Try putting something like this in the postbit:
HTML Code:
<div style="float:right"><tr>
<td align="center" colspan="2">
<if condition="$show['avatar']">
<div align="center">
<a href="member.php?$session[sessionurl]u=$post[userid]"><img src="$post[avatarurl]" $post[avwidth] $post[avheight] alt="<phrase 1="$post[username]">$vbphrase[xs_avatar]</phrase>" border="0" /></a>
</div>
</if>
<div id="postmenu_$post[postid]">
<a class="bigusername" href="member.php?$session[sessionurl]u=$post[userid]">$post[musername]</a>
</div>
<if condition="$post['usertitle']"><div class="smallfont">$post[usertitle]</div></if>
<if condition="$post['rank']"><div class="smallfont">$post[rank]</div></if>
<div class="smallfont">
<if condition="$post['joindate']"><div>$vbphrase[join_date]: $post[joindate]</div></if>
<if condition="$post['field2']"><div>$vbphrase[location_perm]: $post[field2]</div></if>
<if condition="$post['age']"><div>$vbphrase[age]: $post[age]</div></if>
<div>
$vbphrase[posts]: $post[posts]
</div>
<if condition="$show['reputation']"><if condition="$show['reppower']">$vbphrase[reppower]: $post[reppower] </if><div>$post[reputationdisplay]</div></if>
<div>$post[icqicon] $post[aimicon] $post[msnicon] $post[yahooicon]</div>
</div>
</td></tr></div>
Havent tried it, but it should work. You will also want to put it BEFORE the message
HTHs