Sound issues with online audio chat

[Hunter]

Hi, I have this annoying problem where if I try to have an audio chat using AIM, MSN messenger, Skype online phone service, or anything similar, I get a very loud staticy sound that comes and goes.  It varies in duration but typically it will be on for a minute or two then gone for a minute or two.  When it is gone audio works properly (I can hear the other person)

Audio works fine on my computer for normal sounds, music, games, or anything else.

Any ideas on what could be causing this?  Could it be a driver issue?  

Thanks!

[pcwizard]

Are you near a hands free phone or mobile?
Near your speakers?
Near your router?

They all can cause interference, try changing the channel on any wireless mice/keyboards.

Try removing all unnecessary devices connected to your system to rule them out as well.

[patio]

To my knowledge static cannot be caused by faulty/corrupt drivers...this is more than likely a hardware issue.
Re-check all your physical connections and or try another mike.

patio.  

[Hunter]

Hi, thanks for the replys.  

I usually have my cell phone on my desk, but turning it off had no effect on my problem, and I don't have a wireless mouse or keyboard.  The main thing that makes me think it's not an interference issue is that when the problem occurs (very loud, high volume crackling static), the volume indicator for MSN messenger, AIM, etc. shows max volume.  So the software knows when it's happening.  

The timing of the sound also confuses me.  Everything will be fine for a minute or so, then it goes away and everything operates fine.  And like I said, my sound always works fine for everything else besides voice over internet applications.  

Another thing is that the other person can hear me through my webcam microphone whether I am having this sound trouble or not.

Thanks again for the help!