On the official website of the developer, there is nothing mentioned about the Metascreen product. In this case, the program is either discontinued, or the developer didn't made its information public. Even if you are purchasing a new computer that runs Windows 8, you can still try to run an old version of the application on it using compatibility features. To do this, swipe from the right side of the screen, in the search bar type Compatibility Troubleshooter and press Enter. From there, you should follow the provided steps.