FYi   Components of Server Management Suite Enterprise Enterprise server management licences<Server MLs> for · System Center Operations Manager 2007, · System Center Configuration Manager 2007 R2, · System Center Data Protection Manager 2007 · System Center Virtual Machine Manager 2008 · And System Center Virtual Machine Manager 2008 Management Server License Current licensing Rules: Rights to manage an unlimited number of operating system environments (OSEs) on a single physical server...(read more)

Read the complete post at http://scug.be/blogs/scom/archive/2009/06/06/changes-effective-july-1st-to-system-center-server-management-suite-enterprise-licensing.aspx