Hey welcome to the club, couple pointers for ya, 1) Post issues in the correct forum, it'll get better visability there. This should be in the 1992-1999 forum
2.) Turn your caps lock off when you post, it'* annoying, and also concidered "shouting". 3.) Put the yr and trim level of your car in the signiture area of your profile
Now, onto your problem.
Sounds like your air mix actuator door is shot. I dunno how mechanically inclined you are, but this is possible to fix yourself, but it'* pretty agonizing. Other wise, if the dealer wants $1,200 to fix it, try out a local shop, not a dealer, the price to fix would prolly be half of the dealer price.
We've had a few ppl around here fix their own before, and if that'* the route you wanna go, I'm sure they'll see this and chime in