To do this I believe you would create a master zone named "." in your named.conf (comment out the default "." zone with the hints information). Then, create a zone file which contains a series of wildcard records for the IP that you want to have everyone directed to. If other people will be connecting their own computers to this network, then keep in mind that some people will use their own DNS settings (OpenDNS, Google Public DNS, etc.) instead of the DNS server issued by DHCP, so unless you're blocking DNS at the firewall there is still a way around it. An HTTP proxy server at your routing point might be a better solution if that is the case.
So to recap on my goals is to set up master zone to redirect all requests to local machine, and block external dns at the firewall.
I am not sure how to do this, I have webmin installed and bind 9..3.6 on centos 5.5, and running apache for the web server