femaleWannabe,
If you want to do an aptitude test, I think you should go for GAPAN. All of these aptitude tests only give some indication of what your chances are of becoming a successful pilot. I had a good chat with a GAPAN representative, and he basically said if you are good at computer games, then you will have no problem with pilapt. The lower your hours, the better you are likely to do as you will "play the game" instead of "fly the plane". If you are determined, work hard, and have the right good attitude, then you have every chance of success.
Good luck!
captwannnabe