Scott, THANKS!!! Once again you've helped me. No, I wasn't using the USB port in the back (which I guess is for the pedals), but I was using the same port I use for the stick memory. After looking at the manual more carefully, I realized that there was ANOTHER USB port next to it. What threw me was that the shape of the second USB port was different from what I was familiar with (I thought that they were all rectangular and flat). I should have used that second USB port, The laptop recognized the DP right away, installed the CASIO driver, and I was able to interface with Synthesia, the one software program I installed to test all of this out. My explorations continue, and thanks again! Sergio