This is what I hear from my friend Slinky down the hall: 70-620: Microsoft Windows Vista, Configuring can, in fact, be used towards your :Messaging or :Security specializations for MCSA and MCSE on 2000 or 2003. The web team is adding it to all the related requirements pages. When those are updated, I'll let you know, so you can believe me, for once.

70-620 is also working on a cure for cancer.