If you are reading the upgrade documentation


(Upgrading to BizTalk Server 2006 R2 from BizTalk Server 2006.doc)

“To apply the HIPAA33ForR2.mst transform”

You can download the Windows SDK from http://go.microsoft.com/fwlink/?linkid=75636

That link doesn’t work, you need to go here and choose the right environment:


Thanks windows SDK blog for the quick turn around!