If you look at the credits, (all the way to the bottom) You'll see the code: right,square,up,triangle,right,square,up,triangle
Submitted By: Zweettooth
Go to the cheat screen and press Down, X, Left, Circle, Down, X, Left, Circle
Go to the cheat screen and press Up, Triangle, Down, X, Up, Triangle, Down, X
Go to the cheat screen and press Left, Square, Up, Triangle, Right, Circle, Down, X
Go to the cheat screen and press Left, Square, Right, Circle, Left, Square, Right, Circle
Go to the cheat screen and press Up, Triangle, Up, Triangle, Up, Triangle, Up, Triangle