Generally, to get a good reply, as I mentioned above.. You should be posting this in the "Help!! For pepakura" thread in the noob forum. There is not a lot of exposure on this thread, so you may never get a reply!
But I found the post and I am replying!
If you want to unfold, it's a bit of a time consumer but it is doable. The program "Pepakura Designer" has an unfolding system. Generally you import the model, click Unfold, and it does a really cruddy unfold job. Then you take the zipper tool and break apart the model into manageable pieces! If you have further questions, definitely ask on the Help thread I mentioned above, there are more people who check that one than this so you will get a fast response from many people.