You need to be more specific about what you are dealing with, particularly:
(1) Did you mean "Hurco" as the machine type? You have to also tell people what model and the controller type. I don't know about Hurco, but machines can change controllers from year to year (i.e. we have two machines from the same manufacturer, about two years apart; one has a Fanuc, the other a Mitsubishi controller).
(2) Usually your best bet as a start is to search for the file you're looking for, but to get anything meaningful you'll have to spell it "postprocessor". PTC has a library of postprocessors available, as noted in the responses to this thread: Anyone have 4 Axis post working on Wildfire 3?
I haven't noticed any postprocessor changes between Wildfire 5.0 and Creo, so anything that is used now should be okay for you.