I just purchased the NS Membership plugin for multiple sites. I've been looking for a plugin for weeks to do just what this does.
On the webpage for the plugin it is listed as $32.99 USD but when I checked out I was charged $50.98. That's a pretty big difference. However, I don't mind the extra money if you can just help me do one thing. The plugin does exactly what I need it to do except it doesn't allow for someone to register a new account and evidently the URL you refer to in the documentation on the Joomla site comes back as as missing.

I have the registration module active I just need to know how I get that to show on the logon screen.

Thanks.