I ment if you take your router out and plug the dish directly into your pc, you will get a public ip . If you put a switch in to add more pc's it would not work as you only get one public ip with no nat.
You will still want to use your router, it will give you nat so you can have more than one computer connected, dhcp so they all get private ip's and a firewall to protect them.
With your computer pluged directly into the dish (after they have reconfigured it) you would have no firewall (apart from the windows one) on a public IP and thats risky. If you have any open services you will get hacked.
Network Address Translation is just a way of having more than one pc connected to a pubilc ip.
This is all assuming I am correct about the way your isp works. <grin>
http://en.wikipedia.org/wiki/Network...ss_translation
Dave