Look for "Broadway Extras" in the left hand menu. The last link under that heading should say "Your Settings". Click on that. Once the new page loads scroll down until you see your avatar. Next to it should be a link that says "Upload New Photo".
Hope that is a bit easier to follow. Just had to figure out the same thing myself recently.
Thanks! I don't know why I didn't see it ten minutes ago.
I love the pup too. I snapped it at work one day. It's owner, a very busy (read: demanding) woman was asking all kinds of questions and wanted this and wanted that and the dog was like, "Forget her". Their moods were so opposite, I had to snap a picture.
My new picture was much more appropriate, I think.