The My Computer command is the trunk lid, the doorway to every single shred of software on your machine. When you choose this command, a window opens to reveal icons that represent each disk drive in your machine, as shown in Figure 2-21. (Note to power users: Technically, My Computer displays a different icon for each hard drive partition. )
For example, by double-clicking your hard-drive icon and then the various folders on it, you can eventually see the icons for every single file and folder on your computer. (The My Computer icon no longer appears on the desktop ”unless you put it there, as described in Section 9.7.3.1.)
NOTE
You don't have to live with "My This, My That" as the names of the important Windows folders. You can easily rename them, as described on this page.
My Computer 