You got a .rar file and you don't how to open it, some one asked you to send him "a rar file" or you just need a good archiving software? Download and install WinRAR.
The Inca Empire or Inka Empire was the largest empire in South America. It was the last sovereign political entity that emerged from the Andean civilizations before conquest by Spaniards.
If the DVDs, USB sticks, phones, cameras or any other media and devices are automatically starting to play or open explorer windows and your don't want them to, this is how you tweak the AutoPlay settings.