Thanks both of you
I'm running 'Outlook 2003' by the way.
I've tried unchecking the read only box after copying the file to the hard disk.
When trying to import it I get the message that the file "backup.pst" is not a personal folders file.
It is not the end of the world as all my addresses were backed up plus most of my important e-mails.
Just a bit irritating as I thought I'd done the right thing.
Regards
Exeng