you'll get better answers in the outlook programming group - but AFAIK,
you'll need two apps if you want to support outlook 98. If this is for a
corporate network, they really need to get rid of 98 - its insecure and
buggy - then you'll only need to support the 2 newest versions.

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> I am creating a dot net application that has to support outlook 98,
> outlook 2003 and outlook 2007.
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>
> Thanks
Ken Slovak - [MVP - Outlook] - 14 May 2008 22:50 GMT
There are no PIAs and no managed code support at all for Outlook 98. Any
Outlook 98 application would have to be developed on an Outlook 98 machine
if any exist, and could only support C/W mode, and would have to be
unmanaged VB6, C++ or Delphi (or something like that).

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Ken Slovak
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> you'll get better answers in the outlook programming group - but AFAIK,
> you'll need two apps if you want to support outlook 98. If this is for a
[quoted text clipped - 22 lines]
>>
>> Thanks