User blog comment:ToshiroFanGirl/♥Tutorial♥Improving Image Quality/@comment-2106167-20120810214626/@comment-2214433-20120810215847

Print Screen button, it should be on your keyboard right next to F12, above the Insert button. When you press that, you just need to open Paint/Gimp/Photoshop and paste the 'screen' there. And MPC stands for Media Player Classic