How to convert Kmail Mails to M$ Outlook

Hi Guys, We have a desktop using kmail 1.0.20. He wants to transfer mails (kmail) to M$ Outlook. What would be the best way to do that? Thanks, -- Jonathan J. Terbio = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =