Yessir, and, let's not forget XPs ability to join a Windows Domain and
Vista's inability to do the same.

-Frank

"Tom Porterfield" <tpporter@mvps.org> wrote in message
news:18E90183-5AFA-4B6B-9BAE-E7D51E0A64AF@microsoft.com...
> "Dale" <nospam@nospam.ever> wrote in message
> news:exXUZqnRHHA.4260@TK2MSFTNGP06.phx.gbl...
>> So we were all led astray with the 'must upgrade from an installed
>> eligible OS' statements? If so, doesn't that make the Vista upgrade to
>> Vista Trial sort of a red herring?
>
>
> No. You can use XP Pro as the qualifying product to install Vista Home
> Premium, it's just that you have to do a clean install of Home Premium
> rather than an in-place upgrade. This is because XP Pro has features that
> Vista Home Premium does not have, such as support for two processor
> sockets and support for EFS. Basically if the version of Vista that you
> are upgrading to results in a loss of functionality over the version of
> Windows that you are currently running then you still qualify for the
> upgrade but you must do a clean install.
> --
> Tom Porterfield