You don't want to do any actual wiring, is that it?
Anyplace that sells telephone wiring will have a device that plugs into your
jack and has two jacks on it. Plug an extension into one of them and put it
wherever you want.

Wiring it properly is not much harder. Just connect the red wire to the red
wire on your jack, and the green to the green. Attach a jack to the other
end of the wire and you have it.