This is the driver for an external Parallel-port-to-IDE HDD box.
As of this wr OnSpec's own driver-download page is unavailable. (Maintenance ? Gone for good ?)
This and other OnSpec drivers are at www.part2.com/techsupport/drivers.html
You will need WinZip or PKUnzip or something similar to unzip this compressed file.
If you are using this software/device to INSTALL windows, you will need to install the DOS DRIVER (see the above web-site) first, and this Windows driver only AFTER you've installed Windows.