Home CCTV cabling system

http://www.swannsecurity.com/s/products/view/?product=791

I am thinking of purchasing a CCTV camera (general domestic type for the home) something like the one on the above link.  My local electronics shop Maplin in the UK have many different models, from wired to wireless.  I am trying to achieve the following.

The ability to view two camera (one front garden and one back) without any hard drive recording system or complex distribution system, on more than one TV in the house.  Most cameras, including the one above, uses BNC cable, A/V cables (yellow and white or red and white) or phono cables.

My problem with this, is that the cable from the camera plugs directly into the yellow socket on the TV.  This is rather pointless if I can only watch it on one TV in the living room which is near to both camera anyway so I could just turn my head and see the same views as the camera (and hence would not need it).  

In my living room, I have a TV booster where a TV ariel goes into it and then a boosted signal goes to 4  different rooms in the house.  Is there a way of somehow connecting this yellow cable (RCA / AV) to the booster via a cheap adapter so that both camera signals (maybe on different frequencies?) can be viewed via the distributed boosted signal around the house.

So in summary, I need a yellow cable signal to be converted to an RF Out signal to plug into the booster rather than one single TV.

Also RCA / AV / BNC, are these cables all the same except for the BNC having a power cable too?
Oh, and do you think I could view two channels if both are on the yellow or would they work on the same frequency (therefore only soltion is a proper distribution/hard drive recording system)?