http://www.hrc.org/your_community/3134_3138.htm?listpage=1

http://www.lambdalegal.org/our-work/states/georgia.html

Looks like your answer is quite unclear.
Finding the lgbt family practice lawyer is going to be the hardest part.

Try asking around with local orginization or group such as the one below.

http://www.megafamilyproject.org/about/index.html

Much luck to you.
kt

::edit::
If I had more time I would look into it for you but check gay.com they seem to have some sources