If you want to spice up your desktop easily in Windows 7 a good method is changing the Theme.
Here we take a look at easily downloading new Themes from Microsoft’s Personalization Gallery.
To download new Themes right-opt for Desktop and select Personalize.
Then under My Themes hit Get more themes online.
Here are examples of the Avatar and Gears of War Themes.
For more information on Themes check out our Learning Windows 7 post onDesktop Themes and Backgrounds.