With the smaller logo ones, or even the box thumbnails, these are best seen as tiled. Right-click on the image and select "Set As Wallpaper". Go to your wallpaper properties (right-click on the desktop and select Properties) and select as tiled. Note that the wallpaper is stored in your Windows folder under the name of BROWSER-NAME-Wallpaper. There it can be renamed into something more identifiable.
For the full screen wallpapers, unfortunately server space restrictions has forced me to move these to another location. Click the link below to go to my "Warriors Goodies", where you find them amongst the other goodies.