problem using wins client

[Luca Ferrari]

Hi all,
I'm running ubuntu 10.04 and the computer is a network that uses the wins 
server. I installed samba and cifs related stuff, changed the nsswitch.conf so 
that it resolves hosts using (1) file, (2) dns, (3) wins. I edited the smb.conf 
and added the wins server = 1.2.3.4 address of the wins server. However, if I 
do a nmblookup I see the program doing a broadcast query. I tryed then to 
change the name resolv order placing wins at the begin but still doing
nmblookup -d 5 winmachine
I can see that the program sends a broadcast. I then tried 
nmblookup -d 5 -R -U  1.2.3.4 winmachine
and I got a positive correct reply.
So my problems are:
1) how to instrument nmblookup to use the wins server instead of a broadcast 
2) make recursive requests against the server, since the normale request 
(i.e., without -R) is not working.

I'm running samba 3.4.7.

Thanks,
Luca