How do I walk and take the public transportation to get from one location to another?

There is a web site out there that is a lot like mapquest.com or google maps. But rather than telling you how to drive from one place to another it tells you how to walk and use public transportation to get around. So for NYC it would say something like, 'take the C train from Penn station to 59th street and then transfer to the D train and get off at Norwood 205th street'. Does anyone out there know that web site?

How do I walk and take the public transportation to get from one location to another?
http://www.trips123.com/trips123/plantri...

sage