I just got my A/C charged yesterday morning. It worked fine all las summer with no problems. Now I notice some kid of ratteling noise coming from the front end of the car in a low gear or idle while the A/C isn't on. As soon as I turn thr A/C on, the noise goes away. Again, it does sound like its coming from the pully area of the motor. Does anyone think they might know what might be causing this noise now?

First thing I would look at is are you idler pulleys lubed. I had this problem on another car kind of a clicking rattle at idle and low speeds when the air compressor engages it put tension on the belt and the rattle stopped turned the AC off the rattle came back. I identified the rattling idler by spraying WD 40 at each one when it stopped I lubed it with a 90w oil has been quiet since.