You can use the Security Assist access page manager and rules manager with these pages to allow and restrict access to pages on your site. When it comes to the user registration pages that you have from the Solution Pack are they not working as you would like? I'm not sure if you are just trying to get these pages working or if you are trying to recreate the functionality on them with Security Assist. Please post back with some more info about how you would like things working compared to what you have setup now.