It would be something like
Code:
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
<td class="thead">Sponsor Links</td>
</tr>
<tr>
<td class="alt1">
<!-- Sponsor Stuff in here -->
</td>
</tr>
</table>
Near the bottom of the FORUMHOME template (probably under the line which says <!-- end what's going on box -->)