Oh damn... then I'm the one who has to answer this...
Try this.
OPEN
templates/default/index_box.tpl
FIND
<!-- BEGIN catrow -->
<!-- BEGIN tablehead -->
<div id="{catrow.MAIN_CAT_ID}_f_h" style="display:none;">
{IMG_THL}{IMG_THC}<img class="max-min-right" style="{SHOW_HIDE_PADDING}" src="{IMG_MAXIMISE}" onclick="ShowHide('{catrow.MAIN_CAT_ID}_f','{catrow.MAIN_CAT_ID}_f_h','{catrow.MAIN_CAT_ID}_f');" alt="{L_SHOW}" /><span class="forumlink">{catrow.tablehead.L_FORUM}</span>{IMG_THR_ALT}<table class="forumlinenb" width="100%" cellspacing="0" cellpadding="0">
<tr><td> </td></tr>
</table>{IMG_TFL}{IMG_TFC}{IMG_TFR}
</div>
<div id="{catrow.MAIN_CAT_ID}_f">
<script type="text/javascript">
<!--
tmp = '{catrow.MAIN_CAT_ID}_f';
if(GetCookie(tmp) == '2')
{
ShowHide('{catrow.MAIN_CAT_ID}_f', '{catrow.MAIN_CAT_ID}_f_h', '{catrow.MAIN_CAT_ID}_f');
}
//-->
</script>
{IMG_THL_ALT}{IMG_THC}<img class="max-min-right" style="{SHOW_HIDE_PADDING}" src="{IMG_MINIMISE}" onclick="ShowHide('{catrow.MAIN_CAT_ID}_f','{catrow.MAIN_CAT_ID}_f_h','{catrow.MAIN_CAT_ID}_f');" alt="{L_HIDE}" /><span class="forumlink">{catrow.tablehead.L_FORUM}</span>{IMG_THR}<table class="forumlinenb" width="100%" cellspacing="0" cellpadding="0">
<!-- BEGIN cathead -->
<tr>
<!-- BEGIN inc -->
<td width="46" class="{catrow.cathead.inc.INC_CLASS}"><img src="{SPACER}" width="46" height="0" /></td>
<!-- END inc -->
<td class="{catrow.cathead.CLASS_CAT}" width="100%" colspan="{catrow.cathead.INC_SPAN}"><span class="cattitle"><a href="{catrow.cathead.U_VIEWCAT}" class="cattitle" title="{catrow.cathead.CAT_DESC}">{catrow.cathead.CAT_TITLE}</a></span></td>
<td class="{catrow.cathead.CLASS_ROWPIC}" colspan="3" align="right"> </td>
</tr>
<!-- END cathead -->
<tr>
<th colspan="{catrow.tablehead.INC_SPAN}" nowrap="nowrap"> {L_FORUM} </th>
<!--
<th width="50"> {L_TOPICS} </th>
<th width="50"> {L_POSTS} </th>
-->
<th width="120" colspan="2"> {L_TOPICS} / {L_POSTS} </th>
<th width="180"> {L_LASTPOST} </th>
</tr>
<!-- END tablehead -->
REPLACE WITH
{IMG_THL}{IMG_THC}<span class="forumlink">{L_FORUM}</span>{IMG_THR_ALT}<table class="forumlinenb" width="100%" cellspacing="0" cellpadding="0">
<tr><td> </td></tr>
</table>{IMG_TFL}{IMG_TFC}{IMG_TFR}
</div>
<tr>
<th nowrap="nowrap"> {L_FORUM} </th>
<th width="120" colspan="2"> {L_TOPICS} / {L_POSTS} </th>
<th width="180"> {L_LASTPOST} </th>
</tr>
FIND
<!-- BEGIN tablefoot -->
</table>{IMG_TFL}{IMG_TFC}{IMG_TFR}
</div>
<!-- END tablefoot -->
<!-- END catrow -->
REPLACE WITH
<!-- END catrow -->
</table>{IMG_TFL}{IMG_TFC}{IMG_TFR}