I think it goes in forumhome_forumbit_level1_post (and maybe the other levels as well?), and the section looks like:
Code:
<td class="alt2">$forum[lastpostinfo]</td>
<td class="alt1">$forum[threadcount]</td>
<td class="alt2">$forum[replycount]</td> <if condition="$vboptions['showmoderatorcolumn']">
<td class="alt1"><div class="smallfont">$forum[moderators] </div></td>
</if>
</tr>