[b]To be or not to be...[/b] dbuckley Ahhh - I didn't mind giving a bit of my background as I figured it helps set the scene in terms of where I fit. Hopefully this thread may help others in the same predicament as me. I shall certainly duck off to those links you gave. I'm still awaiting a couple of c-bus quotes to get a feel for the cost. I have a Dynalite one just for the lighting - not cheap when one considers one still has to do alarm, a/v, and the audio. Am awaiting the audio side of Dynalite but know roughly what that will be. With the responses so far, I am certainly starting to see what sort of wiring will be required. I too know that it will be hard as heck to run wiring at least to the ground level down the track. In terms of the wiring... and this is probably answered somewhere else on this forum but is pertinent to the running discussion... will normal cat5e (which is unshielded twisted pair??? or do I have that wrong) do or does it require Clipsal's specific cat 5 wiring. (I am wondering if this is why you distinguish between cbus wiring and flood wiring for cat 5.) And this leads to another question which I haven't yet researched to any extent. There are various entities out there working towards getting a/v to work over cat 5 UTP as opposed to coaxial cabling. Although a/v cable runs may be different from the c-bus ones are the two likely to be compatible? Regards Michelle