Hi jamiehodson,
Welcome to Auctiva! While it is possible to apply Auctiva's supersized image functionality and other design features to your listings that were not created through Auctiva, it is a fairly cumbersome process that essentially involves recreating those listings through Auctiva. If you would like to revise your listings in this manner, you can do so via the following process:
1) Recreate the listing in Auctiva and click "Save". Since you will only be revising the item description, it is only necessary to fill out the “Item Details” section of the lister page.
2) Once you have finished, click the "Save" button.
3) Return to your Saved Listings page and click the <HTML> icon next to the listing.
4) Highlight and copy the HTML that appears in the pop-up window.
5) Scroll down about 1/3 the page to the “Description” section and click the "HTML" tab on the editor.
6) Delete the html that is already there, paste the copied html in its place, and save your changes.
Any additional questions or concerns? Please feel free to contact our customer support team using the appropriate link on our help page:
http://www.auctiva.com/free-auction-software-help/help.aspx-Mike