I've used Western Digital Hard Drives and they have a nice utility that transfers your files from the old HD to the new one.
Therefore, you would not have to go through the headache of reinstalling.
Here is their link:
>>> UTILTY: Data Lifeguard for Windows or DOS.
>> Nice case by the way... For the price, you can beat it. A bit high on the shipping & handling.
Compare prices @ http://pricewatch.com