If the brakes squeek that could be anything, most likely the gasket on the brake pad in contact w/ the caliper on front. The pulsation or rattling in the front could be a warped rotor. Do you drive the car hard and stop fast (racing)
To get that problem fixed, provided it is a warped rotor, wouldn't take long or cost much. A brake shop can throw it on a brake lathe and grind off 6 thousandths of an inch and have you back on the street in less than an hour.