I remember the one you are talking about.... I love google. I remembered 1 word from the game and came up with the title:

Star Flight
http://www.geocities.com/TimesSquare...tarflight.html

Now that was a cool game! Time to go see if I can legally download it for DosBoxer.

David

Edit:

Found it:
http://www.the-underdogs.org/game.php?name=StarFlight