@Sago48 Hi David and thanks. It's possible to run cables to the back rooms and that's what I was thinking of  - connecting the WAP to the router with a longish cable to get round the wall problem. So the WAP would be at the back of the house, and would serve both back rooms which are one above the other. If that could work I still don't have a clue about whether my router can work with a WAP. I suspect I don't understand networks enough to work it out. Although I've been putting them together for years it's all been trial and error. Do you know if there's a TP-Link WAP that will work with my TD W9970? Thanks.