Add a custom checkbox for threadposting?

[Brother Malachi]

Hello everyone,

In terms of php I know how to do this, but in terms of vB i'm clueless.

What I'm trying to do is add a checkbox to the post thread page and if checked it will invoke a different template for that thread.

My guess is I would have to hard code the checkbox, then add a new field for each thread mysql entry that specifies whether the checkbox was checked or not.

Via php that is very easy, but how would I do this using vbulletin? I've never edited vbulletin's php files nor the mysql db.

Is there an easier way to do this?