1. First thing to remember, if you aren't brilliant with computers, is it's really easy to do!
2. Next, left click your mouse on the screen resolution of the picture that you want to install as your desktop wallpaper.
3. You will get a big version of the picture in another browser window.
4. Make sure your mouse pointer is over the large version of the picture, and right click your mouse.
5. You will get a list of options appear - select "Set as Wallpaper" or "Set as Background"
6. All done!

Mac OS

1. Click on your favourite pictures screen resolution and wait for it to load. Then hold the mouse button down so that a menu appears. Netscape users select 'Save this link As...' and Internet Explorer Users select 'Download Link to Disk'. Save the file to your desktop.
2. Move the downloaded wallpaper file (?????.jpg) into your wallpaper directory. First-time users make a directory at the top level of your hard disk called 'Wallpaper' and move it there.
3. Click on the Apple menu, then select 'Control Panels > Desktop Pictures'. A window will appear. On the left-hand side hit the 'Picture' button. On the right-hand side hit the 'Select Picture' button. If you have a 'Remove Picture' button instead of a 'Select Picture' button hit this and your current desktop wallpaper will be removed, the 'Select Picture' button will now appear. A file selector box will appear, choose your wallpapers directory and then the wallpaper file (??????.jpg). Hit open followed by 'Set Desktop'.