Action Replay Code:
POKE 8871,173 - Lives
On the title screen, before it flips to High Score table, push Joystick UP, DOWN, LEFT, RIGHT, RIGHT, LEFT, DOWN, UP. The screen will flash and start game with Inf. Lives.
For disk user. After type 'LOAD "*",8,1', press 'SHIFT LOCK' and release when level one has loaded. Then you have Inf. Lives.