Maximo, it's dead easy ;-) I got it to work in half an hour, I guess. I can send You very simple ByteBlaster LPT schematic, just ask. I don't know why, but I can't push to work my Ozy as Byteblaster and I made that one. That's will be much longer to get parts for that that solder it ;-) Aivars. 1304100792.0