You can put it in the same table if you want:
HTML Code:
<table cellpadding="0" cellspacing="0" border="0" width="100%" style="margin-top:$stylevar[margin_3px_fix]px">
<tr valign="top">
<td class="smallfont"><a href="newreply.php?$session[sessionurl]do=newreply&noquote=1&p=$LASTPOSTID" rel="nofollow"><if condition="$show['closethread']"><img src="$stylevar[imgdir_button]/reply.gif" alt="$vbphrase[reply]" border="0" /><else /><img src="$stylevar[imgdir_button]/threadclosed.gif" alt="$vbphrase[closed_thread]" border="0" /></if></a></td>
<td class="smallfont"><a href="newthread.php?$session[sessionurl]do=newthread&f=$foruminfo[forumid]" rel="nofollow"><img src="$stylevar[imgdir_button]/newthread.gif" alt="$vbphrase[post_new_thread]" border="0" /></a></td>
<td class="smallfont"><a href="search.php?$session[sessionurl]do=getnew" accesskey="2">$vbphrase[new_posts_nav]</a></td>
</tr>
</table>
That puts it last. Or you could move the <td> to put it first - whichever you like. You may also want to play with the alignment in the columns (align="left"), or not, it's up to you.