DOORS v9.0 compatibility

IT has just informed me that they are planning on doing a hardware upgrade of the server that we're running DOORS on. As part of that upgrade, they will be moving to Windows Server 2008 R2. We currently run DOORS v9.0, and I'd like to keep at that version to maintain compatibility with other sites in our organization. Anyone have any experience with DOORS v9.0 on Windows Server 2008 R2?

What about in VMWare ESX server versions later than what is listed in the version 9.0 readme (3.0)?
dbinkis - Mon Jul 11 16:31:56 EDT 2011