[Buddha]

go to modify templates, choose the style you want to change, select postbit templates and then postbit_signature. erase everything in there and insert

<!-- Business Card -->
<table border="0" cellspacing="0" cellpadding="0" bgcolor="#F5F7F8" width="336" height="187">
<tr>
<td colspan="3" height="14"><img src="images/businesscard/top.gif" width="336" height="14"></td>
</tr>
<tr>
<td width="15" height="150"><img src="images/businesscard/left.gif" width="15" height="150"></td>
<td width="304" height="150">
<table width="304" border="0" cellspacing="0" cellpadding="5" height="150">
<tr>
<td width="1" valign="top">$post[avatar]</td>
<td align="center" valign="middle"><normalfont><b>$userinfo[username]</b></normalfont><br>
<smallfont>$userinfo[usertitle]<br>
<br>
<a href="member.php?s=$session[sessionhash]&action=mailform&userid=$userinfo[userid]">E-mail
me</a> | <a href="private.php?s=$session[sessionhash]&action=newmessage&userid=$userinfo[userid]">Send
me a PM</a> </smallfont></td>
</tr>
<tr valign="bottom">
<td colspan="2"><normalfont>$post[signature]</normalfont></td>
</tr>
</table>
</td>
<td width="17" height="150"><img src="images/businesscard/right.gif" width="17" height="150"></td>
</tr>
<tr>
<td colspan="3" height="23"><img src="images/businesscard/bottom.gif" width="336" height="23"></td>
</tr>
</table>
<!-- Business Card -->

now this is the original size... i haven't changed the images at all. it'll be pretty big for a signature. also, you'll want to go into the postbit template and make certain to align the table that holds the signature, so that it's either left or right aligned (depending on how you want it to look in your postbit). also, you'll want to limit the amount of text that can be used for a signature, as well as limit line breaks (carriage returns), as this will disrupt the tables which house the images (the edges) and it won't look right.

you've got a good idea though... interesting.

*edit*
had to correct the avatar info for it to display properly in the postbit. tried it out and it looks pretty tight man. only thing is, it's too big. is getting me thinking about how i want my postbit to look though. hmmm...