If you had a browse button to click on in order to go to My Pictures like in other forums, I would be able to submit an avatar. It's the only way I know how to do it.
I think pictures have to be downloaded to something like Photobucket where they are assigned a URL, which can be copied and pasted from there.
With my limited computer knowledge, I have no idea how to do that. I guess I won't be using a photo here. I'm in several Christian Web sites, and this is the ONLY one that has no "browse" button for adding a photo.
Sorry, that is the way I understand it. Of course I'm no computer wizard either.