This tool isn't much more demanding than the Print Screen-to-Microsoft Paint method, but it gives you more control over the details, such as what the screenshot will contain and where it ends up.
ScreenHunter offers three options for screenshots. You can print the whole screen, or instead of cropping the screenshot after it's taken, use a crop-style rectangle to clip out the region you want ahead of time.
Yourscreenshots can be saved as bitmap, JPEG, or GIF files.
For $19.95, ScreenHunter 5.0 Plus offers more capture options. You can get round screenshots, for example, or you can capture movies, DirectX, and screensaver visuals.
A Pro version for $29.95 adds image editing features and even more capture options, including scheduled capture and web capture options that function a bit like "Tivo" for the Web.
--Leigh Anne Jones