David said:
Yeah but most likely what you are trying to ascertain will not help you
with his problem.
There's plenty of web pages around with primers and help about wireless.
http://www.skyprod.net/pub/HowTo/WXPSP2WC/WXP SP2 Wireless Connections V3d.html
There's even a GUI that lists available networks.
http://www.skyprod.net/pub/HowTo/WXPSP2WC/WXP SP2 Wireless Connections V3d_html_m30c3c36e.png
Wifi can be controlled by Wireless Zero Config, built into Windows.
Or with a custom panel provided in the Wifi installer. So even if
WZC is not driving your wireless, the manufacturer utility might
have available networks listed.
And software like NetStumbler, can give pictures of what's
out there as well. There's even references in here, to other
software that lists available networks.
http://en.wikipedia.org/wiki/NetStumbler
An "available" network, isn't necessarily a "useful" network.
Many problems can still present themselves. Collect all the
error messages, Google'em, and who knows what you'd find.
Wifi shouldn't be that obscure a topic, when it comes
to finding web pages.
Paul