Your car should have an OBDII system on it, every car built after 96 does, but if that's not the case, I'm positive our cars have OBDII. If you bought your car used, you may have a chipped-OBD-I in it, but I highly doubt it. I have a 99, but our ports should be in the same place. Your diagnostic port is located on the passenger side. It's on their left, and very close to the shifter assembly, it's roughly a 5" square/trapezoidal shape. If you pull that off, you'll see the diagnostic port. If you pull out the blue plug, and connect the ends with a paperclip, you can get a CEL code from your dash. Here's how:
Short out the blue harness
Sit in driver's seat, put key in, go to I
Watch CEL light.
Long flashes = 10's digit
Quick flashes = 1's digit
You can use that to ID your problem if you're interested. As far as turning off the light, you can pull the wire off your battery. If it's not a real issue, the computer resets itsself and you're clear.
Hope this helps somehow.