Transmission Method Recommendation

[kenwood850 0]

I would like to purchase a CNB B2760VNF with a 75 ohm composite video output and have the signal sent to a dedicated standard VGA LCD computer monitor about 40 feet away through two walls and direct wiring is not desirable. This camera and monitor would be on 24/7 to monitor a blind driveway but the monitor would only be actively looked at to examine the driveway when a separate proximity sensor indicated that a vehicle had driven in. There would be no recording device or anything else connected to the system. I have no preconceived ideas as to the type of transmission. It could be IP or analog wireless or even over the house wiring but there is no wireless 802.11 equipment already installed that could be used. The only requirement is that it perform reliably and consistently with a minimum of attention after the initial installation. Does anyone have a suggestion as to type and make of equipment that would relay the signal and perform any necessary signal conversions for this to work? Thanks.