1.00.00.0003 (1 Oct 2004) 1.00.00.0003 (2004-10-01) via .inf
Search All CASIO USB MIDI Drivers
9x & XP USB MIDI interface driver for the Casio CTK-800 Keyboard. This driver isn't available anywhere except from the installation CD. It looks like it should work with Windows 98/ME but that hasn't been tested.