Snipping Tool is an easy yet very practical screen capture tool. However, many users of Windows 7 do not even realize its existence.
To access the Snipping Tool, press your Windows button (bottom left corner), type "Snipping" in the "Search programs and files" box. The Snipping Tool shows on list, click on it to run.
Sometimes, though rare, users were not able to search the program. If this happens, you may create a desktop icon link to your C:\WINDOWS\SYSTEM32\SnippingTool.exe
Note that Snipping Tool is only available to Windows 7 Home Premium or higher versions.