I have a Windows XP computer with my email in Microsoft Outlook Express.  I have been trying to import the mail to Microsoft Outlook for Mac 2011.  I finally managed to migrate a copy of the email into Microsoft Outlook 2000 and Microsoft Live Mail so I have three copies of the same mailbox on one computer in three different programs.

I managed to export the mail into a .pst file only to get the message from the Outlook for Mac: "Outlook for Mac can only import Unicode-based .pst files which are the standard format for Personal Folders files for Outlook (for Windows) 2003 and later versions. ANSI-formatted .pst files, also known as Outlook 97-2002 Personal Folders Files, were the standard personal folder format for saving data in Outlook for Windows in versions 97-2002."

All third party software that I have seen that might be able to accomplish this task seems to require some version of Outlook more recent than 2002.  Of course if I had Outlook 2003 or later then I wouldn't need the third party software anyway.  I can't even find any version of Outlook on Microsoft's website except Outlook.com.

Is there ANY way for me to transfer the mail files from the old computer to the new one?