Its free to use but you wil see the sign (left top,see image)
This settings.xml is included ,see example image below.

In the WB Extension you can upload the images and write the text ( discription)+ link to a internal or external page.
The settings.xml can you build on the developer page and copy/paste in the extension builder file settings.xml to build a new .wbx
From the developer page:
After buying the image scroller ( to remove the sign) you have to replace the demo flash file with the original flash file.

Download for WB 6.5
http://www.mediafire.com/file/mzmmgmmmm ... _valid.zip
You have to know how the ExtBuilder works to change the layout,or make this your first project .........

Developer website.
http://www.flashxml.net/image-scroller.html