What about this?
http://manuals.playstation.net/docum...uputility.html
If the 60GB drive is okay, why can't you install it in the new one, backup the data to an external drive (or whatever), reinstall the 80GB drive and then restore the backup? I've never done it myself, but from perusing a couple of PS3 specific forums, it seems like this is pretty common. The only problem I can see is with the initial installation of the 60GB drive to the new PS3...I don't know if the drives are set up to be swappable like that from one console to another.