Choose between the images and 1024 x 768 or 800 x 600 resolution. Wait until the image has loaded. Now, click with your right mouse button over the image and choose the option "wallpaper". 

 

1024 x 768 800 x 600

1024 x 768 800 x 600

1024 x 768 800 x 600

 

1024 x 768 800 x 600

1024 x 768 800 x 600

1024 x 768 800 x 600

 

1024 x 768 800 x 600

1024 x 768 800 x 600

1024 x 768 800 x 600

 

1024 x 768 800 x 600

1024 x 768 800 x 600

1024 x 768 800 x 600