How do I find a good dentist?

I would go with a dentist recommended by a close friend, as they are more likely to know you and if their dentist would be good for you. Try to bring someone in with you, a familiar face might help you relax before you go in for your drilling.
Most dentist will be understanding and probably have training about people who may have phobias with the dentist chair, if you make this known to them I am sure they will do everything to help you have a pleasant experience.