CERTIFICATE OF AMENDMENT
                                       TO
                          CERTIFICATE OF INCORPORATION
                                       OF
                              ALLSTAR SYSTEMS, INC.


Pursuant to the provisions of Sections 141, 222 and 242 of the Delaware  General
Corporation  Law  (the  "DGCL"),  Allstar  Systems,  Inc.,  a  corporation  duly
organized and existing under the DGCL (the  "Corporation"),  does hereby certify
that:

I.   The Board of Directors of the Corporation  (the "Board"),  by the unanimous
     written consent of its members filed with the minutes of the Board, adopted
     a  resolution  proposing  and  declaring  advisable  an  amendment  to  the
     Certificate of Incorporation of the Corporation (the "Amendment").

II.  Thereafter,  the  Amendment  set  forth  below  was  duly  adopted  by  the
     stockholders  of the Corporation in accordance with Section 242 of the DGCL
     at an annual meeting of stockholders.

III. Article I of the Certificate of Incorporation of the Corporation is deleted
     and replaced in its entirety as follows:

                                   "ARTICLE 1
                                      Name

     The name of the corporation is I-Sector Corporation (the "Corporation")."

IV.  That this  Certificate of Amendment  shall be effective on July 12, 2000 at
     9:00 a.m. Eastern Daylight Savings Time.

     In Witness Whereof Allstar Systems,  Inc. has caused this certificate to be
executed by Donald R. Chadwick, its authorized officer, on this 10th day of July
2000.

                                            ALLSTAR SYSTEMS, INC.


                                            By:  //Donald R. Chadwick
                                                 Donald R. Chadwick
                                                 Secretary