Hi there!
  I have looked almost everywhere I could think of and found some things, but nothing to answer this question. Hopefully someone will be able to help out.

I have no idea how to make INJ/REM files for V4. I have found tuts on V3 and Millenum 3 characters but nothing for V4. I tried using Injection Pose Builder, but V4 is not in the list.

Anyone know any good tutorials that answer this question or maybe can help me out?

Thanks so much for reading! :)