K lol, i did this to my cousin, who recently started playing conquer, it will scare your victim, make them laugh, or confuse them. All you have to do is get on to their computer and into there INI folder, edit there sounds to your pleasure, such as, make the meteor dropping sound into, your voice on a sound recorder saying : HOLY **** A MET!, or making the sound of birdmen dieing a loud screaming sound (like the pop up excorcist videos xD) Also if you would like to get your victim in embarrasing "lmao" trouble, make the sounds into *** sounds, calls the attention of their nearby shocked parents very quickly xD, also you should already have the sounds edited on a memory card or something for fast use, and just download to their computer while their momentarily away from the computer, just remember to use your imagination when doing this,
HAPPY PRANKING, and remember,
no one thanks a flame for a reason, so dont even go there -.-
also i know this isnt a scam, so if ur gonna say that, point me in the direction of a pranking forum -.- (Sarcasm)