<table>
<tbody><tr style="font-size:1px">
<td width="5%" valign="TOP">
<p>&nbsp;</p>
</td>
<td width="95%" valign="TOP">
<p>&nbsp;</p>
</td>
</tr>
<tr>
<td valign="TOP">
<p><font size="2">(1)</font></p>
</td>
<td valign="TOP">
<p align="JUSTIFY"><font size="2">Includes options to
  purchase 438,750 shares of Common Stock granted under our 2002 Long-Term
  Incentive Plan and options to purchase 27,500 shares of Common Stock granted
  under our 1992 Stock Option Plan.</font></p>
</td>
</tr>
<tr>
<td valign="TOP">
<p><font size="1">&nbsp;</font></p>
</td>
<td valign="TOP">
<p><font size="1">&nbsp;</font></p>
</td>
</tr>
<tr>
<td valign="TOP">
<p><font size="2">(2)</font></p>
</td>
<td valign="TOP">
<p align="JUSTIFY"><font size="2">Consists of warrants to
  purchase shares of Common Stock issued in 1997 to a director of ours, in
  connection with our entry into a financial advisory services agreement.
  </font></p>
</td>
</tr>
</tbody></table>
<table>
<tbody><tr>
<td>
<p> </p>
</td>
<td>
<p> </p>
</td>
</tr>
<tr>
<td>
<p><font>(1)</font></p>
</td>
<td>
<p><font>Includes options to
  purchase 438,750 shares of Common Stock granted under our 2002 Long-Term
  Incentive Plan and options to purchase 27,500 shares of Common Stock granted
  under our 1992 Stock Option Plan.</font></p>
</td>
</tr>
<tr>
<td>
<p><font> </font></p>
</td>
<td>
<p><font> </font></p>
</td>
</tr>
<tr>
<td>
<p><font>(2)</font></p>
</td>
<td>
<p><font>Consists of warrants to
  purchase shares of Common Stock issued in 1997 to a director of ours, in
  connection with our entry into a financial advisory services agreement.
  </font></p>
</td>
</tr>
</tbody></table>