You can set voting buttons programmatically, regardless of the
configuration.
The main difference between IMO and CW mode is the support for different
types of mail accounts. Voting buttons and the lack of support for managing
forms in IMO are more subtle differences. There's no definitive rundown
anywhere that I know of. Outlook developers supporting Outlook 2000 with
their applications need to test in both.

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Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> hello sir,
> may i know what is the difference between internet mode and work
[quoted text clipped - 5 lines]
> thx
> mohan