Open the archive with the Windows Explorer or any other archiver. Then, rename the wininst folder to rsstats-0.0.1 and copy it to a convenient location.
Run the RSStats installer from your Windows Explorer and follow the steps.
The installer automatically created an uninstall icon and registered the application in the Windows Registry. Thus, you can either run the RSStats Uninstaller or use Windows' Add/Remove programs
This tool is a commandline tool and the usage is the same in all the supported operating systems. Please continue with the usage documentation.