After a little modification, the site now allows for user pictures. Yay!
There is also Gravatar support, so if you use the same e-mail address as your account, you can use that as well (you can put in another address, too).
To set it up, log into the site and click My account on the sidebar. Then the Edit tab. From there you should be able to figure out the rest, it is pretty straightforward.
As it is set up now the pictures are on the profile pages and are shown when you post a comment. So, show me your mug and leave a comment! ^_^