My advice- just setup and export your hair like a helmet. don't bother with that tutorial.
hair is just a fancy hat, But with 2 meshes, hat and nohat, 2 egm files to correspond to those 2 mesh objects, a special shader, a special texture, and with vertex color.
Anyway, if you are intent on using that tutorial, you are going down this route, you can probably figure it all out from this topic http://www.thenexusforums.com/index.php?/topic/235241-hair-conversion-from-oblivion-to-fallout-3-gone-wrong/page__st__10#entry2105805
hopefully that saves me from having to type out stuff that is pretty straightforward from looking at any working hair nif. >if all else fails, just look at a vanilla hair. It's basically just a hat!