... there's also this thing called a clean install.
Hi all -- I think the reason you *might* need to re-install VISTA is that you can qualify for an UPGRADE price for W7 rather than pay the full retail price.
You'll still be able to do a "Clean install" but the DVD will probably insist that it's actually started from the VIST aystem -- it will then make a Windows.Old folder (like now) which you can delete.
If you boot directly from the DVD and do a clean install without an intital VISTA installation you will surely get a problem when trying to activate as it will say "This copy of Windows is only licensed as an Upgrade version".
I had the same issues with a VISTA ULTIMATE upgrade disk.
Cheers
jimbo