I live where there's no mosque near.
I don't quite understand conversion, but as far as tolerance, this is what I could find:
http://en.wikipedia.org/wiki/Mukhannathun
It seems to state, in my interpretation, that so long as you pray, you will be tolerated, but not necessarily accepted. But again, that's simply my interpretation...I don't understand Islam and probably never will. Some of the concepts seem incomprehensible to me.
My interpretation at least on the Wikipedia article is that trans* woman are accepted whereas those who do so for fun eg drag queens are not, also, keep in mind that while Iran is actually very fair in its treatment of trans women in particular e.g. State funded transition. it is not as kind to trans men.
The degree of acceptance probably depend on which country you are in.
With no mosque near you I think that would be difficult. Putting transgender aside, a cornerstone of any religion is community, and that is often found at a Church, Temple or Mosque. But I am not muslim, and maybe there are ways.
I'm in the US.
This website has live chat (http://www.chatislamonline.org/en/) with people knowledgeable about Islam, you can ask them about being trans there, although like others said above, an Iranian fatwa stated that medically transitioning is okay as a cure for homosexuality. Just remember, Iran is shia'a and Sunni's don't follow the same fatwas.
To convent, you only need to recite the shahada (La ilah illa Allah, Muhammad rasoolu Allah -- There is no God but God and Muhammad is his Prophet). This is usually done in front of other Muslims, however you do not need to be in the mosque to say it, and you can even say it on your own if its done with conviction.
Have you tried googling "mosques near me"? I live in the middle of the Bible belt and found four in my general area. And as for acceptance, just like any religion it has many interpretations, and so it all depends on who you ask.
I would think as with any religion, you will find those who support you and others who will treat you with nothing but intolerance. In my opinion faith is so much more and so much more important then going to services. I would say that you don't need anyone to tell you are Muslim it is in the way you choose to have faith.