If you use the Microsoft Distributed File System (DFS) in a narrow way, you can simulate Netware's MAP ROOT.
If the users home directories are in a folder called Users, you can set the Users share as the root of the DFS. You will then be able to issue a
net use <Drive:> \\<DFSserver>\Users\UserName1 even though Users is the share point.
You can also use the \\<DFSserver>\Users\UserName1 format to map drives from within Explorer.
You must have SP3 (or later) installed on all Windows NT machines for this to work.
Do NOT set Users as a Leaf in a DFS tree, as a bug in DFS will prevent you from accessing the DFS root.