Control Panel | Add/Remove Programs | Set Program Access and Defaults.

And in IE: Tools | Internet Options | Programs.

Outlook and Outlook Express are entirely different programs. You will get
better help in an MS Outlook newsgroup:

news://msnews.microsoft.com/microsoft.public.outlook
news://msnews.microsoft.com/microsof...utlook.General
news://msnews.microsoft.com/microsof....configuration
news://msnews.microsoft.com/microsof...k.installation
news://msnews.microsoft.com/microsof...tlook.Contacts
news://msnews.microsoft.com/microsof...ok.Calendaring
news://msnews.microsoft.com/microsof...ic.outlook.Fax
news://msnews.microsoft.com/microsof...utlook.interop
news://msnews.microsoft.com/microsof...tlook.printing
news://msnews.microsoft.com/microsof...Program_AddIns
news://msnews.microsoft.com/microsof....program_forms
news://msnews.microsoft.com/microsof...ok.Program_VBA
news://msnews.microsoft.com/microsof...ThirdPartyUtil
--
Bruce Hagen
MS-MVP Outlook Express
~IB-CA~

"aa" wrote in message
...
How do I check if Outlook is my default mail client? And if it is not how
do
I set it default?