turn the two center vents up and look up there and you will find some hidden fastnersthat are like a wedge ancor , you take the screw part out and then pop out the rest. there will also be some screws behind the heater controls, take the knobs off the heatr controls and pry the "faceplate" out with a screwdriver. it might not come off easy , but it will come off.
hope that helps
jason