Can someone explain to me how to join friends in an online game? Just got COD: black ops and so have a few mates. Problem is I can't seem to join them, when they send an invite to me as it will say 'session no longer available' (or something like that). Thing is they are in a game and I can see them there. Should I set up a party? No idea what or how to do it.
+ When I try to join a party it says it can't connect