I'm a programmer, not an 3D-artist and I'm trying to get the connection (between those two working areas).

Is there a way to apply an existing skeleton (e.g. /EsenthelEngineSDK/Data/Obj/chr/Warrior/body.skel) to a new (human-like) mesh?
If so, do I have to use the Mesh Editor or Blender / 3Ds Max to do that?

Thanks in advance!

You can setup skinning from a ready skeleton to a new mesh,
First use menu option "set automatic skinning" or something with a similar name,
then you can perform some manual adjustments in skeleton vertex paint mode
http://www.esenthel.com/?id=tool/mesh_ed...l_skinning