To view video content on this site, you need to have QuickTime 5.0.2 or later or Windows Media Player 7 or later installed on your system. You can download them at the links below.
You will be asked to choose video player settings before watching a video on this site. For the optimum user experience, we recommend selecting the High-Speed option for QuickTime. This option offers the best overall video quality, as well as the ability to turn captions on or off while viewing. QuickTime is now available for Windows as well as Mac OS.
If you are having difficulty streaming the high-speed versions of the videos, or if you have a slow or dial-up connection, try changing your video player settings to the Dial-Up option for either QuickTime or Windows Media Player.
Both QuickTime and Windows Media Player files are captioned. PC users may not be able to view captions using the Windows Media Player with the Web browser Firefox. If you use Firefox and would like to view captions, change your video player settings to QuickTime.
You can download and install the latest version of the free QuickTime player for Mac OS or Windows by visiting the Apple Web site at http://www.apple.com/ quicktime/ download/.
You can download the latest version of the free Windows Media Player at http://www.microsoft.com/ windows/ windowsmedia/ mp10/.
To view the interactive features on this site, you will need to have Flash Player 6 or later. Most current browsers have this functionality built in. You can also download Flash at http://www.macromedia.com/ software/ flashplayer/.
To open and print the PDF files, you will need the Adobe Reader. You can download Adobe Reader at http://www.adobe.com/ products/ acrobat/ readermain.html.
This content was last reviewed on November 20, 2006.