In (Control Panel -> Ease of Access Center -> Set up Mouse Keys) are the settings for Mouse Keys. I have it set to enable Mouse Keys whenever I disable Num Luck. Whenever I press Num Lock for this purpose, there is a very loud beep that goes through my speakers. It is about 3 times louder than anything else I might be listening to. There is a check box in the settings for enabling/disabling a different beep (the one for Left Alt + Left s**t + Num Lock), but not one for just the regular Num Lock. Does anyone know a way to completely disable this beep?