As my friend told me the other day: If you are buying a new computer be sure to also buy windows XP.
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You can always try to get crossover for your mac, bootcamp or/+ windows XP. XP seems to be the latest one that actually runs OK on a mac from what a friend told me. Full version of bootcamp allows you to run windows with out having to restart each time you want to switch systems. Dunno, I personally never trusted Microsoft after Vista XD