Search Forums Bt Titles As Default

[RealitYYY]

Want to set a forum so when search forum is accessed it will search by titles and not search posts.
Currently this what we have for this section.

<!-- forum search menu -->
<div class="vbmenu_popup" id="forumsearch_menu" style="display:none">
<form action="search.php" method="post">
<table cellpadding="4" cellspacing="1" border="0">
<tr>
<td class="thead">Search Forums<a name="goto_forumsearch"></a></td>
</tr>
<tr>
<td class="vbmenu_option" title="nohilite">
<input type="hidden" name="s" value="$session[sessionhash]" />
<input type="hidden" name="do" value="process" />
<input type="hidden" name="forumchoice[]" value="10" />
<input type="hidden" name="childforums" value="1" />
<input type="hidden" name="searchdate" value="40" />
<input type="text" class="bginput" name="query" size="20" />$gobutton<br />

</td>
</tr>
<tr>
<td class="vbmenu_option"><a href="search.php?$session[sessionurl]f=12" rel="nofollow">$vbphrase[advanced_search]</a></td>
</tr>
</table>
</form>
</div>
<!-- / forum search menu -->

Think something needs to be added with $titleonlyselected in it.
Need to know what and where to add it...

Thanks.