Honestly, I can't remember too many specifics. Most of the changes were to the audio: originally the music I added was way too loud, and there were loads of poor bits where all the multiple audio sources weren't blended together well (like the foreign voices).

I remember adding a bit where the Trade Federation explain that Sidious was responsible for building their empire. Plus the Naboo invasion was changed a lot - stuff from a couple of the Trek movies added. Also, I think in version one I hadn't yet removed the midichlorians, but that's gone now.

I really hope you had version one - because I'm pretty sure for a while version two was on FE, and it would suck if you're downloading the same version twice.

Anyway version two is 1 hour 27 mins 1 second, so if that's the exact length of the copy you have then you've already got it.