I seem to recall a while back Lance making a thread on Avatar guide lines. If I remember correctly he said submissions had to:
-be trains (locos, cars, trams, etc)
-have their forwards facing left
-have an invisible background
-be your own work, or have obtained permission
-must not exceed 204 pixels in width, 30 pixels in height and may not have a total file size greater than 3kb.
I think that was all. just send your avatars to the helpdesk.
peter