Katie, let me preface this by saying that I have absolutely no animosity towards you, and have as far as I know never posted anything negative about you, and have never made fun of you. And I understand completely what you feel the difference is between gender identity and physical sex (I said "you feel" because I still have not made up my own mind, even after reading a fair amount about it since you started posting as Katie.)
With that intro, I have a serious question. I'll understand if you'd prefer not to answer, but realize that it is a genuine question, not any sort of attempt by me to disrespect you.
My question: Why is your condition not to be considered a psychological disorder? In other words, why is this basketball player not to be considered female, with a delusion (if that's the right word) that makes her consider herself to be male? Why are you not to be considered male, with a delusion that makes you consider yourself to be female?
My current thinking on this is undoubtedly a bit colored from having recently watched Lars and the Real Girl. Good movie, for any who haven't seen it. In that movie, Lars has a delusion which makes him think a manikin is a real girl, and his girlfriend. Out of politeness, and because they can't convince him otherwise, his family and friends all go along with the delusion. From what I read on wikipedia, and as far as it can be trusted, delusions like this really do exist--and friends of the people suffering from delusions really cannot persuade the individuals that their delusions (although obviously and provably false) are not reality.
So, while I am probably willing to call you female out of politeness, how is your situation different than Lars's? From me, on the outside, it looks uncannily similar: your brain is convinced that something provably false (that you are female), is really true.
Apologies if you find this post offensive, but until you can coherently explain the difference between what you are experiencing, and a delusion of the sort that Lars experienced, I suspect there will be very many people (on this board, and elsewhere) who will not be persuaded to your world view.