Hi Kwakkelde!
Thank you for your time
I got the skeleton ( and default mesh ) from SLAV plugin ( free edition ) , loaded in MAX 2012 64 bits. After this, I modeled this simple body from a box, and poligonal editing, over the model that SLAV made.
I used resetxform to reset al transformations in my model, and use SKIN modifier to add 26 bones.
Its very strange this offset of mesh, because ihave not made any transformation of it.
I´m working now, but in a time, i will upload a video to vimeo