You'll need to either use scene capable switches or lamp modules (such as smarthome Switchlincs or Lamplincs) or a home computer based controller (Houselinc). I'd opt for the latter if you can spend $180. It offers not only scenes, but input events (automatic dimming of a room for instance), and timed events (controls your sprinklers, turns your lights on or off at specified times, turns off the wife's closet light after 15 minutes since she always leaves it on, etc.). Then, you program a specific address that you use for that event, and the Houselinc sends out the macro to the switches. Then the Pronto just has to send out that single X10 address and the Houselinc does the rest.