haha NFSU is cool coz i have a pearl pink r34 gtr and i chop civics, and i has enkei's on it that arnt dinged!!
back to the real world now....as jmp said you can put in big harddrives then copy the game to your harddrive that you "BUY" and then you can play them without the cd whenever you want... i dont think you need a chip to do this but i could be wrong...