well the subject says it all .... the connection on the flat moniters and i really only want a small one is a 15 pin connector? is there a conversion cable or devise to make the moniter receive a coax cctv signal ...???? thanks

If you're talking about a computer monitor with the 15-pin VGA input, you'll need a composite-to-VGA converter. Try here: http://lmgtfy.com/?q=composite+to+vga+converter

If you're dealing with flat-panel TVs, most should have A/V inputs (the set of yellow/white/red jacks)... just use a BNC-to-RCA adapter and plug into the yellow jack.