I have an office with an old server running Win 2003 server (server A) in a workgroup setting as a file and application server. This server is being replaced with a new server running Windows server 2008 (Server B). 50% of the office computers are members of a corporate domain and are authenticated to that domain via VPN. All the computers in the office access file shares and applications running on Server A. Is it possible to set up Server B as a domain controller and be able to host the same applications and file shares that Server A does for the computers that are members of the corporate domain as well as the current workgroup computers in a new domain?