Setting up Services for UNIX NFS Client

Click "Services for UNIX [ local ]"
Set "Computer Name" to localhost
Change "Client for NFS" options if necessary (default works for me)
Click "User Name Mapping"
Select "Use Password and Group files" which bring you to "Configuration" tab.
Set "Password file path and name" to c:\sfu\common\passwd (or somewhere else)
Set "Group file path and name" to c:\sfu\common\group
c:\sfu\common\passwd can be copied from /etc/passwd on the UNIX NFS server. You can delete entries of users you don't need to map. You can do a "cat /etc/passwd | grep ^user > ./passwd" or "ypcat passwd | grep ^user > ./passwd" in a UNIX shell and copy ./passwd to c:\sfu\common\.
c:\sfu\common\group can be copied from /etc/group on the UNIX NFS server. You can delete entries of groups you don't need to map. You can do a "cat /etc/group | grep ^group > ./passwd" or "ypcat group | grep ^group > ./group" in a UNIX shell and copy ./group to c:\sfu\common\.
Select "Maps" tab
Select simple maps.
Set "Windows domain name" to \\hostname. Hostname = name of your computer. \\localhost might work as well.
Click "Show User Maps". Click "List Windows Users" and "List UNIX Users".
Click your windows user name to the left, and your UNIX username to the right, and click "Add".
Set up any group maps that you might need in the same way as above. I don't have any, so it is not needed to access your own files.

Now you should be able to map a network drive, and use \\nfsserver\path\ to map your NFS share. When clicking "OK" and if it is a NFS share and not a SAMBA share, a window should popup with the mapping of the user ID. This user ID should match your UNIX uid on the NFS server (type "id" in a UNIX shell to get it).