Blabba from the site that everyone on nexus is scared of, released a alpha-nif plugin for 3DS Max 2013/2014 you can look it up on google, changes for Nif plugins released for newer versions of 3DS Max / Maya are almost null.
Uhm...i'd like to help but depends on what you need help with, for example i'm pretty good playing with textures(you know, creating / editing textures..) but not that good in CK..