All Microsoft updates to my Outlook 2003 fail. I have followed the error messages back to the Outlook Source Engine, which apparently is corrupt or has been deleted somehow. When I try to do a "repair" install of Outlook, it says I need to insert the original disk, which I no longer have. After all, I installed it nearly 10 years ago.

How do I do a repair install and/or fix the OSE without the original disk? I have my product code, which I wrote down at the time, but no disk.