Failure To Install SQL Express SP2 On Vista Home Premium

Hi,

I have been trying to install SQL Express SP2 (SQLEXPR32.exe) on a Window Vista Home Premium for past 2 days . After failing I tried installing SQLEXPR_ADV. (Maybe I have a corrupted download, desperate enough to try anything.). However it keeps showing the following error:

SQL Server Setup Failed to compile the Managed Object Format (MOF) file C:Program FilesMicrosoft SQL Server90Sharedsqlmgmproviderxpsp2up.mof. To proceed, see "Troubleshooting an Installation of SQL Server 2005" or "How to: View SQL Server 2005 Setup Log Files" in SQL Server 2005 Setup Help documentation.

I have search through the forums. One of the possibilities is due to a WMI repository corruption. Tried fixing it, but the problem still persists. (Maybe I am doing it the wrong way , I have downloaded the WMIDiag scripts, not too sure if i ran it correctly).

Below is the installation summary:


Microsoft SQL Server 2005 9.00.3042.00
==============================
OS Version      : Home Edition  (Build 6000)
Time            : Thu Mar 15 02:13:51 2007
 
ATLANTIS : Microsoft Internet Information Services (IIS) is either not installed or is disabled. IIS is required by some SQL Server features.  Without IIS, some SQL Server features will not be available for installation. To install all SQL Server features, install IIS from Add or Remove Programs in Control Panel or enable the IIS service through the Control Panel if it is already installed, and then run SQL Server Setup again. For a list of features that depend on IIS, see Features Supported by Editions of SQL Server in Books Online.
Machine         : ATLANTIS
Product         : Microsoft SQL Server Setup Support Files (English)
Product Version : 9.00.3042.00
Install         : Successful
Log File        : C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGFilesSQLSetup0013_ATLANTIS_SQLSupport_1.log
--------------------------------------------------------------------------------
Machine         : ATLANTIS
Product         : Microsoft SQL Server Native Client
Product Version : 9.00.3042.00
Install         : Successful
Log File        : C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGFilesSQLSetup0013_ATLANTIS_SQLNCLI_1.log
--------------------------------------------------------------------------------
Machine         : ATLANTIS
Product         : Microsoft SQL Server VSS Writer
Product Version : 9.00.3042.00
Install         : Successful
Log File        : C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGFilesSQLSetup0013_ATLANTIS_SqlWriter_1.log
--------------------------------------------------------------------------------
Machine         : ATLANTIS
Product         : SQL Server Database Services
Error           : SQL Server Setup Failed to compile the Managed Object Format (MOF) file C:Program FilesMicrosoft SQL Server90Sharedsqlmgmproviderxpsp2up.mof. To proceed, see "Troubleshooting an Installation of SQL Server 2005" or "How to: View SQL Server 2005 Setup Log Files" in SQL Server 2005 Setup Help documentation.
--------------------------------------------------------------------------------
Machine         : ATLANTIS
Product         : Microsoft SQL Server 2005
Product Version : 9.2.3042.00
Install         : Failed
Log File        : C:Program FilesMicrosoft SQL Server90Setup BootstrapLOGFilesSQLSetup0013_ATLANTIS_SQL.log
Last Action     : InstallFinalize
Error String    : SQL Server Setup Failed to compile the Managed Object Format (MOF) file C:Program FilesMicrosoft SQL Server90Sharedsqlmgmproviderxpsp2up.mof. To proceed, see "Troubleshooting an Installation of SQL Server 2005" or "How to: View SQL Server 2005 Setup Log Files" in SQL Server 2005 Setup Help documentation.
Error Number    : 29513
--------------------------------------------------------------------------------


What are the other possibilities and fixes? Please help.

Thanks a million.