Mayyim Hayyim, Boston's community mikveh, recently published on its blog two postings that discussed a recent conversion to Judaism of a pre-op mtf: by the rabbi who sponsored her conversion http://mayyimhayyimblog.com/2011/11/16/learning-in-partnership/ (http://mayyimhayyimblog.com/2011/11/16/learning-in-partnership/) and by the mikveh guide who witnessed her immersion http://mayyimhayyimblog.com/2011/11/23/reflections-on-a-special-conversion/ (http://mayyimhayyimblog.com/2011/11/23/reflections-on-a-special-conversion/).
Hey! That's where I had my mikvah for my conversion! ;D