I would not use Microsoft's methods. Why? Because they tend to just not work.
I would instead consider installing Thunderbird and read articles about getting your mail into Tbird.
Now I'm ready to move my email to other PCs that run Tbird.
I use Windows Live Mail with Windows 7. I want to export my mail to another computer. I've tried exporting to a large USB drive and importing to the 2nd computer several times. Out of about 2000 emails, it only imports about 3 or 4 emails, usually older ones. Maybe it's a POP3 mail problem, but the MS tutorial says I might have to "manually export & import" my mail. OK, but how would that be done?.

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