Ok I have poured over my manual for my Casio as well as for my Yamaha interface cord manual. I also downloaded the Casio Music Database Software. I am still trying to get my PC and Casio to "communicate" with one another. I think something has to be done with the channels? I have downloaded the drivers on my computer. The connections are right I believe. Midi in/out on the back of the Casio to USB on the computer. Can someone help?