How to setup a Linux VNC Server with KDE or Gnome

The default desktop for the VNC Server is "TWM", though most people are used to KDE or Gnome instead. Here is how to change it:

1. Edit ~/.vnc/xstartup
2. For KDE, replace "twm &" with "startkde &"
3. For Gnome, replace "twm &" with "exec gnome-session &"
4. Kill any existing VNC servers with "vncserver -kill :xxx" where xxx is the display number.
5. Start a new server.