I replaced the multifunction switch on my 04 when I upgraded to foglights.
It's not bad at all, remove the column covers, disconnect the wiring connectors and a couple screws IIRC.
You can try removing it and spraying the thing down with contact cleaner (Radio Shack).

Price out the switch and the fog light kit. The kit wasn't too bad, and they may be higher on just the switch. That way, you have spare lights.