"ZIP" files can be unzipped using any UNZIP application or this simplified version of pkuzip.exe. Unzip the file to a temp directory on your computer then run setup.exe to install the driver.

WIN-95/WIN-NT System Framework
Driver Rev: F (921526 REV: F)
Download 3171 WIN95/NT FW  (2,370k)

WIN System Framework
Driver Rev: A, 1-Disk. (921490 REV: A)
Download 3171 WIN FW Disk 1  (650k)