it_waaznt_me
Coming back to life ..
I havent used Lan Scanner so cant comment on it, but I'd recommend using "Angry IP Scanner" ... You just give a range of IP address to scan it say 10.0.10.1 to 10.0.10.254 and it will scan which of these IP address are active and the host name of the machine associated with the IP. Together with this info you can find out IP address of any machine on your LAN (or WAN).