// hey, i wonder how can i do that with mod_Rewrite:
www.xpogames.com/online_games/Shooting_Games/7,1.html?order_by=1

//right now my rewrite rule is: 
RewriteRule ^online_games/([^/]+)/([0-9]+),([0-9]+)\.html$ index.php?pagid=613&categoryurl=$1&cid=$2&page=$3 [L,NC,QSA]
// i want that ill be able in some cases to add this extra var (order_by=[number])  ... ideas how to do it?