You say that it can't be done and yet the link you provide states:
Downgrade rights offer a practical solution. The customer can:
* Purchase a PC with Windows Vista Business preinstalled.
* Downgrade—at no additional cost—to Windows XP Professional.
* Move to Windows Vista Business at the appropriate time. The system is licensed and ready for conversion.
If XP doesn't activate online, then you have to call and give them the Vista Business license key.
It's possible I wasn't clear in my post. All of the Vista Business keys I was talking about are what originally came with the computers pre-installed with Vista Business. Thanks for the link though, it's helped me better understand the downgrade process.
if you have multiple machines that run windows vista go out and buy the family pack of windows 7 upgrades it gvies you three keys. and its only like 149$
Still Learning, so you know Home/Home Premium editions of operating systems are unable to connect to a domain for a business environment so that deal wouldn't work. Nice thinking though