Once you have verified which files and file types that the end users work with regularly, you will need to locate them. Files may be saved to a single folder or scattered across a drive. A good starting point for finding files types to include is to look at the registered file types on the computer.
To find the registered file types on a computer running Windows 7 or Windows 8
Click Start. Open Control Panel, click Control Panel Home, and click Programs.
Click Default Programs, and click Associate a file type or protocol with a program.
On this screen, the registered file types are displayed.