Delete the file c:\program files\aardvark\aarkthk.dll, then run the Aardvark uninstaller from the Windows 2k/XP driver folder you downloaded. Then delete the C:\Program Files\Aardvark directory. This will remove the drivers, and upon reboot, it should auto-detect the card. Point it to where your Aardvark Win2k and XP drivers are located.