Maybe I'm wrong, but I think Omegawulf has the script working except that he does not have his user's folders shared.

Your examples for NT/2000 should work fine, but for the Windows 9x clients the /HOME will not work if the folder is not shared.
He must share the folders for Win9x clients to be able to map to it.
Then if they are shared you don't need to do anything in the script for NT/2000 as the home folder will be automatically mapped to the given drive in User Manager. The Windows 9x clients will still need to be told to map the home folder via the logon script though.