I am using DTdonate with Joomla 1.0.15 and Authorize.net. I moved my site from a /j subdirectory to the root to go production. When I was testing I thought I saw a confirmation message on a successful transaction. Now I go directly to the home page. I also put in the code to take me out of SSL when I return to non DT pages, I am not sure if it worked or not after that change.