I actually went the other way and bought a MyBook, cracking bit of kit, sits by the PC and I fill it with all my pics etc, plugs into the USB 2 though I used it on USB one, but its a bit slow on pic transfer that way. It is recognised as another hard drive, great thing is if you ever need to move files from one PC to another, simply unplug, take it across and plug it in
Home edition is sata, the price shown is the huge expensive one, check the other drive sizes for lower prices or the likes of Amazon or Ebay...oh and you can daisy chain them too......... mines about 6 inches by 6 inches by 2 inches in size and looks cool.. powers up with C and shuts down with it too....... you could put operating system on a small HD I suppose then all your programmes on one of these,
see
http://www.westerndigital.com/en/pro...sp?driveid=357
http://www.westerndigital.com/en/pro...ndex.asp?cat=8
Or you could get a hot swappable HD housing which plugs into the pc case like a DVD drive, you then plug a HD into that, thought about this next, have a drive with games on and basic windows, one with finances and one with work etc, then simply plug and play........ no worry about being online and your finances being vunerable etc, just swop drives out...........