I am trying to export my Windows Mail messages and contacts on one computer to Microsoft Office Outlook 2007 on a different computer. The computer with Windows Mail is a Vista Home Premium 32bit and I want to move it to the one with Outlook 2007 which is a Vista Home Premium 64bit. I have the file exported into a .pst file but I keep getting an error code: 0x80070021 when I attempt to copy the .pst folder to an external drive in order to move the folder to the other computer. HELP~