I have been using thai visa center for 4 years now and never disappointed. If you live in BKK they will provide a free messenger service to most areas in BKK.You don't have to leave your home , everything will be taking care of for you. Once you send them copies of your passport via line or email, they will tell you how much it will cost and the rest is history. Now just kick back and relax and wait for them to finish the job.