Transgender is not the same as being transsexual. A transsexual was born one gender and transitions to the other. A transgendered person can be a man who is married to a woman. This man may dress in women's clothing, expressing himself as a woman at times. Gender has its roots in the mind, if you will. The Transgendered person doesn't relate only to the sex they were born into. They may not feel comfortable in identifying with a sexual identity at all. They can see themselves not as a man or woman, just as a human.
Transgendered people have their identity in many facets. A transgendered woman may dress like a man. She may feel a stronger foundation within a suit and tie. She can be gay, straight or bi-sexual. The confinement of a term at all may seem limiting to a transgendered person. Can we just be who we are, not what our sex makes us?