This question is two-fold. If the question regarding setting the authentication modes while installing SQL Server, its two modes. 1) Windows authentication mode(allows only windows user/pwd) 2) Mixed Mode (allows either Windows user/pwd or SQL login user/pwd). If the question regarding connecting to SQL Server after installation, then again its two modes 1) Widows authentication and 2) SQL Server authentication. In the later case you would need to supply with a username/pwd created in SQL Server. For more information refer: and refer this if you need to connect to SQL Server from ASP Until unless required specifically, better use Windows authentication. Shd you have any questions, write me back. -Venu |