LXDE (Lightweight X11 Desktop Environment) was designed to work well in low resource conditions and is a relatively new environment. Unlike most of the other desktops, the components of LXDE do not have many dependencies and can run independently.
If you have a machine using this desktop you can follow along with this section.
This is a screenshot of LXDE running on a Live Media image of Fedora 18:
As you can see, there are two terminals open and the file manager. Starting on the left of the panel is the familiar-looking Fedora icon, which has just been clicked on. It brings up the pulldown as shown. The next icon is the file manager and then an LXTerminal.
The next icon says "Left click to iconify all windows. Middle click to shade them". I chose to leave this icon as is.
The next are two desktop icons, and then the event list. Farther to the right is a Wi-Fi icon (Wi-Fi not activated), a wired Ethernet status, a system monitor, volume control, and the Network Manager Applet...