Forum Rules

List them in a post, and link to this post from the sidebar, much like the Lefora FAQ here. Use the Web Links widget to put the link in your sidebar.

Thanks-

what about not allowing members to create new fourm topics but just respond to the ones I create?

You can set categories to Admin Only - do this from Forum Admin > Categories. This allows only admins to post new topics, but will allow all members to reply to these topics.