You will require yourself, three musically-blessed colleagues who are in on the joke, and an unenlightened co-worker.
Co-Worker: Hey, what's the best way to get my wireless working?
You: Well, if you've got Windows XP, try Wireless Zero Configuration. Go to Control Panel, and then -
(On each successive note, one of your colleagues should join in.)
Hold the IV (the long chord) as long as you can, preferably until someone runs out of breath or your target's eyes start to water. Once you've finished, have your colleagues go back to what they were doing, while you walk off. Don't ever answer the question.
(My Sibelius skills are rusty - a couple of years ago, this would have taken me about thirty seconds to put together, most of which would have been typing the lyrics.)
