Originally posted by ghosthunter Yung HDD size depends on you. For me, I had a 15Gig HDD laying around so I used that one. So the real cost is buying a bigger hdd to fit your needs.
BTW, I saw at a store a USB to IDE HDD cable. I dunno how much but if you combine that with their external HDD power supply, you can attach your HDD to your USB 2.0 port without an external case.