Earlier today, we announced that we are joining Microsoft's Server Virtualization Validation Program, which means that Microsoft will support anybody running Weindows Server on a Virtual Iron virtual server.

From the press release:

“Microsoft has worked with industry partners, such as Virtual Iron, to create a technical support model that will meet customers’ growing demands,” said Mike Neil, general manager of virtualization at Microsoft Corp. “As more customers deploy and virtualize Windows-based applications on Windows Server 2008, Virtual Iron or other server virtualization software, this program ensures that customers receive a joint support experience for their virtual infrastructure deployments.”