Help Completley stuck here NEARLY DONE IT

Right lets start, I want to list 2 forums (thread starters) (xx,xx) on a new page
now im puzzled probably miles out


1 php file named topp.php & 1 template named topp
=============================================

<?php


error_reporting(7);

$templatesused = "topp";

require('./global.php');

$postsresult = mysql_query("SELECT COUNT(*) AS count,postuserid,postusername FROM thread WHERE forumid IN (xx,xx) GROUP BY postuserid ORDER BY count DESC LIMIT $maxposters;") or die("Unable to complete query");
while ($topposters = mysql_fetch_array($postsresult)):
if (($counter++ % 2) != 0) {
$backcolor="{firstaltcolor}";
$bgclass="alt1";
} else {
$backcolor = "{secondaltcolor}";
$bgclass="alt2";
}

eval("dooutput(\"".gettemplate("topp")."\");");
endwhile;
?>
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any help appreciated