Index: doc/windows.txt
===================================================================
--- doc/windows.txt	(revision 27843)
+++ doc/windows.txt	(revision 27844)
@@ -50,4 +50,23 @@
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 (developers may need this, if you are an user, it is safe to skip.)
 
-TODO
+(TODO: this description needs much more details)
+
+There is an svn repo that hosts all the sources for the dependencies. From
+this, the binary DLLs can be compiled (this step may need some manual
+intervention, autotools is not very nice for cross compilation). The result
+is the "ultimate hidlib dependency pack" (uhdp), 90+ megabytes of dlls
+with gtk, glib, gettext and whatnot.
+
+The uhdp has two versions: the smaller one, with the dlls only, is part
+of the pack downloaded by end users for installation. The bigger one also
+contains the installed headers, .a and .la files and can be used as "sysroot"
+for cross-compiling pcb-rnd (or other software) against.
+
+The normal process is:
+ - download and unpack the binary developer vesion of uhdp (so you don't need
+   to spend long hours compiling all the deps)
+ - install mingw for the cross compilation
+ - configure pcb-rnd for cross compilation with the uhdp path on -I and -L
+
+