Mikkel,
I built my own LPC programmer several years ago and since that it works fine. The work took two days: one for the hard and one for the code. I spent only two chips to adjust and test it. So Raghunathan's and Per's opinions have nothing to do with the reality. As for Philips - they just want to get some extra money and thus hide all the information that can be sold. I cannot send you the specification as you did not post your e-mail.
Regards, OV.