ScreenCapture is the easiest way to make a screenshot or videoshot and do what you want.
Define any key on your keyboard as a shortcut key ScreenCapture/Screen2Video. Your image/video will appear in your favorite program like MsPaint or Windows Media Player.
Since Paint, make a partial selection, add text, then save, print or send your screen image via email very easily.
Define your Screen2Paint Key and your Screen2Video Key and just use it for create PrintScreen or VideoScreen.
Define your picture editor and your video player to use with capture