I was looking up online how to program my car remote if I were to buy a spare one off of ebay. These are the ridiculously insane steps:

1. Begin with: Drivers door open and key out of ignition
2. Insert and remove key from ignition 2 times within 5 seconds
3. Close and open driver's door TWICE within 40 seconds
4. Insert key into ignition and remove it
5. Close and open driver's door TWICE within 40 seconds
6. Insert the key into the ignition
7. Close the door
8. Turn the ignition switch from "Lock" to "On" and back to "Lock"
9. Press both Lock and Unlock buttons simultaneously between 1 and 1.5 seconds and release
10. Within 3 seconds, press the transmitter Lock button for more than 1 second and release
11. If successful, the power locks will cycle "lock" to "unlock" once.
12. Open driver's door to exit programming mode.

Wow. I had to do this on another car and there was a button that said "program" that you pushed then press the remote. That was way too simple though.