Is "Windows (Desktop) Search" installed?

bpa_retired wrote:
> Today I tried to use the Windows 'Search' utility and encountered a
> problem.
>
> Upon clicking on 'Search' (from START menu) an ERROR window was displayed
> with the message " A file that is required to run Search Companion cannot
> be
> found. You may need to run setup."
>
> I am not sure what 'You may need to run setup' means.
>
> Yesterday morning the (2) May Windows Updates were installed --with no
> noticeable after effects. Yesterday afternoon the 'Search' utility was
> indeed used with no problems. After turning the PC on this morning the
> utility does not work.
>
> OS is WinXP Pro SP3 with current updates.
>
> Help/suggestions would be appreciated.