To run the Routing and Remote Access Server Setup wizard to configure your Windows 2000 NAT:
1. Click Start, point to Programs, point to Administrative Tools, and then click Routing and Remote Access.
2. Right-click your server name, and then click Configure and Enable Routing and Remote Access.
3. In Common Configurations, click Internet connection server, and then click Next.
4. In Internet Connection Server Setup, click Set up a router with the Network Address Translation (NAT) routing protocol, and then click Next.
5. In Internet Connection, click Use the selected Internet connection.
6. Click the interface that is connected to the Internet (the public interface), and then click Next.
7. Click Finish.
8. To enable the DHCP allocator, right-click the Network Address Translation (NAT) IP routing protocol, and then click Properties. Click the Address Assignment tab, and then click Automatically assign IP addresses by using the DHCP allocator.
9. To enable the DNS proxy, click the Name Resolution tab, and then click Clients using the Domain Name System (DNS).