Import them from your old pst-file.That's where they are.
Even easier maybe (but not sure it works): just copy the old pst-file over the new one. Make a copy of the new one first so you can go back to it,
I used att.net instructions to set up Outlook 2010 on a Windows 7 ultimate OS. All is OK, but it did not transfer my folders or old emails. How can I fix this?