GMC Repair: My heater is on the fritz!! Help!, chevy cavalier, small screws

Question
Okay, I own a 1995, 2.2 liter chevy cavalier. She's a standard and recently  is have weird sounds coming from my dash. When I turn the heat up to warm up the car {Which is useful seeing as temperatures here reach to about -40} it sounds like the "fan" that there somwhere is starting to give out. It has weird wooop woop woop sounds coming from it. Every now and then she'll kick in, but then it sounds like she's not producing as much pressure as she should be. My boyfriend would like to know how to go about replacing it, have any suggestions?

Answer
Hi
Really sounds lik the fan blower motor.
It is located under the passenger side, below the glove box.
It should be a fairly easy fix, ususally just 3 small screws hold in the motor.
I do not have repair info for anything 1997 or older.
Good Luck
PAwl