I fully installed Office 2000 Pro. But I when I start Outlook I get this message: "The operation failed due to an installation problem. Restart Outlook and try again. If the problem persists, please reinstall." Other programs won't even start, they just do nothing at all. I deleted and installed Office again. The 2nd time I recovered Office and the 3rd time I reinstalled it. But it still doesn't work. What can be a solution.