Problems with BF1942

[TheDarkPrince2]

I wanted for my bf a copy so that my original cd is safe. (I destroyed 2 cd's by throwing thee over them ).

So i used alcohol 120% and it worked.

Then my friend bought the game to and he said well i would like a backup to. So i said ok, so he brought his cd and i cloned it from the image what was still on my hd. But when he uses the cd the game doen;st start. It jsut doens't do a thing.

What is up?

Are there solutions or crack the work with multiplayer? (live tested)