Ok, let's forget about everything for now
and let's try Steve's method once again. You said you successfully uninstalled old files right? Once you done that, remove the stick from usb port and reinstall the driver. But this time install from downloaded file, not from CD. Once you unzipped "LW143_driv.zip", just run "setup.exe" in "utility" folder and that should install all necessary files including driver files for LW143. Now, don't put the stick back in yet and reboot the pc. When you rebooted back to windows, do you see WLAN icon showing in your task tray? If you can see that then I think your installation of the new driver is successfull. If you can't see that then just put the stick back in and when windows asks you for a missing file, browse to this file folder(you must unzip it with my name). There are all necessary files in there I think so this time hopefully the process will finish on it's own. If all fails, bad luck, but I'm afraid it's time for you to reinstall windows