I think you need to exercise a little care when regging these. The product in question in these threads is "Windows Vista", so emphasising the "Vista" part of that can in many cases mean very little. For a reference point, try thinking about substituting "98", "2000", "ME", "XP" etc. for "Vista" in your proposed registration and see how much sense it makes, or how much sense it will probably make when the product becomes mainstream. Just my 2c...