CAREFUL with editing scheduled listings on Auctiva. I once edited my listed scheduled to go out in 10 mins time and 2 ads got submitted instead of 1. I think there's a glitch. If you schedule a listing and want to edit it, make sure there's at least a window of time of 30+ minutes.
It is already active. I used a free template. I think you have to know HTML to edit things with a template. The Auctiva edit kicks you right into your ebay revise page, but the whole template and counter is in the description box.
I also don't know if the shipping calculator is correct. It says insurance included, but I do not trust it.
You don't have to use html. There is a place where it asks if you want the window at the top or the bottom. I have to leave right away so I can't look right now and tell you exactly where it is but if your question isn't answered when I get back I'll have a look then.