Ctrl or Alt Print Screen
Takes a screenshot and puts it on the clipboard. (one does just the window you are in, the other the entire screen, can never remember which).
Then open whatever program you want and ctrl-v or edit paste.
Simple as that.
EDIT:
Actually it\'s so easy I just did it for you:
Interestigly I just found out if you do a ctrl print screen with a dual monitor set up you get a pic of both monitors.
Now if you want it without the watermark, I can\'t help ya.