OH, the PG2C is the simplest programmer for PIC16. But the disadvantage of it is It required the mainboard of your computer must produce the voltage over 12- 13 V. Some mainboard can not do it. So you should use PG3B. I will post the schematic and the PCB layout (*.max) later. Sorry, I don't have it hear, because I am in the internet service. Or you can search on the web of Mr. Nigel for "P16pro PCB by Mitsuko". It is the same board of PG3B but in PDF format. Hope it is useful! If you still want the PG2C for more simple, then email me : wonbinbk@gmail.com, I 'll send it to you.