Hehehe. Thanks for that advice. Actually, I know that much. :shock:
I'm going to try to quickly educate myself in the area of transistor circuits. I certainly have enough hardware lying around my office. I want to design this so selecting which PIC to program is addressable, since I need to channel the data, clock, AND Vpp lines to the selected chip. I already have five various PIC projects breadboarded that I switch around working with, and moving the darn wires is getting really old. If it was all 5v, I'd have it made, but the 12v throws me. I've found a couple of sites that focus on open collector circuits using transistors, but if you can think of any additional places that might help, I'm all ears!