Drake and Josh Cheats (GBA)

At the 'Main' menu enter the following codes at the 'Password' section.

Unlock Level 1-1:Enter 6731  
Unlock Level 1-2:Enter 6165 
Unlock Level 1-3:Enter 7475  
Unlock Level 1-4:Enter 8636  
Unlock Level 2-1:Enter 7716  
Unlock Level 2-2:Enter 5725  
Unlock Level 3-1:Enter 3576  
Unlock Level 3-2:Enter 8285  
Unlock Level 4-1:Enter 7546  
Unlock Level 4-2:Enter 7621  
Unlock Level 4-3:Enter 2875 
Unlock Level 5-1:Enter 5147  
Unlock Level 6-1:Enter 5285  
Unlock Level 6-2:Enter 8273  
Unlock Mini-Game - Cafeteria Panic:Enter 7576 
Unlock Mini-Game - Soda Pop Blues:Enter 5688  
Unlock Final Level (Stage Fright Arcade, ALL Guitars, No Essay Papers):Enter 2548