What does GNOME & KDE mean?
These are the 2 most popular Window Managers for X-Windows. X-Windows is the tool used to create the GUI (Graphical User Interface) in most Linux distributions. The Window Manager is the enivronment that manages each window (which conceptually is its own program/process in the system, contained in a window). To make managing each program easier for the user, the windows are managed, and can be minimized to an icon, or maximized to full screen, etc. In practice, most common GUIs have more similarites than differences – this includes MS Windows, Mac OS X, GNOME, and KDE. GNOME puts its menu at the top, KDE at the bottom. KDE is more configurable than GNOME, as each has different approaches / thoughts / philosophies on the user interface. Some distros offer both as different releases (e.g. Ubuntu (GNOME) vs. Kubuntu (KDE)), or others can be configured with either (e.g. Debian). For details on GNOME, see GNOME.org, and for details on KDE, see KDE.org. For other X-Window managers, see Wikip