There are over 200 different wrestling related wallpapers (largest collection anywhere) on the WWF Champs website that are available in .jpg and .gif format (to keep the filesize and download times low). There are a few ways to use these images as your desktop wallpaper. The simplest way is to click on the thumbnail of the image you would like (see the Thumbnail Index), and then right-click on the image and select "Set as Wallpaper". Your browser will automatically set the image as your background.
If you would like to save these images for later use, click on the thumbnail of the image you would like (see the Thumbnail Index), and then right-click on the image and select "Save Image As" or "Save Picture As" (depending on your browser). Once you have saved them on your computer, you can view them (offline) with a browser and install them as in the above procedure. If you have a program which handles wallpapers or images, you may also be able to select them from there.
Again, for most users the best way would probably be to set the image as your wallpaper directly through the browser. In any case, I hope you enjoy these wallpapers! I will add more in the future.