OK so I have a pretty good WMC setup, server, drives in a raid, 4 tuner cable card, and analog tuner card with FM.   So we use WMC for all TV's in the house with extenders from linksys (DMA2100). They don't make the DMA2100 anymore so I bought up all I could find on ebay.  All of that works great, I have a DVR for my CCTV cameras, and wanted a way to watch them from any room in the house. I noticed one of my tuner cards had RCA inputs, but WMC doesn't support that as an input unless you use it for an external tuner box (cable box, satellite box).  So I looked all over the net everyone had the same question, and everyone said it can not be done, or you need all IP cameras and use mceNetCam.       Then it hit me... DUH.......     Use a modulator and send the cameras over channel 4 on the analog tuner card! A friend gave me an RCA CRF907 TV modulator.   I created a new analog channel...