By default Microsoft Outlook 2007 doesn’t provide must options in exporting data from outlook. There could be any reasons when you need to export data from Outlook to use to import it for some other purpose.
Here is Outlook Data Export add-in for Microsoft Outlook 2007 which lets you to export mails, contacts, appointments, tasks and notes to serveral file formats (MSG, unicode MSG, RTF, TXT, CSV, ICS, vCard, HTML, XML). You can export a complete folder with subfolders or only selected items.
Outlook Data Export Add-in