Windows 95b/c, 98, 98SE, & 2000 driver for the Umax Astra 3400 and Astra 3450. This is the Vistascan v3.75u software plus the v3.82 updater. After downloading, double-click the file to start the extraction program. Accept the default unzip folder and click the UNZIP button. vs375u.exe is the driver... install it first then install the v3.82 updater file. This driver may also work on the 1220u, 2000u, 2100u, and 2200 usb but I haven't tested it.