Cannot connect to all folders on server

I use a "NET USE " batch file to map to the shared folders on our server
which is running Windows ME. With XP on the remote computers there was no
problem. I know have vista on one of the remote computers and only some of
the folders will map successfully. Out of a total of 7 shared folders 3 will
map and 4 will not. All the paths and passwords are correct. I would think
that since it would map one of them it should map them all. Nothing has been
altered on the server.
Any help would be appreciated.

Thanks