Virgin V6 box. Wireless to remote TV?

[Blib]

We recently had Virgin cable installed. Last week I worked out "manmathically" that we could do with another tv two floors above the Virgin V6 box.

Is there a device that I can plug into the box and tv that would send the video signal wirelessly from one to the other? I've heard about senders or units that use the electrical wiring in a house to send a video signal. Would that work this case? If so, which unit would you recommend?

Or, will I have to run a wire through the house?

Thank you.