I have come across a couple of stepper controller boxes on Ebay and was wondering if they are worth pursuing. They are of a micro steppping type but they have a rs232 input. I know that all the other controllers connect into the parallel printer port. Is this something I should avoid or go after. I want to be able to use a "standard" cad/cam program and avoid some kind of specialty program to make these boxes work, or would an adapter board to go from parallel to serial work. Comments.