I have spoken with the original author of the scenario and map editor tutorial. I or Ratzki can upload it to "The Blitz" for other memeber's use. You can also get it now at the Battlefront Repository or just let me know and I'll email it to you or anyone that asks. It is done quite well and will get you up and running in making scenarios and maps for CMBN.
Just remember, it was originally written for CMSF so you will see CMSF referenced all the time, including screenshots and such. Since both use the same game engine, just substitute CMBN for CMSF and you will be fine.