My memory is very hazy with this one, its probably around 20 years old...
Can't give you much to go on, but I remember that you are the captain of a spaceship and at the start you choose your crew (from different species). Seem to remember there being a sense of humour to the game.
Think its old ega graphics, and there is a trading element to it..
You give each crew member orders from a predefined list.
sorry for being vague but I only just remember it.