Are you looking for a complete drive, or just the PCB?
A PCB, including firmware transfer, is available here:
http://www.hdd-parts.com/20091010.htmlIf this is your board ...
http://ep.yimg.com/ca/I/yhst-1443758497 ... 60_3865366... then you will need to transfer the 8-pin serial flash memory chip at location U12 from patient to donor. This chip stores unique, drive specific "adaptive" information. The above board supplier includes a "ROM/firmware" transfer service for US$20. Others charge $10. Otherwise, if you are not adept at soldering, your local TV/AV repair shop should be able to do it for you.