Are... you.. serious...? *Modgasm* I never played Custom edition, (because I have a mac) but you could mod maps in the regular version by replacing the files for "bloodgulch.map" etc. I did play coldsnap though, it was awesome... My request: get me some Halo: CE for mac somehow Oh the missed out on modding... How about a mech juggling flaming chainsaws? It's for a friend.
Klink, talk to tyler777 on forums.halomods.com if your serious about the Mac CE thing, he and conure have got one going, i believe.