CUDA is not supported (Nvidia GeForce GTX 285)

I just downloaded Media Coder NT Cuda, but when i launch the program it says that CUDA is not supported on my current system. But i have a Nvidia GeForce GTX 285 graphics card and Windows 7 Ultimate (64-bit). Actually it should work with this graphics card, but it doesn’t!
I hope you can help me.


What driver are you using?

I’m using version 260.99, which is the latest one.