While it's true that you need to be able to use your computer's operating system, the operating system isn't the reason you have a computer. The operating system is the platform, but the objective is to run programs.
Windows 2000 Pro lets you start programs in many different ways. You'll probably use one or two of these methods all the time, and rarely use others:
Double-click the program's icon or shortcut, wherever it may be: in the Windows Explorer window, on the desktop, in a folder, and so on. Or right-click such an icon and choose Open from the shortcut menu.
Highlight a program (or program shortcut) icon and then press Enter.
Choose the program's name from the Start→Programs menu.
Choose Start→Run, then type the program file's name (Section 220.127.116.11), and press Enter.
Double-click a document associated with the program.
What happens next depends on the program you're using. Most present you with a new, blank, untitled document. Some, such as FileMaker and PowerPoint, greet you with a question: ...