Ok, first of all I think you have to use the .gif. I don't think it will let you use .jpg for an avatar.
Click "my profile"
Click "View/update profile"
Click "select a different avatar image"
paste your link in the Use Custom URL window
For this avatar
I used...
code:
http://forum.shrapnelgames.com/newuploads/1025221949.gif
click "Set URL"
click "Select this Avatar"
click "Update Profile"
Go back to the forum and make a post. You might not see it till your next post.
Geoschmo
Edit: apparently you can use the .jpg, cause I see Gandalph got it to work. Hehe, looks like you are going to be the only one without that Avatar AZtrocities. 
[ June 28, 2002, 02:35: Message edited by: geoschmo ]