The air conditioner stopped working all of a sudden.

That's the 1st thing you check when it stops cooling-I recommend an AC shop-

Before any recharging is down you have to check the ac pressures.

im not a mechanic or saturn expert or anything but i have a 97 saturn sl2 series i had the same problem i would go to a mechanic and have them recharge it i thought i needed a recharge but according to the mechanic i went to my compressor went out in my car

Thats why you have to always check the pressures first to see if there is enough pressure for the compressir to come on.If there is and the compressor doesnt come on you can check for power to the comoressor.If the compressor does come on then you can see what the pressures are.In you case the pressures were equal the high and low pressures.Meaning the compressor was bad thats the most common reason i have replaced compressors on those cars.Once in a while i come across a bad compressor clutch.