Simply put, NPC Daedra replaces all Dremoras and Golden Saints in Morrowind with NPC versions. There are two additional ESPs included; one for Tamriel Rebuilt and another that reduces the soul requirement for constant effect enchantments to make up for not being able to get 400 point souls from Saints anymore.
This mod requires that you have both Westly Presents Aureals (also called Westly Presents TESIV Inspired Golden Saints) and Westly Presents Dremora (Markynaz) installed. All new graphics in this mod use resources from Westly's mods, and because I didn't manage to get in contact with him since he apparently never cleans out his in box, they are required as a separate download instead of included. Do NOT activate the required mods by Westly with NPC Daedra; activating Westly's Dremora and Aureal mods in addition to NPC Daedra will cause numerous conflicts.
Westly Presents Aureals can be found at:
http://planetelderscrolls.gamespy.com/View.php?view=mods.detail&id=7476
Westly Presents Dremora (Markynaz) can be cound at:
http://planetelderscrolls.gamespy.com/View.php?view=mods.detail&id=5019
http://mw.modhistory.com/download--10978
http://morrowind.nexusmods.com/mods/42289