EXHIBIT 99.1

   STATEMENT UNDER OATH OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL
   OFFICER REGARDING FACTS AND CIRCUMSTANCES RELATING TO EXCHANGE ACT FILINGS

I, Timothy A. Crown, state and attest that:

(1)    To the best of my knowledge, based upon a review of the covered reports
of Insight Enterprises, Inc., and, except as corrected or supplemented in a
subsequent covered report:

       -      no covered report contained an untrue statement of a material fact
              as of the end of the period covered by such report (or in the case
              of a report on Form 8K or definitive proxy materials, as of the
              date on which it was filed); and

       -      no covered report omitted to state a material fact necessary to
              make the statements in the covered report, in light of the
              circumstances under which they were made, not misleading as of the
              end of the period covered by such report (or in the case of a
              report on Form 8-K or definitive proxy materials, as of the date
              on which it was filed).

(2)    I have reviewed the contents of this statement with the Company's audit
committee.

(3)    In this statement under oath, each of the following, if filed on or
before the date of this statement, is a "covered report":

       -      Annual Report on Form 10-K for the fiscal year ended December 31,
              2001 of Insight Enterprises, Inc.;

       -      all reports on Form 10-Q, all reports on Form 8-K and all
              definitive proxy materials of Insight Enterprises, Inc. filed with
              the Commission subsequent to the filing of the Form 10-K
              identified above; and

       -      any amendments to any of the foregoing.


/s/ Timothy A. Crown                             Subscribed and sworn to
- ---------------------------                      before me this 13th day of
Timothy A. Crown                                 August, 2002.
Chief Executive Officer
August 13, 2002
                                                 /s/ Darren Skarecky
                                                 --------------------------
                                                 Notary Public
                                                 My Commission Expires: 12/1/05