To download Microsoft SQL Server Management Studio (SMS) please visit: http://www.microsoft.com/express/sql/download/default.aspx and click the download link that says SQL Server Management Studio Express.
If you run a VPS or a dedicated server and would like to run SQL Server 2005 Express edition, it can be downloaded for free from the same location.
Content retrieved from: https://support.appliedi.net/kb/a297/where-do-i-download-microsoft-sql-server-management-studio-or-sql-server-2005-express.aspx.