Running Win98 with IE5.5 SP1. I just upgraded to IE5.5 from 5 to try and solve this same problem with no luck. We have an exchange server and use Outlook 2000 as our mail client. When you go to tools: internet options: and programs tab in IE5.5 or 5, there is no option to use outlook as your default email. It just has an option for Outlook Express or hotmail. Is this an explorer or outlook issue and how do you fix it? Been running in circles on this one. Any help or ideas please! We have other machines running the same setup but they don?t have this problem and I cant see anything different probably missing the obvious though. Thanks!