arent there 3 folders in the mod to choose for the pc xbox and ps3?
anways youre gonna need modloader for it to work im not sure bout console (doesnt work for me) put the pc folder in the same folder the modloader is in now open the mw2modder.ini and change mod0=scoutknives to mod0=pc
save it then open loader.exe now go in mw2 alt tab out and press inject (works for alteriwnet might crash sometimes)