Do you have to format that as MPP file? Or is that you want to store the data into a MPP file so that it opens right with MS Project?
I am not sure what format the data you export is going to be or will that open using MS project. You can try using BCP to get that exported. Just have the file name to have an extension of .MPP
hope that helps.
- Vijay G
Strive for Perfection