Before you try the conversion procedure, I recommend checking the Configuring_system.htm file that's located in the installation folder. However, this file will be opened automatically when you install the application. Additionally, there are other instructions before the actual conversion will take place.
Download the application through the download page at Software Informer and install it. At the end of the installation, options will be presented to you.
Download page: http://avro-converter.software.informer.com/download/