(name this 'params.tmpl')

<TMPL_IF PARAMS>
   <table>
   <tr>
      <tH>KEY</th>
      <th>&nbsp;</th>
      <th>VALUE</th>
   </tr>
   <TMPL_LOOP NAME=PARAMS>
   <tr>
      <td align="right"><TMPL_VAR NAME=KEY></td>
      <td align="center">=&gt;</td>
      <td><TMPL_VAR NAME=VALUE></td>
   </tr>
   </TMPL_LOOP>
   </table>
<TMPL_ELSE>
   No params!
</TMPL_IF>