We have a client that is looking to move to 2008 R2 domain functional level and implement Exchange 2010. They currently have a Windows 2000 Citrix/Terminal Server that uses a Windows 2000 Domain Controller as it's licensing server. Obviously, we want to demote that 2000 domain controller; however they still MUST run Citrix/Terminal Server on 2000 due to a proprietaty app they are running. I haven't been able to find anything on whether a Windows Server 2000 Terminal Server can talk to a 2008 R2 Remote Desktop Licensing Server. I know it can talk to a 2003 Terminal Server licensing server... anyone have any experience with this? Recommendations?