I was struggling with a friend’s laptop that refused point blank to even detect the wireless network I knew was up and running. It turns out that there’s a button on the laptop itself that needs to be pressed before wireless access is enabled. I guess it’s to save battery life, or something. XP doesn’t seem to know about it and continually reports no wireless networks detected by the built-in device, but everything springs to life once the button is pressed. New one on me.