You're talking about 'superfetch' the preemptive cache, must say it's actually a great idea..
However, Vista is a terrible example of an OS, and I'm not even going to say why. Look it up, or just use Vista to develop a large web app on a dual 2.4GHZ / 4GB laptop with 2x7200rpm 160gb sata drives..
I found myself (for a short time) defending everything Microsoft did - I don't know why that was. Vista finally shook me free of it (helped earlier by ie6/ie7).
Mike, if you want to install Mac OSX - you'll need to look into one of the
hackint0sh distros