I have one computer that running windows 7 and want to have a Dev Environment running on this machine.

I tried to install Windows Server 2008 r2 with Hyper-V role on a VirtualBox virtual machine, but I can't get this role to be installed, since it's need a raw access to the processor.

My goal is to have a virtualized windows server that running Hyper-V, that I can install on it all the machines that I want to have in my environment: 2 IIS servers, 1 SQL Server, Load Balancer, and build server.

Can I get a little help from you guys, to help me achieve this?