[T3MEDIA]

HELP! Trying to make this search box work.
the link it is supposed to search is http://www.sprnch.com/forums/showthread.php?t=361
here is my code.
I get a invalid specified thread error. you know the drill contact your webmaster ect. ect. what am I doing wrong?

<form action="search.php" method="post">
<div class="smallfont">
<input type="hidden" name="s" value="http://www.sprnch.com/forums/showthread.php?t=361"/><input type="hidden" name="do" value="process" /><input type="hidden" name="searchthread" value="1" /><input type="hidden" name="showposts" value="1" /><input type="hidden" name="searchthreadid" value="361" /><strong>search for a video</strong>:<br />
<input type="text" class="bginput" name="query" size="20" style="width:175px" /> <button name="$gobutton" type="submit">Get it!</button><br />
</div>
</form>