Just my $.02, but this method (and Gosh's method as well) is quite antiquated! Have you considered trying the
Powerpacker by Siginet?I am very new to using Powerpacker, but I spent MONTHS on setting up the Gosh method, and incorporating some of Flyakite's method as well. In the end, I was able to get it working quite well, just in time to completely redo it because there were newer drivers and updates.
Using powerpacker I was able to complete a dvd in about 4 hours with the same stuff.