[Scott MacVicar]

PHP Code:

//connect to database
mysql_connect("localhost", "YOURUSERNAME", "YOURPASS");
mysql_select_db("YOURFORUMSDATABASE");
//select thread information
$query=mysql_query("SELECT * FROM thread ORDER by replycount DESC LIMIT 5");
while($pop=mysql_fetch_array($query)) {
$popular.="<a href=\"http://forums.site.com/showthread.php?s=&threadid=$pop[threadid]\">$pop[title]</a><br>";
}
mysql_close(); 


Use $popular list the top 5 threads with a line break seperating them adjust as you wish.