The Answer...

I suffer the arrows of stupidity, and selflessly scribe my tales and all you lot seem to be interested in is the poxy logic puzzle I mentioned last time.

The answer is...
you turn two of the lights one, and then after five minutes you turn one off. Then you walk in the room, and you can figure out which switch works each light by seeing which is on, which is off, and which is off but with a warn bulb.

The puzzle is bollocks, there is no indication that you can reach the light bulbs for starters. For some brilliant answers to stupid logic problems go to http://www.michaelkelly.fsnet.co.uk/lateral.htm

Frankly he's far funnier than me. But come back, don't be fickle now...