http://www.msnbc.msn.com/id/10878811/
As a comparison, Apollo 11 took 3 days to reach the moon.
Its utlimate destination, which it will reach in aproximately 10 years, is Pluto, the last planet we have not sent some sort of probe to. Along with exploring Pluto, NASA also plans to collect data about the belt of ice and other debris that Pluto exists in.