ALLSTAR SYSTEMS ANNOUNCES AMENDMENT OF AGREEMENT TO SELL ITS COMPUTER PRODUCTS
DIVISION

     HOUSTON, April 7, 2000/PR Newswire/-Allstar  Systems,  Inc.(Nasdaq:  ALLS),
announced today that it reached agreement with Amherst  Technologies,  L.L.C. to
amend the previously  announced Asset Purchase  Agreement among Allstar Systems,
Amherst  and Amherst  Computer  Products  Southwest,  LP relating to the sale of
certain assets and the ongoing operations of its Computer Products Division.

     Pursuant to the  amendment,  in addition to the purchase  price provided in
the Asset  Purchase  Agreement,  Amherst paid to Allstar  Systems  $250,000 as a
non-accountable expense reimbursement.  In addition,  Amherst placed $500,000 in
an  escrow  account  to be  applied  to the  purchase  price at  closing  of the
transaction.

     Additionally,  James H. Long  amended  the  Voting  and  Support  Agreement
previously  executed by him in connection  with the  transaction.  The amendment
unconditionally  requires  him to vote all of his  shares  of  stock in  Allstar
Systems in favor of the transaction and against any other transaction.  Mr. Long
also  executed a proxy  granting to  designees  of Amherst the right to vote his
shares for the transaction and against any other transaction.

     The statements  contained in this document that are not  historical  facts,
including but not limited to, statements  identified by the use of words such as
"anticipate,"   "appear,"  "believe,"  "could,"  "estimate,"  "expect,"  "hope,"
"indicate,"  "intend,"  "likely," "may," "might," "plan,"  "potential,"  "seek,"
"should,"  "will," "would," and any other variations or negative  expressions of
these terms, are "forward-looking  statements" within the meaning of the Private
Securities  Litigation  Reformed  Act of 1995 and  involve a number of risks and
uncertainties.  The  actual  results  of  the  future  events  described  in the
forward-looking  statements in this document could differ  materially from those
stated in the forward-looking  statements due to numerous factors, including the
risks and  uncertainties  set forth from time to time in Allstar  Systems public
reports and filings and other public statements. Recipients of this document are
cautioned to consider these risks and uncertainties and not place undue reliance
on these forward-looking statements.

     For  additional  information  contact:  James H. Long,  President and Chief
Executive Officer, (713) 795-2301.