Sometimes, there are files which you just do not want anyone else to open. You could always hide it (more secure), or you could do this:

Change the file extension. This way, when someone clicks on it, it will come up with that “Choose program to run” dialog box, and the file will not open.

If you do not know how to do this…

1) You need to enable viewing of file extensions. You can do this by opening any random folder, and going to Tools>Folder Options. Then go under the View tab, and uncheck the “Hide extensions for known file types box”

2)Rename the file, changing the file extension to whatever you want(keep the period). However, be sure to remember the old file extension. Now when you try double clicking, this happens:

That’s it, your done. If you want just do the same this as step one (except recheck the box), to make it so that you can no longer see the file extension. Also, you still can open the file upon double-clicking. However, this can only be done if you double-click, and then choose the program that would normal open the file when it had the correct extension. When doing this, make sure that the “Always open files with this program” box is unchecked. NOTE: Even if this box is unchecked, choosing the correct program to open the file will place this file under “Reccommended Programs”