If you are looking to add GNS 530 for you flight simulator, please check out our FlightSimBuilder GNS 530. Here is also a link to a great review of the product https://www.youtube.com/watch?v=rPgfMltXpY0 :
Free Garmin 430 and 530 PC Simulators to Save you Money on Fuel - Hangar.Flights
Garmin 430/530 - Free Training Video - Flying the POGGI2 SID - YouTube