Can't unlock rear doors of Saa 1995 Saab 900

I' bought the car used and have had it about two weeks; it didn't come with the owners manual. Just today, I couldn't get the rear doors to unlock. I think I locked the car with the key and all the locks went down, but now the rear door locks refuse to budge. The lock button on the center console does nothing...the key has a button that doesn't do anything exept a little light lights up. and the fob has on button that makes a green light come on and another that makes a little red light come on but otherwise...nothing. Any help would be greatly appreciated.