There is no 3D support for Nvidia, unless you put yourself in the same situation with proprietary drivers again. The day Nvidia decides to stop supporting your hardware a few years from now you can never upgrade your system again.
Not good. If you're shopping for a laptop, go with Intel graphics. It's supposed to be much improved with Sandy Bridge anyway. The newest AMD/ATI chips are said to get decent free drivers some say, but I wouldn't take that chance right now.