hey guys, i'm a new member here and need some help with my 88 civic dx. i don't know much about cars, so please forgive my ignorance.

my problem is that i can't seem to get the car to blow cool air from it's vents. the temp control knob doesn't do anything. the AC is no good. i can live with this. what i can't live with is feeling heat from the vents in the middle of the summer! i had the heating unit looked at a few years ago and was told the whole thing is messed up--i can't remember the details. (they did manage to break my glove box in the process, though)

so bottom line is: how can i lessen the output of heat into my car? is there something i can check for? a broken seal, something? i use this car for basic transportation and don't want to put much money into it. any help is much appreciated.