I defanatlly agree with TimC, get a copy of dvd decryptor. Even if you don’t use it for this, it is an invaluable tool to have. One warning though. After you install dvd decryptor, (cannot remember what the default is, I think it asks you when you install), disable automatic updates. Dvd decryptor use to be one of the best tools we had, but they got shut down by macrovision, and someone corect me if I am wrong, if you go to thier site, you are going to a site controlled by macrovision. I call it the final copy (the final version of dvd decryptor avalable), the final copy is still avalable several places, just disable updates.
Beyond that, it seems like a basic image file. Follow my advice or others (thier are several ways to do it and several programs that can do it). If you are still aving problems, please list what software you have for burning (including ver if possible and or if it is an oem copy that came with a drive etc, or a retail ver that you bought).