I know there's loads of treads on AirPort Extreme and I've read most without getting an answer to my setup. With my current router, my wifi is patchy in a couple of outer corners of my house, speed is fine. Is extreme likely to extend wifi range and speed. In setting up do I plug it direct into wall socket or plug into existing router. I'm not very techie and 200 euros is a considerable outlay for me at the moment. I dontcwant to end up wasting money