Hi Rob,
Good to hear that You win.About DMX, yes You need a DMX address if You want to control something like camera, smoke, player and offcourse fixtures mainly, about SCS, You don't have to push them, just download NDI Tools, start Screen Capture(NDI) over the video, start Studio Monitor (NDI), and than You can see NDI source in Capture. NDI is very easy to use.
Best Regards!
Dian