I have a orion 8 in. newtonian telescope with synscan v5 firmware 4.39.15, connected to my computer with a usb a and b cord. Operation system is windows 10 . Just recently upgraded to Starry Night pro. I have downloaded ascom platform. I am confused which drive to use from the dropdown box choices.. I have tried eqmod ascom5/6 which gives an error code that it didn't load. Other internet article mention using skywatcher telescope. When I put in the values asked for and press ok then connect a new window starts to form and then the program crashes. So which of the choices from the dropdown box do I use? A step by step instructions on how to connect my computer would be great. Thanks Michael