Naive question #91 GNSS

A number of airports in Australia have GNSS/RNAV arrivals and departures. They use waypoints that have different descriptions to the conventional waypoints.
Is it possible to get GNSS navdata, either for particular airports or for countries or...?
I would love to be able to use GNSS procedures, but at the moment I can't see how to programme them into the GPS or FMS.
If it is easy please be kind..
Is it possible to get GNSS navdata, either for particular airports or for countries or...?
I would love to be able to use GNSS procedures, but at the moment I can't see how to programme them into the GPS or FMS.
If it is easy please be kind..