so i was surfing around the internet for interesting tidbits on xbox 360. i came upon two methods of playing backup games, one of which being a flash of the dvd firmware. so far i see no disadvantage to this method at all, but i have not seen information anywhere on the effect that this will have on my xbox live account. i'm aware that microsoft is nullifying xbox live capibilities on xbox 360s with modchips (the reason that i don't plan to get a chip for mine), but i'm not sure whether it's doing the same for 360s with modded dvd firmware. if i mod my dvd firmware, will i still have xbox live? are there any other advantages/disadvantages to this method? i'd love to be able to back up my games and play them. any information would be great.