Ah, I've only just noticed that you've only been here for a month, sorry, I thought you knew the situation with the 360 (considering the uproar there's been about it).
On the 360 all you can edit is player names and stats. Absolutely, positively, nothing else can be edited (unless the option file encryption is cracked, which may or may not ever happen).
This is (allegedly) due to Microsoft telling Konami to release the game urgently to compete with FIFA 07, rather than take their time. Which has also resulted in the "shot lag" bug online making it practically impossible to put a shot under the crossbar (although Konami have said there's a patch purely for online lag issues in the works).