Thanks for the responses, guys. It's always reassuring to hear that people out there understand. Gender stuff has always been an absolute fascination of mine. I'd have probably studied it in college if I'd had the chance. Didn't ever think back in the day that I might be questioning my own gender someday! Amazing how the addition or subtraction of a single letter from "he" to "she" makes all the difference in the world... both in how you see yourself, and how others see you.
*head spins*