Even if you could run it on Windows 8, there is a possibility that it isn't compatible with Windows 8.1 OS. You can try to install it using the compatibility troubleshooter. To do that, swipe from the top right corner of the screen, in the search bar type 'run program' and open the Run programs made for previous versions of Windows service. From there just follow the instruction provided. Be aware that this application was discontinued. This means that the developer doesn't offer support for it anymore.