I can't seem to map a network drive on one NT 4.0 server with XP Pro. I can ping that server by IP and Name. I can map another server at the same site. When I map with an NT or 98 machine maps fine, not with XP Pro. When I try to map it asks for Username and Password when it doesn't with other server. If I put in username and password and press enter it dissapears for a few seconds and the logon window reappears again with the username and password still there. but no log on. Any help appreaciated on this one.