Like previously posted, the rear cabin is the easiest. There are probably about a dozen nuts that hold the interior in. I would get one of those ratcheting open end wrenches to do it as the space where some of the nuts are is super tight.
The front on the other hand is slightly more painful. I think the hardest part is finding all the self tapping screws that they use on the rear parts of the cushions. You have to pull the kick panel out to get to some of the screws on the drivers side. On the passenger side you can easily see them. I would mark with a piece of tape or something where the screws come out becuase you will quickly lose the hole because the carpet will just hide it. You then have to remove the cupholders and reach your arm up to where the nut is. This is probably the hardest ones to get to (two on each side...one behind the cup holder and one in front of it). There is also a single one in the front dead center. You can get to that one by removing the front center cushion and reaching up towards where the nav light is. Then the whole thing should just come out. There are some z brackets that the cushion hooks on but they are made out of metal. If you just lift straight up you shouldn't worry about breaking them.
Check out a thread I had on PN and it shows some of what I am talking about. I think at around page 8 there start to be some pics of the interior pieces. In some of them you will see the bolts that go through the hull. http://www.planetnautique.com/index.php?name=PNphpBB2&file=viewtopic&t=7874&star t=150&postdays=0&postorder=asc&highlight=