Download instructions Macintosh Screensaver Click on the size wallpaper you wish to download, the image will load into a new window. Select 'Save As...' from the file menu and save the image to your hard drive. Installation instructions Macintosh Screensaver Open 'System Preferences' from the Apple Menu and select 'Desktop & Screensaver'. Click 'Choose Folder' to locate the wallpaper, click on the wallpaper to install it as your Desktop. Close Window