There are a few articles and a lot of sample monitoring scripts we have written over the last couple of years since OpsMgr 2007 was released. By request, here is a list of many of the instructional articles along with their related sample script downloads ( in one place for reference):

Scripting-related Articles and Posts

• OpsMgr: Writing and debugging OpsMgr 2007 scripts outside of a live Mgmt Group
• SCF Scripting Series Part 1 - Converting MOM 2005 Scripts to OpsMgr / SCE 2007
• SCF Scripting Series Part 2 - Custom Performance Objects
• Scripting Series (Part 3): Debugging Runtime Scripts for OpsMgr and SCE
• Using the Property Bag with Custom Scripting in Operations Manager 2007 <—This is the big article on the PropertyBag and custom Performance data'
• How to create a Script-based 2-State Monitor <—This pdf illustrates how to get your OpsMgr scripts into a monitor
• Scripting Tip: Valid Event ID ranges when using the MOMScriptAPI.LogScriptEvent method

Sample Downloads (to go with the articles above)

Remember to login to get to the Downloads (registration and download is free)

• SCF Scripting Series Mgmt Pack - Part 1
• SCF Scripting Series Mgmt Pack - Part 2
• Script: Registry Value Check for use in a 2-state monitor in OpsMgr 2007
• Script: Windows Service Configuration Script (Service Startup) for 2-State Monitor for OpsMgr / Essentials 2007
• Script: File Version Check Script for 2-State Monitor
• Script: Windows Process Monitor for use in a 2-state monitor in OpsMgr 2007
• Script: File Count Monitoring for OpsMgr 2007
• Script: Query Value from SQL Database (for 2-state monitor)
• Script: Query Value from SQL Database and Log Event 
• SQL Database Backup Monitoring (for 2-state monitor) 
• Monitor File Age for Multiple Files (for 2-state monitor) 
• Windows Script Host Version Check  
• Local Port Monitor 
• Windows Service Recovery Monitor