I actually just started using an external HDD enclosure I ordered from Newegg. My old desktop system (WAY old) finally gave out so I got a docking station for my laptop, and ordered the enclosure to: 1) be able to wipe my old 250Gb HDD that the OS was installed on, and, 2) to use more permanently with my 1Tb drive I use for data. This is the enclosure I'm using:
http://www.newegg.com/Product/Produc...82E16817153142
If at all possible, use eSATA. That's how I have mine hooked up and it runs great.