It looks like nvidia may be enabling Vsync after all in the next beta release
I was under the impression that it wasnt possible but looks like there sorting it
http://blogs.nvidia.com/developers/2007/03/vsync_and_direc.html

I was under the impression that it wasnt possible but looks like there sorting it
I have some good news.
We are working to enable forcing Vsync for DirectX applications under Vista. It will be in our Control Panel. We intend to have it available in the next Beta driver we release on NVIDIA.com, ETA in about 1 more week or so.
http://blogs.nvidia.com/developers/2007/03/vsync_and_direc.html
