Step by step: Configure the 2007 Office system for a hard disk image
TechNet has a good article on how to use the OCT for Office 2007 install. This takes the place of the Custom Installation Wizard found in previous Office Resource Kits (ORK).
Nov 21
Using the Office Customization Tool (OCT)
Permanent link to this article: http://www.evansthompson.com/blog/2006/11/21/using-the-office-customization-tool-oct/