Face detection code doesnt work

I am currently trying to find the face in a particular image.I am following this website : http://www.cognotics.com/opencv/servo_2007_series/part_2/index.html. I am following the code in this page.But i dont seem to see the option/part of the code to inclu开发者_如何转开发de my image[ am i supposed to change the argv[1] part in the code to my own image inorder to read my image]

Can someone guide me? Or is there any better face detection code available?

Thanks

You are supposed to pass your picture as a command line argument.