Training/Certification Recommendation for experinced DBA

I'm a long-time DBA w/ a dozen years of experience administering and
developing software for first Informix and then DB2 databases
on the Linux platform.

We are moving to SQL Server 2005 and, given my experience, I am
interested in any recommendations regarding training and certification.
I don't want beginners training.

What would you recommend? Any ideas appreciated.

aj