ASP.NET SQL Registration
ASPNET_REGSQL.EXE is a great new application tool that comes with asp.net 2.0. It is located in C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\ and allows for such things as SQL Invalidation, the ASPNETDB installs, and for using SQL Server to store state information. I found the official article that details every little option. I personally prefer using the nice little wizard instead of the command prompt. You can easily just point to a db and install a user system in 5 minutes.