That's sad to hear.
It might be possible to place this hard drive as a second drive in your re-built computer and use some recovery software to try to access it.
iRecover -
http://www.s2services.com/diskreaderfreeware.htm (third one down) - is a freeware utility that does this.
Of course, if the drive won't turn, you won't be able to get anything. It's worth a try, however, before shelling out any of your hard-earned cash on services like -
http://www.ecodatarecovery.com/