I installed Internet Explorer as a trial, but Outlook would not run so I uninstalled it. Now Outlook says I need Outlook Express 4.1 or higher to run. Outlook Express is installed and runs fine. I uninstalled Office, rebooted twice, reinstalled it, and Outlook still gives the same error message. I've looked at the Microsoft site and they only give suggestions for operating systems other than Windows XP. I've also tried repairing Office XP Pro, but it does not work either. I do not see Internet Explorer 6 in my add/remove choices. I've tried to reinstall Internet Explorer 6, but it says a later version is already installed and quits. I'll appreciate any advice.