You could always give Netgear phone support a call. They can guide you through some steps that will help, but when it comes to doing anything advance like I have with them they can be pretty crap, if not make matters worse.
But like people have said, could you tell us what the model of your router is? Maybe even tell us the version (if it has one), and if the firmware has been updated to the latest version. Through the devices webpage, is there anything interesting that you can tell us, or even something odd about the lights at the front of the device?