samba - Sep 2000 - any windows nt from my local network cannot get the lists from samba wins server

Any windows nt from my local network cannot get the lists from my linux wins
server.When any win nt. (configured for workgroup P16) tries to enter to
workgroup (P16)  it get the following error:

P16 is not accessible.

The account is not authorized to login from this station.

the result is that it cannot get the list with local computers.
I don't use any NT domain on my network and I want all computers to be in
workgroup P16.
Please tell me what seems to be the trouble.
On the server I use Samba 2.0.7.
The smb.conf file should say everything about my network.
This is the content of my smb.conf file:

[global]
        workgroup = P16
        netbios name = SERVER
        server string = Internet Server
        interfaces = 127.0.0.1/24 192.168.10.1/24  192.168.11.1/24
192.168.12.1/24 192.168.13.1/2
        bind interfaces only = Yes
        security = SHARE
        announce as = NT Server
        announce version = 4.2 
        name resolve order = wins bcast
        load printers = No
        os level = 99
        preferred master = Yes
        domain master = No
        wins proxy = Yes  
        wins support = Yes
        remote announce = 192.168.10.255/P16 192.168.11.255/P16
192.168.12.255/P16 192.168.13.255/P16
        remote browse sync = 192.168.10.255 192.168.11.255 192.168.12.255
192.168.13.255
        guest ok = Yes
        hosts allow = 192.168. 127.
        guest account = nobody
[homes]
        comment = Home Directories
        valid users = adiz cata sdan
        writeable = Yes
        browseable = No

[incoming]
        comment = Put your files here
        path = /home/ftp/incoming/   
        writeable = Yes

Thanks,
 
Daniel Ser
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