Move Apple Mail v 2.1 from Mac OX 10.4.10 to Windows 7 Outlook

I have a ton of Apple mail in version 2.1 on my old G4 tower mac running OX 10.4.10. I don't see an option to Archive mailboxes. I want to be able to view the old mail messages on my Windows 7 based PC. Any ideas other than saving each indivicual message?