The first thing you've got to do is remove those images/movies from you're site and find the treand that you where just mentioning and e-mail it to the lawyer who wrote you.
He clearly mentioned that this is in fact a warning - so just remove the shit from you're site and give him a call.
Next, be sure to tell us who sold you those pic/movies so we can have a little fun with him to.
And finally, download
www.kazaa.com and get those pic/movies on every computer that will swallow them.
Regards
NastyJack