Let me guess, your getting BSoD? After a quick google search and looking at it's location on in Windows, my best guess is that it's a chipset driver.
Try going here: http://answers.microsoft.com/en-us/windows/forum/windows_xp-hardware/wlanuhnsys-driver-bad/178b57b6-efa9-4ef6-accc-2db74b15d122?msgId=5ac24a54-cec9-4c3d-afec-ac2e6a5be969
Anyways, welcome to Reborn!