This video shows you how to easily change the default program associations of any file type. The movie shows you how to change the default program association of a JPEG file, but you can use it with any of the known file types. The first thing you have to do is right-click the desired file, hover your mouse to Open With and wait until a sub-menu appears. There, click Choose Default Program. Then, choose any other program that you want to open that specific file extension by clicking the Browse button and browsing through PC. That's it! Good Luck!