or use my instruct able haven't seen anyone else do anything like it
One of the easiest way is to buy a wirless security camera converter hera a link on ebay. They go for around 12 dollars http://shop.ebay.com/i.html?_nkw=security+camera+wireless+converter&_sacat=0&_odkw=security+camera+wirless&_osacat=0&_trksid=p3286.c0.m270.l1313
Just install it as you would normally except place the receiver right next to the tx and then run a long wire to your monitor.
Probably not, unless it was built by adding a transmitter to a normal video camera -- which would be somewhat unusual these days; it's cheaper to design the camera's circuitry for direct-to-digital.