Your bulb is probably dead or loose (if not all that's left is a faulty bulb socket or wiring, but I seriously doubt either of those). Your looking at $100 from a dealer/shop. Find a local mechanic (gas station mechanic) to fix it for ya, easy, shouldn't be more than $20-30 (1/2hr labor). Or pick up the Haynes manual for your car, it will show you how to take the dash apart and change the bulb.
Edit: That's the climate control panel your talking about. The instrument panel is the one iwth the gauges and whatnot. If you have the manual (knob) climate control it's usually much easier to change the bulbs.
Edit: That's the climate control panel your talking about. The instrument panel is the one iwth the gauges and whatnot. If you have the manual (knob) climate control it's usually much easier to change the bulbs.