trigger a VM reconfigure workflow via Event Subscription before the VM is Powered ON

Hi,

I am trying to trigger a VM reconfigure workflow to update VM hardware configuration. This reconfiguration requires the VM to be in powered on state. Now I unable to figure out which event should I trap/subscribe to ensure:

1. The VM is registered
2. The VM is not yet Powered ON.

I am aware that within my existng workflow, I can PowerOff the VM and then execute the reconfigure VM task. I just want to be cleaner and execute the workflow after the VM has registered by yet to PowerOn.

Any help or pointers would be appreciated.

Thanks.

Regards Shekhar