You can't as they are received already. You could assign categories for when
you've read an item. This way the people you share the mailbox with will
know who has read it and who has not and makes cleaning up the mailbox a lot
easier. To mimic an unread items folder you can create a custom view which
hides all items with the category of your name.

--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more

http://www.msoutlook.info/
Real World Questions, Real World Answers

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"Luqman" wrote in message
...
I am using Outlook 2007, which receives E-mails from Microsoft Exchange
Server 2003.

We are sharing a common E-Mail Box.

If before I check my E-Mail, someone else has checked the E-Mails of today
and replied, and after that, I logon and check same E-Mails, all E-Mails
received by me are received as marked "READ".

How can I create a rule so that any E-Mail I receive should be marked as
"UNREAD".

Best Regards,

Luqman