If you have all the appropriate wiring for a true 3- or 4-way light, then you can use the X10 WS4777 with multiple companion switches or you could install one of the other full switches that are 3-way compatible. I haven't looked at the wiring for the WS469, but I know it said 3-way installation on the docs when I looked. As for the WS4777, you have to install the companions AFTER the master switch. If you do it the other way, it won't work. I had it backwards on my first 3-way installation so it doesn't create smoke, but it won't work as expected.