How to assign a custom task to an event that has not yet o..

Hello,

What is my problem ? I would like to configure my machines by creating a
custom task who would send a message or start an application (not determined
yet) when a hardware error event, like SMART error, occurs on the machine.

I have followed the instructions from the pages :
http://technet.microsoft.com/en-gb/windowsvista/aa906020.aspx
or
http://www.petri.co.il/assigning-custom-tasks-to-events.htm
but I can get what I want because you always have to refer to an event that
has already occured on the machine.
It is confusing because you can read on technet : "it can be used to
automatically notify a support professional when a critical event—for
example, a potential hard drive failure—occurs on a client machine" but how
do you do that ?
The events I want to be alerted about are hardware failure so they have
never occured before but I would like to be able to create the tasks.

Can, please, someone help me on this ?

Thanks in advance.

Marc.