This tutorial describes how to use a model of created bow (either created from scratch in 3DS or imported from elsewhere), and skin it to the armature imported from original bow files. Then export the skinned mesh, and finalize it in NifSkope. And add to the game with the help of Creation Kit.
Permissions and credits
Credits and distribution permission
Other user's assetsAll the assets in this file belong to the author, or are from free-to-use modder's resources
Upload permissionYou are not allowed to upload this file to other sites under any circumstances
Modification permissionYou are not allowed to modify my files, including creating bug fixes or improving on features under any circumstances
Conversion permissionYou are not allowed to convert this file to work on other games under any circumstances
Asset use permissionYou are not allowed to use assets from this file under any circumstances
Asset use permission in mods/files that are being soldYou are not allowed to use assets from this file in any mods/files that are being sold, for money, on Steam Workshop or other platforms
Asset use permission in mods/files that earn donation pointsYou are not allowed to earn Donation Points for your mods if they use my assets
Author notes
This author has not provided any additional notes regarding file permissions
File credits
This author has not credited anyone else in this file
Donation Points system
Please log in to find out whether this mod is receiving Donation Points
This is a bit more advanced tutorial...
It describes how to use a model of created bow (either created from scratch in 3DS or imported from elsewhere e.g. from the mods made for Oblivion), and skin it to the armature imported from original bow files. Then export the skinned mesh, and finalize it in NifSkope. And add to the game with the help of Creation Kit.
This tutorial is related to all versions of 3DS, though the process which it describes has been tested on 2010 version of MAX.
UPDATE: At picture with 3DS MAX export settings in this tutorial there's one option checked when it should not be - Generate Partition Strips in Skin Modifier section - it's better to turn it OFF.