We've already covered the plethora of Windows 7 versions, starting with the gimpy Starter edition and then running all the way up to Ultimate (which, we can now confirm, will not include a bag of chips). Microsoft's grand scheme is for users to start with what they need and pay to unlock additional functionality, upgrading their way to the top rung of the the Windows 7 ladder. But, it's now coming to light that the company will also allow downgrades -- not to simpler versions of Win 7, but to earlier operating systems like Vista and even XP. Yes, OEM manufacturers can still keep shippin
