I've read about this, but haven't any experience myself. As long as you have a legal copy of XP and a legal copy of the Vista Upgrade you shouldn't have any issues. At worst this would necessitate a call to Microsoft because of the significant change in hardware.
It appears that Vista will no longer check for previous OS's unless they are installed on the disk. So (IMO) your options are:
1) Install XP, then do the Custom install option to have a clean copy of Vista on your system. or
2) Install Vista without activating/entering the product key, then reinstall it as a clean install (article here: http://www.theregister.co.uk/2007/02/12/ch...a_for_everyone/
) While this is technically a violation of the EULA, you already have the copy of the qualifying OS (XP) and aren't trying to "beat the system".
My browser caused a flood of traffic, sio my IP address was banned. Hope to fix it soon. Will get back to posting as soon as Im able. - John
(my website: http://www.carrona.org/
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