If you got a used ignition switch and key, just take the blade from the key you bought and put it in the FOB that came with the car.
OR take the RFID chip out of your car's OLD key and glue it into the key from the donor car. The RFID chip in the key is mated to the SKREEM.

Once you do that, the start enable will work. Easy.

NOW, to program the unlock/lock function, if you are using the FOB from the other car, simply program that function like this:
Get in car, close door.
Put key in, do NOT turn.
Press lock or unlock twice.
Turn key to "ON" but do not start, turn back to OFF.

Remove key and try the lock/unlock functions. Might take 2-3 tries to get it to 'take'.