You can't just copy a folder from one program to another. You should "export" messages from within the original program, creating a separate folder on you hard drive containing a folder with all your messages. Then, from within the new program use its "import" messages function to import the folders you want within the new program. You will be asked to specify the format of the mail you are importing (Outlook Express, Windows Mail, or Windows Live Mail). The messages will then show up within WLM as subfolders under the storage folders group. At that point you can move the messages into new folders under Storage or under any of the mail accounts if you like.