But first, some propaganda:
Jing is a free screen-capture service that allows you to make graphic images from your computer screen and modify those images to include text boxes, arrows, and the like. Jing also allows you to record screen casts: a "movie" of your keyboard and mouse movements across your screen. Think of the how-to directions and video possibilities!
You can save your images to your computer for printing or for upload to the web, or you can park your images/videos on the Jing website--which means you do not need to monopolize your own online "space" with your saved graphics/movies. Did I mention that this is a free service?
Jing's directions are fairly friendly and easy to follow. If you're interested, please go to
www.jingproject.com to download the free software.