samba - Jul 2004 - problem exploring network from win98

Hi,
if I logon in the domain (samba3 acting as PDC on debian stable) from a
win2kp client (netbios name manually added to the server) with user A, I
see H: in "My computer" it's the user home on the samba server.
When I
go in network resources there are the domain PCs. 

Same procedure but from the win98 client, I don't see H (is the only way
I0ve find is to write net use h: etc... in a logon script) and I can't
browse the domain and see the others PCs... I've got an error if I try
it!
And (on w2kp and w98) I haven't a share command if I right click on a
directory...
This is my smb.conf file:

[global]
        workgroup = UNIVERSE
        netbios name = SATURN
        server string = Samba PDC - Versione %v
        #socket options = TCP_NODELAY IPTOS_LOWDELAY SO_SNDBUF=8192
SO_RCVBUF=8192
 
        os level = 64
        preferred master = yes
        local master = yes
        domain master = yes
 
        security = user
        encrypt passwords = yes
 
        domain logons = yes
        hosts allow = 127.0.0.1 192.168.1.0/255.255.255.0
        add machine script = /usr/sbin/useradd -d /dev/null -g machines
-s /bin/false -M %u
        add user script = /usr/bin/useradd -d /dev/null -g 100 -s
/bin/false -M %u
 
        log file = /var/log/samba/log.%m
        log level = 2
        max log size = 50
 
        logon home = \\%L\%U\.profile
        logon path = \\%L\profiles\%U
        logon drive = H:
        logon script = netlogon.bat
 
[homes]
        comment = Home Directory di ogni utente
        browseable = no
        writable = yes
 
[profiles]
        path = /home/profiles
        writeable = yes
        browseable = no
        create mask = 0600
        directory mask = 0700
 
[netlogon]
        path = /home/netlogon
        read only = yes
        write list = @admin
        browseable = no

someone can help me?
Enrico