I'm trying this since a while, it doesnt work that way!
Originally, when I used Vista, I have exported my mails from windows mail before I upgraded to Windows 7. However, now I wanted so switch to Outlook 2007 and I thought it would not be a problem to import my old e-mails in Outlook 2007. I was wrong. All I can properly import are the exported addresses. When I try to import my exported mails in Outlook 2007 by: File -> Import and Export -> Import Internet mail and adresses -> Windows Mail -> Choosing my folder with exported mails -> OK => I get the error message: "The mail folder could not be opened. If another application is using this file, please close it and try again."
I have also imported my windows mail files in windows live mail and and exported them again and tried to import these files with Outlook 2007. It doesnt work. The only why to get the e-mails in Outlook 2007 at all was per drag and drop the files (e-mails) from the export folder into a folder in Outlook 2007, but while doing so, you loose information such as topic and time, so it doesnt help.
Does anyone have an idea what to do?