Dilema need some help
 

Well i thought i could use some target practice with the silenced pistol, so i started a new game i had fun roaming through normandy sniping nazis. then i saved and exited the game when i loaded it i went to enter god and it said u haft to enter like '+set cheats 1' so i did that and it asked me to define +set.....Is there anyway I can run a saved game with cheats so i can silenced pistol snipe nazis?????????