It's real easy to tell if the compressor is running on your car. It's that thing on the drivers side of the engine; the bottom one. Has its own fan belt on your car.

Start the engine and see if its turning. Not just the pulley - that turns all the time - but the compressor itself. Look at the front face of the pulley - that's the compressor drive. It should be still with the a/c switched off, and turning with the a/c switched on.

That big metal pipe that runs across the front of the engine, just above the fan is the so-called low side of the a/c system. It should get cold and sweaty when the a/c is operating.

Larry is correct that you may have a mono-vavle problem; it's a common failure on this car. But if you don't have cold air for the first few minutes in the morning - before the engine warms up - then you have other problems too. Frankly, it sounds like you have a massive leak in the a/c system, and it has lost all its refrigerant. I expect you'll find it no longer switches on - the system detects when it is too low on refrigerant to safely run, and the compressor will not engage. My guess is that this is your problem.

- JimY