PC:
1.Click the desired screen resolution.
2.Right click on the image when it comes up in the browser window.
3.Select
"set as wallpaper"
MAC:
1.Click the desired screen resolution.
2.Click on the image and hold down the mouse button. Select
"download image to disk" to save to hard drive.
3. Go to the Control Panels in the Apple Menu to Appearance or Desktop
Pictures.
4. Find Saved image and and set to desktop