Victor wrote:

Running Office/Outlook 2003. When I try to add a "new appointment" on
any day or time I get an error: "The form required to view this
message cannot be displayed. Contact your administrator". It's a
standalone home system. I tried to repair my Office installation, no
good. Any ideas? I used to be able to do this.

Try clearing the Forms Cache.
http://www.howto-outlook.com/downloa...formscache.htm
--
Brian Tillman [MVP-Outlook]