I found an " add-on " if can call it like this,that will allow you to use chars downloaded from Mugen China,like M_silver or the recently released M_Shen Woo by MDK.
Go here:
http://four.fsphost.com/choujin/mugen/zip.htmThen download the zlib.dll file that appears and replace it with the one that came as the default mugen folder(IT DOESN´T GO IN DATA,JUST A REMINDER)
I hope this can help the ones who didn´t know about this file ,that allows compatibility for those special zip files that some creators like MDK use
(NOTE:don´t unzip the char...put it into the select.def as "char name".zip.it only works with Winzip files...)
Edited by sfadsad to make the link actually clickable...