Just under {vb:raw poll}, Use a conditional like the green part
Code:
<div id="above_postlist" class="above_postlist">
<vb:if condition="$show['largereplybutton']">
<vb:if condition="$thread['forumid'] == 100">
<a href="YOUR NEW URL HERE" class="newcontent_textcontrol" id="newreplylink_top"><vb:if condition="$show['closethread']"><span>+</span> {vb:rawphrase reply_to_thread}<vb:else />{vb:rawphrase closed_thread}</vb:if></a>
<vb:else />
<a href="{vb:raw $vboptions.vbforum_url}{vb:if "$vboptions['vbforum_url']", '/', ''}newreply.php?{vb:raw session.sessionurl}p={vb:raw LASTPOSTID}&noquote=1" class="newcontent_textcontrol" id="newreplylink_top"><vb:if condition="$show['closethread']"><span>+</span> {vb:rawphrase reply_to_thread}<vb:else />{vb:rawphrase closed_thread}</vb:if></a>
</vb:if>
<img style="display:none" id="progress_newreplylink_top" src="{vb:stylevar imgdir_misc}/progress.gif" alt="" />
</vb:if>
Then about half way down the SHOWTHREAD template see "<div id="below_postlist" ....." and just below that do the same thing