There is also a verse in the New Testament that states the following: "There is neither Jew nor Greek, slave nor free man, male nor female, for you are all one in Christ Jesus." [Galatians 3:28] I take this to mean that God really doesn't care what gender you are.
In my case, the verse that really rung true for me personally was 2 Corinthians 12. In it, Paul talks about a "thorn in the flesh" that, although he prayed for God to take away from him, God would not, telling him "My grace is sufficient for you." So this, to me, is what my transsexualism is like. It is something that, no matter how much I prayed, no matter how much I wished I could be cured of, I couldn't be. But it's okay. God's grace is sufficient for me. What He cares about is not my gender identity, but my heart... loving Him with all of my heart, soul, mind, and strength, and loving my neighbor as myself. And I truly believe that as long as I have mercy on others, and show unconditional love and forgiveness to them, that He will do the same for me.
That's my take on it. And yes, I am still a Christian, despite doing something that most Christians would consider to be an abomination. But honestly, to me, it feels like I'm embracing the way that God made me, and not fighting it anymore.