How To Remove Old Device Drivers from Windows XP and Vista by Britec
Normally, these old hardware drivers remain hidden as the Device Manager displays only the active devices. Using a special command, it is possible to force them into view. What is easy and neat about the whole thing is that the old devices appear grayed out sighting and uninstalling them is just a matter of a keystroke.
So here is the short and easy method to prevent your computer from being bogged down by old driver leftovers. The process is the same for Windows XP and Vista