0) Make sure you have Windows 7 Enterprise or Ultimate. The others won’t work.
1) Add the “Services for NFS” feature throguh the Program and Features thing in Control Panel
2) run something like:
mount -o anon \192.168.1.101\mnt h:
where h: is the drive letter the mount will be mounted to. Pretty awesome. This should probably work for directories as well. More here.