Hi. I have a RV042 and need to block specific PC's / MAC addresses from being assigned an IP address. Is this possible?

I stumbled across this article about changes in DNS resolution that are effective on 5/5/10 here: http://www.theregister.co.uk/2010/04/13/dnssec/I then the java tool found on this website here: http://labs.ripe.net/content/testing-your-resolver-dns-r...