Changing hotmail accounts

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I've had one hotmail account for years, and it's ridiculously long and irritating, because it has a long string of numbers at the end (long story). I've just changed it to a much simpler and shorter one, set my emails to forward to the new one, but I also use MSN, or as it is called now, Windows Live Messenger. I just can't be bothered copying all my contacts onto the new one as I have over 100 (though, granted, I don't talk to any more than about 50 of them). Is there any way I can just have all of them copied over onto the new account (preferably also on hotmail) for MSN? Any simple, quick way would be appreciated. Thanks Mark