Quiz with number scoring

hello everyone,
this is my first post here. I have been watching this site for a long time and have found so many things useful. I am doing a small quiz and need some help doing it. I am a total art person but do understand flash/actionscript from an intermediate level.

I have a quiz with a couple of questions, each question having 2 answers. If you are correct in your answer your score goes up +1 and if you are wrong it goes down -1. At the end of the quiz I would like to display the total score, which is can be either in the positive (example +4) or negative (example -4)…Thanks guys…