[Samba] Unable to solve the problem in setting up PDC for network

[Some One]

Hi Guys,
              Can you please tell me why is this failing to connect

I'am running samba on Freebsd 8.
I've pasted the testparm of samba.

It first gave me unable to connect as a RPC
and now it again gives me error that unknown user or password.

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CAN YOU TELL ME HOW TO SETUP MACHINE ACCOUNTS AND NORMAL SAMBA ACCOUNTS to
connect XP PRO Machines./ IF THERE IS ANY PROBLEM WITH smb.conf?
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server# testparm /usr/local/etc/smb.conf
Load smb config files from /usr/local/etc/smb.conf
Processing section "[homes]"
Processing section "[netlogon]"
Processing section "[Profiles]"
Processing section "[printers]"
Processing section "[tmp]"
Processing section "[public]"
Loaded services file OK.
Server role: ROLE_DOMAIN_PDC
Press enter to see a dump of your service definitions

[global]
    workgroup = INET
    netbios name = INET
    server string = Server
    log file = /var/log/samba/log.%m
    max log size = 50
    add user script = /usr/sbin/useradd %u
    delete user script = /usr/sbin/userdel %u
    add group script = /usr/sbin/groupadd %g
    delete group script = /usr/sbin/groupdel %g
    delete user from group script = /usr/sbin/deluser %u %g
    add machine script = /usr/sbin/adduser -n -g machines -c Machine -d
/dev/null -s /bin/false %u
    logon path = \\%L\Profiles\%U
    domain logons = Yes
    os level = 65
    domain master = Yes
    dns proxy = No
    wins support = Yes
    winbind trusted domains only = Yes

[homes]
    comment = Home Directories
    read only = No
    browseable = No

[netlogon]
    comment = Network Logon Service
    path = /usr/local/samba/lib/netlogon
    guest ok = Yes
    share modes = No

[Profiles]
    path = /usr/local/samba/profiles
    guest ok = Yes
    browseable = No

[printers]
    comment = All Printers
    path = /var/spool/samba
    printable = Yes
    browseable = No

[tmp]
    comment = Temporary file space
    path = /tmp
    read only = No
    guest ok = Yes

[public]
    comment = Public Stuff
    path = /home/samba
    write list = @staff
    read only = No
    guest ok = Yes



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