Paul,
Maybe this link might help. I too am looking at connecting NGC-Max to my PC.
http://www.grecner.cz/astro/starryni...avigator_e.htm
and this seems to be what you need to do. AN can be set in various com's modes, you then set the ASCOMM platform accordingly.
http://tech.groups.yahoo.com/group/A...k/message/7046
Regards
Fahim