Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
XDE is desktop environtment like KDE and Gnome. But it's lighter than KDE and Gnome. But it's still need middle spec computer like pentium 3/4 and with Minimum Ram 128-256 MB Ram. LXDE is simple, but for newbie user like me it's still little hard. LXDE support compiz fusion for eyecandy your desktop. My First LXDE Linux distribution was PCLinuxOS 2009.1 KDE. I install PCLinuxOS 2009.1 then install task-lxde, then remove kde 3.5.10.
Default desktop of LXDE, look same with KDE 3.5.10. To configure the panel just click on panel then panel settings, you can add some icon menu to panel, position, add more panel.
For widget, you can use cairo clock, or screenlets. This is my default window decorator using emerald themes.