Hi Bookabus,
In order to specify your eBay store categories when listing through Auctiva, you first need to update your eBay store categories in the Auctiva system. To update your eBay store categories in the Auctiva system, please click the “Ebay Settings” link under the “My Account” tab within your account, and click the “Update Store Categories from eBay” link.
Once you have done so, there will be two pull-down menus on the Auctiva lister page, directly below the category field, from which you can specify up to two of your custom eBay store categories for each listing.
Any additonal 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