How to take a screen shot
Answer
There are several ways that you can take a screen shot of the desktop.
Windows Vista/XP/Windows 7:
1. On your keyboard you should have the button "Print Screen". What this allows you to do is to take snapshot of the the desktop and put it in the computer clipboard. To paste it in a word document you will open the Word document application and right click on your mouse and click paste or for keyboard shortcut Ctrl+V
2. Open Microsoft Word 2007/2010 and on the ribbon bar click the Insert tab and click "Screenshot". You will then select whatever area you wish to make a screensot and word will automatically import the image into the word document.
Mac Computer:
1. Take a screen shot on a Mac computer you will use the keyboard shortcut Command(
)+Shift+3. Highlight whatever area you wish to make a screen shot and after you select your object the computer will automatically save a copy to your desktop.
All these question are answered by real COM Library staff, so we can only answer if we're open. 
Using the keyboard shortcut Command(⌘)+Shift+3 will take a screenshot of the entire screen. Using the keyboard shortcut Command(⌘)+Shift+4 will give you the crosshairs to make a selection. Simply click and drag over the area of the screen you want to make into a screenshot. As mentioned, either method will generate a png file of your selection automatically and be saved to the desktop. By default the file name will start with "Screen shot" followed by the date and time.