Just adding that you don't need a program to take a screenshot. Just press "print screen" key on the keyboard, open your graphic program and paste the clipboard contents. The screenshot is now there. Crop, resize and save as a .jpg or .gif.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi