How do I move my current Windows Live Mail data (several gigabytes of email, many storage folders, and several different email accounts) from my old computer to a new computer running a newer version of Windows Live Mail [WLM])?

This issue has been posted here before but in a different context; however the instructions given by the only two responder is riddled with lack of clarity, confusion as to proper order, apparent omission of critical steps, failure to define erudite terms of art ('take ownership'), and failure to clarify when requested.  Since all of the several people I've asked to review that thread also find the instructions and muddled, incomplete, and ill-defined, as I do re-frame the issue in the hope there are more than two people in this forum who can begin to address the issue.  Hopefully people who have actually done it.

STATEMENT OF THE PROBLEM:

I have an older computer with an obsolete version of Windows Live Mail that Microsoft  abandoned.  I now have a new computer onto which I must install a new version of Windows Mail and move-in the data without bringing down a house of cards.  Please read carefully.

Both computers have different versions of the same OS.  The older one runs Windows 7 Home Premium and the new one runs Windows 7 Professional.  

Do not assume I have the latest version of Windows Live Mail installed on the old machine. The old computer runs Windows Live Mail Version 2011 (Build 15.4.3555.0308) Copyright © 2010 Microsoft Corporation.  Microsoft abandoned development of this program after a later release of Windows Explorer. As a practical matter the program presents too many problems (especially with hyper-linked text) and I must also abandon it for a newer version that will accept migration of my data noted above.  It is highly organized.  

Aside from the actual email and a dozens of  special, topical, issue specific, storage folders there are several email accounts that we do not want to have to recreate. With several email accounts for personal and business use and it's  critical that I preserve and transfer over all those email accounts.

 This is the primary reason we even have Windows Live Mail:  so all mail comes into one place (our computer) and we do not have to go sign on and off to gmail this and gmail that, etc.  All of it comes into one place and we can then sort it to the different storage folders as appropriate.  It is critical that we preserve this organizational integrity.   So, aside from moving mail and storage folders I *especially* do not want to have to recreate the several email accounts with, e.g., POP this and POP that.  I want to preserve my environment as it is and just transfer it over. I do know the various account passwords; but it would be helpful if I could move those too.

First, I must obviously install a new version of Windows Mail.  I have downloaded Windows Essentials to my desk top and am ready to go but I only want to install the mail program and not the entire suite.  

Second, I also want to move in my data files noted above.  I will be transferring those data files from the old to the new computer using my portable Passport drive as if is was a simple flash drive.  The order in which this must be done and the complete steps in the proper order have not been made clear.  Also prior directives using undefined terms-of-techno-art only muddied the waters further.  This is more a hindrance than a help.  As such past instructions cannot be executed.

Like most people at his forum I am an average end-user and not an engineer from MIT so a blizzard of techno-babble will be far more a hindrance than a help; so, simple plain English please,  1, 2, 3, 4.  What do I do and in what order.

It has been said in that  similar thread here (presenting different dynamic — i.e using a Windows back up and not transferring from an actual computer) that the C:Users{user}AppDataLocalMicrosoftWindows Live Mail folder  must be copied
in its entirety to the equivalent location on the new machine but I must assure sure that the 'new user account has ownership of the folder' — whatever that means!   That statement of order seems to assume the new version of windows mail has already been installed or there would be no “equivalent location on the new machine” to copy it to.   If this is important please define terms-of-techno art.  I have no idea what “take ownership of the folder” means.  So please be clear.

The biggest problem thus far has been lack of clear and effective communication.  What  must be done and in what order leaving no steps out.  1, 2,3, in plain English.  If I was a tech expert from M.I.T. I'd not be here even asking.