Sue,
Yes, 6 hours (or more) is the norm for the listings to be pulled, updated with the Scrolling Gallery, pass security check at eBay, and reappear.
New listings submitted from Auctiva will automatically have the Scrolling Gallery included, when that feature is ON (default) in your Auctiva Account settings.
If you haven't done so already, here's some things I'd do before you start listing from Auctiva ....
1. Go to HELP at the top of the page and read through all the FAQs. There's alot of good startup info there.
2. At HELP, there are also Tutorials you can take. There are also a few sticky threads in the Forum with aids to new members of the Community (and this is a good group of folks).
3. Make decisions on what services you want to use or not use. Auctiva Insurance and Auctiva Checkout are two that always need consideration.
4. Double-check your Auctiva Account settings and make sure they are correct for the way you want to operate.
5. Ask questions in the Forum or via Support Case, if you don't understand a service or function.
Hope that all makes good sense.
Danno