How are the computer viruses created and how do they work?And how to send viruses to others?

2572>Virues normally employ simple programming I.E. opening 100 internet browsers and crashing your computer. However, some virues like worms, use holes in your computer's operating system or applications to work trouble. A virus is created when a really annoying person decides to write the program and sends it to a bunch of random people...often via spam. Sending viruses to other people is a criminal offense and is illegal. DON'T DO IT!
Reply:Planning on making a few?