Got it. I can't believe this was it. After a year of sporadic infuriation with this connection. It is not serial/USB adaptor type biting me. It is not the proper use or setup of Autostar suite. It is not running netscope server in any way. You don't need either one. You simply run Envisage.
In Envisage, you click the telescope tab and enter your
comm port where it says NAME at startup. Then click 'connect'.
That's it, that's all, connected in two seconds showing version for the 497 and "Can Autoguide". Here I was, already half defeated as I plugged everything together expecting the same high blood pressure this issue has resulted in every time I've taken another swing.
I've made my entire night in the first minute. Cool!
Mike Weasner's Mighty ETX site is also indispensible for all things Autostar