Microsoft Exchange 2003 Installation

We've recently ("we" being where I work) finished getting an Exchange 2003 server added to our Exchange 5.5 infrastructure. Installing the new version, at a glance, appears simple. We are a part of a larger enterprise, and are a site in the Exchange org, so could not install without using ADC's (Active directory connectors.) They are confusing at the outset, but are acutally simple. Care must be taken, though, to replicate the right LDAP entries, and to replicate them to an approprite place. It also turns out the installation of Exchange may not be simple. If all goes well, your AD design is simple, and the installer is an Enterprise Admin, then it tends to be simple. The ADC installation, though, must be in the root domain, hmmm. It's running fine, though. Some initial hiccups regarding strange security settings and some apparent glitches in the Exchange 5.5 LDAP/ACL Security. OWA 2003 is nice, the server is running, now we just need to move a pilot group in. Oddly, we upset the enterprise folks as they saw this as an offense to their takeover dreams. Oh, the politics.