[Samba] (no subject)

[In Labore Fructus]

Hello,
I am hoping someone can help me....

I am trying to configure my samba...and the problem is the following:

When I use nmblookup with -B option and Broadcast address it is
impossible to find my samba server (named prova) that is:

# nmblookup -B 10.254.14.127 prova
querying prova on 10.254.14.127
name_query failed to find name prova

If I do the same lookin up to another machine different from my samba
server, then it is ok:
# nmblookup -B 10.254.14.127 my_win_client
querying my_win_client on 10.254.14.127
10.254.14.94 my_win_client<00>

If I make: c:\net view \\prova
there will be : error 1234

And id I do : nbtstat -A 10.254.14.80 (samba server ip)
the  answer is : unknown host

Would some body help me ????