For those who've upgraded to Vista, I wonder if there's any way you can download your old XP disc that you have left over from your last PC, without having to toss Vista completely?

Do I assume correctly that it would be impossible to have them both and click between them?

Before you tell me that's dumb, I already know I'm hopeless at this stuff, but sometimes dumb ideas do actually work.

My DD told me to hang onto my XP disc and when I get my new PC I could download XP onto it and not have to do Vista if I don't want to.