If you are downloading and running these Operations Manager 2007 management packs then it’s critical that you read the included documentation. There’s not as much tweaking as in the MOM 2005 days. But if you run Windows Server 2008 agents then you will have some patching to do, either before you deploy the agent or after you deploy it. Some of these updates prevent memory leaks. Some of them prevent false alerts.
If you have ConfigMgr then you can do this automatically. Create collections that target the criteria, e.g. “All Windows Server 2008 servers with IIS7 and the OpsMgr Health Service” and target that collection with a package(s) containing the appropriate update.
I’ve read through the documentation for the clustering and IIS7 management packs that include W2008 support. There’s a number of updates that I’ve had to download and will need to be deployed before/after agent installation.