Snag-it is an extremely useful piece of software that captures sections of a screen, scrolling windows, menu items, etc. and allows you to fiddle with the images, including call outs, effects etc. I use it all the time, particularly for putting together presentations. If you can find it somewhere and show it on your screen, you can capture it and use it easily and elegantly.
GTDWannabe posted about it today. You can get a fully licensed version of the software for free. Now, it’s a version behind, but it is fully and legally licensed. You can try it out for as long as you want. If you decide to buy the upgrade, the price is half the new purchase price.
You can download (English version) and request a license from TechSmith’s site. I have done everything I’ve ever needed with the version they are now giving away for free, so while I will be evaluating the new version the free version is fully featured and includes most of what a student will ever need.