[PATCH] document win32-loader

[Robert Millan <rmh@aybabtu.com>]

This patch adds a short explanation on what win32-loader does from end user
point of view.

Ok to commit?

-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call… if you are unable to speak?
(as seen on /.)

Index: en/boot-installer/x86.xml
===================================================================
--- en/boot-installer/x86.xml	(revision 51556)
+++ en/boot-installer/x86.xml	(working copy)
@@ -192,6 +192,27 @@
 </para>
   </sect2>
 
+  <sect2 arch="x86" id="boot-win32">
+  <title>Booting from Windows</title>
+
+<para>
+To start the installer from Windows, you must first obtain CD-ROM/DVD-ROM or USB
+Memory Stick installation media as described in <xref linkend="official-cdrom"/>
+and <xref linkend="boot-usb-files"/>.
+</para>
+
+<para>
+If the medium is a CD-ROM or DVD-ROM, when you insert it a pre-installation program
+should be launched automatically.  In case Windows doesn't start it, or you are using
+a USB Memory Stick medium, you can run it manually by accessing the device and
+executing <command>setup.exe</command>.
+
+When the program is started, it will ask a few preliminar questions and prepare the
+system to start the installer.
+</para>
+
+  </sect2>
+
   <sect2 arch="x86" condition="bootable-usb" id="usb-boot">
   <title>Booting from USB Memory Stick</title>
 <para>