Microsoft offers a hotfix for Outlook 2000 to improve its compatibility with
iCal/vCal 2.0 meeting requests. See
http://support.microsoft.com/?kbid=823199 . Alternatively, have Outlook
2002/2003 senders avoid using reminders in the meeting requests they send to
Outlook 2000 recipients.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> When sending appointments from 2003 to 2000 all you get
> it html, and there is no way to comferm the app. Is there
> a patch for 2000 that corrects this?