Choose the resolution option above for your monitor.
After image loads in the new window, right-click on the full-size image and select "Set As Wallpaper"
Mac OS:
Click on the resolution option above for your monitor.
After image loads in the new window, save the full-size image to your hard drive. Click and hold over the image-then select "Save This Image As " and save the image to your hard drive.
Open your Appearances Control Panel and select the desktop tab.
Click "Place Picture", locate and select the image you just downloaded.