Apple supports Windows XP booting on Intel-based Macs
Apple - Boot Camp, announced today, is a beta that will allow for booting of Windows XP on the newer Intel based Macs. It states, "Once youÂve completed Boot Camp, simply hold down the option key at startup to choose between Mac OS X and Windows."
Now they just need to get their OS X based Windows XP virtualization environment built into OS X so it can natively run Windows applications.