As far as I understand it, you can just go to your User Control Panel (CP) and select "Edit Profile". Then type whatever you like in the "Title" designated area up to 25 characters. I'm not sure if Paulo changed the restriction on number of posts until the option is available, but I think I remember him doing so.

Anyhow, here's a big welcome from somebody that's been on the forum for a short period of time. Make use of the Search button on the forums, it'll save you a lot of trouble. You could have even just browsed through the subjects on this forum and found something close to what you were looking for. But, hey, I'm not one to tell you how to do things.