I'd have to take a look at the navX libraries to be certain. It sounds like they're pre-built VIs that you can use and you'd just like to have them show up in your palettes. The easiest way I can think of doing this is adding them to your user.lib folder (
http://zone.ni.com/reference/en-XX/h..._and_controls/ )
That would let you see them in the palettes, although they wouldn't be in the same palettes as your other FIRST functions.