How to import Box2d functionality in HelloWorld Project ??

well i have looked this[1] link and it describes how to use it but fails at where to implement the code i.e. do we need to include some other files for box2d or cocos2dx will take care of it ?

Mates one good basic walk-through explaining how to set-up box2d for c++ with eclipse. [i am asking how to import the box2d functionality in my HelloWorld project,what are the steps needed]

NOTE: i know how to use box2d but how to implement it in my project ?

[ i am on windows7 64 bit,ndk r8b,cocos2dx 2.0.1 and with eclipse 3.7 ]

[1]http://www.cocos2d-x.org/projects/cocos2d-x/wiki/Box2D