EXHIBIT 99.1

      CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        I, Robert W. Riland III, certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the
Quarterly Report of DISC Inc. on Form 10-Q for the quarterly period ended June
30, 2002 fully complies with the requirements of Section 13(a) or 15(d) of the
Securities Exchange Act of 1934 and that information contained in such Form 10-Q
fairly presents in all material respects the financial condition and results of
operations of DISC, Inc.

Dated: August 14, 2002              By:    /s/ ROBERT W. RILAND, III
                                           -------------------------------------
                                    Name:  Robert W. Riland, III
                                    Title: President and Chief Executive Officer

        I, Henry Madrid, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly
Report of DISC, Inc. on Form 10-Q for the quarterly period ended June 30, 2002
fully complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 and that information contained in such Form 10-Q fairly
presents in all material respects the financial condition and results of
operations of DISC, Inc.

Dated: August 14, 2002              By:    /s/ HENRY MADRID
                                           -------------------------------------
                                    Name:  Henry Madrid
                                    Title: Chief Financial Officer