A virtual applicance - who would have thunk it.
W00t! We've just confirmed that MS is a year behind the technology/conceptual curve yet again.
Virtual Appliances aren't a new concept, although hosting one on a MS box might be.
Here's the link to the more than 300+ applicances that are available today from the folks that treat virtualization as part of an overall strategy as opposed to an add-on.
http://www.vmware.com/vmtn/appliances/index.html