Does your key fob open the doors remotely using the central locking?? If it does then the imobiliser should be deactivated to.. Try putting the key into your ignition-tuen the dash lights on but do not turn the engine over--with the dash lightd on and your doors closed-press the key fob once--this may reset the key to the car etc.. Tri it-- hope it works.
Paul Bradley, September 2008