OK I havent had time to check this works, but have a go anyway
open index.php, find
// get total posts
add above
PHP Code:
$5views = $DB_site->query('SELECT title FROM forum ORDER BY views DESC LIMIT 5');
while ($5viewstop = mysql_fetch_array($5views)):
++$5viewstop ;
$5viewsname .= "$5viewstop[title], ";
endwhile;
open forumhome template and insert the below were you want it to appear
<marquee>$5viewsname</marquee>