Level Select
Go to the first level, pause the game, and go to the 'Scrapbook' option. Then, press Left, Up, A, B, Left, Up, A, B, Left, Up, A, B, Up, Up, Up, Up, Up.
0% success rate. 

All Bonus Games
Go to the first level, pause the game, and go to the 'Scrapbook' option. Then, press Left, Up, A, B, Left, Up, A, B, Left, Up, A, B, X, B, X, B, X, B.

Go to: Shrek 2 Info Page | nGaming Home Page.