My domain is a Windows 2000 domain and I have TS Licensing running on one of my DCs and I have Windows 2000 TS open licenses installed and activated. I just installed a Citrix (XP FR3) server in my domain, on a Windows 2003 server. My question is, are the Windows 2000 TS licenses that I have installed sufficient or do I need to by Windows 2003 licenses, since my Citrix server is running on Windows 2003? Everything works great, but I am worried that it is only temporary.