Copy them to a place on your hard disk where you have read/write access and
verify that the Read Only file attribute for the pst-file isn't checked
after copying. Then open Outlook and use File-> Open-> Outlook Data File...

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Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
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http://www.msoutlook.info/
Real World Questions, Real World Answers
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>A co-worker gave me copies of .pst files that he burned on a CD but I
>can't
> open the files. How do I open them?