My bro has installed a slave drive on his windows box. He can see it in Device Manager, which can tell it's a 160Gb drive, and he's been able to format it too. (He's not switching drives, he's still got Windows running fine on his Master drive, he's simply adding a slave. ) He can't see it listed as Drive E: (after his DVD-drive) in Explorer. There's got to be one step left that we've missed.