[Mitcheky]

i just replaced my engine and got the new one in, and got everything plugged in, and when i turn the key nothing happens, and i have a theft light on the dash now. i jumped the starter with the key in run, and the engine started right up, i turned it off and tried the key again and nothing. the engine came from a 96 sunfire. anyone have any suggestions or idea what to do to get the theft light off and to get the ignition working?