Unable to connect to Internet with DSL

Using a Windows 2000 Server (SP2), I am unable to connect to the Internet using a DSL connection. All client computers can connect using the DSL connection. The topology is a Windows 2000 Server domain. Client computers connect through a DSL Router/10-100 switch and then through the DSL modem (pacbell). Browser is IE 6. The server is running AD and DNS. The router acts as the DHCP server, but the server has a static IP address. Any help?