On call of duty black ops the first one I can't play in nuketown multiplayer. I need help ASAP?

This is for xbox 360 or:This is for xbox 360or:Firstly is it a legal copy of the game ? Most Games on Xbox won't work in multiplayer if it isn't a leg

This is for xbox 360

or:This is for xbox 360

or:Firstly is it a legal copy of the game ? Most Games on Xbox won't work in multiplayer if it isn't a legal copy.

Tags:360,multiplayer,