So are you saying you have a bunch of VIN numbers in a text file (delimited?), database table, on little metal stickers on the cars?? Could you be more specific? Can you send some some sample data (if not too confidential)? Knowing that you want to use PHP to parse out the data, I would assume that you are trying to post the individual VIN numbers on the Web somewhere? I would also assume that the data is probably a text file. If that's the case, regular expressions can help. If you had been more detailed, I would have been more detailed here.