Save it as an .iwd file and make a folder in your mw2 directory called "Mods". Then use the console command to load the patch from the mods folder. Then map_restart. The command is like 'fs_game mods; 10th lobby' or something. I can't recall the exact command.I am sorry, i am such a noob in this, but is there any tutorials on how to load gsc's with alteriw?