I need a program I can install in my www space will let family members log in and input their contact information and update if from time to time, and allow other family members to log in and see the rest of the family’s contact information. With out the rest of the world seeing it.

And ideas on how I can do this.

Also I am going to start a High school reunion site since this will be the last year my High school is in existence they are consolidating. And I would like to be able to so something similar. Maybe so they can e-mail members thought the site and not see their real e-mail address unless they approve it.

Thanks,
Grape