What RDP Server is on my WinServer 2003 .. just got responsibility

Just got a ws2k3 which prior admin THOUGHT he got Citrix but either not licenses or different product. I can RDP thru firewall to this host 2K3-R2 but message .. dont have license server. Can I identify, remove and simply have one or two remote session capabilities?

Sri, I’m a Unix guy and have few MS Wind smart guys around.