I've used computers all my life. I've been an IT at a company with 50 people. I've scoured the forums. It should not be this hard to figure out how to play a custom map on multiplayer with a buddy. Can somebody please tell me HTF I play the earth map on multiplayer? It's completely unacceptable that I can't seem to play map pack nor custom maps on multiplayer. Am I missing something here?!?!?