In the upper right corner of the screen, click on project journals. There you can create your own and browse others.
Send the pic you want as your avatar to [email protected], Jon will resize it and make it into an avatar. It will be displayed within a few days.
Just for your information...there is a search feature on this board to find answers to questions like this. The button is also in the right corner of the page. You can find threads with pretty much all the answers you will need, such as how to post pictures and the such.