I am reposting this because I didn't receive this back from the forum. I have a client that is in a bit of a pickle. They are currently running Windows 2000 AD and 5 - Windows 2000 Citrix servers running Metaframe 1.8a. They know they need to upgrade their infrastructure. The question is can we upgrade the active directory domain to 2003 r2 and still maintain the citrix servers as they are? Somehow I don't think we can do this. Any thoughts or ideas would be greatly appreciated.