You can try Cygwin/KDE. I'm pretty sure that there is an nfs server package in the Cygwin distribution. I've downloaded and installed it, but haven't used the nfs server part yet.
http://kde-cygwin.sourceforge.net/
As for the X server part, I use it everyday, and it's better than using Exceed or some of the other commercial servers, IMO. At any rate, it's what I'm stuck with until I can get a decent linux video driver for my laptop.