My daighters father lives in Texas while we are in MI. He is not on the birth certificate but the court has aknowledged him as the father. He has seen her twice in almost three years. Im am getting married in may and he wants to adopt her. He has been in our lives since she was 3mos. Old and she knows only as daddy. Her bio father wants to sign off and my fiancé wants to adopt we just don't know where to start to make this happen.

You start with an attorney, who will prepare the paper work for him to sign over his rights ( normally not valid till the actual adoptoin goes though) and files that along with the adoption paperwork to the court.

Not up on every state, many will require you be married first and nomally married for a year, but some allow it to be only a long term relationship so a call to your attorney should clear that issue