Exporting the Address Book from Outlook Express to Windows Mail:
 Open your Outlook Express.
 Go to the File menu, select Export and click on Address Book.
 In Address Book Export Tool window, select option Text File (Comma Separated Values) and click on the Export button. You will be asked to select the path where you want to export your Address Book.
 The CSV Export window will open. You will have to select which contact details you want to export. Select all the fields and then press the Finish button.
Exporting Email Messages from Outlook Express:
 Go to Tools and then select Options.
 Go to the Maintenance tab and click on the Store Folder button.
 You will see the location where Outlook Express stores all your email messages. Copy that location, close Outlook Express and then copy all the content to a different location.
Importing the Address Book in Windows Mail:
 In Windows Mail, go to the File menu, select Import and then Windows Contacts.
 In the Import to Windows Contacts window, select the first option CSV (Comma Separated Values) and press the Import button.
 Now browse the file where you have exported your Outlook contct and then press Open. When you are done press Next.
 In next window, select the fileds which you want to import and click on Finish button.
Importing Email Messages to Windows Mail:
 Go to the File menu, select Import and then click on Messages.
 In the Windows Mail Import window, you need to select the option Microsoft Outlook Express 6 and click on Next.
 Browse the folder where you exported all your e-mail messages, click the Select folder button which takes you to the next screen at which point you then press Next.
 Select the message folders you want to import and press Next.
 After the import is finished, the wizard will show a Import Complete message. Press the Finish button.