you'll probably have better luck searching for high rez, or atleast upclose pictures of a Scale model of the AT-At.. There are out there, just takes some finiding.. But alot of people have build a plastic replica of this, and are very proud of it so post all their hard labor intensive work opn the web to show otehrs..

That's what i would look for anyway...who knows, you migh tluck up on some good pictures of the Model used in the Movies, on display somewhere or something...

G