win98 e winxp autenticando no Ubuntu Server (Samba)

[Fabior9]

Boa tarde

segue configuração do samba para autenticação de maquinas win98 e Xp, no Ubuntu Server 9.10

[global]

## Browsing/Identification ###

   workgroup = tet
   server string = server
   netbios aliases = ubuntu

   keepalive = 40
   read raw = yes
   write raw = yes
   nt acl support = no

   log file = /var/log/samba/log.%m
   max log size = 50
   socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192

   domain logons = yes
   admin users = fabio,administrador
   local master = yes
   os level = 200
   preferred master = yes
   domain master = yes
   dns proxy = no
   time server = no
   passdb backend = tdbsam
   smb passwd file = /etc/samba/passdb.tdb

   logon path =

   wins support = yes
   hosts allow = 192.168.101.1/255.255.255.0
   unix password sync = no
 
   interfaces = eth0 Io

   syslog = 0
   panic action = /usr/share/samba/panic-action %d

   security = user
   announce as = NT server


  encrypt passwords = yes
   lanman auth = yes 
   client lanman auth = yes
   client plaintext auth = yes
   NTLM auth = yes

   map to guest = never
   debug level = 0

   add user script = /usr/sbin/useradd -d /dev/null -g 100 -s /bin/false -m %u
   add machine script = /usr/sbin/adduser -n -r -g machines -c ntmachines -d /dev/null -s /bin/false -M %u
   guest account = nobody

[homes]
   comment = Home Directories
   browseable = no
   read only = yes
   writeable = yes


Tive um baita trabalho pra chegar ate aqui, espero ajudar

Abraço