mr R

I am relatively new to the forums. I did post questions and received helpful replies. However I must have filled in the form wrongly as my screen-name is visible alongside my actual name which when clicked reveals my e-mail address. What have I done wrong? What goes into the top box "Title" my screen name or the subject of the question being posed? How do I replace my actual name on the right with my screen name which is alongside the subject summary of the posted question?