Hi Nick,
This is a bleeding-edge module, and to install it you actually need to be running the upcoming OpenMRS Reference Application. If your target is to run on OpenMRS 1.9.x, then I imagine you can load your current concept dictionary into the reference application, use this tool, and then export it back out to be used in your "regular" 1.9.x installation. Is that feasible for you?
I doubt that Jenn is on the implementers mailing list, so you should reach out to her at
je...@openmrs.org about the module.
-Darius