I have used the screen capture utility SnagIt (from Techsmith) for many years, and I love it. However, there are times, especially when using a different computer, I have a need to do a full or partial screen snapshot. Well, one solution that I found that fits my needs (= free & easy) is called Cropper.
It installs quickly (even on Vista), and allows you to select the size of the screen you wish to capture. The captured snapshot can be saved to your clipboard, as a graphics file to your disk, attached to an email,
Give it a shot. As the man says, “Try it, you’ll like it!”