How do I .....

I've just set-up a PunBB forum on my website and am well happy with it! The only thing I want to do is get rid of the title (for example the very first line on this page that says 'PunBB.org Forums'). I want to do this so I can put a picture banner in its place. In forums hosted by 'MyPunBB' there is a TPL Editor that can be used to get rid of the title here but there isn't that option when you host your own forum. I'm assuming that you can get rid of it by altering one of the php scripts but I don't know which one, and even then which lines. You have to be careful as the title is also used for the title of the browser window at the top of the screen. I'm sure there is a way to do this. Can anyone help me out? What files need altering? Which lines?

Cheers.