Okay, like right now my screen has firefox open and my itunes window is also open. It's a bit smaller so I can see all of my itunes window and part of my firefox window. But when I press the keyboard shortcut nothing happens. My issue is what if I had a lot of windows open and wanted to get back to my "clean" desktop fast. Isn't there a keyboard shortcut to do this? I'm sorry I forgot to mention that, I'm running snow leopard.