So, for anyone familliar with Steam and Call of Duty Modern Warfare 2, i need some help. When i installed CODMW2, it stopped my steam in-game friends, community, all that stuff from working. it stopped it for all my other games too. i tried looking aroung everywhere and i cant find a solution... it started to work once out of the blue but when i restarted the game it didnt work again. the same thing happened to my friend when he installed it too but now he has his working again and he didnt know what happeded either. im running XP and hes running win.7 so thats not the problem... HELP! i wana play with my friends but i cant! btw it is checked "on". im not a nub like that.