Making Outlook 97 default email

I am running MSN as an ISP. When I click to retrieve my email under MSN it brings up Outlook Express as my email. I would like to have Outlook 97 as the default. I have modified under Tools, Internet Options, Programs, and selected Microsoft Outlook, (Outlook Express was previously there) but it does not bring up Outlook 97.

Any thoughts as to how I can fix this

Thanks

Paul