when GTA4 came out, i chose to get it for the PS3. (at the time, i liked the look of the PS3 version better, and i didn't know that "exclusive DLC" would be anything worth playing - hell, it could have been funny hat packs for nico to wear.) so now i'm looking to play the DLC packs. if i were to get the 360 version, could i use someone else's save file to catch me up? i don't want to replay the game.