I have one major suggestion: "the the Bleep down, and think about what you are saying"
based on the way that your post reads you are frantic about this, and that means that one of two things is going on:
either you are wanting to escape from your currently reality by drasticly changing yourself (I've been there, and I know that college can be a really emotionally disturbed place), but if this is the case then most colleges in the United States offer counseling to their students, and in many cases both public, and private institutions (in preparation for the new healthcare laws are offering free or subsidized health services (including therapy) to students. I suggest that you look into this, also if you contact your locale LBGTQ community center they can actually get you in touch with a mental health professional (maybe even in your local area) some of which willing to work with low-income persons on a sliding scale basis, (sometimes the younger you are the less you might have to pay. period) this is actually how I found my first therapist, but I had to pay because of my age, and the area that I lived in
the other possibility that I am seeing in your post is that you are exhibiting an extreme want to emulate those that you wish to interact with (the thought pattern of "if I have similar physical characteristics to girls then they will accept me more") the truth of the matter is I personally have had more negative reactions from females then I have from males in the general public. if this is the case then I would again suggest that you seek a mental health professional, as you are exhibiting signs of a very bad emotional state, and you don't want to be making irreversible decisions without at least talking to someone about it.
At the very least if you have a male friend who you think will understand (or at the very least not tell everyone in the world) talk to him about your feelings. the part of feeling that you can't relate to girls (sexually). the other possibility is to get one of these female "friends" you mention and do the same (you may never be able to sleep with her, but she might be willing to help you with the whole confidence thing which sounds like more of your issue then anything.)
please think about what you are proposing, and approach it with a clear head, and in as calm as state a possible, or you might one day look in the mirror and gasp at what has happened to your body (and not in a good way)