diff --git a/build_data.sh b/build_data.sh
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+#!/bin/sh
+
+# Copyright (c) 2009 Frank Zago
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+
+# Extract game data from various archives and create a tree with the right files
+
+# Tools needed:
+#   unshield: sudo apt-get install unshield
+#   rename (from perl)
+#   unrar: sudo apt-get install unrar
+
+# Data files needed:
+#   data1.cab and data1.hdr from the original CDROM
+#   the WoG release v3.58f: allinone_358f.zip
+#   the VCMI distribution: vcmi_074.zip
+
+# Usage: put this script and the 4 data files into the same directory
+# and run the script.
+
+
+DESTDIR=`pwd`/vcmi
+rm -rf $DESTDIR
+mkdir $DESTDIR
+
+# Extract Data from original CD-ROM
+# 376917499 2002-06-14 14:32 _setup/data1.cab
+# 27308     2002-06-14 14:32 _setup/data1.hdr
+
+rm -rf temp
+mkdir temp
+cd temp
+
+echo Extracting data1.cab
+unshield x ../data1.cab || exit 1
+echo Done extracting data1.cab
+
+rm -rf CommonFiles
+rm -rf GameUpdate
+rm -rf Support
+rm -rf Program_Files/mplayer
+rm -rf Program_Files/ONLINE
+
+find . -name "*.DLL" | xargs rm -f
+find . -name "*.dll" | xargs rm -f
+find . -name "*.pdf" -print0  | xargs -0 rm -f
+find . -name "*.HLP" | xargs rm -f
+find . -name "*.TXT" | xargs rm -f
+find . -name "*.cnt" | xargs rm -f
+find . -name "*.exe" | xargs rm -f
+find . -name "*.EXE" | xargs rm -f
+find . -name "*.ASI" | xargs rm -f
+
+# Tree is clean. Move extracted files to their final destination
+mv Program_Files/* $DESTDIR
+cd ..
+
+
+# Extract Data from WoG
+# 39753248 allinone_358f.zip
+
+rm -rf temp
+mkdir temp
+cd temp
+
+unzip ../allinone_358f.zip
+cd WoG_Install
+mkdir temp
+cd temp
+unrar x -o+ ../main1.wog
+unrar x -o+ ../main2.wog
+#unrar x -o+ ../main3.wog
+unrar x -o+ ../main4.wog
+#unrar x -o+ ../main5.wog
+#unrar x -o+ ../main6_optional.wog
+#unrar x -o+ ../main7_optional.wog
+#unrar x -o+ ../main8_optional.wog
+#unrar x -o+ ../main9_optional.wog
+
+rm -rf picsall Documentation Data data update 
+rm -f action.txt h3bitmap.txt H3sprite.txt InstMult.txt
+rm -f ACTION.TXT H3BITMAP.TXT H3SPRITE.TXT INSTMULT.TXT
+rm -f *.DLL *.dll *.fnt readme.txt *.exe *.EXE *.lod *.vid h3ab_ahd.snd
+
+rename 'y/a-z/A-Z/' *
+
+# Tree is clean. Move extracted files to their final destination
+
+mv MAPS/* $DESTDIR/Maps
+rmdir MAPS
+mkdir $DESTDIR/Sprites
+mv *.MSK *.DEF $DESTDIR/Sprites
+mv * $DESTDIR/Data/ 
+
+cd ../../..
+
+
+# Extract Data from VCMI release
+# 3516139 2009-10-03 23:03 vcmi_074.zip
+
+rm -rf temp
+mkdir temp
+cd temp
+
+unzip ../vcmi_074.zip
+
+find . -name "*.dll" | xargs rm -f
+find . -name "*.DLL" | xargs rm -f
+find . -name "*.exe" | xargs rm -f
+rm -rf AI
+rm -f AUTHORS ChangeLog license.txt Microsoft.VC90.CRT.manifest 
+rm -rf MP3
+#rm -rf Games    # TODO
+
+mv sprites Sprites
+
+# Tree is clean. Move extracted files to their final destination
+
+cp -a . $DESTDIR
+
+cd ..
+rm -rf temp
+
+
+# Done
+echo
+echo The complete game data is at $DESTDIR
+echo You could move it to /usr/local/share/games/
+echo and configure vcmi with:
+echo   ./configure --datadir=/usr/local/share/games/ --bindir=\`pwd\` --libdir=\`pwd\`
+echo
+echo If you want to run from your VCMI tree, create those links
+echo at the root of your VCMI tree:
+echo   ln -s client/vcmiclient .
+echo   ln -s server/vcmiserver .
+echo   ln -s AI/GeniusAI/.libs/GeniusAI.so .
+
+
+