1. Click Start > Run (or simply Win+R) > then type "regedit"(without quotes)
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2. Go to HKEY_CURRENT_USER > Software > yahoo > pager > Test.
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3. Right click on the blank space and click New > DWORD value. Rename it as Plural.
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4. Double click the new value and change the value data to 1. PS: for Vista Users the value data should be 20.
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5. See you can now open another yahoo messenger application. PS: you can open as many as you want!
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,Enjoy Chatting :) Keep Reading»