Unread mail folder in favorites

Hi , I am using Outlook 2010 in Windows 7. In Outlook 2010 , there has an area , named "favorites" , we can put some folder into it .

I want to put "unread mail" into "favorites" , but it's not by manual , have any way to set it by using OCT (Office customized tools) or modification in registry ?

I hope that  "unread mail" folder will be showed in "favorites" after office installation automatically.

Thanks so much ~