The same pst should work fine with those versions.
--
Diane Poremsky [MVP - Outlook]
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"GF" <(E-Mail Removed)> wrote in message
news:6D99B22D-BF3C-4E35-A25A-(E-Mail Removed)...
> Just bought a new computer with office 2007. I'm using a computer now
> with
> office 2003. I keep my data, including my PST file, on an external hard
> drive that I carry between the two computers (work and home). Any problem
> with using the same PST file (created in Outlook 2003) on both computers?