http://blogs.technet.com/jamesone/archive/2008/05/28/the-hyper-v-api-network-interfaces.aspxIf you've read my post on adding disks to a Virtual machine , the techniques here should already feel familiar. We create a NIC , and we create a switch port. And then we tell the NIC it is connected to the switch port. Hyper-V creates VM switches whichen-USCommunityServer 2.1 SP1 (Build: 61025.2)