Unzip file then copy files to a floppy disk. Run install.exe from floppy. Answer questions (ie where is the windows directory) After program is finished restart windows. Goto ADD NEW HARDWARE let windows search for card and pick card from list of found hardware. Windows will find the installed drivers and will need your Windows CD to copy some files.
This is from an original Floppy install disk from the now defunct MediaVision. I have used it successfully on my Windows 95 system and should work for DOS and W98. Have fun!