...from: http://forum.hardmac.com/index.php?showtopic=159&st=0&p=917&#ent... and http://www.appleinsider.com/article.php?id=2164
It seems that, when Microsoft's new OS - VISTA - ships, only the premium versions (there are 4 all together: Home Basic, Home Premium, Business, and Ultimate) are authorized to run in a virtual environment. The Software Licence Terms for VISTA that Microsoft has published at:
http://download.microsoft.com/documents/useterms/Windows%20Vista_Home% 20Basic_English_6d3e0409-7a2c-4239-b850-d41210b71b13.pdf
...state that "You may not use the software installed on the licensed device within a virtual (or otherwise emulated) hardware system" for both MICROSOFT WINDOWS VISTA HOME BASIC and MICROSOFT WINDOWS VISTA HOME PREMIUM. Wheres the wording for MICROSOFT WINDOWS VISTA ULTIMATE indicates that " You may use " ULTIMATE in a virtual environment.
Wayne