We are working on a generic post processor for a DMG Mori CMX Mill with a FANUC control. This post supports 3-axis, 4-axis contouring, and 5-axis positioning variations of the machine. We would be happy to get some feedback from you before we put it into production.
Feel free to download and test these post processor and provide any feedback you might have.
http://cam.autodesk.com/posts/?p=dmg_mori_cmx_fanuc