How can I use this to raise money?

The Two Dollar Challenge works like a Walk-a-thon, but because of its unique nature it generates more interest and the participants gain insight. Participants can either get flat donations or can be sponsored for each day they live on two dollars a day. These donations can come from friends, family, local businesses, or people walking past who want to know what the week is all about.

So I can donate the money to an organization I pick, or do I have to give it to the Two Dollar Challenge?

Two Dollar Challenge is a movement not an organization.  It is a movement about you; your experiences, your education, your causes. If you are part of a student group who is starting their own development initiative, fundraise for that! Already partners with an economic development or poverty related organization? Donate to them!