smbclient

I've been playing with smb and was curious how you would find the NetBIOS
name of a PC with smbclient (or any other way). I can connect to a PC
(even one not on my same class network) as long as I know the NetBIOS
name. Ex: smbclient -I 10.1.1.1 -L nameofcomputer. I don't have WINS
running and windows PC's don't have DNS entries here. I guess finding the
name of a computer with a specific IP might be hard then but couln't you
still list the WORKGROUP PC's like opening up Network Neighborhood in
windows?

Don