The CM17A is not used for video feed. It is used to tell each cam if it needs to be on or off via a RF signal from the firecracker software! this is in turn changed to a PLC signal by the mini transceiver (TM751)
The VA11A is used for the video feed!
Unfortunately the only X10 cam software I'm aware of that can make use of the CM17A is the Xray vision software(and that doesn't do video streaming)!
If I'm wrong I'm sure someone will chime in and correct me!
I understand your frustration with finding the software needed but not all x10 packages come with software!
If you need live video you can still make your own program utilizing the X10 hardware!
You will need to utilize x10 code to activate the cams and switch between them!
Since you know how to make a USB cam work (create a server with, windows media encoder) you treat the VA11A adaptor as the USB cam!
The yellow RCA plug from the VA11A is plugged into the video video receiver this receives signals from which ever cam is turned on!
Hope this helps!
Good luck!