Thanks to everyone for all the help so far. I got the external enclosure, but no dice.
In terms of finding a circuit board, how would I go about doing that? The model number of the drive is ST31000340AS, and I bought it at Newegg, but they don't sell it anymore. On the board it says the following: "100468979 J C906GJXY". Is that the board revision? Also, if I buy a new drive with that same board, can I use the board and get the data off the current drive, replace the board in the new drive, and use the new drive?