CiviCRM Community Forums (archive)

I am looking at applications to make a membership area on a client's site.  Their current website is a Joomla site, and is quite extensive.  They want a membership area for paid clients, and this looks like a good fit, but before I install I would like to ask a couple of questions.  This can be installed as a module, right?  And it won't mess up all their current site?  They want the membership area only for paid clients.  The regular registrations would not be able to access the members only portion of the site.