Virtuali, thanks for your last reply. I spent so much time outside the airplane trying to watch passengers, I didn't get into the cockpit and try to fly. I did fly last Monday, and low and behold, there are new, better radio voices for the pushback sequence. So you are entirely correct, my GSX 2 is active, and something else is wrong with my setup.
Your answer set me to thinking. I have a custom configuration for my Lockheed L10A, and I'm sure it's configured wrong. I won't have time till the weekend to try to fix and test it, but I didn't want you to think I'd ignored your advice, which I appreciate.
Here's where I think the config is wrong: The L10A has one door, just behind the left wing. The GSX graphic configurer shows a door in that position, which is clearly labeled #3. I mistakenly thought that meant I should mark "no door" for all the other doors (including door #1), and mark door #3 as the only active door.
I've now realized in FSX, the only active door on my L10A is door #1. The GSX configurer shows door #1 as the door just behind the cockpit in a generic passenger plane. I'm sure GSX needs to use the door (the only door) FSX recognizes for passengers and cargo, and that would be door #1. I need to go back and mark door #1 as the only active door, and then use the graphic configurer to move door #1 from behind the cockpit to behind the left wing, where the aircraft model has it.
This isn't a GSX problem, it's my misunderstanding of how GSX interacts with FSX, and how to use the graphic configurer.
Of course, I believe Murphy (of Murphy's Law fame) has a ticket to board my L10A. So I expect this will fix part of the problem, but I wouldn't be surprised if I need to fix something with the configuration of airport S39 before I actually see passengers...
Anyway, I wanted to acknowledge your answers to my problem, and thank you for them. When I finally see passengers, I'll post a recap of my problem, and the solutions that fixed it. It does look to me like my problems mimicked GSX not being active when actually it was active all along.
Gary