Choose a wallpaper and screen resolution which best suits your computers display. The standard screen resolution is usually set at 1024x768 pixels, but if you have an older computer you may be using 800x600 pixels.

To check your display settings go to:

1. Start > Settings > Control Panel > Display > Settings > Screen Resolution
2. Or right click on your desktop > Properties > Settings > Screen Resolution

When you have opened the image, right click on the image and 'set as background'. Alternatively, right click on the link and save the image to your computer by clicking on 'save target as'. Then go to your display settings and locate the image to set as your background.