C#: performance Alerts

[PRR]

C#: programatically i wanna do
In Admin tools: PErformance-> Performance Logs and Alerts
i want to create "Alerts"

New Log settings...
Basically for printer (for testing if a printer prints more than 10 pages in one time, processor usage exceeds 50% )...
i want logs to be created in Windows logs... Event viewer... I guess they do get created automatically.. ..

now next thing is if i can do the above programatically ... how do i filters the logs ... so that i know which once i created?....

[PRR]

C#:

i want to monitor system for processor usage,memory usage, disk space etc.. and if it exceedds certain limit (processor usage >80) . write to event log... AS far as i know this is done using performance alerts... Can i do this programmaticall y?

[PRR]

C#: monitoring a system

How can i continuously monitor a system... for example processor usage have a threshold say 80%, if it exceeds create a event log for the same...Similarl y for other things like memory etc...
I have gone through performance alerts.... that is exactly wat i want... though i have not been able to do it using C#...