* Explanation of Responses

      As was reported in a Form 8-K filed on March 29, 1999, Mathew and Markson,
Ltd. (and its sister company, Morris & Miller, Ltd.) initially acquired the
Shares of Common Stock of the Issuer which are the subject of this Report
pursuant to an agreement (the "Stock Purchase Agreement") signed and executed on
March 16, 1999, between Telco Billing, Inc.; Mathew and Markson, Ltd.; Morris &
Miller, Ltd.; and RIGL Corporation ("RIGL"), which was the former name of the
Issuer. Mathew and Markson, Ltd. and Morris & Miller, Ltd. were the sole
shareholders of Telco.

      Pursuant to the Stock Purchase Agreement, Mathew and Markson, Ltd.
surrendered its shares of Telco, and, in exchange, Mathew and Markson, Ltd.
received 900,000 Shares of RIGL.

      Subsequently, as reported in a Form 8-K filed on June 30, 1999, on June
15, 1999, 6,750,000 additional Shares of Common Stock of RIGL were issued to
Mathew and Markson, Ltd. pursuant to the Stock Purchase Agreement.

      Therefore, as of June 30, 2000, the total number of Shares of Common Stock
of the Issuer held by Mathew and Markson, Ltd. was as follows:

            Prior Balance                             900,000 Shares
            Addition                                6,750,000 Shares
            New Balance                             7,650,000 Shares

      In addition, and in connection with the acquisition of Telco, RIGL also
agreed to pay Mathew & Markson, Ltd. $5,000,000 as a discounted accelerated
royalty payment for a 20-year license of the URLYellow-Page.Net.