share my neighbours broadband via my satelite receiver

You run a wire to his house to connect the receive is the best option. On demand video is a rather high bandwidth thing and you will need a very strong signal to get it to work well on wireless.

All you need to put wireless on a satellite receiver is a box called a bridge. Many times they are sold as gaming adapters but they work on anything that has a ethernet port.

Still unless your neighbor is in a apartment on the other side of the wall your largest issue is going to be getting enough signal.