Visual studio 2005 comes with a project that lets you use the asp.net membership provider to look up, add, edit, and delete users and roles. It unfortunaltly can't be used online, and in order to have an adminiistration area in your site, it appears that you have to code your own admin interface.
Is there an opensource, or free project that has the functionality of netwebadmin, but can be used online?
You might want to have a look at this project on codeplex http://www.codeplex.com/AspNetWSAT, which has an admin interface that you can use. I think there are a few other similar ones around too.