When you double-click an audio or video file, or click a Web link, a default program associated with that file type automatically starts and opens the file. The Set Programs Access and Computer Defaults icon in the Control Panel provides an easy way to change the default program used for specific file types. Types such as .bmp or .jpg, and common activities, such as Web browsing, sending e-mail, playing audio and video files, and using instant messaging. You can also specify which programs are available from the Start menu, the desktop, and other locations. To change default options, you need to have administrator privileges for your computer. The options you set apply to all users on your computer.