01 Rear Window Regulator

My driver side rear window regulator is bad. So I went to replace it and was told that it is the same one for the front and back. After I bought it and tried to put it on it was not the correct one. I took it back and they gave me the one for the passenger side and told me to try that one, but it did not work either. They said those were the only 2 they had and that one of them should work. My question is: Should it be the same one for the front and back? Which one will fit on the rear driver side?

Also, I just replaced the clockspring and my airbag light is still on. Is there a way I can reset it without having to take it to the dealer??

Thanks

On most vehicles, the airbag light should come on for @6 seconds, and then go off if the system is working properly. If there is a fault or a problem in the system, the light will remain illuminated, or flash continuously. If the airbag light does not work properly, some vehicles have an audible tone that sounds indicating a problem with the airbag light system. When the light is on (or the tone is sounding), the airbag will NOT deploy, even in an accident. Most systems can only be diagnosed using a scanner designed for the airbag system, however some use flash codes to indicate the problem. The scanners at Auto Zone or the ones that sell for @ $50 will not access the airbag system, only the engine systems (check engine light).
This website gives you the procedure for diagnosing and resetting some systems without a scanner. Some vehicle manufacturers accommodate that (like Toyota, Lexus, Nissan, Infinity, Honda, Acura, Ford, Lincoln, Mazda & Mercury) and some require a scan tool. http://www.airbagsolutions.com/
Check out these websites also for more info on airbag systems and the light.
http://blog.airbagsolutions.com/archive/2007/11/18/why-is-my-airbag-light-on.what-should-i-do.aspx
http://www.airbagsolutions.com/resources.aspx
http://blog.airbagsolutions.com/