The components can talk to each other - but it's a bit different. Click on the block with a hole in this example with the interact tool to see how I made it work.
Set the onclick attribute of the switch to the following:
Animate("Switch_RotZ", angle1, angle2); Animate("Light!Material", Material1, Material2).
Doing this will work, even if the light is not in the component with the switch. The problem becomes importing and adding extra copies, but it is doable.
Mark
It's the game of telephone! Except this time the message isn't a bad name about the teacher...