My center AC vents are blocked. How do I unblock them? Is there a diagram of the AC unit?

You may want to get your hands on a Chilton or Haynes manual. It will tell you how to unblock your vents. I don't have very much experience with that sort of thing.

I got a haynes manual this weekend. Unfortunately, it doesn't tell me much about where the intake is and the path of the air ducts. All I can gather from it is how to take apart my dash and trim panles. Seems like there is an easier solution.