I've been trying to get Splinter Cell Chaos Theory running without the DVD/CD.
So far Starforce has won
I've tried everything incliding SF Nightmare, sfcure, and other things - none of them work for me.
Oh I know, I have to say a prayer to the game gods before attempting this - I missed that step.
Anyhow, nothing has worked for me.
I give up.
SF Nightmare froze my computer, gave me a BSOD and is general a dangerous program in my opinion - high chance of messing up your computer. I would strongly advise people to do a backup before attempting this. I've heard of some horror stories.