It's not the question that I would be asking. As far as I'm concerned:

'The real question is not "do I need Windows Vista?", but "what is the cost of upgrading/replacing my complete system - applications, hardware, and operating system?. The cost of the upgrade of the operating system alone is not the point. I would like to be proved wrong - it would be great if all my applications and hardware continued to be supported under Vista. But somehow, I don't think that's going to happen, and I'll resign myself to soldiering on with Windows XP for as long as I can.'

More at http://spaces.msn.com/members/gcoupe/Blog/cns!1pfnKMM_BORf8-PhonbrwGoA!1825.entry