After poking around in Underdark - Realm of Northdark, I started to get nifty armor drops. However, I'm using Exnem's body mesh and Underdark's armors aren't compatible. Equipping them makes weird things happen. So I'm curious to learn about making the armor work with Exnem's meshes if possible. Can anyone point me in the right direction?
I found this http://niftools.sourceforge.net/wiki/Blender/Split_Oblivion_Meshes on splitting armor into multiple pieces. It might give you an idea of where to start, anyway. At the bottom, it shows how to fit armor to the body nif.
There are some good tutorials up at TES Adventures: http://tesadventures.com/forum/index.php. The http://www.teseyecandy.co.uk/forum/ forums had some well-written tuts by Ratchild as well, iirc.