Mailing List Exchange 2007

How do you get an e-mail red in Outlook?
A friend of mine uses Outlook 2007 connected to an Exchange server.
She has flagged a few emails (Around 25), and the text in the list of e-mails are red in around 70% of the flagged ones.
Why is this happening, and how can I make other urgent e-mails red?
Sorry about the wrong category – I can’t seem to use a computer that displays Yahoo! Answers as HTML – only plain text with a few pictures, buttons and hyperlinks. Anyone know anything on how to fix that?
Thanks in advance!
She will have to ask for a read and replay message.
Don’t forget “you can take the horse to water but you can not force it to drink”.
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