Windows 7 comes with a nice array of built-in themes but did you know you can download many more official themes from Microsoft?

Go to [url=http://windows.microsoft.com/en-US/windows/downloads/personalize/themes:nkv0y8wi]THIS PAGE[/url:nkv0y8wi] to view and download available themes.

There are 20 themes in all, with titles such as; Beach Sunsets, Birds of Prey, Castles of Europe and Lighthouses.

They are all completely free. To install a theme, just download it, then right-click on the file and choose "Open".