Stardock.com
is a program that helps you organize your desktop and can hide your icons when they are not in use.

your desktop by creating shaded areas which become movable and sizable containers for your icons. Double click blank spaces on your desktop and all your fences will fade out, and back.
"It wasn't five minutes after installing Fences that I realized I'd be using it for the rest of my computing life. It's that good." - PC World
 
Configure a "default" fence for all new icons
Automatically organize icons into fences by file type, name, etc.
Sort icons in fences by date, type, size, name, times used, etc.
Have fences that appear faded out until mouseovered
System Requirements
Requires: Windows 7, Windows Vista, or Windows XP
32-bit and 64-bit Windows 7 and Vista are supported.

In a non-commercial, home environment.

Create an unlimited number of Fence areas on your desktop
Quickly hide/show your desktop icons with a double-click
   
Patent Pending
Customize the color and opacity of your fences

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