Difference of CUDA & Forceware Drivers ? whats the difference ?

ok, i just found out about this CUDA thing but i dont get it, is it a new driver, better thna forceware series?
I have a 9600GT , Vista64.
I mostly play games on my PC, but i installed the CUDA drivers, they seem to be the same but i cfant overclock my card with RivaTunner while under CUDA.

Should i go back to ForceWare drivers?

Whats the difference? I use Adobe CS4 very rarely, mostly movies,games, music …

Will CUDA drivers drop my performance in games, and why cant i OC?

CUDA is included in the latest NVIDIA drivers, so unless you want to do calculations on your card, you don’t need to download special CUDA drivers and just use the drivers you normally do.