Boxster Fault Memory / Headlamps

[sboost]

I just purchased a 2000 Boxster and am new to Porsches. I consider myself a competent weekend mechanic and picked up a CD of the Boxster service manual. All of the recommended maintenance procedures and inspections appear well within my capabilities with one exception - the requirement to read out the fault memory. I obviously don't have the "Porsche system tester" nor an OBD scan tool and have never worked with one. Anyone have any thoughts on whether or not it's worth while paying the dealer just to read out the fault memory if the car seems to be running fine without any problems? I would have thought that if there were any faults the check engine or another warning light would illuminate. Can anyone confirm?

I also have a question regarding headlights. My car is not equipped with Litronics, and the face of both headlights appears slightly burned with some yellow-brown areas. In my search for a used Boxster I noticed others with exactly the same problem. Does anyone know why?