Today the ./debian dir on the cvs was nearly completely replaced. To create .debs from after a cvs checkout simply enter the ./debian dir and use dpkg-buildpackage. The resulting .debs are versioned 1.3-2 by now. Thanks to Tim Peeler for the initial work on 1.3-1!
We'll provide ready-made .debs and a Debian repository soon, meanwhile you could use one mentioned here: http://blog.derjohn.de/snipsnap/space/start/2006-10-29/1
There is also a proof-of-concept ISPMan configuration system in /usr/share/doc/ispman-doc/config-services. It is designed to patch all necessary config files of a freshly installed Debian Etch to make it work as "all-in-one-ispman-box".