>>Here is the excerpt from the log file
>>
>>Machine : SHANNONO
>>Product : MSXML 6 Service Pack 2 (KB954459)
>>Product Version : 6.20.1099.0
>>Install : Failed
>>Log File : C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0021_SHANNONO_MSXML6_1.log
>>Error Number : 1603
>>
>>
>>>Is it a rights issue, what was the error.
>>>
>>>>I have about a dozen customers that say they can not install MS SQL 2005 Express on their XP computers. The install fails.
>>>>A couple of them I have been able to help by asking them to run Windows update and that took care of it, but I have quite a few that are up to date on Windows updates and still can't install MS SQL Express 2005.
>>>>
>>>>Any words of wisdom on this?
>>>>
>>>>Thanks,
>>>>Einar
>
>You could try (if these are customer machines, test on only one after backing the system up first!):
>
>1. Run the Windows Installer cleanup tool:
>http://support.microsoft.com/kb/290301
>
>2. Then uninstall MSXML6 Service Pack 2 (probably some files are flagged as read-only or the install is not clean).
>
>3. Install SQLServer Express 2005
>
>4. Reinstall MSXML 6 Service Pack 2
>
>Read the log you posted FIRST:
>
>C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0021_SHANNONO_MSXML6_1.log

The installer cleanup tool did the trick. Thanks

Einar