Howtoforge posted a guide about installing PowerDNS (with MySQL Backend) and Poweradmin on Debian Lenny

This article shows how you can install the PowerDNS nameserver (with MySQL backend) and the Poweradmin control panel for PowerDNS on a Debian Lenny system. PowerDNS is a high-performance, authoritative-only nameserver - in the setup described here it will read the DNS records from a MySQL database (similar to MyDNS), although other backends such as PostgreSQL are supported as well. Poweradmin is a web-based control panel for PowerDNS.

Installing PowerDNS (With MySQL Backend) And Poweradmin On Debian Lenny