I made the mistake of buying a MacBook Pro because I could run both Mac OS X with my somewhat heavy investment into PowerPC software and Windows on the same laptop.
Unfortunately, I'm having a problem with the screen which Apple is refusing to fix under warranty (for a little over a month old machine). I spent a half hour on the phone with a rude customer service agent --someone I'd expect at Dell or HP, not Apple.
Unless Apple fixes their customer service, I don't think they will make inroads into the "Windows" crowd.
The other mistake I made was forgetting how much Windows requires the "second mouse button". At least for the laptop, it is quite a pain to use.
Is Windows On a Mac Really Drawing in New Users?