problem with running Call Of Duty 5

My friend bought the original game and he gave it 2 me 2 install it with a different CD Key.
I installed it without any problam, and then when i click on the singleplayer/multiplater 2 enter the game so it shows a black screen like its gonna work and then it goes out and tells me:
“call of duty(R): world at war campaign/coop has stopped working”
and in the past we did the same thing but with COD4 and it didnt do any problams
does someone knows whats the problem?
Answer #1
How about posting in the right section?
Answer #2
wrong section but I think you might need the no-cd crack
Answer #3
Use NoCD crack and remake your key with KEygen. Then you can play with Multiplayer. ALso please notice forum section before post.