WinMgmt Repository Initialization returned failure 0x80041002

On WinXP Pro SP3, I am having a devil of a time with a configuration that has
gone awry. It is preventing some client services from starting - Error 1920.

I believe they started when I was asked if I wanted to register with the
Small Business Contact Manager and I elected not to; something may not have
been backed out cleanly.

The wbemcore.log file shows a bunch of errors:
GetUserDefaultLCID failed
CFileCache::Initialize returned 2
Repository Initialization returned failure <0x80041002>!

The event log contains various SideBySide errors:

System Event 59 -

Resolve Partial Assembly failed for Microsoft.VC80.ATL. Reference error
message: Access is denied.

Generate Activation Context failed for c:\Program Files\Microsoft SQL
Server\MSSQL.1\MSSQL\Binn\sqlservr.exe. Reference error message: The
operation completed successfully.

Application Event 28 -
WinMgmt could not initialize the core parts. This could be due to a badly
installed version of WinMgmt, WinMgmt repository upgrade failure,
insufficient disk space or insufficient memory.

Please Help. I've been researching this for almost a week.

Thanks,
Wayne