Controlling Ceiling Light That Has 2 Switches?

["(PeteCresswell)" <x@xxxxxxxxx>]

I've got some X10 appliance modules.

Also have a ceiling light in the rec room that occasionally gets
left on all night just out of carelessness.

I'd like to put an X10 module in somewhere and have an mControl
event turn it off unconditionally at, say, 11 pm.

Problem is that there are two wall switches, each with more than
two wires and my understanding (and X10 modules) stops at two
wires.

Is there a way?
--
PeteCresswell