Automatic Climate control computer

[aeciepli@undergrad.math.uwaterloo.ca (Avi Cieplinski)]

Where can i find the "programmer" or computer that controls the automatic
climate control. As I posted before, mine seems to be going kind of crazy,
since it only blows the A/C out the top vents, not the face vents. This
makes it very inefficientand it doesn't cool much else than the dashboard.
is this the normal behaviour, or is there something wrong? 
I want to try and check the connections and/or replace the unit.

If people could tell me where it is located and how their climate control
behaves, it would sure make my summer a lot cooler! Thanks.

        -Avi