My Porsche boxster 1997 needs a radio code to work Can you help me?

To get the serial number, power up the unit and hold down the "TP" button for 10 seconds. The unit will beep once, use the knob to scroll over a few times and you'll see a seven digit number, preceded by a letter - that's the ser.#

You can always find the serial number on your radio. The serial number is on a sticker - but you will need to pull the radio to see it. To pull the radio you will need "keys" which can be purchased on e-bay. Try a search on "radio stereo removal tool".