At the end of any of my threads, if you aren't logged in, that is the text that shows up.

You can edit this text (and just about all of the other label text) using the language editor in DotNetNuke. From your Admin menu, go to Languages....click on the site pencil icon open up the local resource files, desktop modules, active forums. In there you should see a shared resources file. Click on it and the main pane will load all of the resources for the forums. Do a search (CTRL-F) on "You are not authorized to post a reply" and edit it then update it. (you can use HTML in here to create a link to reg) This process will create a copy of the that original file with your changes for the portal you're working on. That ensures your changes will survive any module upgrades.

Also a note: there are two other versions of the "you are not authorized..." depending on the user's logged in condition and access to the forum. All three should be updated.

Thanks Steven!  I appreciate it.