Over on msexchange.org, Rui Silva published a great article on monitoring Forefront Security for Exchange with OpsMgr 2007 so in case you missed it you can view it here. He also has a great guide on Monitoring Exchange 2007 With System Center Operations Manager 2007. Both of these are great how-to guides with detailed walk-through's and plenty of screen shots to demonstrate the process. To give you a small taste I have the intro below:
Manageability is the key that sometimes can make the difference between a good product and a great product. Fortunately, for the vast majority of Microsoft products, operations and management are a key concern from the very beginning of the development stage.
System Center Operations Manager (OpsMgr) 2007 is the heart of Microsoft management & operations strategy, a product that enables greater control of the IT environment, by means of dedicated Management Packs (MP), a collection of rules, tasks, and scripts that work together to maintain the overall health of the systems.
J.C. Hornbeck | Manageability Knowledge Engineer