From Bluefive Software:
EmptyDesk is free easy-to-use windows utility that lets you clear your desktop with just a click on a button.
Need an empty, cleared desktop, no icons showing?
Ever wanted to take a nice screenshot but couldn't, because your desktop is full of icons?
Sometimes you need a screenshot while showing a piece of the computer desktop in the background. Problem: the icons are in the way. You need a clear background. No problem anymore: with EmptyDesk you can easily hide the icons with one button-click (and make them visible again with another button-click). Easy enough!