Unfortunately, it is what it is with X10. I spent hours and hours reading product documentation, postings, etc. to try to figure out what to get. At the end, I ended up simply putting the cameras & video receiver/senders boxed in a closet - essentially throwing them away.
From what I recall, here's what you'd need:
* a video converter for your PC. The latest is the USB VA12a
* a video receiver to connect to the VA12a (if you want sound, you'll need to get the one with sound output)
* cameras (wired, PTZ aka ninja, wireless)
* AHP plug-in (iWitness)
* camera remote control (optional)
Here are some things to consider:
THE VIDEO CONVERTER (VA12a)
* when it works, the quality is actually not bad, albeit the refresh rate is not that good, but you can distinguish between moving people versus static things
* The driver is soooooo buggy that in using AHP 3.236, I wasn't able to keep my machine running for more than 24 hours before it locked up and needed a reboot. The driver appears to have memory leaks that slowly eat up resources until Windows is left with nothing
* The VA12a driver only works with AHP 3.236, which as you may have read, it's the buggiest AHP version out there. Personally, I'm on 3.228 - one of the reasons why I can't use AHP's video features.
* if you're using any X10 security, you don't want to be on 3.236 because of incompatibility with OnAlert. Another reason why I moved to 3.228
* they have fixed some driver issues with the latest driver release, but using AHP as part of my security system is more important that getting the cameras to work. I bought another dedicated professional system that does a much, much better job
CAMERAS
* From what I read, they are all CMOS based, meaning that they don't have optical resolution or true image sensing. For that to happen, you need actual lenses (e.g., CCD). CMOS is all software based and very low quality - especially at night or distance. I believe this is why X10 sells some software that supposedly enhances all your videos. All it is, is extrapolation and wasted pixelation in my opinion
* the wireless cameras transmit in the 2.4ghz frequency, meaning that if someone parks in front of your house with a 2.4ghz receiver, they can see everything that your cameras see since they broadcast on a consumer non-secure, open frequency (all 4 channels). If one of your neighbors has one of those X10 transmitter/receiver combos to transmit from one TV to another, they'll likely be able to watch your cameras too
* also, because these cameras use the 2.4ghz frequency, if you have a wi-fi network nearby (yours or close to your house,) you'll need to configure the router to transmit on a nonstandard channel to avoid conflicts with your cameras. Good luck doing that with your neighbors' router. All of mine have wi-fi networks, which reach my house and caused my cameras to be snowy at all times
* wired cameras may be a better option, but then you'd need a video multiplexer (like a DVR board in your computer.) I don't know if X10 has those.
THE RECEIVER
* its reach is horrible. You'd definitely need to modify it to replace the antenna it comes with (a wi-fi router antenna does a good job)
* the sound quality (Vr38a) is indistinguishable most of the time from the static it picks up
Well, there you have it - my recent experience with X10 cameras on AHP - for whatever it's worth. I'm sure other people have been able to do other things with them, but the fact that I have a mix of requirements, it just didn't do it for me.