Windows 8 Shortcut - Win+PrtScrn
Windows Key + PrintScreen: Screen capture
I've long used the SHIFT-ALT-PRINTSCREEN technique to capture screen shots in Windows XP thru 7.
But in Windows8 there is a new PrtSc function - when you press WindowsWindows-PrtSc it not only captures the screen but also saves the screen short as a PNG FILE into the Screenshots folder located in your picture library.
The old methods of a simple copy to the clipboard can also be used by pressing the PrtScrn key or Alt-PrtScrn for the active window only.