The doc from http://us2.samba.org/samba/docs/man/Samba-HOWTO-Collection/NetworkBrowsing.html#id2554118 says to make static wins entries, all that has to be done is set the TTL to 0, like this "MADMAN#03" 0 192.168.1.2 66R We are adding to wins.dat a static wins entrie but after a few seconds it dissappears. Our samba version is 3.0.9. Thanks Emilio C.