Stefan Goßner released a blog series on SharePoint 2007 Content Deployment. If you are interesting in this topic, check it out.
Part 1 - The Basics
Part 2 - The Basics continued
Part 3 - Configuration
Part 4 - Communication
Part 5 - Quick Deployment
Part 6 - Logging
Part 7 - Change Token Basics
Part 8 - Job and Change Token
Part 9 - coming soon...
Part 10 - coming soon...
Part 11 - coming soon...