Hi tall cythia,
Is that an anagram? Not sure of your problem. Just click on 'My Controls' at the top right of the screen then 'edit avatar settings' at the bottom left. You can either choose from an avatar from the gallery, point to an avatar stored on another site or upload one of your own. To upload just click on the 'Browse' button and navigate to your stored avatar.
"Your avatar must be no bigger than 150 pixels by 150 pixels in size. Uploaded avatars from your computer must be no larger than 20 KB.
The following file types are allowed: gif .jpeg .jpg .swf .png"
Hope that helps.
cheers
noz