Instructions:
1) Download Multi MSN 6.2 Zip file,
2) Extract the Multi MSN 6.2 file to the folder of MSN (C:\Program Files\MSN Messenger)
3) Exit your MSN Messenger
4) Run the Extracted file from (C:\Program Files\MSN Messenger)
5) Click on "Yes"
6) Click on "Apply patch"
7) Now your MSN is Multiple
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From the site
http://www.batkhela.com/msn/