Okay I just got an xbox 360 a couple months ago and just not got xbox live and am trying to play halo reach on xbox live. My question is when I go to Matchmaking what do I set everything to? Because right bellow the big letters "MATCHMAKING" it says "this party is open to friends." I wan't to know how to switch that so I can play with anyone. And one more question is. Below that it says "Players do not have the recommended downloadable content maps." how do I get the content maps to play team slayer?