samba - Sep 2002 - Using smbclient and nmblookup to send winpopup messages

Hi all,
Has anyone done this? I can't figure out how to get nmblookup to give me 
back the IP of the machine where a given user is logged in to.
(i.e. I log in on the secretaries PC, which has a different IP from my 
usual machine, I will still get my winpopup messages from my linux box)

We don't have a WINS server on our domain controller, we have a 
enterprise-wide WINS server which obviously does not keep track of where a 
user is logged on in our (departmental) domain.

TIA,

================================Greg Vickers
Computer Systems Officer
Student Support and Systems
Teaching and Learning Support Systems, QUT
Kelvin Grove Campus, CRICOS No 00213J

Ph: 07 3864 8276 Fax: 07 3864 5425
Mob: 0416 001 674 SD: x6147