Guide includes the following topics:

- Overview of model-based design

- Service models and understanding relationships

- Health models

- How Operations Manager implements models

- Discovery

- Changes between 2005 and 2007

- Customizing the out-of-the-box models

http://www.microsoft.com/downloads/details.aspx?familyid=3a633532-1dde-49b6-930f-7df50b69b77b&displaylang=en