We've posted information about SQL Server 2008 certifications - and the related prep guides - to our site. Hope you find it helpful; let us know if anything is amiss. Don't forget that Jeff will be at TechEd Developers talking about all of this next week in Orlando, and Gerry's on his blog. They are the ones who are responsible for all of the information you'll find here. Check it:
Prep guides for related exams
Don't forget there's a poster with this all mapped out and a Live Meeting coming up. Review that stuff, plus some info on dates, poasted here.