Trying to FIGURE out how to access 2 different systems both running Windows XP Pro SP3 RDP Terminal Services at home from elsewhere while on the ROAD with single point of presence out to net of IP from ISP to my modem of say 65.96.10.220 ( not my actual IP )

I was able to easily get one working via setting up port forwarding at my router for the IP 192.168.100.3 and the RDP ports, but with 2 sytems behind the router both of which are accepting RDP connections, how do you designate with Windows XP Pro SP3 which system you want to connect to from the outside with only a single IP.

I am guessing that maybe I will have to assign a unique port for each system to communicate through so that I could call the systems by IP:port and say the FIRST system is 5900 and the second system is 5901 so that you could designate from the outside IP:port as to which system you want to access remotely.

But havent seen where the Windows RDP service can take an alternate port configuration...or is there an easier way than defining a port specific for each system? Maybe I am doing it the hard way.

Currently, I have been CONNECTING to one and then accessing the other through VNC, but I am thinking that there is a better way in which I can access both systems maybe by IP: Custom Ports from on the road.Assigning a different RDP listening port is documented here; http://support.microsoft.com/kb/306759