It probably already is a .pst file but you need to copy it to your hard drive, remove the read-only attribute (right click-properties) and then OPEN it in Outlook, not import.

--�
Milly Staples [MVP - Outlook]

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After furious head scratching, Johnmac2008 asked:

| I needed to save a copy of my contacts from my old employer. I was
| told to export the contacts and save on a CD. They saved on a large
| file that is on "office data file". Everytime I go to open it, it
| says it is "write protected". How do I get to the data, convert it
| to a .pst and save it on my new computer. The new computer has
| Outlook 2003 with Business Contact Manager. Please help me!