Scripting Mail account setup for Exchange?

A lot of our users will switch over to the central Exchange service in a couple of weeks, and we’re thinking about ways to ease the migration. One thing that would help a lot would be if we could send out a configuration script that sets up a new account in Mail for them, automatically setting up all the tricky little details. AppleScript sounds like the logical choice, but the account object doesn’t even have Exchange as a valid type (valid values are pop/smtp/imap/Mac/MobileMe, r/o). I don’t dare to hack away at the plists directly as there’s way too much that could go haywire.

Has anyone here done anything like this?