I've written up instructions how to install the iPorsche, a device that helps 99-02 996/986 owners to integrate their iPods into their stock stereo systems. Send me a PM for more information.
Things you'll need:
1 iPorsche kit
1 T20 Torx Screwdriver
~30 minutes of your time
Also, make sure you know your radio code.
Installation instructions can be found
HERE