First off, do you have the latest version? Go to "www.cdspeed2000.com" and download version 4.01 if you don't already have it. You can use this as a standalone tool, but if you want to it work within Nero, place it at "C:\Program Files\Ahead\Nero Toolkit".
Second, did you read the FAQ at http://www.cdspeed2000.com/go.php3?link=faq_dvdspeed.html. If not, please check it out.
Are you using the same drive (your Pioneer A09) to run CD-DVD Speed that you also burned with? Using version 4.01 with your burned disc in the drive, are you sure you have the right DVD Drive selected at the top? What exactly happens when you click on the "Disc Quality" tab? What exactly happens when you click on the "Start" button?