MC allows you to convert, create folders and file names and burn, in one step...
When you get to the "Drop Files Here" window, right click on it.
In that menu, you will see folder naming rules, and also file naming rules.
Set those, drop the files, and when you burn, the folders and filenames should be set on-the-fly at burn time.
This is actually an incredibly powerful and flexible approach to data disc burning that I believe is something that is totally unique to Media Center. If I'm wrong, please correct me
-marko.