Hi deviltronics,
When you sign up for an Auctiva account, the Auctiva store window will automatically be appended to your current listings. In addition, when you post new listings in the future, the store window will automatically be appended to them as well, usually within 4-6 hours of when they're posted.
You also have the option of placing the store window wherever you'd like in your listings when creating them by pasting the store window HTML into the HTML version of the description editor. You can access your store window HTML by clicking the "Store Window HTML" link under the "Store" tab within your Auctiva account.
If you have any additional questions or concerns, please don't hesitate to let us know!
-Mike