if you downloaded a reloaded version of modern warfare 3 , like this one ( http://thepiratebay.ee/torrent/6804632/Call_of_Duty_Modern_Warfare_3-RELOADED ), you noticed that multiplayer doesnt work, now i found an easy solution to this problem. these are the files you need to get the multiplayer working. first extract the files from ''tekno mw3 needed files'' to your game directory, and replace the original ones. after that extract the files from ''tekno mw3 2701 public'' to your game directory, and replace the originals. after that run tekno mw3.exe and play sp or mp.