ConfigureX in Debian system
Debian supporting two types of Window systems
Debian is in the process of changing from the XFree86 X11 Window system to the X.org X11 Window system; those using Sid/Etch should be able to switch now.
Before starting, backup your X configuration
#cp /etc/X11/XF86Config /etc/X11/XF86Config.old
Install the X.org X server in Debian
#apt-get install xserver-xorg
Debconf will ask which server you wish to run, choose "xserver-xorg".
Either reboot your PC or restart X. You may want to use deborphan to find obsolete packages.
We are going to assume you are running Debian Sarge or later, older versions like Woody do not include support for newer 3D graphics cards. When you first install Debian you will not have any X packages by default, so to install the basic packages do
#apt-get install x-window-system-core xserver-xfree86
This will give you the basics, such as the X server, the basic X shared libraries, the basic X fonts, and the basic X client programs. Note however that this doesn't give you GNOME/KDE/XFCE and others.
You will also be asked to configure your X server after installing it. All of it is pretty much self explanatory, just make sure you know the type of video card you have and the refresh rates for your monitor (can be found in the manual you received with your monitor).
If you want to re-run the configuration program later, simply do
Debian is currently making the transition from Xfree86 to X.org, Sid users should be able to make the switch now.For more information click here