I totally agree with everything stated here so far. There are recovery places that could probably recover that drive, but they are expensive.
If the drive spins up (or perhaps even if it does nothing at all) it MAY be the logic board. That IS a (delicately!) replacable part. It must be sourced from an absolute identical drive, though. (not just same model/interface, but exactly same model, capacity, edition, etc...) eBay would probably be your friend in finding an identical drive.
Once you get the drive up, back it up to a new drive as the very first thing you do. :-)
