New Thread additions?

[colicab-d]

Hi I got a question..

Im writing up a hack which I dont want to reveal at this early stage but I need some info on the best place to add the ,ysql insert querie to add the extra data when making a new thread.

I have it so that when a checkbox is ticked it should have the value "yes"

So i really need to know where i would add

if($add_to_gall = "yes"){
mysql ( Insert blah blah blah);
}

so that when the thread is submitted values from the attachment are inserted into a new table like above.

thnx any help is appreciated and if i get this done i can move onto the second stage of my hack maybe throw up some screenies of it working