Wallpaper
When choosing a wallpaper, it's best to save the image directly to your harddrive. To save an image, right-click on the image and choose "save as". Don't forget where you saved it. It's recommended that you create a central folder for all your wallpapers in your "My Documents" folder so that you can easily locate your saved images later. You might name it something easy, such as "My Wallpaper" and save all your wallpapers to this folder as you download them.
To set the image as your desktop wallpaper do the following:
1.) Right-click on your desktop
2.) Choose "Properties"
3.) Choose "Desktop"
4.) Click the "Browse" button
5.) Find where you saved the image
6.) Select the file
7.) Click "Open"
8.) Click "OK"
If you have Windows XP, you can also find the image in Windows Explorer, then right-click on the image and choose "Set as background". You can save as many wallpapers as you like and change back and forth between them as often as you choose! Have fun with them and enjoy them as long as you like!