[Nimbus117]

Hi Phil,

I found this, it mentions the 911 but the front bit of the Boxster is basically a 911 so it should work, lol.

Instructions
Things you need

Porsche key fob
Ignition key

1 Enter the Porsche by the driver's seat and be sure everything is closed. This includes all doors, boot lids and bonnet.
2 Insert the key into the ignition and turn it clockwise until you start the Porsche engine.
3 Turn the 911 engine off and remove the key from ignition. Wait 90 seconds before continuing to the next step.
4 Turn the ignition to the "On" position and wait 15 seconds. This position is as far as you can turn the key without starting the engine. The immobilisation light located in the 911 dashboard clock will go out.
5 Turn the ignition off again then turn it back on. After 15 seconds, the immobilisation light will begin to blink.
6 Enter the four digit security code using the ignition. For instance, if the first digit in the code is three you would turn the ignition from on to off, then back on. This would equal 1 digit, so you would repeat this step two more times if the first digit is "3." Afterwards, wait for the immobilisation light to flash then repeat this step for the next digit. After the fourth and last digit is entered, the light will flash again to signal you are in programming mode.
7 Press a button on the key fob and hold it until the LED light blinks. This will indicate it has been programmed.

Sounds strange - let us know if it worksas no idea what model 911 they are on about. If not then the dealer will have to reprogramme it for you