They're only selling upgrades for the Pro edition on their website for the time being. So if you already have Windows 7 Pro or Ultimate running in Bootcamp or

They're only selling upgrades for the Pro edition on their website for the time being. So if you already have Windows 7 Pro or Ultimate running in Bootcamp or VMWare, that's where you should be running the upgrade executable. If you're running Windows 7 Home or Home Premium, or don't already have a copy of Windows 7 at all, then what they're selling on their website isn't for you. You'll need to pick it up from a 3rd-party retailer for now. The fine print does suggest that they'll start selling all editions on their website in February. (Maybe they had some sort of agreement with retailers or OEMs?) In shopping around, I've seen the System Builder edition from a local big box retailer for as little as $80.