Having trouble installing SQL Server 2005 SP1

I'm Having problem installing SQL server 2005 SP1 on Windows 2003 server R2 SP2.

The log file talk about SQL server express but I have SQL server 2005.

03/19/2007 13:49:07.203 ================================================================================
03/19/2007 13:49:07.203 Hotfix package launched
03/19/2007 13:49:32.984 Attempting to install instance: SQL Server Native Client
03/19/2007 13:49:33.000 Attempting to install target: OMNIWEBPACS
03/19/2007 13:49:33.000 Attempting to install file: sqlncli.msi
03/19/2007 13:49:33.015 Attempting to install file: \\OMNIWEBPACS\d$\bc06cd32e1991973c97744b9c4\HotFixSqlncli\Files\sqlncli.msi
03/19/2007 13:49:33.015 Creating MSI install log file at: C:\WINDOWS\Hotfix\Redist9\Logs\Redist9_Hotfix_KB913090_sqlncli.msi.log
03/19/2007 13:49:33.015 Successfully opened registry key: Software\Policies\Microsoft\Windows\Installer
03/19/2007 13:49:33.015 Failed to read registry key: Debug
03/19/2007 13:49:34.062 MSP returned 0: The action completed successfully.
03/19/2007 13:49:34.062 Successfully opened registry key: Software\Policies\Microsoft\Windows\Installer
03/19/2007 13:49:34.062 Failed to read registry key: Debug
03/19/2007 13:49:34.062 Successfully installed file: \\OMNIWEBPACS\d$\bc06cd32e1991973c97744b9c4\HotFixSqlncli\Files\sqlncli.msi
03/19/2007 13:49:34.062 Successfully installed target: OMNIWEBPACS
03/19/2007 13:49:34.062 Successfully installed instance: SQL Server Native Client
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product Status Summary:
03/19/2007 13:49:34.062 Product: SQL Server Native Client
03/19/2007 13:49:34.062 SQL Server Native Client (RTM ) - Success
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: Setup Support Files
03/19/2007 13:49:34.062 Setup Support Files (RTM ) - Not Applied
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: Database Services
03/19/2007 13:49:34.062 Database Services (SP1 2047 ENU) - NA
03/19/2007 13:49:34.062 Details: Instances of SQL Server Express cannot be updated by using this Service Pack installer. To update instances of SQL Server Express, use the SQL Server Express Service Pack installer.
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: Database Services
03/19/2007 13:49:34.062 Database Services (RTM 1399 ENU) - Not Applied
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: Integration Services
03/19/2007 13:49:34.062 Integration Services (RTM 1399 ENU) - Not Applied
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: Client Components
03/19/2007 13:49:34.062 Client Components (RTM 1399 ENU) - Not Applied
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: MSXML 6.0 Parser
03/19/2007 13:49:34.062 MSXML 6.0 Parser (RTM ) - Not Applied
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: SQLXML4
03/19/2007 13:49:34.062 SQLXML4 (RTM ) - Not Applied
03/19/2007 13:49:34.062
03/19/2007 13:49:34.062 Product: Backward Compatibility
03/19/2007 13:49:34.078 Backward Compatibility (RTM ) - Not Applied
03/19/2007 13:49:34.078
03/19/2007 13:49:34.078 Product: Microsoft SQL Server VSS Writer
03/19/2007 13:49:34.078 Microsoft SQL Server VSS Writer (RTM ) - Not Applied
03/19/2007 13:49:34.078

any Idea?

It means that you take the wrong package to apply. You will need to get the following packages for ENU depending on the processor archiectures.

SQLServer2005SP1-KB913090-x86-ENU.exe

SQLServer2005SP1-KB913090-x64-ENU.exe

SQLServer2005SP1-KB913090-ia64-ENU.exe