Hi, all! I often use TheSky linked to my laptop with an RS-232 cable using the laptop's serial port. Last month, my laptop went to the great Mother Board in the Sky and I had to get a new one. The new ones don't have serial ports, just a zillion USB ports. I know that there is a way to convert an RS-232 serial port plug to USB, but I don't know the part numbers or the steps in the process. Does anyone here have any experience with this problem, and if so, can you direct me to the part numbers and a source so I can get the laptop and C-11 back on speaking terms again? Thanks in advance! Dick Harshaw Phoenix, AZ "This is the most beautiful and satisfactory explanation of creation to which I have ever listened." -- Albert Einstein, on hearing Georges Lemaitre expound on Lemaitre's formulation of the early "Big Bang" theory