" Click the "View" tab and then uncheck the box next to "Hide file extensions for known file types." Click "OK" and you'll notice that the files in Windows Explorer show a dot and group of three letters after their names. That dot and group of three letters is known as an "extension," and the extension explains what kind of file it is. At some point down the road, usage will dictate a need for more powerful applications. We may need a word processor that can convert a document into an HTML page or PDF document. We may need a calculator that solves geometric problems. Or we may need a multimedia tool that lets us create our own videos as well as watch them. The most vulnerable victims of software piracy are software businesses or independent programmers who create and distribute commercial software or shareware. We described shareware in another article, but because both commercial software and shareware require payment, they're the target of pirates who seek to make these kinds of programs free to use. Today's hackers aren't the pimply-faced teen rebels that you might be thinking of. Instead, this generation of hackers are grown individuals who are more than likely earning a living by stealing the identities of innocent, law abiding individuals and then selling those identities to others who want to slip by the system. But we can still introduce you to some of programming's most basic concepts - starting with the commands we talked about earlier. Commands are the instructions that a computer follows to perform an action. 2 To make them work inside of a program, programmers assign commands to objects like buttons for example. But once the decision to buy a computer is set in stone, what can be done with the old one? There are alternatives to selling a computer and this article is going to introduce a few of them. 1. Give it to the kids. This is of course, assuming the kids are too young to whine about not having enough SDRAM or less than a 160GB hard drive.