Sorry I didn't get back to you sooner on this..... here's what you need to do:
1. Take your driver's door panel off, but if you need to unplug any components, be sure to plug them all back in after the panel is off. You will need to have everything operational for troubleshooting.
2. Look for that actuator. It should be white and bolted to the door frame. On your car, it may be inside the window area (between the door frame and sheet metal), so you may need to roll your window up to access it. It should be in series with the solenoid and the switch.
3. I don't know how many wires there are on yours or the colors, but you should be able to figure out which ones go to the inside lock switch, the solenoid, and which one comes in from the main power and remote control reciever (that's in the passenger kick pannel under the dash...... it may be the problem as well, but I'll get to that)
4. Get a meter, set it for DC, put your ground lead anywhere WITHOUT paint, and first test the point that comes from the door switch in the car. Hit it, and you should get a 12 volt pulse. Now, hold it there untill your locks start twitching. If you don't get any pulses reading on your meter on that point, your door switch is fine. Next, put the test probe on the line that comes in from the receiver. Same thing. If you don't get pulses there, your receiver is good. And finally, test the line that goes to the drivers door solenoid. If you get pulses showing at that point, and you haven't touched the door lock, you have a bad actuator.
You should buy yourself a Chiltons service manual or similar...... they have excellent schematics for the door lock circuit, as well as color codes and which wires go where. Without looking at it, I don't remember exactly what is what. If you are good at reading schematics, you should have no problems. Which is why I recomend seeing a reputable dealer if you don't read schemos very well. Door locks for cars today are not very simple anymore, and what you think may be wrong, it may be something totally different. That's why you need to trouble shoot everything. And I didn't even get to the passenger door! Try it, and let me know what you find before you just start buying parts. Good luck!