Taking a snapshot of the computer screen is very simple and no, you don’t need a digital camera!
Mac: Hold down COMMAND+SHIFT and press 3. This will take a snapshot of the entire screen and the image will save to the desktop. Then you can simply attach that image to the e-mail.
Win: Press the “Print Screen” or “PrtScr” button on your keyboard. This will copy the image onto the Windows clipboard. Now open a paint program of your choice. If you don’t have a specific paint program, you can simply go to: Start - Programs - Accessories - Paint Once Paint (or the paint program of your choice) is open, press CTRL-V to paste the image from the clipboard into Paint. Now just save the image as a JPG file and you can attach that JPG file to the e-mail.