If by revise listing, you mean one that you have posted on eBay already, I don't believe you can revise listing through Auctiva.
So on eBay look for the drop down list on right side of listing. Click on the revise listing, you'll be able to revise your running listing from there. Also you could down load Turbolister from eBay and revise and edit your listing that way too.
You'll also find out that things you choose on making your listing here don't make it to the post on eBay, one that I know of is "Combined Shipping Discounts" I have to revise each listing I put up to include "Apply my calculated shipping and insurance rule". I also select "Pay on pickup" using Turbo. Sometimes I use both Turbolister and the Revise listing from eBay as each has some different features that the other doesn't have.
Revise listing would be a good suggestion for Auctiva to include in the future. Unless it's already there but I can't find it. Somebody could correct me if I'm wrong.
You could goto my listing to see what can be done by combining Auctiva, Turbo and Revise Listing on eBay.
http://cgi.ebay.com/ws/eBayISA...IT&item=260373113094