NIKKI1221

I have a 2002 and I lowered it about a year ago. I have recently changed my pads and rotors (Sept. 04). I thought the squelling noise I hear everytime I turn my front left wheel was the squeel tab but my brakes are brand new!! What could be causing this noise? My friend suggested it might be my wheel bearings. I want to know what the noise could be and if it has anything to do with me lowering the car?? I will take any help or comments I can get...