Well, we've been waiting for this one for a little while, and here it is...KB950050. Get the details from http://www.microsoft.com/windowsserver2008/en/us/virtualization-consolidation.aspx

and download from here http://www.microsoft.com/downloads/details.aspx?FamilyId=F3AB3D4B-63C8-4424-A738-BADED34D24ED&displaylang=en

[RH]