Hold X+Y+Z until the password screen appears, then enter the following passwords to go to the desired level. Use the d-pad to enter the password. Up = U, Left = L, etc.
At the title screen when the words ''press start button'' are flashing, hold X+Y+Z. The words enter password will appear. Then press left, left, left, left, down, right, right, left, left, down, right, down, left, up, right.
Level select
On the 'Start' screen, hold X+Y+Z, until the password screen appears. Put in Up, Left, Down, Left, Right, Left, Down, Up, Left, Right, Right, Down, Right, Right, Up as a password.