Windows has a utility called Default Programs that allows you to configure or change the default applications associated with specific file extensions. This feature was added to Windows XP through Service Pack 1, and comes default in later versions of Windows. While the Default Programs utility was revamped and made more useful in Windows Vista and 7, a particular feature found in Windows XP edition of the utility was taken away. That was the ability to change the default action when a file with a specific extension was double-clicked in Windows Explorer.