> And about a GUI. Recently someone mentioned that MPLAB calls an external program when it uses some specific mircochip programmer (picmaster pro?). The command line interface of that program is documented. Now replace that executable by a suitable ZPL executable :) Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.