
Right click the wallpaper size you want and choose "Save Target As". Pick a location on your computer to download the file to. e.g. my documents or your windows folder.i.e. somewhere it won't be moved from. Once downloaded, double click the file to open it. Next, right click on the image and choose the "Set as Background " option. The wallpaper should now be set as your desktops background image.
Click the download link for each screen saver and save to a location on your computer. Once downloaded, right-click the saver and choose install. It should now be your default screen saver.