Follow the links below for further information.

Microsoft System Center Virtual Machine Manager Self-Service Portal 2.0 SP1

http://www.microsoft.com/download/en/details.aspx?id=26701

Now Available - System Center Virtual Machine Manager Self-Service Portal 2.0 SP1

http://blogs.technet.com/b/vmmssp/archive/2011/07/11/now-available-system-center-virtual-machine-manager-self-service-portal-2-0-sp1.aspx

System Center Virtual Machine Manager Self-Service Portal 2.0 SP1 Overview and Quick Start

http://technet.microsoft.com/en-us/library/gg588340.aspx

System Center Virtual Machine Manager Self-Service Portal 2.0 SP1

http://www.microsoft.com/systemcenter/en/us/virtual-machine-manager/vmm-self-service-portal.aspx