Or he could just install X86-64 Linux :-D
/me ducks
Anyway, XP allways ran fine for me on my quite modest (for todays standards) system - Athlon 64 3000,1.25gb,7600gs 256mb.
I now run Vista Home Premium on it though, and Im actually pretty happy with it despite the horror stories that i've heard.
One thing that I find indespensible on vista is the new search feature, I can type an application name and hit enter and it starts instantly, plus I find the search considerably faster than Spotlight is on OSX. That of course could be down to hard drive speeds in my mac mini and the fact that the mini has a 1.5ghz PPC...
