Should be simplicity itself ...
Make a new PHP module, which performs the query and retrieves the top 10 (or however many you like) richest members <?
require_once('./global.php');
global $DB_site;
$result = $DB_site->query("SELECT user.userid as userid, user.username as username, user.money as money FROM " . TABLE_PREFIX ."user as user ORDER BY money LIMIT 10");
while($hoarders = $DB_site->fetch_array($result))
{
$moneybagsbits.= "<tr><td><a href=\"member.php?userid=" . $hoarders['userid'] . "\" title=\"Visit the palace of this rich user\">" . $hoarders['username'] . "</a></td><td>" . $hoarders['money'] . "</td></tr>\n";
}
$moneybags = "<tr><th>Richest User</th><th>Cash</th></tr>\n$moneybagsbits";
eval('$home[$mods[\'modid\']][\'content\'] = "' . fetch_template('adv_portal_moneybags') . '";');
?>
Then make a template called adv_portal_moneybags:
<table align="center" border="0" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" class="tborder"width="100%">
<tr>
<td class="tcat"><span class="smallfont"><strong>$vba_options[portal_blockbullet] Top uCash Holders</strong></span></td>
</tr>
$moneybags
</table>
<br />
Now bear in mind that I know nothing about the structure of the uCash hack - I don't use it - but this theory should work ...
Then u need to install the module the same way you do any of the others ...