If the case is too old buying a small ide drive would be the way to go since some older models didn't run sata drives without a controller card added in. The specifications for that model will show what will run while you won't need a large drive to run a beater case for the basics. $52.99 plus S&H takes away a WD 160gb ide drive seen at http://www.newegg.com/Product/Product.aspx?Item=N82E16822144203