no because its header is different and we cant recreate the same .rez header.. of course if you extract the .rez file you can simply place all the .dtx file in a folder named the same as the .rez was named and remove the .rez from your game folder and put in the folder i was just talking about and it will read it.. but u still need to convert the .dtx files back to nexon (example: if u edit the .dtx files that were in Chars_t_body.rez then name the folder Chars_t_body)..
Also if you are just editing textures the only open the "_T" files not the "_M" files.. the T is the texture files the M is the model files..