Box2d Raycasting?

Im tring to work out how i can simple raycast between two objects, and detect if the raycaster is hitting that object or not?

Thanks
Andy

Bumping this, since I'm also having problems raycasting. (Box2D 2.0 beta extension)
How does one do it, exactly? I'm sure there was an example for it, but I can't find it.

C'mon people!

There's an example in the extension package, but I forget if it's in 2.0 or the first one.

Well, chucks. I found the testbed.mfa, it didn't have it's own folder within the example folder. It just laid there by itself. *facepalm*

... Thanks! :P