EXHIBIT 99.1 Report of Independent Certified Public Accountants on Schedule II To the Stockholders of I-Sector Corporation In connection with our audit of the consolidated financial statements of I-Sector Corporation and subsidiaries referred to in our report dated February 6, 2004, which is included in the Company's 2003 From 10-K, we have also audited Schedule II for the year ended December 31, 2003. In our opinion, this schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein. /s/Grant Thornton LLP Houston, Texas February 6, 2004