How to set a Background Picture: 

Windows 95/98/2000:

1- Click on the desired Link.
2- A "Save as" Window will appear, Select "Save file as", 
3- Write down where you saved.
4- Right Click on the Desktop and/or go to 
    Start>Settings>Control Pane>Display..
5- Select "Background" Tab.
6- Click on "Browse".
7- Find the file you saved.
8- Click on "Open".
9- Click on "OK".

Apple Macintosh:

1- Click on the desired Link.
2- A "Save as" Window will appear, Select "Save file as", 
3- Write down where you saved.
4- Go to: 
     Apple Menu>Control Panel> Appearance
5- Select "Desktop" Tab.
6- Click on "Place Picture".
7- Find the file you saved.
8- Click on "Choose".
9- Click on "Set Desktop".
10- Close all windows.