Okay my friend is giving me the Zombie map packs for WaW offa' his flash-drive he's going to move them from his flash-drive onto my HDD anyone know if this will work?
Gnome is right. The only thing I can think of involves recovering his gamertag on your 360 and then re-downloading them, though I would think Microsoft has long ago foreseen such attempts and put in ways to prevent them.