MrHappyCheese wrote If your thinking of hosting for your retail and other friends etc, then your going to need the latest update for mw2 (tu8) installed ( [ Register or Signin to view external links. ] . Now go ahead and put all of the files in that .rar into your mw2 directory. (Use WinRAR to read .rar files.) Next boot mw2 and go to system link. Change the settings to whatever you want just be sure that xbox live unlocks is enabled. Now start the game and connect to your retail via system link. Now infect your retail with your jtag. Now go to host a private on your retail and invite all friends, etc.