An easy way to set these pictures as your background is to save them in your "My Pictures" folder. Then in the My Pictures window you can use the Picture Tasks on the left, or right click on the file to 'Save as background'.
For the 'Royale' theme, open the .zip file and extract the file. Then go to your desktop, right click and select 'Properties'. Go to the 'Themes' tab and select 'Royale' from the dropdown list. Choose 'ok'.
Download Center: Desktop Backgrounds for Windows
Vielen Dank an Stan für diesen Hinweis!