What can a person do to have a site shut down for having illegal stuff, like, for example, a crack to a program? I should say MANY cracks to MANY programs, but there is one crack on this particular site that bothers me

. Not an FQ site, of course, but I figured someone here would know the steps to take to get this site shut down. I already wrote the administrative contact of the domain (crackstore.com) and the person taking credit for the crack.
A user of my program sent me the crack. At first I though it was a joke, then I ran it. That's when my heart sank. I have been throwing stuff, can't hold a cigarette still, typing so fast......
I'm very upset, to say the least... I don't know what to do. For every person that downloads that crack I lose $30.00!!! I would just love to put my hands around this guys.....
Never mind that. But how can I have a site shut down? I know it's hard to prove that a crack is illegal by itself, if it's not distributed with the program, but there must be something I can do!?!?
ANyway, there's more stuff I need to throw right now. I'll be back here when I've calmed down a bit.
Justin