[Lynne]

It is in the SHOWTHREAD template. You need to find the area at the bottom that starts with (this is 3.6, your's may be slightly different):

<!-- controls below postbits -->
<table cellpadding="0" cellspacing="0" border="0" width="100%">
<tr valign="top">

The basic format of that table is:

<table>
<tr>
<if reply><td>Reply Button</td></if>
<if navigation><td>Navigation</td></if>
</tr>
</table>

Change it to:

<table>
<tr><td>
<if reply>Reply Button</if>
&nbsp;  <!-- non-breaking space between the two, or a br if you want -->
<if navigation>Navigation</if>
</td>
</tr>
</table>