Small differences, it is the same story as before. The theme music has been changed, special effects improved upon, the nudity removed, a few scenes were added and existing ones altered slightly. One example of this last point would be an early scene, the one during which General Hammond is showing Jack O'Neill a Goa'uld staff weapon. The line "we can't figure out how it works" just before O'Neill expertly activates the weapon was removed. Minor changes, in other words.
