If you try the uninstall, don't worry about new SW at first. Uninstall from Device Manager doesn't delete the driver. What happens is when you reboot it in essence re-binds the driver to nic. Actually (Mac users won't believe this) the best way is to uninstall, reboot with the nic out, reboot again, then insert the nic. If that doesn't work, go into Control Panel->Add/Remove Programs and actually remove the WUSB software. Then reboot and install the software you download.
I know this is a pain. I administer 35 laptops and 5 AP's on top of the 60 desktops and 15 servers. SP2 for XP really caused a bunch of problems. My fellow SysAdmin and I both run Slackware Linux on our main systems here.
