RCPlanePower :

the little picture is called an "Avatar" you will have to go to my rcu in the menu and then choose "edit options". if you scroll down all the way to the bottom you will find where it says "Avatar" from there you can click for more info, and it will explain everything you need. If you would like a signature or some slogan above your pic, you have to choose "edit profile". You will see all kind of different options there.

that Pilatus Porter by the way is awsome.