well about the blue tooth, i think the blue tooth card is a little (square inch) card on top of the mother board right behind the PCI card fan, also check the label on below the clear plastic cover, it has the serial numbers and such, and there is a bluetooth id (on mine), i thought you only got the bluetooth antanna if it came with bluetooth, so maybe you did.
the feet on the drive... i don't know were you can get different ones, there have been alot of people talking about this