Hi RedHotDiscounts,
While it is not necessarily possible to "disable" your Auctiva store, you can effectively make it so your customers will not reach it by removing the link to your Auctiva store from your scrolling gallery. If you are interested in doing this, please click the "Edit Scrolling Gallery" link under the "Store" tab within your account, delete the content of the "Click here to browse all my eBay items!" field, and save your changes.
I also reviewed your Auctiva account and verified that the scrolling gallery setting is disabled, so it should not be added to any new listing you create. The only listings that should contain the scrolling gallery are those that were posted when you had the scrolling gallery setting enabled, or re-listed versions of items that originally contained the scrolling gallery.
If you have any additional questions or concerns regarding this matter, you are welcome to contact our customer support department by using the "File a Support Request" link on our help page:
http://www.auctiva.com/free-auction-software-help/help.aspx-Mike