What are computer viruses detailed information?

well you see, the term "virus" is overused, there are tojan horses, spam bots, and other things like worms, which spread automatically, what a virus is is essentially something unwanted on your computer, their not good, to be infected by a Trojan, all you have too do is run a certain file, your infected, *detailed information*: the Trojan horse writes registry enteries into the registry using a soft of coding language, once those codes are written, its kind of like Windows now accepts it as safe, and the Trojan will boot up every time you turn on the computer with no hassle, some trojans can do scary things, some can look through your webcam, listen into your microphone, turn up and down your volume, steal sensitive information, and destroy your computer beyond repair, the "Trojan virus is varied in different context, but in essence, it allows somebody else to connect to your computer and wreak havoc. thank you for your interest, i would give you contact information, but im a hacker and don't want to get caught, if you ever hear of a hacker codenamed W3zkid, That's me, pce.