Ah, maybe I wasn't clear.
When the button is clicked, I want it to leave Acrobat and show an actual file highlighted in a Finder window. This only needs to work on a Mac, as we are an entire Mac based environment.
In a sense what I need to achieve is the same functionality as when you click on an alias in the Finder environment and choose 'Show original' from the contextual menu:
That's a shame, but thanks anyway for your quick answers.