Xtension and one or two other automation programs are available for OS 10 and perhaps someday I'll pay the upgrade fee. But for now even our SE/30 will work with a CP-290 or CM11A running xTension, MouseHouse, and probably a few others. When we are gone the SE/30 runs the CP290 via a program called CP290 Commander. It's fine for just turning on and off lights and the computer does not have to be running 24/7 as it does with xTension. On 5/30/04 7:39 AM, "Jerry Krinock" <jerry at ieee.org> wrote: > I have seen at least one commercial home automation software package for OS > X available now. I suggest you consider a "switch".