I just used an old hard drive i had lying around (used to empty lots of travel agents when the closed down and the cctv systems had harddrives in that i saved from the bin lol) and put it into an enclosure that you can get online for about £30. Worked a treat for me and saved me buying a hardrive built into an enclosure as they were about £150 when i was looking.
Infact ask me nicely and i will have a look if i have anymore drives left and pop you one in the post

So long as 80gig will be enough as i think thats what they were.
P.S i might not have one as had a garage clean out few weeks back. Can have a look if you want they all you would have to do is format it and buy an enclosure