as previous posers said...#3 posidrive
A few kinda special things, there are only 2 screws showing on the toe (the 2 back ones) take those out, slide the toe piece back and off and then remove the two screws that screw in the little black slide in piece that is left.
To take the heel off, keep turning the forward pressure screw to the right right (little one that unscrews while screwdriver is parallel to ski, below the heel post piece) until the heel piece comes out of the track, it will slide forward. then unscrew the 4 screws that hold down the heel plate.
i believe that is all
GOOD LUCK, it isn't too bad