Can I upgrade to Windows 7 for free?

8) Is there a limit to how many computers qualify for the update program?
Yes, the program covers a maximum of 25 PCs for an organization. Microsoft says the program is designed for consumers and small businesses, and notes that the limit of five machines under a similar program with Windows Vista has been lifted.

Gartner analyst Michael Silver said that big businesses should press computer makers to extend the upgrade to cover any large orders between now and when Windows 7 ships. Otherwise, the only way for businesses to be covered is to purchase one of Microsoft's volume licensing programs for Windows, such as Software Assurance.

"Microsoft is encouraging organizations to buy (Software Assurance) and those that don't will need to deal with these artificial, annoying rules," Silver said.

9) What about those who bought Vista PC before June 26?
Again, I've gotten a lot of email from owners of older Vista machines, including some that are only a few weeks or months old, wondering where their free copy of Windows 7 is. Well, the Upgrade Option only kicked in last week, so owners of older machines won't be getting a free copy. The preorder program probably offers the cheapest option as far as getting to Windows 7.

Among the questions I was asked most frequently was whether someone could move from a version of Windows XP or Vista to a different version of Windows 7. In all combinations, the answer is yes, and it can be done using the cheaper upgrade version of the operating system, though in some cases a clean installation of Windows 7 may be required.

If you are moving from Windows Vista to the same or higher version of Windows 7 and not changing from 32-bit to 64-bit, you can do what is known as an upgrade-in-place. This transfers your existing setup to Windows 7, preserving all your settings and favorites.

If you are going to a lower-end version of Windows 7, coming from Windows XP or moving from 32-bit to 64-bit (or vice versa), you need to do a clean installation, which means backing up your data, installing the new operating system, and then restoring your data and reinstalling your applications.

10) I live in Asia. Can I preorder Windows 7 from the US, especially if the local version cost more than US online retailers?
Unfortunately, no. Currently there is an agreement with Microsoft that US stores will not ship Windows 7 internationally. However, we are not sure if this applies whether you use forwarding services such as BorderLinx, which provides US addresses for the retailer to send to before forwarding the package to your location in Asia.

11) I have a Windows XP machine which was officially downgraded from Vista Business or Ultimate editions. Am I still eligible for the upgrade program?
Yes. As long as the machine was purchased after June 26, it will be eligible for the program subject to terms and conditions by the hardware manufacturer. If you are not sure, check the Microsoft Certificate of Authenticity sticker on your PC. If its a Vista Business or Ultimate, chances are you are in luck, though you will still need to refer to the vendor for confirmation.

12) Can I downgrade to Windows XP if I buy a Windows 7 machine after October 22?
It is possible as Microsoft has extended the downgrade program to Windows 7, subject to conditions by individual vendors. However, this applies only for 18 months after Windows 7 ships or when the first Windows 7 service pack is released, whichever is earlier.

Original article at CNET News. Darius Chang from CNET Asia contributed to this article.