Here's what you do: Buy an x year old computer (doesn't really matter how old, just make sure the HDD is upgradeable, and that it's not that expensive). Then, buy a 120GB (or whatever, however big you want), and put it in the old comp. Network this comp and your current comp together, make sure to back up every once in a while, and voila: you have a 120GB hard drive that you hardly ever have to worry about: no overheating, no possible virii (or is it viruses? Hm...), and plus, you have another computer! Woohoo!