There are many different versions of Star Wars, but most of them have been burned by George Lucas. Everytime he did an update he would try to get rid of the old version. To this day, most people haven't seen the original at all, and those who have seen it have since forgotten it. That's pretty weird to think about, but who cares? We love Star Wars no matter what version we've seen.
If you have any of the VHS copies, that's awesome, but if you can find any of the original edits, then you're set. Please make a DVD recording if you own it. The fans deserve to see the original cut. I don't mind the newer versions, but you can cut the Jabba the Hutt scene from 'A New Hope.' That was a trash addition.