管理员与用户页面。最好的设置方式？ ASP.NET C＃Membership Services

I have a set of unauthorized pages that anyone can access (mainly the register page). Once a user is registered with personal info and group info, I want them to be admin, they then can access the authorized pages. On the authorized pages, I have a add member page, which creates a new user and that user inherits the admins group info. These people will be regular users and I don't want them to access the add member page and other select pages.I have a set of unauthorized pages that anyone