How to Make Windows Live Hotmail Accept Mail Only From Known Senders

Jupiter, in Gustav Holst's suite The Planets, is the bringer of jollity; a bit jovial maybe, but everybody's happy at his party, dances and has fun.
Jupiter, the solar system's largest planet, is a bit like known and good senders in that respect: they send messages of joy and gayety. Jupiter also brings order and justice to all things; let's have Windows Live Hotmail be similar in that respect and sort out the less joyful emails from the unknown senders:
›› Do you have enough of seeing all the junk in your Windows Live Hotmail inbox and know all the people who will contact you? Here's how to make Windows Live Hotmail move all messages from other senders straight to the "Junk" folder.