remote Desktop controling

Hello Every One.....

I have the following situation and I am trying to find a solution for it....
I have a network and I am using win2k server with a domain to control it and the main purpose of the network is to allow the domain members to access the internet, I am getting the internet from an ISP in Italy via direct satellite that is a satellite dish on top of the building and then down to the satellite modem (LinkStar) the ISP has assigned me a range of static IP`s in the range 10.93.98.66 and it is obvious they are nonroutable IP`s, now since I am not available at the location all the time and the win2k server needs a very close monitoring since I have there more that 200 domain members, I thought if I can find a way to control and administrate the server from a remote location it would ease up things on me and I avoid any method that required puplic IP and in quest for a way to do that I came a cross Microsoft Netmeeting and I found that its desktop sharing facility is remarkable and meets exactly what I need, in working on netmeeting and through my search in the internet I have found that there are ILS servers on the net and from there I can connect to any other computer running Netmeeting and logged in to the same ILS ,so I setup netmeeting on the win2k server and then run it and logged it to one of the ILS servers on the net like netmeeting.de, now from the remote location I did the same and tried to call the win2k server (from the remote location my internet was from Italian ISP with static IP 172.18.0.178 non routable also) but I could not connect.
The issue here is do I have to have a puplic IP to connect through the netmeeting and use the deskop sharing or should the ILS server do that
even if my IP is non routable, can anyone help me on this issue its very important not only for me but I think its important for any network administrator who want to take care of his network remotly without the need for puplic IP`s .


Thank You
Amer Ugeli