MICROSOFT SQL SERVER 2005 SERVICE PACK 3

Service Pack 3 for Microsoft SQL Server 2005 is available for download from December 2008.  SQL Server 2005 service packs are cumulative, and this service pack upgrades all service levels of SQL Server 2005 to SP3. You can use these packages to upgrade any of the following SQL Server 2005 editions:

Enterprise
Enterprise Evaluation
Developer
Standard
Workgroup

You can download SQL Server Service Pack 3 and get more information using following link:

http://www.microsoft.com/downloads/details.aspx?FamilyID=ae7387c3-348c-4faa-8ae5-949fdfbe59c4&displaylang=en