http://support.steampowered.com/cgi-...p_sid=8QiJKORh
If that doesn't work, you could DL the Vengeance release of the game + updates 1-5 from somewhere. Unfortunately, it's too complicated a crack to be found at gamecopyworld or similar sites...I've never actually seen their crack posted separate from the full 2.5GB dvd. You'd have to reinstall when you wanted to go back to playing online again too.