[Samba] win/linux connect problem

[m.]

hi..
I have samba 2.2.1a on Mandrake 8.1, 2.4.17.  My problem is a user from remote Win2k workstation can't see my shares when he wants to access my PC using my hostname.  When accessing using my ip address, it works..  The error message in W2K is 'This user is not authorized to log in from this station' - or something like that..
Here's a part of my config.  The same (or almost the same) config works on another linux, so I'm desperate with this one..
Thanks in advance for your suggestions.
Michael

[global]
        coding system = ISO-8859-2
        client code page = 852
        workgroup = XXXXX
        netbios name = xxxxxxx
        server string =
        interfaces = 10.10.1.164/24
        security = SHARE
        map to guest = Bad User
        encrypt passwords = yes
        smb passwd file = /etc/samba/smbpasswd
        log level = 3
        log file = /var/log/samba/log.%m
        max log size = 50
        socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
        load printers = No
        printcap name = lpstat
        logon path = \\%L\Profiles\%U
        os level = 33
        preferred master = False
        domain master = False
        printer admin = xxxxxxx
        printing = cups

[doc]
        comment=doc
        path=/mnt/d/share/pub/doc/
        read only=Yes
        guest ok=Yes