Goodness gracious. Your new Intel based Mac now runs Windows. Officially. With Apple support. Download the Beta from Apple . Read all the comments at Engadget, and TUAW has an extensive list of posts on Boot Camp
UPDATE 1: It looks like Parallels, the software used to run Windows on a Mac virtually, might also be use to run OS X on an XP machine, with the help of VMware. TUAW has the story.