I'm not sure if it's the belts or if it's the pulleys.
But I'm pretty sure it's one of the two.
http://www.youtube.com/watch?v=R7_isdExoSI
There's the video, I don't know what's wrong with it but it does that squeaky sound when the car's first started in the morning or when it's cold at night, it only lasts for about 10 seconds max at night, and I think it's the pulleys because once they've been turning for those 10 seconds it goes away and I don't hear the sound again.
Any ideas?