Download the DNS Server

Now that we have the Web service part out of the way, let’s get the DNS server squared away.
If You Have Windows
Use MooPS. It has a DNS server built in that is pre-configured for use in this hack.
If You Have Mac OS X or Linux
On Mac OS X and Linux, you can simply install Berkeley Internet Name Daemon, or BIND for short. Refer to the BIND documentation on how to download and install BIND.
BIND for Mac OS X can be downloaded from http://www.versiontracker.com/
dyn/moreinfo/macosx/658.
BIND for Linux is usually included with the distro, so check your install.
If You Have Mac OS 9
If you’re running Mac OS 9, get your hands on MacDNS, a very simple DNS server that will do just fine for hacking DNS.