Setting Desktop Wallpaper
You can load an image as desktop wallpaper, and specify how the image covers the desktop.
To set desktop wallpaper:
Right-click the desktop (not an icon), and select Wallpaper.
The Select Graphic dialog box is displayed.
Click Load to browse for a graphic file, then click Open to select the preferred file.
In Style, select an option:
Center—Centers the graphic on the desktop
Stretch—Stretches the graphic across the desktop
Tile—Repeats the graphic across the desktop
Top-Left—Displays the graphic in the top left corner of the desktop
You can set the desktop wallpaper for the current desktop using the preferences Look and Feel tab.