Hey whats up? First I want to say congratulations!
I'm actually teaching english overseas now too, I'm in Busan, South Korea. Your making a good (yet very intimidating) choice in teaching overseas. You'll learn alot about yourself and the world.
go to
Dave's ESL Cafe and ask this question in the China forum, there are tons of people there that would be willing to help you out, and I would consider it the best resource available for you at this point since I don't know much about what China has and doesn't have (you may already know of this site)
E-mail me if you want to ask any questions about life overseas, the transition, etc etc., or if you want to hear about my experience:
bpk11@yahoo.com
and dont worry about the shirt and tie, I have to do the same thing. Do worry about the pollution though!