As I was installing the serial cable on my computer for eventual firmware upgrade to the hand controller, I started looking at the manual for the computer control software. I have no immediate plans to use the computer to control the mount, but thought I'd install the software just to satisfy my curiosity about the user interface and various controls. Well, the included CD was cracked, broken, and not useable. I have emailed the seller, High Point Scientific, asking about a replacement. Stay tuned for their response. BTW, I got this mount for $1250.00, with free shipping. It was sold at a discount for no reason other than the factory seal on one of the cartons had been breached. It is brand-new and under warranty. So far, it works flawlessly.