The top of that template should look like this:
Code:
$stylevar[htmldoctype]
<html dir="$stylevar[textdirection]" lang="$stylevar[languagecode]">
<head>
$headinclude
<title>$vboptions[bbtitle] - $formtitle</title>
</head>
<body>
$header
$navbar
<!-- main -->
<if condition="$preview">
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<tr>
<td class="tcat">
Preview
</td>
</tr>
<tr>
<td class="alt1">
$preview
</td>
</tr>
</table>
</if>
<br />
<form name="vbform" action="newthread.php" method="post"<if condition="!is_browser('webtv')"> onsubmit="return vB_Editor['$editorid'].prepare_submit(0, $vboptions[postminchars])"</if>>
<input type="hidden" value="$formname" name="do" />
<input type="hidden" value="submit" name="action" />
<input type="hidden" name="posthash" value="$posthash" />
<input type="hidden" name="poststarttime" value="$poststarttime" />
Do you know if you have changed anything in that section? If something is wrong there, that would cause those buttons to work.
The <form> part is what tells those Submit/Reset buttons what to do. Without the <form> section, those buttons won't do anything.