Well i don't know exactly how to explain but i am trying. In my forum i get many threads in wrong sections and some against rules so need a lot of time in moving and deleting threads my questions are. 1. How can i add a "check box" like here on DP to ask user to make sure that they are posting in right section 2. How can i leave a link to forum rules in a line under this check box SEE THE ATTACHMENT
I am not sure of any hacks but if its not there you just need to edit couple of templates like New thread and Reply ones to add the checkbox there.
If you are a vbulletin user, you can ask over vbulletin.com and vbulletin.org to get help. If not, it could really help if you at least mentioned which forum software you use. When asking a question, you should really help people who considers answering you with such details.