no worries, once you download the game on Windows, you will need to extract the files out of the zipped folder (if u are not sure how to do this, there are some tutorials on Google) once the files are extracted you should have a new folder with the game and it's content, then open the folder and the game file should have a knight icon, that's what you will want to launch. if you are still having trouble, please feel free to send me a screenshot and I can point you in the right direction.