I do not know what you mean by a "quick share DVD." Cab you elaborate?
If you mean directly editing the VOB files you can import those into PRE (definitely v9 and v10 - I skipped v8) but they will come in as raw media and you will need to add all your menus and menu markers again. When you Share, the entire project will be re-rendered - not a good thing as the VOB files are already heavily compressed.
For the future, get into the habit of using the Project Archiver. This copies all the assets and the project files used in a PRE project. This makes it really simple if you have the need to make a few extra changes after the original share.
Insanity is hereditary, you get it from your children