SQL Server 2008 Enterprise: A comprehensive data platform that meets the high demands of enterprise online transaction processing and data warehousing applications. Unlock SQL Server 2008 Enterprise with the following key: MQWT2-9MKBY-K8PXQ-6K4BW-TY4BD.
SQL Server 2008 Standard: Complete data management and business intelligence platform, providing best-in-class ease of use and manageability for running departmental applications. Unlock SQL Server 2008 Standard with the following key: XP4FP-3VTDK-37TWH-TW77J-9MFM3.
SQL Server 2008 Evaluation: Trial version to build and test any type of application. It includes all of the functionality of SQL Server 2008 Enterprise, but is licensed only for development, test, and demo use. (No product key is required to unlock. This is the default version).
Download : Microsoft SQL Server 2008 10.00.1442.32 RC0