NBA 2K3 Codes -

Unlock the cheat menu:)
Go to the options menu and pick GAMEPLAY. Press and hold + + and push . You will see the CODES selection unlocked in the options menu.

Bonus teams:)
Submit the case sensitive code MEGASTARS to unlock the Sega Sports, Visual Concepts, and Team 2K2 in exhibition and street modes.

Duotone graphics:)
Submit the case sensitive code DUOTONE to have your player in color with all other players in black and white.

Trash in the streets:)
Submit the case sensitive code SPRINGER to see trash in the streets. REMEMBER: This does not work in the gym.