Can't see server in Windows 98 neighbourhood

[Werner Stocker]

I installed Samba 2.2.5 out of the box from the Linux distribution SuSE
Professional 8.1. The latest patches are installed, as provided by SuSE.

I have the following problem:
I can use file sharing with Windows 2000 SP4 and latest hotfixes. But on
Windows 98 with all updates installed I can't connect to shares and I
can't see even the Samba server. I just get an error message, that
Windows 98 can't find the share itself.

My configuration is as follows:
# Global parameters
[global]
        workgroup = SPEEDY
        netbios name = OMEGA
        encrypt passwords = Yes
        map to guest = Bad User
        null passwords = Yes
        log level = 1
        syslog = 0
        time server = Yes
        unix extensions = Yes
        socket options = SO_KEEPALIVE IPTOS_LOWDELAY TCP_NODELAY
        printcap name = CUPS
        os level = 2
        comment = Initial Drive
        path = /srv/smb/
        browseable = No
        available = No

[Backup]
        comment = Backup Drive
        path = /srv/smb/backup
        valid users = jstocker,wstocker, at users
        read only = No
        force create mode = 0770
        force directory mode = 0770
        browseable = Yes
        available = Yes
        wide links = No

[CDRom]
        comment = CDRom Drive
        path = /srv/smb/cdrom
        valid users = jstocker,wstocker, at users
        read only = No
        force create mode = 0770
        force directory mode = 0770
        browseable = Yes
        copy = Backup
        available = Yes
        wide links = No

[Multimedia]
        comment = Backup Drive
        path = /srv/smb/multimedia
        valid users = jstocker,wstocker, at users
        read only = No
        force create mode = 0770
        force directory mode = 0770
        browseable = Yes
        copy = Backup
        available = Yes
        wide links = No


I tried to find some information on my problem on the Internet but
wasn't lucky. So I'm trying this way.

Thanx for any help
Werner