Add-on Post Warning

Hey guys,

I'm looking for an addon that will warn a member who's tryin to create a new post on a specific thread.
Is that possible?

Thanks in advance,

Just imagine me creating a new thread under the "Resource and Add-on Requests."
To do this ill have to click the button "Post New Thread". When ill click on it it will direct me to the normal page where ill put the title and msg BUT before that i want a warning/notification to popup.
And this warning will only popup when someone creates a new thread for "Resource and Add-on Requests. "

Hope this makes sense :)