How can I get a key without a security chip in it to start my car

I just bought this car and it doesn't run at the moment but the guy I bought it from lost the original key with the security chip in it and now all I have is a key without a chip that will unlock the steering wheel but not start the car. The dealership says I have to have plates and insurance before they can order me a key but I can't get plates until it can pass inspection so how can I get the car starting with the key without the chip in it?