Lucas and Kanade optical flow algorithm

Hi,
I was trying to get the application (Lucas and Kanade optical flow algorithm using CUDA (LKCUDA)) from the list of cuda applications here on nvidia working.
But i just dont know how to use it. Did any of you try it?
Even if you have an optional (open-source at best) application to speed up this algorithm with cuda, please give me a link.
I’ve been searching for a working example 2 days and nothing came up :(

Thanks