HI Stella,
Not sure if this is what your after, But you can change were stuff downloads to in your web browser, What you will have to do weather it's internet explorer or firefox, you need to go into your settings, and find the download options, there will be a tick box saying something along the lines of.."ask me everytime I download something". what that will do, is every time now you click a download it will open a window that will ask you were to download that file.
So I think you will be able then to down load your book to anywhere you want to, in your case, look for the ADE folder, which should be in your programs folder.
Hope this is what you need.
Just as an example, I use Firefox, and the way to change download settings there is....
Click preferences, then the general tab, in there you will see downloads, and a box that says "always ask me were to save files.