The Inquirer explains why running Windows XP on a Intel x86-based Mac system won't work officially.
APPLE HAS SHINY new x86 based iMacs and the eloquently named MacBooks (yech) out on the market, and reviews, barring a few fawning toadies in the print media, are exceptionally rare. The usual Apple cooked benchmarks abound, but there is no real third party analysis, I think mainly because it is afraid of what will be found. The biggest bloomer is its tacit non-denials of the fact that the current C86 macs will never run XP in an approved or corporately acceptable fashion, and Vista is a long long long shot. Apple knows, is doing nothing to quell the rumours and speculation, and I think that's irresponsible.