I want to use the face and custom hair from my old Oblivion character for nehrim. I know I have to use the CS but does anyone know the full procedure or at least show me a link which describes the process. I can't even find my character in the CS.

I dont know how you dod this, but i know the CS isnt the tool you need, it cannot edit saved games so has no way to get your character infomation.

Im thinking Wyre Bash might have a way to transfer character faces between saves.