I recently purchased a new DivX certified DVD player and have been attempting to burn DivX Disks that seem to yield poor quality during playback. I downloaded the newest DivX Pro 6.5.1, but noticed that the old codec's are still on my system. Is there a method or a need to delete these old DivX codecs/decoders so that my system will start to use the newer codec. I've been using Toast to trying both the Burn DivX disk, and also just burning a data disk with the divx files on a dvd.