Way to force "I agree" checkbox before posting in specific forums?

[kh99]

That's more complicated. It's fairly easy to do for posting because there's already a mechanism for checking for errors and going to the "go advanced" page if there are any, and it's a one-time thing. To do what you want you'd have to create your own way to decide if the user had accepted or not (because you don't want them to have to click for every page). You should spend some time searching for something like this if you haven't already. If you want to create it, you might look at how forum passwords work because it's a similar idea. Or maybe you can figure out a way to use the forum password mechanism, like make the password "agree" then change the forum password message to say "if you accept enter 'agree'".