How can I use XFCE to instead GNOME

[Mike Zang]

> Create or edit $HOME./.vnc/xstartup so that it contains:
> --B<----B<----B<----B<----B<----B<----B<----B<----B<----B<--
> #!/bin/sh
> unset SESSION_MANAGER
> startxfce4
> --B<----B<----B<----B<----B<----B<----B<----B<----B<----B<--
I have this file, now I am using 
exec gnome-session

if I modify to
startxfce4

I can't get anything, there is no any terminal or GUI in my vnc client
window.