I need a quick run through on how to add a new hair style into the Creation Kit and how to assign it to my modified Breton race (for example).

I also added a new hair color (white) and assigned it to my race but it's not showing up for my custom NPC who is assigned that race. Not sure why.

Anyway,. any help with these two issues is greatly appreciated.

I done this before when the CK just arrived, you may want to check this:

http://www.gamesas.com/topic/1345395-hairstyles-issues-on-new-race/page__fromsearch__1

I figured out my hair color issue. Solved. Now as for the hair, this is Soya hair from Oblivion that came with the MTOH mod. Apparently the author never put a .tri file in so that's causing all sorts of issues. There's just the old dds files under textures. Meshes folder contains the nif file but no tri file. I can't figure out how to add it as a new "headpart" without that file.

Here is the mod in question.

http://skyrim.nexusmods.com/mods/7400

Hopefully this will help someone else. I got the hair in. It turns out the tri file is not required. Just the nif for the hair and hairline.