I recently tried to upgrade a user from Office 2000 to Office 2007 and had a bunch of errors, so I did a system restore to get them back to office 2000 since then the user can not create a new appointment or a new contact. They get the error "The item could not be saved to this folder. The folder has been deleted or moved, or you do not have permission. Do you want to save a copy of it in the default folder for the item? Yes or No"