Thanks for that very very extensive explanation. The weird thing about my second key (I bought off Ebay) is: that I can get it to start the car, but then the master does not start the car anymore.
I did not realize at the beginning that opening the doors and starting were two different function of the key. I just assumed that if the doors open, it will start the car.
I messed around with some of the procedures floating around on the net and I finally got the second key fob I had bought of Ebay to start the car but then the master key would not work. Further more, after driving the car with the second key fob and shutting down the engine, the second key fob would not work/start the car again?? How weird is that is the EWS has to be programmed.
Maybe the second key fob worked because I had just 5 seconds before trying it started the car with the master key?