For
PC:
1. Right click on image
2. Choose "Set as Wallpaper"
For
MacOS 8.x and up:
1. Click and hold on image
2. Choose "Save this image as..." to save image on your hard disk
3. Under the Apple menu open "Control Panel"
4. Grab image and drag it over the Desktop background Icon in
the Control Panel window
5. Click "Set Desktop"
For
MacOS 7.x:
Only desktop patterns can be displayed. Displaying a full picture
requires software programs such as Deskpicture
or Decor.