[HELP]Add new Animations to Character?

[Animation]

OK I have tried at least 3 methods to add new animations for my character.

1.use Blender and M2mod ,failed (come up with "no skin")
2.import .M2 to 3dsmax and export .3ds then use 3DSTOM2 ,failed (broke down)
3.import .M2 to 3dsmax and use NeoDex .78b export .mdl ,failed (unknown error)
4.use .M3 exporter and come up A BIG ERROR!

If I want to add absolutely new model with its animation ,what should I do? Editing Animationdata.dbc? and the bitmask in it?

Puzzling.

[dasde]

First of all, welcome to the forum. Secondly you are posting in the wrong section, post in Questions and Requests. Thirdly, I dont know how to do this, but I imagine you should use PyModelEditor, but again, I have no clue