I was told that everything you needed was on the Acorn board. There is a free copy of cnc12 listed on the Acorn page and Marty's video shows how to set it up. I asked what else I needed and Marty said nothing and follow the instructions for the Gecko 203 drivers. You can also buy One of Gary's ready to go control boxes. You may want to watch his videos on how smooth the Shopbot can run.