UPDATED... If you want to save $50 on Windows XP Professional, Microsoft is offering a rebate for people who attend a local launch event for the product on October 25. Microsoft will hold local events in most US states, the District of Columbia, and various international locations, so the chances are good that there will be an event near you. Attendees will also receive a $50 rebate coupon for any version of Office XP.
For more information and to sign up for a local XP launch event, visit the Microsoft Web site.