I use Outlook 2007, I add new profile and one new outlook1.ost has been
created automaticly. Then I removed the old profile, but old outlook.ost
still kept on my local disk, and there are many other files in the "Local
Settings\Application Data\Microsoft\Outlook" directory. I want to kown which
of them can be delete and how to remove all unuseful files after I remove
corresponding email profile.

Does following files can be deleted?
outlook.ost/ uanrdex.oab/udetails.oab/updndex.oab/urdndex.oab