Originally Posted by nekrosoft13
Install 7 hp with no key, after install key from upgrade version will not work, so then you have to start the setup again, and then do upgrade from win7 hp (key-less) to windows 7 hp.
I don't really understand what you mean by that.
I already pre-ordered Windows 7 HP... can I actually use it or is it worthless to me if I'm using Vista Ultimate?
If I have to do a clean install that's ok, but if there's any chance it won't work, I'm going to cancel my preorder.