A couple of questions on email registration and Unsubscribe:
You had mentioned to create a group and copy the code to you webpage to have users added to you mailing list database.
When I do that it brings up a user login page. I change the code from "subscribe.php" to "users_registration.php" and that seem to work although I have not actually registered test email yet.
To unsubscribe...I change the code to unsubscribe.php and the login page URL was this:
Does that URL actually unsubscribe you? and all you have to do is change the text stating so? and does the user have to enter their password to unsubscribe?
to change to look of those pages Is the CSS file "style.css"?