Yay, it worked!
This is what I did in order to post a picture. I didn't even have to register.
I clicked 640 X 480 for message board.
Clicked upload.
Clicked choose and browsed my computer to find the picture I wanted to post.
Clicked Open.
Chose "Hotlink for forum" and Right clicked it, and chose Copy.
Came here, made my post, Right clicked and chose Paste.