In control panel, I can't change any settings for indexing because 'Indexing
is not Running'. In Services, I select Start for the Windows Search and it
proceeds in starting partway but ends with the message '...Can't find the
file specified'.

WinVista Business; upgrade from winXp Pro
(around 21Mar changed the location of index (off c)

The following are suggestive but I cant interpret further:
(21Mar various logs
Details:
The content index server cannot update or access information because of a
database error. Stop and restart the search service. If the problem
persists, reset and recrawl the content index. In some cases it may be
necessary to delete and recreate the content index. (0x8004117f)
Log Name: Application
Source: Microsoft-Windows-Search
Date: 3/21/2007 1:30:42 PM
Event ID: 3038
Task Category: Gatherer
Level: Error
Keywords: Classic
User: N/A
Computer:
()
Description:
The gatherer is unable to read the registry DocIdMapFile.

Context: Application, SystemIndex Catalog

Details:
The system cannot find the file specified. (0x80070002)
()

Log Name: Application
Source: Microsoft-Windows-Search
Date: 3/21/2007 1:30:44 PM
Event ID: 3028
Task Category: Gatherer
Level: Error
Keywords: Classic
User: N/A
Description:
The gatherer object cannot be initialized.

Context: Windows Application, SystemIndex Catalog

Details:
The registry value cannot be read because the configuration is invalid.
Recreate the content index configuration by removing the content index.
(0x80040d03)