PC: Right click on image and 'Set as Background' or 'Set as Wallpaper'
MAC OSX: Drag the image onto your desktop. Go to System Preferences. Then go to the Desktop icon and open it. Then drag the image into the well.
MAC OS9: Drag the image onto your desktop. Go to your Control Panel and select Appearance. Click 'set desktop' and choose your new desktop..
About Anthony Horowitz
Anthony's first novel was Enter Frederick K. Bower, published in 1979 when Anthony was just 23. He created Foyle's War and the popular series Midsomer Murders and has also worked on Agatha Christie's Poirot and Murder Most Horrid. Anthony's phenomenally successful series of books about teen superspy Alex Rider have delighted children all over the world, and in 2003, Anthony was delighted to win the Red House Children's Book Award for Skeleton Key as it was voted for entirely by children.