VNC Server Software

Hello,

I was hoping to run a VNC Server that does not require an individual login / password type configuration.

I was hoping to find something similar to Windows Remote Desktop, whereby a user could connect via VNC, and then login using his normal credentials.

In a perfect world, I would find a way to use RDP to connect to a VNC server, but I'd just be happy with not having to configure VNC on a per user basis.

Does anyone know of any software out there that could do this for me? I had looked at vnc-ltsp-config, but could not find a version for RHEL6.

Thanks!
Barry