LAN setup

Hi guys,

I'm running Parallels Desktop 7 for Mac with 2 VMs; a Windows 2008 R2 domain controller and a Windows 7 client machine. My Mac is of course connected to my router which issues DHCP addresses. I want to create a separate LAN where my 2008 R2 DC is a DHCP server in its own scope, with the client connected to that LAN. So I want to separate my VMs on Parallels from accessing my actual network outside of the VMs.

What NIC configuration do I need to set?

Thanks,
Christian