Pre-requisites :
1. Uninstall all previous SQL Server express editions.
2. Download and install Microsoft .Net Framework 3.5 SP1.
3. Download and install Windows Installer 4.5 (important of you have pre-Vista OS).
4. Download and install Windows PowerShell 1.0.
1. Go to microsoft downloads
* SQL Server database engine - create, store, update and retrieve your data
* SQL Server Management Studio Basic - visual database management tool for creating, editing and managing databases
SQLEXPRWT_x64_ENU.exe
SQLEXPRWT_x86_ENU.exe
3. Execute the installation package (Start the wizard).
4. Once the "SQL Server Installation Center" wizard shows up, you will see links on the right :
Planning
Installation
Maintenance ...
5. Select Maintenance > Edition Upgrade ;and install features which upgrades your SQL Server to Enterprise edition.
6. Close and Restart
You are done with installing SQL Server Management Studio 2008