So there is a way to get the halo 2 dlc onto an xbox 360 so at least we can do LAN over XBC or something. I made a youtube video about it, and I'm working on a blog post that gets really in depth on how to do it... so here's the youtube link: http://www.youtube.com/watch?v=5W7_sz6_nIo sorry about the volume... I was working with a really poor microphone. Hopefully in the future I can fix that. Also, in this video I am assuming that you already own the maps and just can't access them... I really am not trying to push people to do anything illegal. I just want to enjoy Halo 2 as much as possible before online is gone for good, and the more, the merrier!