Unlimited lives:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 23858,173 
Invincibility:
Load or reset the game, then execute the following BASIC command before running or restarting the program. 

POKE 6404,173 
Unlimited time:
Load or reset the game, then execute the following BASIC commands before running or restarting the program. 

POKE 1877,60
POKE 1878,7