I think I did it.

Here is another way of implementing this postbit tweak,
which keeps the link aligned in the top-right corner, regardless of whether there's
a post subject. I'm attaching an image that shows the alignment.
Look for this in the postbit template.
<smallfont>$post[icon] <b>$post[title]</b></smallfont>
And replace it with this.
<!-- ==================================== -->
<!-- START - Direct Links To Posts Within A Thread ---
http://www.vbulletintemplates.com/mo...=&threadid=384 -->
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td align="left" valign="top"><smallfont>$post[icon]<b>$post[title]</b></smallfont>
</td>
<td align="right" valign="top"><smallfont><a href="showthread.php?s=&threadid=$post[threadid]#post$post[postid]"><img src="images/path/to/button_link.gif" border="0" alt="Link to Post"></a></smallfont>
</td>
</tr>
</table>
<!-- STOP - Direct Links To Posts Within A Thread
<!-- ==================================== -->