Hi Guys, well , see a video called
"XIE Free Jpg Compressor Vs JPG Image from NIKON D3X of 24 megapixels"
http://www.youtube.com/watch?v=kV1caKMFpgs
I download this tool (XIE) runnig by command prompt
http://www.willydev.net/XIE/XIE.ZIP
really is great tool, Win more of 40% by jpg, and i Have 25 GB in this files ..
Enjoy.