Help extending

[delectable]

Hi,

I have two broadband connections on two different phone lines. The routers are in different parts of the house. I am disconnecting the broadband service at socket A but need a wired lan connection at the same point. What's the best way of extending from socket/router B?

I've looked in to the power socket extenders, which seem an easy option and wireless lan extenders. Which option is best? Also could I use the old router A as a bridge/extender?

Thanks in advance.