The Microchip data sheet says the 16C7X PIC's can be programmed in-circuit via RB6,RB7, VDD, VSS, and MCLR. 1. Has anybody done this. 2. I have a PICSTART Plus programmer, can I hook the appropriate pins on the PICSTART to the 16C7X and program it in-circuit. I followed the data sheet suggestions for in-circuit programming while developing the schematic for the board. 3. If not #2, is there any available software to read a Mplab programming file and generate the programming waveforms using a PC parallel port. Scott Ammerman XLVision Sebastian, FL 32958