When you try to install Microsoft SQL Server 2008, you may receive the following error message:
Cannot install this version of the product. You must first remove any earlier versions of Windows PowerShell(TM) 1.0 before you can install this version. Please click OK to close the Setup Wizard. Next open the Add/Remove Programs Control Panel, uninstall any versions of the Windows PowerShell(TM) 1.0, and run the Windows PowerShell(TM) 1.0 setup again.
Additionally, you may receive the following error message: Unable to get installer types in the C:\Program Files\Microsoft SQL Server\100\Tools\Binn\Microsoft.SqlServer.Management.PSProvider.dll assembly.