Click User CP (control panel) in the Navigation Bar at the top of the page (you must be logged in). Then click Edit Avatar in the left-hand column.

You can use an avatar from our collection or upload one of your own.

Does that help?

And don't feel like an idiot... our Bulletin Board software doesn't make it very easy to figure some of this stuff out... and, we haven't really done anything to help make it easier... but, an upcoming upgrade has a lot of really cool features and looks like it will make everything more user-friendly.