You have to navigate your way to your modem/router model, still if you say you have a Netgear Router then try this URL:
http://www.portforward.com/english/r...outerindex.htm
You will find all the Netgear models on this page “Port Forwarding” has instructions for.
UK Bob
PS. Admittedly, it is not clear how to navigate from the main opening page to the information you want.