Key won't turn at all

What is your question?

I can't get my key to turn in the ignition at all. I'd replace the lock cylinder but in order to do that the key has to be in the run position, which I can't do. What should I do? I've tried lube, I've tried tapping, I've had a new key made at the dealer. I've jiggled the steering (which is now locked) My car is stuck in Park. I've used an air cleaner thing to blow out any dust. I'm stuck. Please help!