Hi TheMeltingPot1shop.com,
The Auctiva store and the eBay store are completely separate store fronts. Your Auctiva store is a collection of all your active listings (auctions, fixed price, and store items), that can be reached by clicking the "Click here to browse all my eBay items" link on the bottom right of the store window.
An eBay store is still needed if you wish to list "store" format listings and take advantage of the longer durations and reduced listing fees offered to eBay store owners.
I hope this clears things up. If you have any further questions or concerns, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx-Mike