Like Shelly I also feel in between genders. My body is male, but I have some more feminine features. My personality is androgynous--I have both typically masculine and typically feminine behavioral traits and emotions. Behavior and emotions are as much social as physical. I suppose that one of the reasons I like to dress en femme is to be able to give some physical expression to the feelings that I have. In that sense, when I put on a skirt I bring out the woman in me. But whether I am wearing pants or a skirt I am the same person. That person is neither purely male nor female, but is a bit of both.
Etymologically the terms "crossdresser" and "tramsvestite" mean the same thing. "Transvestite" is just the Latinized version. The connotations of the terms have come to be somewhat different, largely due (as Deb points out) to the psychological association between transvestitism and sexual fetishes.
