Check out the link in my signature.
It's based on the idea that the episodes generally happened in air date order. I;ve grouped multi-part episodes together starting with their first episode. I've also put These are the Voyages from Enterprise immediately after The Pegasus in TNG, and I've got the first ten minutes or so of Star Trek Generations after Star Trek 6.
I dislike the "stardate order" approach, because for example, a characters die and then come magically back to life if you go by stardate order.