Here is a blog, i think that's may help..
http://blogs.vmware.com/vipowershell/2009/09/how-to-run-powercli-scripts-from-vcenter-alarms.html
Here is a blog, i think that's may help..
http://blogs.vmware.com/vipowershell/2009/09/how-to-run-powercli-scripts-from-vcenter-alarms.html