Reply #2: You don't

[Monkey see Monkey Do]

I haven't seen this film since it came out on video and haven't read anything about it for just as long, but at the time it came out there was a big debate in the letters page of the UK film magazine "Empire", which resulted in a couple of features about who was what. Bryan Singer was interviewed and said that Kint is definately Soze, but a lot of fans pointed out various things which challenged that (I honestly can't remember what these were, but it did involve stuff that didn't make it into the final cut - perhaps that's on the DVD?). IIRC, Gabriel Burns was interviewed and said that he thought he was Soze for most of the shooting of the film, which is quite interesting although again, I can't remember his reasoning. I ended up settling on the Kint is Soze side, but I'd really need to see the movie again to tell you why.