I found this nugget of a tool today.  I haven't tried it out yet, but it sounds like one terrific tool.

http://www.microsoft.com/downloads/details.aspx?FamilyID=8C0F970E-C653-4C15-9E51-6A6CADFCA363&displaylang=en

The SQL Server Management Pack monitors the availability and performance of SQL Server 2000 and 2005 and can issue alerts for configuration problems. Availability and performance monitoring is done using synthetic transactions. In addition, the Management Pack collects Event Log alerts and provides associated knowledge articles with additional user details, possible causes, and suggested resolutions. The Management Pack discovers Database Engines, Database Instances, and Databases and can optionally discover Database File and Database File Group objects.

Feature Summary:

• Active Directory Helper Service
• SQL Server Agent
• Backup
• Databases and Tables
• DBCC
• Full Text Search
• Log Shipping
• Clustering
• DB availability
• Replication monitoring
• Agent jobs
• Backup Query Engine
• Replication
• Web Assistant
• SQL XML