Looking for WiFi software....

Here at home, I have 3 PC's. One is hard wired to the router, the wife's laptop and my PC are both wireless. We both connect fine for the most part, but I'm picking up 3 other signals (sometimes as many as 5 if the conditions are just right). What I'm wondering, is there any software that can show the general direction from where these signals are originating? One of 'em is an unsecured network and if I could find out where it's coming from, maybe I could suggest using WEP/WPA to these folks.... and I'm just curious to see which one of my neighbors has decided to name his network/router "The Nut Hut" (????)... any program names, links, or ideas will be appreciated. THANX!

hd2k

 

Maybe give netstumbler a try, there is a graph for signal strength, so you can tak a laptop out and wonder around & watch the signal strength. Or thinkgeek.com has the wispy.
http://www.thinkgeek.com/gadgets/electronic/80ce/