You will need PHP compiled and installed on your system. You will also need MySQL or PostgreSQL setup. If you are planning on using the email system, you will need to have an IMAP server installed and IMAP support compiled into PHP. You can have it installed as an Apache module or command line version, the Apache module is preferred. We will assume that you are running on a Linux or other Unix system for these steps. Windows is supported, but there is no documentation for it currently. On Linux 2.2.x PHP 3.0.15+ / PHP 4.0.x Apache 1.3.x MySQL 3.22.25 or PostgreSQL 7.0.x Courier-IMAP 0.33+ and/or qmail 1.03 for POP3 access We have reports of it working on Windows NT and OS/2, and using Oracle as the database.