In my opinion, and to keep things simple, you only need 2 pieces of software. They are FSSC 1.5.8 and FSNav 460. I will give you the best way to do it, but I must point out that an NDB, VOR or whatever is a theoretical object, i.e. it doesn’t show as anything in the scenery. You will have to place a mast macro there yourself.

1.      Get the EXACT (Big empathasis) Lat Lon co-ordinates + height ASL of your wanted Nav Aid.
2.      Open FSSC.
3.      In scenery Properties set the dimensions to those LAT LONS + your ASL and OK the box.
4.      Set your NDB up in the exact middle of your screen.
5.      Place a macro on top of it. I noticed that there was an NDB Hut macro in FSSC, so you are ok there.
6.      Save it as *.scn, then do an Export Wizard, checking all paths etc.

Next time you start the sim up it will do some stuff, then go into the scenery library and do your stuff. I won’t go into that here. That will then work in the sim.

If you want it in FSNav, then you must re re run your FSNAV DBC, which should be somewhere on your programs menu. Do a little waiting, and then go fly!