How to make a paper plane that flies really FAR?

For my physics project, I have to make a plane that flies very far. It doesn't have to fly high, do tricks, etc. It just has to fly as far of a distance as possible. Can you give me a link to a website or a YouTube video or something, that has instructions as to how I can make an airplane that flies far. But here's the CATCH: I can't use scissors, and I can't add anything to the plane. It has to be made out of just paper.How to make a paper plane that flies really FAR?go here : http://www.dailymotion.com/video/xhyuh_u鈥?/a>