post the code your using for the signature part
template "postbit":
<!-- post #$post[postid] -->
<if condition="$show['spacer']">
$spacer_open
<div style="padding:0px 0px $stylevar[cellpadding]px 0px">
<if condition="!$post['islastshown']"><!-- this is not the last post shown on the page --></if>
</if>
<table class="tborder" id="post$post[postid]" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
<td class="thead" $scrolltothis>
<div class="normal" style="float:$stylevar[right]">
<if condition="$show['postcount']">#<a href="showpost.php?$session[sessionurl]p=$post[postid]&postcount=$post[postcount]" target="new"><strong>$post[postcount]</strong></a> </if>
<if condition="$show['reputationlink']"><a href="#" onclick="return reputation($post[postid])"><img class="inlineimg" src="$stylevar[imgdir_button]/reputation.gif" alt="<phrase 1="$post[username]">$vbphrase[add_to_xs_reputation]</phrase>" border="0" /></a> </if>
<if condition="$show['reportlink']"><a href="report.php?$session[sessionurl]p=$post[postid]"><img class="inlineimg" src="$stylevar[imgdir_button]/report.gif" alt="$vbphrase[report_bad_post]" border="0" /></a> </if>
$post[iplogged]
</div>
<div class="normal">
<!-- status icon and date -->
<a name="post$post[postid]"><img class="inlineimg" src="$stylevar[imgdir_statusicon]/post_$post[statusicon].gif" alt="$post[statustitle]" border="0" /></a>
<if condition="!$show['start_until_end']">
$post[postdate]<if condition="!$show['detailedtime']">, $post[posttime]</if>
<else />
<phrase 1="$post[startdate]" 2="$post[enddate]">$vbphrase[x_until_y]</phrase>
</if>
$post[firstnewinsert]
<!-- / status icon and date -->
</div>
</td>
</tr>
<tr>
<td class="alt2" style="padding:0px">
<!-- user info -->
<table cellpadding="0" cellspacing="$stylevar[cellpadding]" border="0" width="100%">
<tr>
<if condition="$show['avatar']"><td class="alt2"><a href="member.php?$session[sessionurl]u=$post[userid]"><img src="$avatarurl" alt="<phrase 1="$post[username]">$vbphrase[xs_avatar]</phrase>" border="0" /></a></td></if>
<td nowrap="nowrap">
<div id="postmenu_$post[postid]">
<if condition="$show['profile']">
<a class="bigusername" href="member.php?$session[sessionurl]u=$post[userid]">$post[musername]</a>
$post[onlinestatus]
<script type="text/javascript"> vbmenu_register("postmenu_$post[postid]", true); </script>
<else />
$post[musername]
</if>
</div>
<if condition="$post['usertitle']"><div class="smallfont">$post[usertitle]</div></if>
<if condition="$post['rank']"><div class="smallfont">$post[rank]</div></if>
</td>
<td width="100%"> </td>
<td valign="top" nowrap="nowrap">
<div class="smallfont">
<if condition="$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]: $post[posts]
<if condition="$show['reputation']">$post[reputationdisplay]</if>
</div>
<div>$post[icqicon] $post[aimicon] $post[msnicon] $post[yahooicon]</div>
</div>
</td>
</tr>
</table>
<!-- / user info -->
</td>
</tr>
<tr>
<td class="alt1">
<!-- message, attachments, sig -->
<if condition="$show['messageicon'] OR $post['title']">
<!-- icon and title -->
<div class="smallfont">
<if condition="$show['messageicon']"><img class="inlineimg" src="$post[iconpath]" alt="$post[icontitle]" border="0" /></if>
<if condition="$post['title']"><strong>$post[title]</strong></if>
</div>
<hr size="1" style="color:$stylevar[tborder_bgcolor]" />
<!-- / icon and title -->
</if>
<!-- message -->
<div>$post[message]</div>
<!-- / message -->
<if condition="$show['attachments']">
<!-- attachments -->
<div style="padding:$stylevar[cellpadding]px">
<if condition="$show['thumbnailattachment']">
<fieldset class="fieldset">
<legend>$vbphrase[attached_thumbnails]</legend>
<div style="padding:$stylevar[formspacer]px">
$post[thumbnailattachments]
</div>
</fieldset>
</if>
<if condition="$show['imageattachment']">
<fieldset class="fieldset">
<legend>$vbphrase[attached_images]</legend>
<div style="padding:$stylevar[formspacer]px">
$post[imageattachments]
</div>
</fieldset>
</if>
<if condition="$show['imageattachmentlink']">
<fieldset class="fieldset">
<legend>$vbphrase[attached_images]</legend>
<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0">
$post[imageattachmentlinks]
</table>
</fieldset>
</if>
<if condition="$show['otherattachment']">
<fieldset class="fieldset">
<legend>$vbphrase[attached_files]</legend>
<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0">
$post[otherattachments]
</table>
</fieldset>
</if>
<if condition="$show['moderatedattachment']">
<fieldset class="fieldset">
<legend>$vbphrase[attachments_pending_approval]</legend>
<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0">
$post[moderatedattachments]
</table>
</fieldset>
</if>
</div>
<!-- / attachments -->
</if>
<if condition="$post['signature']">
<!-- sig -->
<div>
___________________________<br />
<fieldset><legend>La sign de $post[username]:</legend><table><tr><td>
$post[signature]
</td></tr>
</table></fieldset> </div>
<!-- / sig -->
</if>
<if condition="$show['postedited']">
<!-- edit note -->
<div class="smallfont"> <hr size="1" style="color:$stylevar[tborder_bgcolor]" />
<em>
<phrase 1="$post[edit_username]" 2="$post[edit_date]" 3="$post[edit_time]">$vbphrase[last_edited_by_x_on_y_at_z]</phrase>.
<if condition="$post['edit_reason']">$vbphrase[reason]: $post[edit_reason]</if>
</em>
</div>
<!-- / edit note -->
</if>
<div align="$stylevar[right]">
<!-- controls -->
<if condition="$post['editlink']">
<a href="$post[editlink]"><img src="$stylevar[imgdir_button]/edit.gif" alt="$vbphrase[edit_delete_message]" border="0" /></a>
</if>
<if condition="$post['forwardlink']">
<a href="$post[forwardlink]"><img src="$stylevar[imgdir_button]/forward.gif" alt="$vbphrase[forward_message]" border="0" /></a>
</if>
<if condition="$post['replylink']">
<a href="$post[replylink]"><img src="$stylevar[imgdir_button]/reply_small.gif" alt="$vbphrase[reply_with_quote]" border="0" /></a>
</if>
<if condition="$SHOWQUICKREPLY AND !$show['threadedmode']">
<a href="$post[replylink]" onclick="return qr($post[postid]);"><img src="$stylevar[imgdir_button]/quickreply.gif" alt="$vbphrase[quick_reply_to_this_message]" border="0" /></a>
</if>
<!-- / controls -->
</div>
<!-- message, attachments, sig -->
</td>
</tr>
</table>
<!-- post $post[postid] popup menu -->
<div class="vbmenu_popup" id="postmenu_$post[postid]_menu" style="display:none">
<table cellpadding="4" cellspacing="1" border="0">
<tr>
<td class="thead">$post[username]</td>
</tr>
<if condition="$show['profile']">
<tr><td class="vbmenu_option"><a href="member.php?$session[sessionurl]userid=$post[userid]" target="_blank">$vbphrase[view_public_profile]</a></td></tr>
</if>
<if condition="$show['pmlink']">
<tr><td class="vbmenu_option"><a href="private.php?$session[sessionurl]do=newpm&userid=$post[userid]"><phrase 1="$post[username]">$vbphrase[send_private_message_to_x]</phrase></a></td></tr>
</if>
<if condition="$show['emaillink']">
<tr><td class="vbmenu_option"><a href="sendmessage.php?$session[sessionurl]do=mailmember&u=$post[userid]"><phrase 1="$post[username]">$vbphrase[send_email_to_x]</phrase></a></td></tr>
</if>
<if condition="$show['homepage']">
<tr><td class="vbmenu_option"><a href="$post[homepage]"><phrase 1="$post[username]">$vbphrase[visit_xs_homepage]</phrase></a></td></tr>
</if>
<if condition="$show['search']">
<tr><td class="vbmenu_option"><a href="search.php?$session[sessionurl]do=finduser&userid=$post[userid]"><phrase 1="$post[username]">$vbphrase[find_all_posts_by_x]</phrase></a></td></tr>
</if>
<if condition="$post['userid']">
<tr><td class="vbmenu_option"><a href="profile.php?$session[sessionurl]do=addlist&userlist=buddy&u=$post[userid]"><phrase 1="$post[username]">$vbphrase[add_x_to_buddy_list]</phrase></a></td></tr>
</if>
</table>
</div>
<!-- / post $post[postid] popup menu -->
<if condition="$show['spacer']">
</div>
$spacer_close
</if>
<!-- / post #$post[postid] -->