The first thing is, make sure your system support east asian languages (check the previous pages, I see someone already post about how to install east asian languages). That should do for the preparation.
backup your original models.pck (just in case)
the next step should be like this:
1. unpack models.pck
2. unpack the nude files
3. copy the unpacked nude files to unpacked models.pck
4. re-pack models.pck
5. copy the modified models.pck to your PW folder
(for detail instruction on how to do this, read the previous pages. you could also use the batch file, it's easier)
If you've done that steps, and still receive an error message, it's because the new element client checks for the additional information in the pck files. When you rebuild models.pck, this information isn't included. This information is located at the end of the original models.pck, the size is 268 bytes. You can use hex editor application to replace the last 268 bytes of the modified models.pck.
If you're not sure how to do this, you could use the application that I've created to change the information in the modified models.pck.
Enjoy!!!