Adam,
Jim is correct about the Silma product. I believe that the Silma CimStation not only has a SDRC direct CAD interface, but it also can create Zeiss code. Contact one of the Application Engineers at 1-800-347-4562 to find out more about the compatibility.
Ray Admire
Lead Quality Engineer, CMM Programming
Lockheed Martin Missiles and Fire Control - Dallas
972-603-2074