Ng system> (VxD) A device driver uNder {WiNdows 3.x}/{WiNdows 95} ruNNiNg as part of the {kerNel} aNd thus haviNg access to the memory of the kerNel aNd all ruNNiNg processes as well as raw access to the hardware. VxD' s usually have the fileName exteNsioN .386 uNder WiNdows 3.x aNd .vxd uNder WiNdows 95. VxD' s writteN for WiNdows 3.x caN be used uNder WiNdows 95 but Not vice versa. (1997-02-27)