This is the update for the Casio QV-3000 and QV-8000 USB for Windows2000. I haven't tried it, but I found it while searching for another driver. This came from Casio's web site. An instruction file is included. Hope it helps.
The following files are found inside the driver download file.
|usbqv.inf||2.4 KB||22 Mar 2001|
|qv2kux_1.exe||24.3 KB||22 Mar 2001|
|InternetUSBDLqv.doc||20.0 KB||22 Mar 2001|