Hi William,
1. The output resolution set in VE Author affects printing only.
VE Viewer will dynamically scale Viewport depending on current screen resolution.
2. Aspect ratio set in VE Author will be preserved in VE Viewer.
It is import to set correct aspect ratio in VE Author and use "Show output size" option when authoring steps to be aware of "always visible" area of Viewport.
thank you,
Vladimir Noskov