They are optimized for 600x800 resolution, but may be stretched a little larger for those of you with larger (ie. 1024x768) resolutions. Even at larger resolutions, the quality is reasonably high.
Show everyone you're a true Rover! Download one today!
(To use: Click the wallpaper thumbnail of your choice (above) - the wallpaper will open in a new window. Right click the image once loaded and select "Set as Wallpaper". Make sure that your wallpaper display option (right click desktop, select "Properties" then select "Wallpaper" options) is set to "Stretch"...)