Okay, let's see if I can help-
Click on "horse pictures" at the top of the index page
Then under "public catagories" click "horse pictures"
Then click "Upload Pic" and there's the start of your personal gallery
All of the photo's that you post in the public section automaticly go in your personal gallery.
Now for your Avatar:
Click on "Profile" at the top of the index page
Scroll down to the bottom
You can upload the picture from you computer or disk or type in the URL and click "Submit" and you have one. I don't think it's been changed, what happened when you tried to put one up?