Web cam with MSN

Obviously I would prefer to use Ichat but can the built in cam on the macbook pro be used for msn, or any other type of video program like skype etc....
Thanks

Is there some type of crack or other program that can run it

I have successfully used my iMacs iSight to communicate with my PC using Skype.

Skype automatically configures iSights, I just use that, being its free and is compatiable with almost all hardware under the sun.

I use...

I use Skype and a great fee to use program called Sightspeed. Sightspeed works between mac and pc, and runs at near 30Fps. I have chatted many many hours on end with my friend in America. i'm in the uk.