The files will automatically download to your hard drive.

The "All in One" file contains all the driver files.  Unzip the files to your hard disk and then run "setup.exe" to start the driver installation.

The "Disk based" files are meant to be unzipped to floppies (or your hard disk) then run "setup.exe" from the first disk to install the driver.

"ZIP" files can be unzipped using any UNZIP application or this simplified version of pkuzip.exe