Sex change operations involve:
The actual surgery - The doctor will create a penis. This doctor may be a gynaecologist, but will usually be a urologist.
The hormonal manipulation - This will be in the form of medicines. The medicines will cause the breasts to remain small and facial hair to appear.
The psychological counselling - All sex change patients require counselling. Change from male to female is easier than female to male. You should consult a senior urologist, and ask lots of questions, before going in for the procedure. Make it a point to discuss sexuality and feasibility of intercourse.