or
1) Convert to warcraft III .mdx
2) Convert .mdx to .mdl
3) Edit texture path and copy necessary parts from nullmodel.mdl which is provided in Phucko1's tutorial
4) Open .mdl in mdlvis, set all anims to visible, save as .mdx
5) Drag'n'drop .mdx to mdxtom2converter_lazy
6) profit.
I could not make this .obj to m2 work properly, so it is not the best tool to convert models.