Hook object on another (physic)

Hi all, i have a question about physic behaviour,

i want to know how can i create an object that i can hook on another object ?

i tried with revolute joint but it doesn't seem to work.

the example i can give is in transformice.com

<img src="http://www.bladesquad.com/physicjoints.jpg" border="0" />

Have you tried the pin behaviour? You should beable to pin one of the objects to the other objects image point through the pin behaviour

not yet, but yes, it could be good idea, i'll try something with it.. thank's :)