1998 buick skylark wont start

i have a buick skylark 98 and i'm having trouble getting it to start. when i turn the key instead of all the information lights coming on only the airbag and check engine lights come on and the engine turns over and then dies. all of the dome lights, windows, radio and air all works, but the car won't start unless i turn the key on and off for awhile until all of the information lights light up and then the engine will stay on when i turn the key. is this a wiring problem or ignition switch or what? PLEASE HELP! sometimes it wont start for days.....