Re: Squeeking, Rattling & Creaking!!
squeaks - upper wishbone bushes knackered - spray them with some silicone spray for a temp fix
rattles - its an alfa
knocking - lower wishbone bushes failed - replace the wishbone (you best off doing uppers at same time along with the drop links) look about £500 for both front sides done. sorry you could always check the bolts are secure on the suspension components, i had one work lose, thing it was the lower droplink bolt, and it knocked like mad.
as for rear rattles, i had similar issue on mine, sounded like rear seat, was actually a damaged rear suspension arm, it had been bashed at some point, about £25 and half an hours labour for that one! it could also be exhaust bracket related as these expand once there warm and therfore would stop any rattling! have a look under the car when its cold.