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Hello.
To administrate users, you need only a forum and you can create groups users: members type A, member type b, mail lists. You can create specials areas only for members.
I have a club, I am the administrator. I use by the moment phpBB2 but I'm going to migrate to XOOPS when I have time to do this. Is not easy to migrate the database.
My website: www.patinar-zaragoza.com/forum is about fitness skating.
Regards!