There must be! It is described as "Video Editing & DVD Authoring Made Easy".
I believe that the .vsp file is just the project file and that you have not actually finished the movie! In VideoStudio 10, when you have finished editing etc, you have to go to the "Share" tab and "create disc" (or alternatively tools>create disc) and then that opens DVD Authoring Wizard and you just follow the prompts.
There is a pretty large .pdf guide (14.2MB)at click here, which if it anything like the one for 10, will give you cahpter and verse on what to do!