<PAGE>   1

<TABLE>
<CAPTION>


  DATE           WARRANT HOLDER                            WARRANT        NUMBER OF    EXERCISE PRICE/
  ISSUED                                                   NO.             SHARES      EXPIRATION DATE

<S>              <C>                                       <C>            <C>          <C>
   2/9/2000      Timothy I. Maudlin                        2000-1            66,667    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Richard C. Lockwood                       2000-2           200,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Jeffrey I. Werbalowsky                    2000-3           100,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Opportune Investments                     2000-4           373,333    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Steven A. Lyman                           2000-5            22,222    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Jerry Ruyan                               2000-6            44,444    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Edward Hayes                              2000-7            10,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Scott and Francis Lee Free, trustees of   2000-8            22,222    Exercise price $3.00
                 the Fee Family Trust dtd 2/10/67                                      Expires 2/9/2005

   2/9/2000      Robert Seiler                             2000-9            44,444    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Arthur Engel Trust 1988                   2000-10          222,222    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Warner C. Lusardi Family Trust            2000-11          111,111    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Mary Kirtz                                2000-12           50,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Christopher D. Snell                      2000-13           20,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Gregory P. Mills Trust                    2000-14           10,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Stephen C. Particia A. Tadolini           2000-16           10,000    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Barry Nussbaum                            2000-17           38,888    Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Dean and Kathy L. Mills                   2000-18           10,000    Exercise price $3.00
                                                                                       Expires 2/9/2005
</TABLE>


<PAGE>   2

<TABLE>
<CAPTION>


  DATE           WARRANT HOLDER                           WARRANT        NUMBER OF    EXERCISE PRICE/
  ISSUED                                                  NO.             SHARES      EXPIRATION DATE

<S>              <C>                                       <C>            <C>          <C>
   2/9/2000      George M. Nix                             2000-19          10,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      US Bank Trust, NA Trustee FBO Bruce D.    2000-20          50,000     Exercise price $3.00
                 Leduc                                                                 Expires 2/9/2005
                 SEP/IRA No. 352130-4

   2/9/2000      Bruce Leduc                               2000-21          25,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Michael A. Bird                           2000-22          20,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      CO Right Investments, Inc.                2000-23         444,444     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      A. Larry Katz                             2000-25          44,444     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Gerald W. and Sandra L. Rogers            2000-26          10,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Fortman Cline AG                          2000-27         222,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      CLB Investments Corp.                     2000-28          50,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Stephen Marcus                            2000-29         226,167     Exercise price $3.00
                                                                                       Expires 2/9/2005

</TABLE>

<PAGE>   3

<TABLE>
<CAPTION>


  DATE ISSUED    WARRANT HOLDER                            WARRANT NO.    NUMBER OF    EXERCISE PRICE/
                                                                           SHARES      EXPIRATION DATE

<S>              <C>                                       <C>            <C>          <C>
   2/9/2000      George M. Nix                             2000-19          10,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      US Bank Trust, NA Trustee FBO Bruce D.    2000-20          50,000     Exercise price $3.00
                 Leduc                                                                 Expires 2/9/2005
                 SEP/IRA No. 352130-4

   2/9/2000      Bruce Leduc                               2000-21          25,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Michael A. Bird                           2000-22          20,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      CO Right Investments, Inc.                2000-23         444,444     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      A. Larry Katz                             2000-25          44,444     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Gerald W. and Sandra L. Rogers            2000-26          10,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Fortman Cline AG                          2000-27         222,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      CLB Investments Corp.                     2000-28          50,000     Exercise price $3.00
                                                                                       Expires 2/9/2005

   2/9/2000      Stephen Marcus                            2000-29         226,167     Exercise price $3.00
                                                                                       Expires 2/9/2005

</TABLE>