You're better off asking here

http://uk.gamespot.com/xbox360/action/halo3/forum.html?om_act=convert&om_clk=tabs&tag=tabs;forums

I would add you but I've got to get a replacement 360 at the end of next week, then I'll be without live for another couple weeks. If I see you around after that I'll look you up.

London here, looking forward to Halo 3 launch.