>Looks like I can't use application role with MM.NET. What is the recommanded SQL security modal when I use MM.NET? I can't use Windows Authentication because not all my users run NT Domain.

Are you creating a asp.net app or a windows app? With a web application you don't really need to use an app role, since you users don't really connect to the server, your application does via the aspnet worker task.

If you are using Windows forms with a two tier physical setup, I don't see why you can't use an application role.

BOb