I have just read the following on MSDN (from the link you supplied):
=============================
Indexing Service-Specific Implementation Information
The following information found in the Indexing Service IFilter
documentation is not applicable to writing filters for Windows Search or
Windows Vista:
Windows Search does not supply the same helper functions as Indexing
Service.
Filters for Indexing Service run in the protocol host process (cidaemon.exe)
under the Local System security context, while filters for Windows Search
run in a filter isolation process (SearchFilterHost.exe) under the Local
System security context with restricted rights.
In this filter isolation process, a number of rights are removed:
Restricted Code
Everyone
Local
Interactive
Authenticated Users
Built-in Users
Users' security identifier (SID)
The removal of these rights means the filter does not have access to the
disk system or network or to any user interface or clipboard functions.
Furthermore, the isolation process runs under a job object that prevents
child processes from being created and imposes a 100 MB limit on the working
set. The filter host isolation process increases the stability of the
indexing platform, due to the possibility of incorrectly implemented 3rd
party IFilters.
==================================
I will now try to give the indexing service super-duper rights and also
revert to the previous MODI (from Office 2003), and see if that helps.
Thanks again for putting me on the right track.
"Andrew McLaren" <andrew@fakeaddress.com> wrote in message
news:BEE0A332-3E63-4647-B0CE-D6F0A0C60E13@microsoft.com...
> "Jerry" <undisclosed> wrote ...
>>I need to get the search to use the MODI iFilter to index TIF and MDI
>>files. I am therefore trying to find the Registry settings that regulate
>>indexing behavior in Vista.
>
> Are you using the Microsoft-supplied MODI iFilter? ie, from Office or
> Sharepoint? If so then, as I understand it, this filter does not work at
> all on Vista. End of story. No amount of registry hacking will bring it
> back to life. We need to wait for an updated Vista-compatible MODI
> iFilter from Microsoft. Until then, MDI files are unindexed.
>
> Yes, this was extremely poor planning by Microsoft!! It sucks. Something
> to do with security, apaprently.
>
> The registry locations used by iFilters, are documented in MSDN. They are
> different for WDS 2.x and WDS3.x. Vista uses WDS 3.x. But some legacy
> iFilters can still run on Vista, so they would still refer to the older
> 2.6 loctions:
> For 2.6:
> http://msdn2.microsoft.com/en-us/library/aa965717.aspx
> for 3.x:
> http://msdn2.microsoft.com/en-us/library/bb266533.aspx
>
> There might be third-party TIFF iFilters which work on Vista, I dunno.
> Maybe http://www.ifiltershop.com/xmpfilter.html ??
>
> Hope it helps,
> --
> Andrew McLaren
> amclar (at) optusnet dot com dot au
>