You cannot upgrade any version of Windows with the current Beta, you can however run the setup program from a Windows Enviroment and install Vista to Dual Boot.
If you have Raid Drivers it's best to keep them handy, you can load the at the start of the dos based setup phase by pressing F6. Vista does have a lot of hardware drivers built in, you can check the Beta website for a list of supported equipment.
It's supposed to be closely intergrated with Vista which seems to imply that it should do, i can't verify this though as the damn beta servers are shite and swamped.
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