Thank you, Eric!
I'm feeling a little dense here, so let me make sure I understand...
On both the local and the live site, in Admin under settings, I do have Gateway set to None. But, as you know, my only options there are PayPal Payments Pro, Authorize Net, and PayPal Express. So there's nothing you want me to change there, right?
As for running the wizard again - which I have to do locally, then upload - do I need to remove the WA_eCart folder and replace confirm.php with a "clean" copy, then run the wizard again? Or is there a way to re-enter the wizard on the current confirm.php?
I'm so happy you replied... I can almost see the finish line here, and I'm itching to cross it! But I'm feeling way out of my league here ;)