Is your LW connected properly (all green/blue connection bars)?

If LW is connected, try port forwarding. Your instructions are here: Port Forwarding for the Motorola 2210-02-1006

Before you set up port forwarding, you'll need to set up a static IP address: PortForward.com - Free Help Setting up Your Router or Firewall

LW's listening port, port in the 'manual port forward' box & port forwarded within modem/router setup must all be the same number