If you want to look all pretty on the boards or just be a bit distinct go ahead and change your avatar.

First think you need is a small photo in jpg/gif format. Something along the lines of 75 pixels wide and 100 pixels tall. You can use any picture put if it is too big it will look scrunched up.

Once you have your photo head over to your personal preferences and upload it at the bottom. It should replace the generic graphic you see there and on all the boards.