This is a complete installation that includes the drivers package and adjustments for the Kensington Orbit or Kensington Turboring. Two very fine products from Kennsington (an ACCO Company). Name a Folder 'Kensington Mouse Works' and download your file there. Then unzip to the same file. Shut down the computer, plug the trackball in and reboot. Drivers shiuld be found automatically and installed. You need to read the simple agreement and agree for the install to continue. Windows 98SE will ask you for the Windows 98 Install disk for file that is needed. Put your disk into the drive and make sure the drive location is correct. It take only a second and your Kensington Orbit or TurboRing will come to life. If you have worn out tracball rubbers I am selling a repair kit available on the Ebay.