URGENT HELP: Dolby Digital 2.0 decoder for virtualdub needed!

Hi!
Long story... I am converting some mpeg 2 vob files from a dvd-video disc to quicktime mov format by going through virtualdub and a few intermediary codecs. At some point in the conversions, I need to convert the Dolby Digital 2.0 audiostream to PCM so that quicktime pro can understand it and interleave into the 264 mov file!

Missing link is a Dolby Digital 2.0 decoder or codec that virtualdub can use.
I already have an AC3 codec installed, but this does not work for this audiostream in virtualdub!

Any suggestions, or email a codec to chris@murray-systems.com

If there is an easier way that uses adobe after effects or premiere pro, please advise.
Many thanks
Chris