春樹:
1. are you particulary looking for an immigration law firm in Taiwan?
2. If your mother is a citizen, can she apply for you?
3. Is your step father also in Taiwan?
4. Do you have a vague how long it would take for your immigrant visa to be processed? Because of your age, it might take a while. =) No offense.
http://travel.state.gov/visa/frvi/bulletin/bulletin_2150.html