yeah u download a patch from the main site and burn it to a blank cd, then u put it in the 360 and it auto loads it on there..
u can also take the ethernet cable from ur modem and plug it into the back of the 360..sign up for xbox live and get the silver edition, which all it is is a free 30 day trial and it cancels itself..then u can do all the updating from that..
not all xbox games are compatible, but like i said just check the xbox site for the lists cuz they get updated every few months..