At the main menu of disc 1, where it says PRESS START, press left, right, up(2), down, circle. If entered correctly you should here a sound. Then go to options, extras and "ART GALLERY" will be selectable. For disc 2 press, up(2), R1(3), square. For disc 3 press, L1, R2, L1, R2, L1, square at the main menu.