Edit the postbit template, and change these numbers:
<table bgcolor="{pagebgcolor}" width="{tablewidth}" cellpadding="0" cellspacing="0" border="0"><tr><td width="10"><img width="10" height="1" src="{imagesfolder}/space.gif" alt=""></td><td width="100%"><!-- spacer -->
<table cellpadding="{tableouterborderwidth}" cellspacing="0" border="0" bgcolor="{tablebordercolor}" {tableouterextra} width="{contenttablewidth}" align="center"><tr><td>
<table cellpadding="4" cellspacing="{tableinnerborderwidth}" border="0" {tableinnerextra} width="100%">
<tr>
<td bgcolor="$post" width="[b]175" valign="top" nowrap>
<a name="post$post[postid]"></a>
$post[firstnewinsert]
<normalfont><b>$post[username]</b></normalfont><br>
<smallfont>$post[usertitle]</smallfont><br>
$post[avatar]<p>
<smallfont>Registered: $post[joindate]<br>
Location: $post[field2]<br>
Posts: $post[posts]</smallfont></td>
<td bgcolor="$post[backcolor]" width="100%" valign="top">
<smallfont>$post[icon] <b>$post[title]</b></smallfont>
<p><normalfont>$post[message]</normalfont></p>
$post[attachment]
<p>$post[signature]</p>
<p>$post[editedby]</p>
<p align="right"><smallfont><a href="report.php?s=$session[sessionhash]&postid=$post[postid]">Report this post to a moderator</a> | $post[iplogged]</smallfont></p>
</td>
</tr>
<tr>
<td bgcolor="$post" width="[b]175" height="16" nowrap><smallfont>$post[foldericon]
$post[postdate] <font color="{timecolor}">$post[posttime]</font></smallfont></td>
<td bgcolor="$post[backcolor]" width="100%" valign="middle" height="16">
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr valign="bottom">
<td><smallfont>$onlinestatus
$post[profile] $post[pmlink] $post[useremail] $post[homepage] $post[search] $post[buddy]
<!-- $ post[icqicon] --> <!-- $ post[aimicon] --> <!-- $ post[yahooicon] -->
</smallfont></td>
<td align="right" nowrap><smallfont>
<a href="editpost.php?s=$session[sessionhash]&action=editpost&postid=$post[postid]"><img src="{imagesfolder}/edit.gif" border="0" alt="Edit/Delete Message"></a>
<a href="newreply.php?s=$session[sessionhash]&action=newreply&postid=$post[postid]"><img src="{imagesfolder}/quote.gif" border="0" alt="Reply w/Quote"></a>
</smallfont></td>
</tr>
</table>
</td>
</tr>
</table>
</td></tr></table>
<!-- spacer --></td><td width="10"><img width="10" height="1" src="{imagesfolder}/space.gif" alt=""></td></tr></table>