[ubuntu] How to have ubuntu host and Virtualbox windows guest on the same network

I have Virtualbox 4.1.18_Ubuntu r78361 where I installed Windows 7 Professional. I want the virtual machine to be on the same network as the Ubuntu host. This is so that when I connect the Ubuntu machine on the corporate network, I can use the Windows virtual machine to access Windows applications on the network. In other words I need the virtual machine to join the Windows domain and have access to the Active Directory