A few days ago Microsoft eased the hardware requirements to be able to use Windows XP Mode in Windows 7 and now they are providing some info on how small and midsize businesses can deploy it in their organization:
Windows XP Mode provides a virtual Windows XP environment in which small and midsize businesses can run many Windows XP-compatible business and productivity applications. Windows XP Mode is a benefit of Windows 7 Professional. Ultimate, and Enterprise and allows organizations to take advantage of new features in Windows 7. This white paper describes how organizations can customize and deploy Windows XP Mode to multiple computers.