At launch states need to install Outlook Express

[LiveTwoHike]

At launch, Outlook always displays a msg stating that Outlook Express
needs to installed. It works w/o it, so it is an annoyance rather than
a show-stopper. I am reluctant to install Express for fear that what
I currently have will stop working all together.

Thanks

 

[DL]

Outlook Express is not compatible or useable on Vista

 

[LiveTwoHike]

Outlook Express is not compatible or useable on Vista

So how do I get rid of the error message?
Other people that are using Outlook 2000 on Vista don't report this
particular problem.