yeah you can play backups and emus on disc through the ms dash. but you need evox or something to really get the full use out of your xbox, (to put stuff on the harddrive, ftp, stuff like that) I always make a 1mb bios by using the flashbios in bank 1x2 and the 49XX bios in bank 2x2 that way I can get back to the flashbios easy if I want to update my bios.