If you're familiar with MS-DOS at all, you'll recall that it's a command-driven operating system that performs functions issued at the C:> prompt. The only way to get an MS-DOS computer to do something was to type a command at this prompt and if you can imagine, it was a rather cumbersome way to use a computer. These requirements don't make computers any less easier to operate, but they don't make them that much harder either. So much of today's software is designed to accommodate the experience of a new user that anyone could get connected to the Internet, send an email message, and download an MP3 file within the first five hours of purchasing a personal PC. This way, personal data (such as bank statements, store receipts, health records, etc.) is protected from prying viruses or hackers, while the newer machine is used to surf the net. As you can see, old computers still serve a purpose either for you or for someone else. And although selling an old computer is always an option, there are a number of things that you can do with an old computer. This software will assist you with deleting programs that you not only no longer want, but additional files that these program use as well (dynamic link libraries, database files, registry references, shortcut icons, etc.). But sometimes Windows' Add/Remove Programs isn't enough. Although this software does a pretty good job of removing unwanted programs, it can leave some files behind even after a complete uninstall - files which become orphan files. They will not open on a Windows system without a special utility. .ttf - This extension indicates a font especially designed for use on a Windows system. It stands for "True Type Font." .txt - This extension indicates a plain text file that can be opened with Notepad. .wav - This extension indicates a sound file that like the . Why viruses exist remains a mystery, however we had privy access to the mind behind a virus programmer who explained his motivation behind his destructive inclinations. Apparently, this person had a deep grudge against a popular online service which shall remain unnamed. In this hacker's mind, the online service failed to do a quality job in protecting children from online smut and as retaliation, he created and distributed a virus to as many file libraries of this service as he could.