If you go into properties for the WUSB nic you should find a checkbox to "allow Windows to control your wireless connection." Try checking it. If it is checked, uncheck it.
Try either way. Also, do you get a message in your systray about your connection ("Your wireless connection has limited or no connectivity" or something like that)? Click Start->Run and type CMD into the box and hit enter. At the command prompte, type "ipconfig" and see if your wireless adapter had an IP address. You DON'T want to see 0.0.0.0 or 169.x.x.x. SP2 can be a pain with it's wireless security functions. Another thing to try is go to Device Manager and right-click the wusb nic and select "Uninstall." Then unplug the usb nic, reboot, then plug it in and let Windows reinstall the driver.
