How does vbulletin write in the database?

[NolF]

Thanks for the help, but is not a query update what I'm trying to undertand and use, is more like newthread and newreply.php they don't use queries (as far as I can see) to get the info into de db. The problem is, I don't undertand how this is perform, although my guess and bet is on something on the lines of $vbulletin->GPC['newyear']) (for example). If it is this, I would appreciate if someone could explain me how it works, and if not, guide me to right path (how it is done).

thanks mates ^^