Jason Paddock pointed me to this, and this may be a better/easier solution for making screen capture videos. Jing is easy, but the file format is Flash. If you want to upload your video to YouTube for hosting so that you can embed it in your Google Site, you'll have a problem -- Flash is not supported on YouTube. You can convert SWF to AVI easily (
http://www.freeswfconverter.com) but if you use Cam Studio you can skip that step. Thank you Jason.
Speaking of YouTube, that seems to play on more devices than some of the other video container gadgets that you can embed your video with on your Google Site. One I've been using is called Flash Wrapper (by Mori79) but videos don't display correctly when my site is viewed with certain devices (like my Android tablet). YouTube is probably a better solution, and Cam Studio is an easier way to get your screen capture videos uploaded to YouTube.