How to monitor Windows Server events with Centreon Nagios
Solution 1:
Here are the step by step instructions to Monitor Windows Event Log With Nagios.:
http://community.spiceworks.com/how_to/show/765-monitor-windows-event-log-with-nagios
The above tutorial is for server side setup for services. Instead server side changes, Check_MK agent checks is also the best way to keep monitoring services.