Outlook 2007 Calendar Deleted

Yesterday 11/14 at the same time as a security update was installed, Outlook 2007 calandar disappeared. I went back to an earlier date with no help. I tried to reinstall Office 2007 with no help. I tried Office repair several times with no help. I did an upgrade from Vista to Windows 7 Home Premium. When I try to open Calendar I get the following message. Cannot display the folder. Microsoft cannot access the specified folder location. The messaging interface has returned an unknown error. If the problem persists, restart Outlook. Outlook cannot open this item. The item may be damaged. I also get the following message: outlook:00000000BCC052DiE06A234A9CA612. Underneith it is attached to a YouTube video link.

upgrades seem to bring nothing but pain in wierd and difficult to solve issues, I strongly suggest your simplest way to a resolve is a clean install

Here is what I have figured out so far. I have never used RSS but it seem to be the problem. I have looked everywhere for "The Inbox Repair Tool." Is there another Repair Tool that you know of?

I searched for (Scanpst.exe on my C drive and on the Office 2007 Professional disks. I am receiving the following alert. !TASK 'RSS Feeds' Reported error (0X8B240600): errors in Outlook.pst file. I lost my Calendar in addition. I have tried everything to find The Inbox Repair Tool.
Thanks for any help.

Finally, if I do a clean install, are you suggesting that I totally delete Office 2007? I did delets Outlook yesterday and reinstalled it with no help. I sure appreciate your help. Art