If it is something that fits on the screen, then do a screen capture and you can save it in a variety of image file types.
I'm not sure what it is for Windows, but if you are using a Mac, it's Command-Shift-3 (for whole screen) and Command-Shift-4 (t select certain area of screen).
I think for Windows, it copies it onto your clipboard and then you can paste it into any program and then save it as the appropriate file type.
Do a Google search for more info...
Evan