Most CFL are not dimmable, so be sure you match your controller with whatever kind of lamp you are using.Just get a X10 switch appropriate for your lamp and a simple controller. Then, at least you can experiment to see which circuits will work where with a known good transmitter/controller. Then when you know that X10 works in your apartment, you can experiment with using Arduino to control your X10 switch.Be sure to get a PSC05 interface so you can use Arduino to talk to X10.
I don't understand what you are asking. You wanna try that again?
Not sure I understand that question, either.
No. I mean a standalone X10 controller. Make sure you have X10 working before you introduce Arduino into the equation.