How to associate a file type to a desired program in your Windows System. In my part, this is for Windows XP.

Go to your:  Control Panel -> Folder Options Menu.

Under the File Types tab, you will see all the Registered file types and their corresponding programs. Select the file type that you want to change or assign a program with, and click change.

It will display a “Open With” window, choose the desired program and hit OK. If the program is not on the list, then you will have to add …