A couple of things that may be causing the connection problem for you...
1. Norton Internet Security, have a look at these instructions on configuring it even though the filrewall is disabled ...
Port Forwarding for the Norton Internet Security 2007
2. Your Netgear WGR614v5 also has a Nat Firewall within, so Port Forwarding will open a port for limewire to access...
Port Forwarding for the Netgear WGR614v5