converting .rar to play on computer

Entree
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Joined: 22 Aug 2006
Posts: 1
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I just downloaded a movie from MIRC and i believe it was a .tar file...someone told me to extract it in winrar so it might play on my computer so i did...nothing happened there’s just a winrar achive sitting in the folder now...if anyone knows how i can convert this file into a movie file to be played on my computer or anything different that i need to do just let me kno...thanks