well its the same song but they have different settings and g-dragon appears in the music video street version while minzy is dancing so i guess that is the thing that is different
There are useful webpages:http://me2guide.weblog.com/how-do-you-join-and-use-me2day/http://daichelle.livejournal.com/64560.htmlhttp://www.soompi.com/forums/index.php?showtopic=299959&st=0http://together2ne1.blogspot.com/2009/07/infotut-2ne1s-me2day-accounts-me2day.html