Okay...if you want to add Xfce to wattOS, it's easy...
1. Adding Xfce4Open your terminal, and enter the following command...
sudo apt-get install xfce4
After executing that command, you will have the basic Xfce desktop environment in addition to the LXDE and Openbox environments. You can now log out of your computer. In the upper-right-hand corner of the log in screen, you'll see the LXDE icon. If you click on it, you can choose which desktop session you want to use. Click on XFCE4 Session, and then log in. You'll now be presented with the Xfce session and you will need to choose to have the default layout or one empty panel. Choose the default layout unless you are familiar with how to set up Xfce.
Also, the Network icon doesn't show on the Xfce session. You should still be connected to the internet despite not having the icon, and you still have access to your network in the menu though.
Rather than giving multiple terminal commands in order to add more to the Xfce desktop, I will just suggest...
a) Open the Synaptic Package Manager
b) Type xfce in the Search box (NOT THE QUICK FILTER BOX!).
c) You can then pick and choose which items you want to add that are specific to the Xfce desktop.
I would highly suggest adding gtk2-engines-murrine. It won't show up in the xfce search, but if you search for it by name...add it too, because it really helps make the desktop look nicer with many themes. I use it on the stock wattOS LXDE too.
Now, at this point you have two desktop environments; therefore, you will have two file managers...Thunar (Xfce) and PCManFM (LXDE). That's part of Biff's brilliance. Though wattOS is an LXDE environment, there aren't really that many things tied to LXDE as there are in other Linux distros that use LXDE. The two file managers are really the only double applications that you'll have.
You can remove PCManFM if you'd like, but you can't remove Thunar (I personally prefer PCMan over Thunar myself).
IF you want to remove PCManFM, enter the following command in your terminal...
sudo apt-get remove --purge pcmanfm*
2. Removing LXDE & OpenboxThis is optional. If you don't mind having three desktop sessions, then just forget about this. Remember, you can choose LXDE, Openbox, or Xfce4 at the log-in screen. However, if you want to remove LXDE and Openbox...do this while you're logged in to your Xfce4 session. Open your terminal, and enter the following commands one at a time...allowing each command to finish before moving to the next one.
sudo apt-get remove --purge lxde*
sudo apt-get remove --purge openbox*
3. Final CleanupIf you've removed LXDE and Openbox, there will still be a few items left on your computer from both. To get rid of those...
a) Open the Synaptic Package Manager
b) Type lxde in the Search box.
c) Look for the few items that are installed, and mark them for Complete Removal and remove them. You might want to leave lxtask (taskmanager) and lxterminal (terminal), unless you want to install xfce4-taskmanager and xfce4-terminal to replace them.
d) Do the same 3 steps with openbox.
Lastly, close synaptic and open your terminal and enter the following command...
sudo apt-get autoremove
Now the next time you log out, you'll only have the Xfce4 session. I hope this helped, and enjoy your wattOS Xfce edition! It's probably the lightest Xfce distro around!