Well, we have received a LOT of feedback about the Windows Vista Ultimate with SP1 giveaways that we handed out at TechNet events during the second half of 2008. It seems we did not do a great job of informing attendees that the PINs would expire on December 31, 2008. So, today, I have some good news to pass on!
We are currently in the process of extending the expiration date, probably to the end of this month or the end of February. Please check back at http://www.registerwindowsvistasp1.com/ in the next week or so and the site should be live again for registrations.
Thanks for your patience in this matter, once the site is live again please register ASAP.