Cheats
To use the cheats, just goto the Easter Egg menu from the Options menu. The Easter Egg menu will let you add up to 10 codes at a time. As codes are entered, they should be listed in the menu list, and you should also be able to delete them by using the Delete Entry option and your X button.

Note: These cheats can't be saved to the memory card, so you have to enter them each time you reload the game.

Cheats