RB wrote:
I'm looking for an online or downloadable program which gives range and
relative bearing between two points (point A to point B). Would appreciate
any leads to one of these.

To use with what system?

It's hard to imagine that if your computerized nav system doesn't
currently allow you to determine the distance between any two points on
the screen and their relative bearings you will be able to find
something after market is going to make that feasible.

(The use of the word "range" is more typically applied when measuring
distance from the observer, but might still be Ok when describing the
distance between two remote points).

Or are you thinking of general geographic points? (Example: West
Gumshoe Village is
35nm south of Henry's Ford, on a rhumb line of 171 t?) There are a
number of online sources for distances between towns and cities, etc---
(just google in 'distance from New York to Chicago')-- but I don't know
where you'd go for relative bearings.