The ASP.NET SQL Server Registration tool is used to create a Microsoft SQL Server database for use by the SQL Server providers in ASP.NET, or to add or remove options from an existing database. The Aspnet_regsql.exe file is located in the [drive:]\%windir%\Microsoft.NET\Framework\version folder on your Web server. You can run Aspnet_regsql.exe without any command-line arguments to run a wizard tha