This guide will walk you through installing Zabbix 1.4.4 from source on Debian Etch. 1.4.4 has many improvements over what is currently available in apt, and it's not hard so you might as well do it this way.
Read it here
this walkthrough assumes that you will be running the zabbix database on the same machine as the frontend. You dont have to obviously, just do the mysql setup on whatever db server you are using and point the necessary things to it.