After working on a project that had me write a custom Role Provider for WSS, I thought I would try and help explain some things about what Membership and Role Providers do, and more specifically in regards to SharePoint.First off, in my case, the user store was Active Directory. When working with MOSS, you can use the LDAP provider for both membership and roles. In WSS however, there is only a default Membership provider, which does not allow for groups to be used, say AllUsers or Domain Users. Membership Provider – Looks at a user store to find the specific...