You can use aspnet_regsql (found in C:\Windows\Microsoft.NET\Framework\v2.0.50727) to create the necessary database objects.
Once the database is configured you can use Web Site | ASP.NET Web Site Configuration (or something like that) in Visual Studio to manage your users.
Alternatively, you can use IIS 7 or up to manage them, create users programmatically (
http://imar.spaanjaars.com/QuickDocId.aspx?quickdoc=472) or build your own tools. The latter is explained in the BugBase chapter.
Cheers,
Imar