hey iam here because my dad is slow with todays games but still wants to play, all he really wants to play though is Mario Bros. for NES and frogger and the simple stuff like that, so i need help i have no idea what emulator is or does, i have been told via xbox live a emulator is what i need to play these games so what emulator do i need and how do i put the games on it and last are those games FREE thanks