template - showthread_similarthreadbit
Code:
<td class="alt2" nowrap="nowrap"><span class="smallfont">$simthread[postusername]</span></td>
change to:
Code:
<td class="alt2" nowrap="nowrap"><span class="smallfont"><a href="member.php?$session[sessionurl]u=$simthread[postuserid]">$simthread[postusername]</a></span></td>